Merge branch 'master' of github.com:libigl/libigl

Former-commit-id: 36418ed8b85ae685a4fb80aad6ca062b686a7afb

README.md

@@ -154,7 +154,7 @@ git pull
 git submodule update -- recursive
 ```
 
-## Unit testing 
+## Unit testing
 
 Libigl maintains [separate
 repository](https://github.com/libigl/libigl-unit-tests) for unit testing.
@@ -229,6 +229,6 @@ page](https://github.com/libigl/libigl/issues).
 ## Copyright
 2015 Alec Jacobson, Daniele Panozzo, Christian Schüller, Olga Diamanti, Qingnan
 Zhou, Nico Pietroni, Stefan Brugger, Kenshi Takayama, Wenzel Jakob, Nikolas De
-Giorgis, Luigi Rocca, Leonardo Sacht, Olga Sorkine-Hornung, and others.
+Giorgis, Luigi Rocca, Leonardo Sacht, Kevin Walliman, Olga Sorkine-Hornung, and others.
 
 Please see individual files for appropriate copyright notices.

examples/Makefile

@@ -1,20 +0,0 @@
-.PHONY: all
-.NOTPARALLEL: all
-
-DIRS=$(wildcard */)
-
-
-all: $(DIRS) 
-	for p in  $(DIRS); \
-	do \
-	echo "cd $$p" ; \
-	$(MAKE) -C $$p; \
-	done
-	
-clean: $(DIRS) 
-	for p in  $(DIRS); \
-	do \
-	echo "cd $$p" ; \
-	$(MAKE) -C $$p clean; \
-	done
-	#$(MAKE) -C $$p || exit $$?; \#$(MAKE) -C $$p || exit $$?; \

examples/Makefile.conf

@@ -1,252 +0,0 @@
-#############################################################################
-# FLAGS
-#############################################################################
-UNAME := $(shell uname)
-
-THIS_DIR := $(shell dirname $(realpath $(lastword $(MAKEFILE_LIST))))
-
-GG=g++
-#GG=clang++
-#GG=/usr/bin/g++     17s
-#GG=/usr/bin/clang++ 14s
-#GG=g++-mp-4.3       15.5s
-#GG=g++-mp-4.7       19.9s
-
-CFLAGS += -Wall
-CFLAGS += -std=c++11
-
-ifeq ($(UNAME), Linux)
-	DEFAULT_PREFIX=/usr/local/
-else
-	DEFAULT_PREFIX=/usr/local/
-	# I guess arch only works in Mac OSX
-	AFLAGS+=-arch x86_64 -m64 -march=corei7-avx
-endif
-
-# Default parameters for the IGL group members based on there computer's
-# username
-ifndef IGL_USERNAME
-	IGL_USERNAME := $(shell whoami)
-endif
-
-ifeq ($(IGL_USERNAME),whitinge)
-	DEFAULT_PREFIX=/usr/local/
-	MOSEKPLATFORM=osx64x86
-	MOSEKVERSION=7
-	IGL_WITH_TETGEN=1
-	IGL_WITH_MOSEK=1
-	IGL_WITH_BBW=1
-	IGL_WITH_SVD3X3=1
-	IGL_WITH_PNG=1
-	# I don't use llvm
-#AFLAGS = -m64 -march="corei7-avx"
-	# msse4.2 is necessary for me to get embree to compile correctly
-	AFLAGS=-m64 -msse4.2
-	OPENMP=-fopenmp
-	EIGEN3_INC=-I$(DEFAULT_PREFIX)/include/eigen3 -I$(DEFAULT_PREFIX)/include/eigen3/unsupported
-endif
-
-ifeq ($(IGL_USERNAME),ajx)
-        LIBIGL_USE_STATIC_LIBRARY=1
-	MOSEKPLATFORM=osx64x86
-	MOSEKVERSION=7
-	IGL_WITH_VIEWER=1
-	IGL_WITH_TETGEN=1
-	IGL_WITH_BOOLEAN=1
-	IGL_WITH_EMBREE=1
-	IGL_WITH_MATLAB=1
-	IGL_WITH_MOSEK=1
-	IGL_WITH_CGAL=1
-	IGL_WITH_BBW=1
-	IGL_WITH_SVD3X3=1
-	IGL_WITH_PNG=1
-	IGL_WITH_XML=1
-	IGL_WITH_BOOST=1
-	# I don't use llvm
-#AFLAGS = -m64 -march="corei7-avx"
-	# msse4.2 is necessary for me to get embree to compile correctly
-	AFLAGS=-m64 -msse4.2
-	#OPENMP=-fopenmp
-	EIGEN3_INC=-I$(DEFAULT_PREFIX)/include/eigen3 -I$(DEFAULT_PREFIX)/include/eigen3/unsupported
-	#EIGEN3_INC=-I/Users/ajx/Documents/eigen -I/Users/ajx/Documents/eigen/unsupported
-endif
-
-ifeq ($(IGL_USERNAME),alecjaco)
-	DEFAULT_PREFIX=/home1/alecjaco/
-	#MOSEKPLATFORM=linux64x86
-	IGL_WITH_TETGEN=1
-	IGL_WITH_MATLAB=0
-	#IGL_WITH_MOSEK=1
-	OPENGL_INC=-I$(DEFAULT_PREFIX)/include
-	OPENGL_LIB=-lGL -lGLU
-	# Glut is needed only for examples
-	GLUT_LIB=-lglut
-	ANTTWEAKBAR_LIB=-lAntTweakBar
-	OPENMP=-fopenmp
-endif
-
-ifeq ($(IGL_USERNAME),jacobson)
-	CFLAGS+=
-endif
-
-ifeq ($(IGL_USERNAME),sorkineo)
-	MOSEKPLATFORM=osx64x86
-	IGL_WITH_TETGEN=1
-	IGL_WITH_MATLAB=0
-	IGL_WITH_MOSEK=1
-	IGL_WITH_PNG=0
-endif
-
-ifeq ($(IGL_USERNAME),jalec_linux)
-	MOSEKPLATFORM=linux64x86
-	IGL_WITH_TETGEN=1
-	IGL_WITH_MATLAB=0
-	IGL_WITH_MOSEK=1
-	OPENGL_LIB=-lGL -lGLU
-	# Glut is needed only for examples
-	GLUT_LIB=-lglut
-	ANTTWEAKBAR_LIB=-lAntTweakBar
-	IGL_WITH_PNG=1
-	OPENMP=-fopenmp
-endif
-
-ifeq ($(IGL_USERNAME),daniele)
-	IGL_WITH_MATLAB=0
-	IGL_WITH_XML=1
-	AFLAGS=-m64
-	GG=g++-4.8 -Wfatal-errors
-	EIGEN3_INC=-I/usr/local/include/eigen3
-endif
-
-ifeq ($(IGL_USERNAME),olkido)
-    IGL_WITH_MATLAB=1
-	IGL_WITH_COMISO=1
-	IGL_WITH_XML=1
-	COMISO=/Users/olkido/Documents/igl/MIQ/src/CoMISo
-	  IGL_WITH_XML=1
-    AFLAGS= -m64
-    IGL_WITH_EMBREE=1
-    IGL_WITH_PNG=1
-	IGL_WITH_VIEWER=1
-	MATLAB=/Applications/MATLAB_R2014b.app/
-endif
-
-ifeq ($(IGL_USERNAME),chrsch)
-  ifeq ($(UNAME), Linux)
-    DEFAULT_PREFIX=/usr
-    IGL_WITH_XML=1
-    IGL_WITH_TETGEN=0
-    IGL_WITH_MATLAB=0
-    IGL_WITH_PNG=0
-    IGL_WITH_MOSEK=0
-    #MOSEKPLATFORM=linux64x86
-    OPENGL_LIB=-lGL -lGLU
-    # Glut is needed only for examples
-    GLUT_LIB=-lglut
-    ANTTWEAKBAR_LIB=-lAntTweakBar
-    OPENMP=-fopenmp
-    AFLAGS = -Wfatal-errors
-  else
-    IGL_WITH_XML=1
-    IGL_WITH_TETGEN=0
-    IGL_WITH_MATLAB=0
-    IGL_WITH_PNG=0
-    IGL_WITH_MOSEK=0
-    OPENGL_INC=-I$(DEFAULT_PREFIX)/include
-    OPENGL_LIB=-lGL -lGLU
-    # Glut is needed only for examples
-    GLUT_LIB=-lglut
-    ANTTWEAKBAR_LIB=-lAntTweakBar
-    OPENMP=-fopenmp
-    AFLAGS=-m64
-  endif
-endif
-
-ifeq ($(IGL_USERNAME),stefanmessmer)
-	GG=clang++
-	IGL_WITH_TETGEN=0
-	IGL_WITH_EMBREE=0
-	IGL_WITH_MATLAB=0
-	IGL_WITH_MOSEK=0
-	IGL_WITH_BBW=1
-	IGL_WITH_PNG=0
-	IGL_WITH_XML=0
-	IGL_WITH_BOOST=0
-	IGL_WITH_SVD3X3=1
-	#OPENGL_INC=-I$(DEFAULT_PREFIX)/include
-	#OPENGL_LIB=-lGL -lGLU
-	# Glut is needed only for examples
-	#GLUT_LIB=-lglut
-	#ANTTWEAKBAR_LIB=-lAntTweakBar
-	OPENPMP = -openmp
-	AFLAGS = -DIGL_NO_MOSEK -DIGL_NO_ANTTWEAKBAR -DIGL_NO_OPENGL -arch armv7s -arch armv7 -arch arm64 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk
-	AFLAGS_SIMULATOR = -DIGL_NO_MOSEK -DIGL_NO_ANTTWEAKBAR -DIGL_NO_OPENG -arch i386 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator7.0.sdk
-endif
-
-ifeq ($(IGL_USERNAME),wenzel)
-	IGL_WITH_TETGEN=0
-	IGL_WITH_MATLAB=0
-	IGL_WITH_MOSEK=0
-	OPENGL_LIB=-lGL -lGLU
-	GLUT_LIB=-lglut
-	ANTTWEAKBAR_LIB=-lAntTweakBar
-	IGL_WITH_PNG=1
-	OPENMP=-fopenmp
-	CFLAGS += -msse4 -D__SSE4__ -DIGL_NO_MOSEK
-endif
-
-#############################################################################
-# DEFAULTS (USUALLY TO SOMETHING THAT WORKS FOR SURE ON MAC OS X
-#############################################################################
-
-ifndef OPENGL_LIB
-	OPENGL_LIB=-framework OpenGL
-endif
-ifndef GLUT_LIB
-	GLUT_LIB=-framework GLUT
-endif
-# Eigen dependency
-ifndef EIGEN3_INC
-	EIGEN3_INC=-I$(DEFAULT_PREFIX)/include/eigen3 -I$(DEFAULT_PREFIX)/include/eigen3/unsupported
-endif
-
-LIBIGL=$(THIS_DIR)/../
-LIBIGL_INC=-I$(LIBIGL)/include
-
-ifndef ANTTWEAKBAR_INC
-	ANTTWEAKBAR_INC=-I$(LIBIGL)/external/AntTweakBar/include
-endif
-ifndef ANTTWEAKBAR_LIB
-	# AntTweakBar needs AppKit on mac os x
-	ANTTWEAKBAR_LIB=-L$(LIBIGL)/external/AntTweakBar/lib -lAntTweakBar -framework AppKit -liglanttweakbar
-endif
-
-ifndef SINGULAR_VALUE_DECOMPOSITION_INC
-	SINGULAR_VALUE_DECOMPOSITION_INC=\
-	-I$(LIBIGL)/external/Singular_Value_Decomposition/
-endif
-
-ifndef TETGEN
-# By default I'm using the libigl version. Adjust accordingly
-	TETGEN=$(LIBIGL)/external/tetgen
-	TETGEN_LIB=-L$(TETGEN) -ligltetgen -ltet 
-	TETGEN_INC=-I$(TETGEN)
-endif
-
-ifndef EMBREE
-	EMBREE=$(LIBIGL)/external/embree
-	EMBREE_INC=-I$(EMBREE)/ -I$(EMBREE)/include
-	EMBREE_LIB=-L$(EMBREE)/build -lembree -lsys
-endif
-ifndef YIMG
-	YIMG=$(LIBIGL)/external/yimg
-	YIMG_LIB=-L$(YIMG) -lyimg -lz -L/usr/X11/lib -L$(DEFAULT_PREFIX)/lib -lpng -bind_at_load
-	YIMG_INC=-I/usr/X11/include -I$(YIMG) 
-endif
-
-ifdef LIBIGL_USE_STATIC_LIBRARY
-	CFLAGS += -DIGL_STATIC_LIBRARY
-	LIBIGL_LIB=-L$(LIBIGL)/lib -ligl -liglopengl2 -liglopengl
-endif
-
-OPTFLAGS+=-O3 -DNDEBUG $(OPENMP)

examples/MatlabWorkspace/Makefile

@@ -1,29 +0,0 @@
-.PHONY: all
-
-# Shared flags etc.
-include ../Makefile.conf
-LIBIGL_LIB+=-liglmatlab
-
-MATLAB_INC=-I$(MATLAB)/extern/include/
-MATLAB_LIB=-L$(MATLAB)/bin/maci64 -lmx -lmat
-
-LIB+=$(LIBIGL_LIB) $(MATLAB_LIB)
-INC+=$(LIBIGL_INC) $(EIGEN3_INC) $(MATLAB_INC)
-
-CFLAGS += -g
-
-ifeq ($(IGL_WITH_MATLAB),1)
-	EXAMPLE=example
-endif
-
-all: $(EXAMPLE)
-
-example: example.o
-	g++ -o example example.o $(LIB)
-
-example.o: example.cpp
-	g++ $(CFLAGS) -o $@ -c $< $(INC)
-
-clean:
-	rm -f example.o
-	rm -f example

examples/MatlabWorkspace/README

@@ -1,13 +0,0 @@
-This is a simple example program that shows how to use the MatlabWorkspace
-class of the igl library
-
-
-To Build:
-  make
-
-To Run:
-  ./example [input.dmat] [output.mat]
-
-Example Run #1:
-  Issuing:
-    ./example example.dmat output.mat

examples/MatlabWorkspace/example.cpp

@@ -1,32 +0,0 @@
-#include <Eigen/Core>
-
-#include <igl/readDMAT.h>
-#include <cstdio>
-
-#ifdef IGL_STATIC_LIBRARY
-#  define IGL_HEADER_ONLY
-#  define IGL_HEADER_ONLY_WAS_NOT_DEFINED
-#endif
-#include <igl/matlab/MatlabWorkspace.h>
-#include <igl/on_boundary.h>
-#ifndef IGL_STATIC_LIBRARY_WAS_NOT_DEFINED
-#  undef IGL_HEADER_ONLY
-#endif
-
-int main(int argc, char * argv[])
-{
-  using namespace igl;
-  using namespace Eigen;
-  if(argc <= 2)
-  {
-    printf("USAGE:\n  ./example [input.dmat] [output.mat]\n");
-    return 1;
-  }
-  MatrixXd M;
-  readDMAT(argv[1],M);
-  igl::matlab::MatlabWorkspace mat;
-  mat.save(M,"M");
-  mat.write(argv[2]);
-
-  return 0;
-}

examples/MatlabWorkspace/example.dmat

@@ -1,7 +0,0 @@
-3 2
-1
-4
-2
-5
-3
-6

examples/ReAntTweakBar/Makefile

@@ -1,21 +0,0 @@
-.PHONY: all
-
-# Shared flags etc.
-include ../Makefile.conf
-
-all: example
-
-.PHONY: example
-
-inc=$(LIBIGL_INC) $(ANTTWEAKBAR_INC)
-lib=$(LIBIGL_LIB) $(OPENGL_LIB) $(GLUT_LIB) $(ANTTWEAKBAR_LIB)
-CFLAGS+=-g
-
-example: example.o
-	g++ $(CFLAGS) -o example example.o $(lib)
-
-example.o: example.cpp
-	g++ $(CFLAGS) -c example.cpp -o example.o $(inc)
-clean:
-	rm -f example.o
-	rm -f example

examples/ReAntTweakBar/README

@@ -1,29 +0,0 @@
-ReAntTweakBar is a minimal wrapper for the AntTweakBar library that allows
-"bars" to be saved and load from disk. Changing your existing app that users
-AntTweakBar to use ReAntTweakBar is trivial.
-
-This directory should contain:
-  README
-  example.cpp
-  example  (option example binary)
-  temp.rbr (optional example ReAntTweakBar output)
-
-Many (but not all) variable types are supported. I'll try to keep track them
-here:
-  TW_TYPE_BOOLCPP
-  TW_TYPE_QUAT4F
-  TW_TYPE_COLOR4F
-  TW_TYPE_COLOR3F
-  TW_TYPE_DIR3F
-  TW_TYPE_BOOL32
-  TW_TYPE_INT32
-  TW_TYPE_FLOAT
-  TW_TYPE_DOUBLE
-  and
-  custom TwTypes made with TwDefineEnum
-
-I'm working on adding the rest on an as-needed basis. Adding a new type only
-requires changes in a few places...
-
-Look in example.cpp for an example of how to compile with ReAntTweakBar and use
-it.

examples/ReAntTweakBar/example.cpp

@@ -1,381 +0,0 @@
-/*
-  This is an example program that came with AntTweakBar modified to use ReAntTweakBar
-
-  On mac os x compile with:
-
-  g++ -c example.cpp -o example.o
-  g++ -o example example.o -framework OpenGL -framework GLUT -lAntTweakBar
-  rm *.o
-
-*/
-
-#ifdef __APPLE__
-#define _MACOSX
-#endif
-// ORIGINAL COPYRIGHT INFO
-//  ---------------------------------------------------------------------------
-//
-//  @file       TwSimpleGLUT.c
-//  @brief      A simple example that uses AntTweakBar with OpenGL and GLUT.
-//
-//              AntTweakBar: http://www.antisphere.com/Wiki/tools:anttweakbar
-//              OpenGL:      http://www.opengl.org
-//              GLUT:        http://opengl.org/resources/libraries/glut
-//
-//  @author     Philippe Decaudin - http://www.antisphere.com
-//  @date       2006/05/20
-//
-//  Compilation:
-//  http://www.antisphere.com/Wiki/tools:anttweakbar:examples#twsimpleglut
-//
-//  ---------------------------------------------------------------------------
-
-
-#include <igl/anttweakbar/ReAntTweakBar.h>
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <math.h>
-
-#if defined(_WIN32) || defined(_WIN64)
-//  MiniGLUT.h is provided to avoid the need of having GLUT installed to
-//  recompile this example. Do not use it in your own programs, better
-//  install and use the actual GLUT library SDK.
-#   define USE_MINI_GLUT
-#endif
-
-#if defined(USE_MINI_GLUT)
-#   include "../src/MiniGLUT.h"
-#elif defined(_MACOSX)
-#   include <GLUT/glut.h>
-#else
-#   include <GL/glut.h>
-#endif
-
-#define REBAR_NAME "temp.rbr"
-
-
-// This example displays one of the following shapes
-typedef enum { SHAPE_TEAPOT=1, SHAPE_TORUS, SHAPE_CONE, SHAPE_SPHERE } Shape;
-#define NUM_SHAPES 4
-Shape g_CurrentShape = SHAPE_TORUS;
-// Shapes scale
-float g_Zoom = 1.0f;
-// Shape orientation (stored as a quaternion)
-float g_Rotation[] = { 0.0f, 0.0f, 0.0f, 1.0f };
-// Auto rotate
-int g_AutoRotate = 0;
-int g_RotateTime = 0;
-float g_RotateStart[] = { 0.0f, 0.0f, 0.0f, 1.0f };
-// Shapes material
-float g_MatAmbient[] = { 0.5f, 0.0f, 0.0f, 1.0f };
-float g_MatDiffuse[] = { 1.0f, 1.0f, 0.0f, 1.0f };
-// Light parameter
-double g_LightMultiplier = 1.0f;
-float g_LightDirection[] = { -0.57735f, -0.57735f, -0.57735f };
-
-igl::anttweakbar::ReTwBar rebar; // Pointer to the tweak bar
-
-// Routine to set a quaternion from a rotation axis and angle
-// ( input axis = float[3] angle = float  output: quat = float[4] )
-void SetQuaternionFromAxisAngle(const float *axis, float angle, float *quat)
-{
-  float sina2, norm;
-  sina2 = (float)sin(0.5f * angle);
-  norm = (float)sqrt(axis[0]*axis[0] + axis[1]*axis[1] + axis[2]*axis[2]);
-  quat[0] = sina2 * axis[0] / norm;
-  quat[1] = sina2 * axis[1] / norm;
-  quat[2] = sina2 * axis[2] / norm;
-  quat[3] = (float)cos(0.5f * angle);
-
-}
-
-
-// Routine to convert a quaternion to a 4x4 matrix
-// ( input: quat = float[4]  output: mat = float[4*4] )
-void ConvertQuaternionToMatrix(const float *quat, float *mat)
-{
-  float yy2 = 2.0f * quat[1] * quat[1];
-  float xy2 = 2.0f * quat[0] * quat[1];
-  float xz2 = 2.0f * quat[0] * quat[2];
-  float yz2 = 2.0f * quat[1] * quat[2];
-  float zz2 = 2.0f * quat[2] * quat[2];
-  float wz2 = 2.0f * quat[3] * quat[2];
-  float wy2 = 2.0f * quat[3] * quat[1];
-  float wx2 = 2.0f * quat[3] * quat[0];
-  float xx2 = 2.0f * quat[0] * quat[0];
-  mat[0*4+0] = - yy2 - zz2 + 1.0f;
-  mat[0*4+1] = xy2 + wz2;
-  mat[0*4+2] = xz2 - wy2;
-  mat[0*4+3] = 0;
-  mat[1*4+0] = xy2 - wz2;
-  mat[1*4+1] = - xx2 - zz2 + 1.0f;
-  mat[1*4+2] = yz2 + wx2;
-  mat[1*4+3] = 0;
-  mat[2*4+0] = xz2 + wy2;
-  mat[2*4+1] = yz2 - wx2;
-  mat[2*4+2] = - xx2 - yy2 + 1.0f;
-  mat[2*4+3] = 0;
-  mat[3*4+0] = mat[3*4+1] = mat[3*4+2] = 0;
-  mat[3*4+3] = 1;
-}
-
-
-// Routine to multiply 2 quaternions (ie, compose rotations)
-// ( input q1 = float[4] q2 = float[4]  output: qout = float[4] )
-void MultiplyQuaternions(const float *q1, const float *q2, float *qout)
-{
-  float qr[4];
-	qr[0] = q1[3]*q2[0] + q1[0]*q2[3] + q1[1]*q2[2] - q1[2]*q2[1];
-	qr[1] = q1[3]*q2[1] + q1[1]*q2[3] + q1[2]*q2[0] - q1[0]*q2[2];
-	qr[2] = q1[3]*q2[2] + q1[2]*q2[3] + q1[0]*q2[1] - q1[1]*q2[0];
-	qr[3]  = q1[3]*q2[3] - (q1[0]*q2[0] + q1[1]*q2[1] + q1[2]*q2[2]);
-  qout[0] = qr[0]; qout[1] = qr[1]; qout[2] = qr[2]; qout[3] = qr[3];
-}
-
-
-// Callback function called by GLUT to render screen
-void Display(void)
-{
-  float v[4]; // will be used to set light paramters
-  float mat[4*4]; // rotation matrix
-
-  // Clear frame buffer
-  glClearColor(0, 0, 0, 1);
-  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
-  glEnable(GL_DEPTH_TEST);
-  glDisable(GL_CULL_FACE);
-  glEnable(GL_NORMALIZE);
-
-  // Set light
-  glEnable(GL_LIGHTING);
-  glEnable(GL_LIGHT0);
-  v[0] = v[1] = v[2] = g_LightMultiplier*0.4f; v[3] = 1.0f;
-  glLightfv(GL_LIGHT0, GL_AMBIENT, v);
-  v[0] = v[1] = v[2] = g_LightMultiplier*0.8f; v[3] = 1.0f;
-  glLightfv(GL_LIGHT0, GL_DIFFUSE, v);
-  v[0] = -g_LightDirection[0]; v[1] = -g_LightDirection[1]; v[2] = -g_LightDirection[2]; v[3] = 0.0f;
-  glLightfv(GL_LIGHT0, GL_POSITION, v);
-
-  // Set material
-  glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, g_MatAmbient);
-  glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, g_MatDiffuse);
-
-  // Rotate and draw shape
-  glPushMatrix();
-  glTranslatef(0.5f, -0.3f, 0.0f);
-  if( g_AutoRotate )
-  {
-    float axis[3] = { 0, 1, 0 };
-    float angle = (float)(glutGet(GLUT_ELAPSED_TIME)-g_RotateTime)/1000.0f;
-    float quat[4];
-    SetQuaternionFromAxisAngle(axis, angle, quat);
-    MultiplyQuaternions(g_RotateStart, quat, g_Rotation);
-  }
-  ConvertQuaternionToMatrix(g_Rotation, mat);
-  glMultMatrixf(mat);
-  glScalef(g_Zoom, g_Zoom, g_Zoom);
-  glCallList(g_CurrentShape);
-  glPopMatrix();
-
-  // Draw tweak bars
-  TwDraw();
-
-  // Present frame buffer
-  glutSwapBuffers();
-
-  // Recall Display at next frame
-  glutPostRedisplay();
-}
-
-
-// Callback function called by GLUT when window size changes
-void Reshape(int width, int height)
-{
-  // Set OpenGL viewport and camera
-  glViewport(0, 0, width, height);
-  glMatrixMode(GL_PROJECTION);
-  glLoadIdentity();
-  gluPerspective(40, (double)width/height, 1, 10);
-  glMatrixMode(GL_MODELVIEW);
-  glLoadIdentity();
-  gluLookAt(0,0,5, 0,0,0, 0,1,0);
-  glTranslatef(0, 0.6f, -1);
-
-  // Send the new window size to AntTweakBar
-  TwWindowSize(width, height);
-}
-
-
-// Function called at exit
-void Terminate(void)
-{
-  rebar.save(REBAR_NAME);
-
-  glDeleteLists(SHAPE_TEAPOT, NUM_SHAPES);
-
-  TwTerminate();
-}
-
-
-//  Callback function called when the 'AutoRotate' variable value of the tweak bar has changed
-void TW_CALL SetAutoRotateCB(const void *value, void *clientData)
-{
-  (void)clientData; // unused
-
-  g_AutoRotate = *(const int *)(value); // copy value to g_AutoRotate
-  if( g_AutoRotate!=0 )
-  {
-    // init rotation
-    g_RotateTime = glutGet(GLUT_ELAPSED_TIME);
-    g_RotateStart[0] = g_Rotation[0];
-    g_RotateStart[1] = g_Rotation[1];
-    g_RotateStart[2] = g_Rotation[2];
-    g_RotateStart[3] = g_Rotation[3];
-
-    // make Rotation variable read-only
-    TwDefine(" TweakBar/ObjRotation readonly ");
-  }
-  else
-    // make Rotation variable read-write
-    TwDefine(" TweakBar/ObjRotation readwrite ");
-}
-
-
-//  Callback function called by the tweak bar to get the 'AutoRotate' value
-void TW_CALL GetAutoRotateCB(void *value, void *clientData)
-{
-  (void)clientData; // unused
-  *(int *)(value) = g_AutoRotate; // copy g_AutoRotate to value
-}
-
-
-// Main
-int main(int argc, char *argv[])
-{
-  float axis[] = { 0.7f, 0.7f, 0.0f }; // initial model rotation
-  float angle = 0.8f;
-
-  // Initialize AntTweakBar
-  // (note that AntTweakBar could also be intialized after GLUT, no matter)
-  if( !TwInit(TW_OPENGL, NULL) )
-  {
-    // A fatal error occured
-    fprintf(stderr, "AntTweakBar initialization failed: %s\n", TwGetLastError());
-    return 1;
-  }
-
-  // Initialize GLUT
-  glutInit(&argc, argv);
-  glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);
-  glutInitWindowSize(640, 480);
-  glutCreateWindow("AntTweakBar simple example using GLUT");
-  glutCreateMenu(NULL);
-
-  // Set GLUT callbacks
-  glutDisplayFunc(Display);
-  glutReshapeFunc(Reshape);
-  atexit(Terminate);  // Called after glutMainLoop ends
-
-  // Set GLUT event callbacks
-  // - Directly redirect GLUT mouse button events to AntTweakBar
-  glutMouseFunc((GLUTmousebuttonfun)TwEventMouseButtonGLUT);
-  // - Directly redirect GLUT mouse motion events to AntTweakBar
-  glutMotionFunc((GLUTmousemotionfun)TwEventMouseMotionGLUT);
-  // - Directly redirect GLUT mouse "passive" motion events to AntTweakBar (same as MouseMotion)
-  glutPassiveMotionFunc((GLUTmousemotionfun)TwEventMouseMotionGLUT);
-  // - Directly redirect GLUT key events to AntTweakBar
-  glutKeyboardFunc((GLUTkeyboardfun)TwEventKeyboardGLUT);
-  // - Directly redirect GLUT special key events to AntTweakBar
-  glutSpecialFunc((GLUTspecialfun)TwEventSpecialGLUT);
-  // - Send 'glutGetModifers' function pointer to AntTweakBar;
-  //   required because the GLUT key event functions do not report key modifiers states.
-  TwGLUTModifiersFunc(glutGetModifiers);
-
-  // Create some 3D objects (stored in display lists)
-  glNewList(SHAPE_TEAPOT, GL_COMPILE);
-  glutSolidTeapot(1.0);
-  glEndList();
-  glNewList(SHAPE_TORUS, GL_COMPILE);
-  glutSolidTorus(0.3, 1.0, 16, 32);
-  glEndList();
-  glNewList(SHAPE_CONE, GL_COMPILE);
-  glutSolidCone(1.0, 1.5, 64, 4);
-  glEndList();
-  glNewList(SHAPE_SPHERE, GL_COMPILE);
-  glutSolidSphere(1.0, 50, 40);
-  glEndList();
-
-  // Create a tweak bar
-  rebar.TwNewBar("TweakBar");
-  TwDefine(" GLOBAL help='This example shows how to integrate AntTweakBar with GLUT and OpenGL.' "); // Message added to the help bar.
-  TwDefine(" TweakBar size='200 400' color='96 216 224' "); // change default tweak bar size and color
-
-  // Add 'g_Zoom' to 'bar': this is a modifable (RW) variable of type TW_TYPE_FLOAT. Its key shortcuts are [z] and [Z].
-  rebar.TwAddVarRW("Zoom", TW_TYPE_FLOAT, &g_Zoom,
-             " min=0.01 max=2.5 step=0.01 keyIncr=z keyDecr=Z help='Scale the object (1=original size).' ");
-
-  // Add 'g_Rotation' to 'bar': this is a variable of type TW_TYPE_QUAT4F which defines the object's orientation
-  rebar.TwAddVarRW("ObjRotation", TW_TYPE_QUAT4F, &g_Rotation,
-             " label='Object rotation' open help='Change the object orientation.' ");
-
-  // Add callback to toggle auto-rotate mode (callback functions are defined above).
-  rebar.TwAddVarCB("AutoRotate", TW_TYPE_BOOL32, SetAutoRotateCB, GetAutoRotateCB, NULL,
-             " label='Auto-rotate' key=space help='Toggle auto-rotate mode.' ");
-
-  // Add 'g_LightMultiplier' to 'bar': this is a variable of type TW_TYPE_FLOAT. Its key shortcuts are [+] and [-].
-  rebar.TwAddVarRW("Multiplier", TW_TYPE_DOUBLE, &g_LightMultiplier,
-             " label='Light booster' min=0.1 max=4 step=0.02 keyIncr='+' keyDecr='-' help='Increase/decrease the light power.' ");
-
-  // Add 'g_LightDirection' to 'bar': this is a variable of type TW_TYPE_DIR3F which defines the light direction
-  rebar.TwAddVarRW("Light Dir", TW_TYPE_DIR3F, &g_LightDirection,
-             " label='Light direction' open help='Change the light direction.' ");
-
-  // Add 'g_MatAmbient' to 'bar': this is a variable of type TW_TYPE_COLOR3F (3 floats color, alpha is ignored)
-  // and is inserted into a group named 'Material'.
-  rebar.TwAddVarRW("Ambient", TW_TYPE_COLOR3F, &g_MatAmbient, " group='Material' ");
-
-  // Add 'g_MatDiffuse' to 'bar': this is a variable of type TW_TYPE_COLOR3F (3 floats color, alpha is ignored)
-  // and is inserted into group 'Material'.
-  rebar.TwAddVarRW("Diffuse", TW_TYPE_COLOR3F, &g_MatDiffuse, " group='Material' ");
-
-  // Add the enum variable 'g_CurrentShape' to 'bar'
-  // (before adding an enum variable, its enum type must be declared to AntTweakBar as follow)
-  {
-    // ShapeEV associates Shape enum values with labels that will be displayed instead of enum values
-    TwEnumVal shapeEV[NUM_SHAPES] = { {SHAPE_TEAPOT, "Teapot"}, {SHAPE_TORUS, "Torus"}, {SHAPE_CONE, "Cone"} , {SHAPE_SPHERE, "Sphere"}};
-    // Create a type for the enum shapeEV
-    TwType shapeType = igl::anttweakbar::ReTwDefineEnum("ShapeType", shapeEV, NUM_SHAPES);
-    // add 'g_CurrentShape' to 'bar': this is a variable of type ShapeType. Its key shortcuts are [<] and [>].
-    rebar.TwAddVarRW("Shape", shapeType, &g_CurrentShape, " keyIncr='<' keyDecr='>' help='Change object shape.' ");
-  }
-
-  // Store time
-  g_RotateTime = glutGet(GLUT_ELAPSED_TIME);
-  // Init rotation
-  SetQuaternionFromAxisAngle(axis, angle, g_Rotation);
-  SetQuaternionFromAxisAngle(axis, angle, g_RotateStart);
-
-  FILE * fp = fopen(REBAR_NAME,"r");
-  if(fp != NULL)
-  {
-    fclose(fp);
-    if(rebar.load(REBAR_NAME))
-    {
-      printf("ReAntTweakBar reloaded successfully from %s.\n",REBAR_NAME);
-    }else
-    {
-      printf("ReAntTweakBar failed to load from %s.\n",REBAR_NAME);
-    }
-  }else
-  {
-    printf("%s ReAntTweakBar file does not exist (yet).\n",REBAR_NAME);
-  }
-
-  // Call the GLUT main loop
-  glutMainLoop();
-
-  return 0;
-}
-

examples/affine/Makefile

@@ -1,21 +0,0 @@
-.PHONY: all
-
-all: example
-
-# Shared flags etc.
-include ../Makefile.conf
-
-.PHONY: example
-
-CFLAGS+=-g
-inc=$(LIBIGL_INC) $(EIGEN3_INC)
-lib=$(LIBIGL_LIB)
-
-example: example.o
-	g++ $(CFLAGS) -o example example.o $(lib)
-
-example.o: example.cpp
-	g++ $(CFLAGS) -c example.cpp -o example.o $(inc)
-clean:
-	rm -f example.o
-	rm -f example

examples/affine/README

@@ -1,8 +0,0 @@
-A small program showing how .translate and .rotate affect eigen's Affine matrix class
-
-
-Compile with:
-  make
-
-Run with:
-  ./example

examples/affine/example.cpp

@@ -1,33 +0,0 @@
-#include <Eigen/Geometry>
-#include <iostream>
-using namespace std;
-
-typedef Eigen::Transform<double,3,Eigen::Affine> Tform3;
-typedef Eigen::Vector3d Vec3;
-typedef Eigen::Quaterniond Quat;
-
-int main(int argc, char * argv[])
-{
-  Tform3 T;
-  T =Tform3::Identity();
-  cout<<"T =Tform3::Identity();"<<endl;
-  cout<<"T=["<<endl<<T.affine().matrix()<<endl<<"];"<<endl;
-  cout<<"T.translate(Vec3(1,2,3));"<<endl;
-  T.translate(Vec3(1,2,3));
-  cout<<"T=["<<endl<<T.affine().matrix()<<endl<<"];"<<endl;
-  cout<<"T.rotate(Quat(0,1,0,0));"<<endl;
-  T.rotate(Quat(0,1,0,0));
-  cout<<"T=["<<endl<<T.affine().matrix()<<endl<<"];"<<endl;
-  cout<<endl;
-
-  T =Tform3::Identity();
-  cout<<"T =Tform3::Identity();"<<endl;
-  cout<<"T=["<<endl<<T.affine().matrix()<<endl<<"];"<<endl;
-  cout<<"T.rotate(Quat(0,1,0,0));"<<endl;
-  T.rotate(Quat(0,1,0,0));
-  cout<<"T=["<<endl<<T.affine().matrix()<<endl<<"];"<<endl;
-  cout<<"T.translate(Vec3(1,2,3));"<<endl;
-  T.translate(Vec3(1,2,3));
-  cout<<"T=["<<endl<<T.affine().matrix()<<endl<<"];"<<endl;
-  cout<<endl;
-}

examples/ambient-occlusion/Makefile

@@ -1,25 +0,0 @@
-.PHONY: all
-
-# Shared flags etc.
-include ../Makefile.conf
-LIBIGL_LIB+=-liglembree
-
-all: example
-
-.PHONY: example
-
-EMBREE=$(LIBIGL)/external/embree
-EMBREE_INC=-I$(EMBREE)/ -I$(EMBREE)/include
-EMBREE_LIB=-L$(EMBREE)/build -lembree -lsys
-
-INC=$(LIBIGL_INC) $(ANTTWEAKBAR_INC) $(EIGEN3_INC) $(EMBREE_INC)
-LIB=$(OPENGL_LIB) $(GLUT_LIB) $(ANTTWEAKBAR_LIB) $(LIBIGL_LIB) $(EMBREE_LIB)
-
-example: example.o
-	g++ $(OPENMP) $(AFLAGS) $(CFLAGS) $(LIB) -o example example.o 
-
-example.o: example.cpp
-	g++ $(OPENMP) $(AFLAGS) $(CFLAGS) -c example.cpp -o example.o $(INC)
-clean:
-	rm -f example.o
-	rm -f example

examples/ambient-occlusion/example.cpp

@@ -1,411 +0,0 @@
-#include <igl/opengl/OpenGL_convenience.h>
-#include <igl/per_face_normals.h>
-#include <igl/per_vertex_normals.h>
-#include <igl/normalize_row_lengths.h>
-#include <igl/opengl2/draw_mesh.h>
-#include <igl/opengl2/draw_floor.h>
-#include <igl/quat_to_mat.h>
-#include <igl/opengl/report_gl_error.h>
-#include <igl/readOBJ.h>
-#include <igl/readDMAT.h>
-#include <igl/readOFF.h>
-#include <igl/readMESH.h>
-#include <igl/readWRL.h>
-#include <igl/trackball.h>
-#include <igl/list_to_matrix.h>
-#include <igl/polygon_mesh_to_triangle_mesh.h>
-#include <igl/material_colors.h>
-#include <igl/barycenter.h>
-#include <igl/matlab_format.h>
-#include <igl/anttweakbar/ReAntTweakBar.h>
-#include <igl/pathinfo.h>
-#include <igl/embree/EmbreeIntersector.h>
-#include <igl/embree/ambient_occlusion.h>
-
-#ifdef __APPLE__
-#  include <GLUT/glut.h>
-#else
-#  include <GL/glut.h>
-#endif
-
-#include <Eigen/Core>
-
-#include <vector>
-#include <iostream>
-#include <algorithm>
-
-// Width and height of window
-int width,height;
-// Rotation of scene
-float scene_rot[4] = {0,0,0,1};
-// information at mouse down
-float down_scene_rot[4] = {0,0,0,1};
-bool trackball_on = false;
-int down_mouse_x,down_mouse_y;
-// Position of light
-float light_pos[4] = {0.1,0.1,-0.9,0};
-// Vertex positions, normals, colors and centroid
-Eigen::MatrixXd V,N,C,mid;
-// Faces
-Eigen::MatrixXi F;
-// Bounding box diagonal length
-double bbd;
-igl::embree::EmbreeIntersector ei;
-// Running ambient occlusion
-Eigen::VectorXd S;
-int tot_num_samples = 0;
-#define REBAR_NAME "temp.rbr"
-igl::anttweakbar::ReTwBar rebar; // Pointer to the tweak bar
-bool lights_on = true;
-Eigen::Vector4f color(0.4,0.8,0.3,1.0);
-double ao_factor = 1.0;
-bool ao_normalize = false;
-bool ao_on = true;
-double light_intensity = 1.0;
-
-void reshape(int width,int height)
-{
-  using namespace std;
-  // Save width and height
-  ::width = width;
-  ::height = height;
-  glMatrixMode(GL_PROJECTION);
-  glLoadIdentity();
-  glViewport(0,0,width,height);
-  // Send the new window size to AntTweakBar
-  TwWindowSize(width, height);
-}
-
-// Set up igl::opengl2::projection and model view of scene
-void push_scene()
-{
-  using namespace igl;
-  glMatrixMode(GL_PROJECTION);
-  glLoadIdentity();
-  gluPerspective(45,(double)width/(double)height,1e-2,100);
-  glMatrixMode(GL_MODELVIEW);
-  glLoadIdentity();
-  gluLookAt(0,0,3,0,0,0,0,1,0);
-  glPushMatrix();
-  float mat[4*4];
-  quat_to_mat(scene_rot,mat);
-  glMultMatrixf(mat);
-}
-
-void pop_scene()
-{
-  glPopMatrix();
-}
-
-// Scale and shift for object
-void push_object()
-{
-  glPushMatrix();
-  glScaled(2./bbd,2./bbd,2./bbd);
-  glTranslated(-mid(0,0),-mid(0,1),-mid(0,2));
-}
-
-void pop_object()
-{
-  glPopMatrix();
-}
-
-// Set up double-sided lights
-void lights()
-{
-  using namespace std;
-  glEnable(GL_LIGHTING);
-  glLightModelf(GL_LIGHT_MODEL_TWO_SIDE,GL_TRUE);
-  glEnable(GL_LIGHT0);
-  glEnable(GL_LIGHT1);
-  float amb[4];
-  amb[0] = amb[1] = amb[2] = light_intensity;
-  amb[3] = 1.0;
-  float diff[4] = {0.0,0.0,0.0,0.0};
-  diff[0] = diff[1] = diff[2] = (1.0 - light_intensity/0.4);;
-  diff[3] = 1.0;
-  float zeros[4] = {0.0,0.0,0.0,0.0};
-  float pos[4];
-  copy(light_pos,light_pos+4,pos);
-  glLightfv(GL_LIGHT0,GL_AMBIENT,amb);
-  glLightfv(GL_LIGHT0,GL_DIFFUSE,diff);
-  glLightfv(GL_LIGHT0,GL_SPECULAR,zeros);
-  glLightfv(GL_LIGHT0,GL_POSITION,pos);
-  pos[0] *= -1;
-  pos[1] *= -1;
-  pos[2] *= -1;
-  glLightfv(GL_LIGHT1,GL_AMBIENT,amb);
-  glLightfv(GL_LIGHT1,GL_DIFFUSE,diff);
-  glLightfv(GL_LIGHT1,GL_SPECULAR,zeros);
-  glLightfv(GL_LIGHT1,GL_POSITION,pos);
-}
-
-const float back[4] = {30.0/255.0,30.0/255.0,50.0/255.0,0};
-void display()
-{
-  using namespace Eigen;
-  using namespace igl;
-  using namespace std;
-
-  if(!trackball_on && tot_num_samples < 10000)
-  {
-    if(S.size() == 0)
-    {
-      S.resize(V.rows());
-      S.setZero();
-    }
-    VectorXd Si;
-    const int num_samples = 20;
-    igl::embree::ambient_occlusion(ei,V,N,num_samples,Si);
-    S *= (double)tot_num_samples;
-    S += Si*(double)num_samples;
-    tot_num_samples += num_samples;
-    S /= (double)tot_num_samples;
-  }
-
-  // Convert to 1-intensity
-  C.conservativeResize(S.rows(),3);
-  if(ao_on)
-  {
-    C<<S,S,S;
-    C.array() = (1.0-ao_factor*C.array());
-  }else
-  {
-    C.setConstant(1.0);
-  }
-  if(ao_normalize)
-  {
-    C.col(0) *= ((double)C.rows())/C.col(0).sum();
-    C.col(1) *= ((double)C.rows())/C.col(1).sum();
-    C.col(2) *= ((double)C.rows())/C.col(2).sum();
-  }
-  C.col(0) *= color(0);
-  C.col(1) *= color(1);
-  C.col(2) *= color(2);
-
-  glClearColor(back[0],back[1],back[2],0);
-  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-  // All smooth points
-  glEnable( GL_POINT_SMOOTH );
-
-  glDisable(GL_LIGHTING);
-  if(lights_on)
-  {
-    lights();
-  }
-  push_scene();
-  glEnable(GL_DEPTH_TEST);
-  glDepthFunc(GL_LEQUAL);
-  glEnable(GL_NORMALIZE);
-  glEnable(GL_COLOR_MATERIAL);
-  glColorMaterial(GL_FRONT_AND_BACK,GL_AMBIENT_AND_DIFFUSE);
-  push_object();
-
-  // Draw the model
-  // Set material properties
-  glEnable(GL_COLOR_MATERIAL);
-  igl::opengl2::draw_mesh(V,F,N,C);
-
-  pop_object();
-
-  // Draw a nice floor
-  glPushMatrix();
-  const double floor_offset =
-    -2./bbd*(V.col(1).maxCoeff()-mid(1));
-  glTranslated(0,floor_offset,0);
-  const float GREY[4] = {0.5,0.5,0.6,1.0};
-  const float DARK_GREY[4] = {0.2,0.2,0.3,1.0};
-  igl::opengl2::draw_floor(GREY,DARK_GREY);
-  glPopMatrix();
-
-  pop_scene();
-
-  igl::opengl::report_gl_error();
-
-  TwDraw();
-  glutSwapBuffers();
-  glutPostRedisplay();
-}
-
-void mouse(int glutButton, int glutState, int mouse_x, int mouse_y)
-{
-  using namespace std;
-  using namespace Eigen;
-  using namespace igl;
-  bool tw_using = TwEventMouseButtonGLUT(glutButton,glutState,mouse_x,mouse_y);
-  switch(glutState)
-  {
-    case 1:
-      // up
-      glutSetCursor(GLUT_CURSOR_LEFT_ARROW);
-      trackball_on = false;
-      break;
-    case 0:
-      // down
-      if(!tw_using)
-      {
-        glutSetCursor(GLUT_CURSOR_CYCLE);
-        // collect information for trackball
-        trackball_on = true;
-        copy(scene_rot,scene_rot+4,down_scene_rot);
-        down_mouse_x = mouse_x;
-        down_mouse_y = mouse_y;
-      }
-    break;
-  }
-}
-
-void mouse_drag(int mouse_x, int mouse_y)
-{
-  using namespace igl;
-
-
-  if(trackball_on)
-  {
-    // Rotate according to trackball
-    trackball<float>(
-      width,
-      height,
-      2,
-      down_scene_rot,
-      down_mouse_x,
-      down_mouse_y,
-      mouse_x,
-      mouse_y,
-      scene_rot);
-  }else
-  {
-    TwEventMouseMotionGLUT(mouse_x, mouse_y);
-  }
-}
-
-
-void key(unsigned char key, int mouse_x, int mouse_y)
-{
-  using namespace std;
-  switch(key)
-  {
-    // ESC
-    case char(27):
-      rebar.save(REBAR_NAME);
-    // ^C
-    case char(3):
-      exit(0);
-    default:
-      if(!TwEventKeyboardGLUT(key,mouse_x,mouse_y))
-      {
-        cout<<"Unknown key command: "<<key<<" "<<int(key)<<endl;
-      }
-  }
-
-}
-
-
-int main(int argc, char * argv[])
-{
-  using namespace Eigen;
-  using namespace igl;
-  using namespace std;
-
-  // init mesh
-  string filename = "../shared/beast.obj";
-  if(argc < 2)
-  {
-    cerr<<"Usage:"<<endl<<"    ./example input.obj"<<endl;
-    cout<<endl<<"Opening default mesh..."<<endl;
-  }else
-  {
-    // Read and prepare mesh
-    filename = argv[1];
-  }
-
-  // dirname, basename, extension and filename
-  string d,b,ext,f;
-  pathinfo(filename,d,b,ext,f);
-  // Convert extension to lower case
-  transform(ext.begin(), ext.end(), ext.begin(), ::tolower);
-  vector<vector<double > > vV,vN,vTC;
-  vector<vector<int > > vF,vFTC,vFN;
-  if(ext == "obj")
-  {
-    // Convert extension to lower case
-    if(!igl::readOBJ(filename,vV,vTC,vN,vF,vFTC,vFN))
-    {
-      return 1;
-    }
-  }else if(ext == "off")
-  {
-    // Convert extension to lower case
-    if(!igl::readOFF(filename,vV,vF,vN))
-    {
-      return 1;
-    }
-  }else if(ext == "wrl")
-  {
-    // Convert extension to lower case
-    if(!igl::readWRL(filename,vV,vF))
-    {
-      return 1;
-    }
-  //}else
-  //{
-  //  // Convert extension to lower case
-  //  MatrixXi T;
-  //  if(!igl::readMESH(filename,V,T,F))
-  //  {
-  //    return 1;
-  //  }
-  //  //if(F.size() > T.size() || F.size() == 0)
-  //  {
-  //    boundary_facets(T,F);
-  //  }
-  }
-  if(vV.size() > 0)
-  {
-    if(!list_to_matrix(vV,V))
-    {
-      return 1;
-    }
-    polygon_mesh_to_triangle_mesh(vF,F);
-  }
-
-  // Compute normals, centroid, colors, bounding box diagonal
-  per_vertex_normals(V,F,N);
-  mid = 0.5*(V.colwise().maxCoeff() + V.colwise().minCoeff());
-  bbd = (V.colwise().maxCoeff() - V.colwise().minCoeff()).maxCoeff();
-
-  // Init embree
-  ei.init(V.cast<float>(),F.cast<int>());
-
-  // Init glut
-  glutInit(&argc,argv);
-
-  if( !TwInit(TW_OPENGL, NULL) )
-  {
-    // A fatal error occured
-    fprintf(stderr, "AntTweakBar initialization failed: %s\n", TwGetLastError());
-    return 1;
-  }
-  // Create a tweak bar
-  rebar.TwNewBar("TweakBar");
-  rebar.TwAddVarRW("scene_rot", TW_TYPE_QUAT4F, &scene_rot, "");
-  rebar.TwAddVarRW("lights_on", TW_TYPE_BOOLCPP, &lights_on, "key=l");
-  rebar.TwAddVarRW("color", TW_TYPE_COLOR4F, color.data(), "colormode=hls");
-  rebar.TwAddVarRW("ao_factor", TW_TYPE_DOUBLE, &ao_factor, "min=0 max=1 step=0.2 keyIncr=] keyDecr=[ ");
-  rebar.TwAddVarRW("ao_normalize", TW_TYPE_BOOLCPP, &ao_normalize, "key=n");
-  rebar.TwAddVarRW("ao_on", TW_TYPE_BOOLCPP, &ao_on, "key=a");
-  rebar.TwAddVarRW("light_intensity", TW_TYPE_DOUBLE, &light_intensity, "min=0 max=0.4 step=0.1 keyIncr=} keyDecr={ ");
-  rebar.load(REBAR_NAME);
-
-  glutInitDisplayString( "rgba depth double samples>=8 ");
-  glutInitWindowSize(glutGet(GLUT_SCREEN_WIDTH)/2.0,glutGet(GLUT_SCREEN_HEIGHT));
-  glutCreateWindow("ambient-occlusion");
-  glutDisplayFunc(display);
-  glutReshapeFunc(reshape);
-  glutKeyboardFunc(key);
-  glutMouseFunc(mouse);
-  glutMotionFunc(mouse_drag);
-  glutPassiveMotionFunc((GLUTmousemotionfun)TwEventMouseMotionGLUT);
-  glutMainLoop();
-  return 0;
-}

examples/arap/Makefile

@@ -1,24 +0,0 @@
-.PHONY: all
-
-# Shared flags etc.
-include ../Makefile.conf
-
-all: example
-
-.PHONY: example
-
-INC=$(LIBIGL_INC) $(ANTTWEAKBAR_INC) $(EIGEN3_INC) $(YIMG_INC) $(SINGULAR_VALUE_DECOMPOSITION_INC)
-LIB=$(OPENGL_LIB) $(GLUT_LIB) $(ANTTWEAKBAR_LIB) $(LIBIGL_LIB) $(YIMG_LIB) 
-
-example: example.o
-	g++ $(OPENMP) $(AFLAGS) $(CFLAGS) $(LIB) -o example $^
-
-%.o: %.cpp
-	g++ $(OPENMP) $(AFLAGS) $(CFLAGS) -c $< -o $@ $(INC)
-
-%.o: %.cpp %.h
-	g++ $(OPENMP) $(AFLAGS) $(CFLAGS) -c $< -o $@ $(INC)
-
-clean:
-	rm -f example.o
-	rm -f example

examples/arap/example.cpp

@@ -1,750 +0,0 @@
-#include <igl/Camera.h>
-#include <igl/opengl/OpenGL_convenience.h>
-#include <igl/PI.h>
-#include <igl/STR.h>
-#include <igl/arap.h>
-#include <igl/barycenter.h>
-#include <igl/cotmatrix.h>
-#include <igl/opengl2/draw_floor.h>
-#include <igl/opengl2/draw_mesh.h>
-#include <igl/get_seconds.h>
-#include <igl/harmonic.h>
-#include <igl/invert_diag.h>
-#include <igl/jet.h>
-#include <igl/list_to_matrix.h>
-#include <igl/massmatrix.h>
-#include <igl/material_colors.h>
-#include <igl/matlab_format.h>
-#include <igl/normalize_row_lengths.h>
-#include <igl/partition.h>
-#include <igl/pathinfo.h>
-#include <igl/per_face_normals.h>
-#include <igl/per_vertex_normals.h>
-#include <igl/polygon_mesh_to_triangle_mesh.h>
-#include <igl/quat_to_mat.h>
-#include <igl/readDMAT.h>
-#include <igl/readMESH.h>
-#include <igl/readOBJ.h>
-#include <igl/readOFF.h>
-#include <igl/readWRL.h>
-#include <igl/opengl/report_gl_error.h>
-#include <igl/snap_to_canonical_view_quat.h>
-#include <igl/snap_to_fixed_up.h>
-#include <igl/trackball.h>
-#include <igl/two_axis_valuator_fixed_up.h>
-#include <igl/writeDMAT.h>
-#include <igl/anttweakbar/ReAntTweakBar.h>
-
-#ifdef __APPLE__
-#  include <GLUT/glut.h>
-#else
-#  include <GL/glut.h>
-#endif
-
-#include <Eigen/Core>
-
-#include <vector>
-#include <iostream>
-#include <algorithm>
-
-struct State
-{
-  igl::Camera camera;
-} s;
-enum RotationType
-{
-  ROTATION_TYPE_IGL_TRACKBALL = 0,
-  ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP = 1,
-  NUM_ROTATION_TYPES = 2,
-} rotation_type;
-bool is_rotating = false;
-int down_x,down_y;
-igl::Camera down_camera;
-bool is_animating = false;
-double animation_start_time = 0;
-double ANIMATION_DURATION = 0.5;
-Eigen::Quaterniond animation_from_quat;
-Eigen::Quaterniond animation_to_quat;
-// Use vector for range-based `for`
-std::vector<State> undo_stack;
-std::vector<State> redo_stack;
-bool paused = false;
-double t = 0;
-double pause_time = 0.0;
-
-void push_undo()
-{
-  undo_stack.push_back(s);
-  // Clear
-  redo_stack = std::vector<State>();
-}
-
-void undo()
-{
-  using namespace std;
-  if(!undo_stack.empty())
-  {
-    redo_stack.push_back(s);
-    s = undo_stack.front();
-    undo_stack.pop_back();
-  }
-}
-
-void redo()
-{
-  using namespace std;
-  if(!redo_stack.empty())
-  {
-    undo_stack.push_back(s);
-    s = redo_stack.front();
-    redo_stack.pop_back();
-  }
-}
-
-void TW_CALL set_rotation_type(const void * value, void * clientData)
-{
-  using namespace Eigen;
-  using namespace std;
-  using namespace igl;
-  const RotationType old_rotation_type = rotation_type;
-  rotation_type = *(const RotationType *)(value);
-  if(rotation_type == ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP &&
-    old_rotation_type != ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP)
-  {
-    push_undo();
-    animation_from_quat = s.camera.m_rotation_conj;
-    snap_to_fixed_up(animation_from_quat,animation_to_quat);
-    // start animation
-    animation_start_time = get_seconds();
-    is_animating = true;
-  }
-}
-
-void TW_CALL get_rotation_type(void * value, void *clientData)
-{
-  RotationType * rt = (RotationType *)(value);
-  *rt = rotation_type;
-}
-
-// Width and height of window
-int width,height;
-// Position of light
-float light_pos[4] = {0.1,0.1,-0.9,0};
-// Vertex positions, normals, colors and centroid
-Eigen::MatrixXd V,U,N,C,mid;
-Eigen::VectorXi S;
-igl::ARAPData arap_data;
-Eigen::MatrixXi F,T;
-int selected_col = 0;
-// Faces
-// Bounding box diagonal length
-double bbd;
-int tot_num_samples = 0;
-#define REBAR_NAME "temp.rbr"
-igl::anttweakbar::ReTwBar rebar; // Pointer to the tweak bar
-
-int num_in_selection(const Eigen::VectorXi & S)
-{
-  int count = 0;
-  for(int v = 0;v<S.rows(); v++)
-  {
-    if(S(v) >= 0)
-    {
-      count++;
-    }
-  }
-  return count;
-}
-
-bool init_arap()
-{
-  using namespace igl;
-  using namespace Eigen;
-  using namespace std;
-  VectorXi b(num_in_selection(S));
-  assert(S.rows() == V.rows());
-  C.resize(S.rows(),3);
-  MatrixXd bc = MatrixXd::Zero(b.size(),S.maxCoeff()+1);
-  MatrixXi * Ele;
-  if(T.rows()>0)
-  {
-    Ele = &T;
-  }else
-  {
-    Ele = &F;
-  }
-  // get b from S
-  {
-    int bi = 0;
-    for(int v = 0;v<S.rows(); v++)
-    {
-      if(S(v) >= 0)
-      {
-        b(bi) = v;
-        bc(bi,S(v)) = 1;
-        bi++;
-        switch(S(v))
-        {
-          case 0:
-            C.row(v) = RowVector3d(0.039,0.31,1);
-            break;
-          case 1:
-            C.row(v) = RowVector3d(1,0.41,0.70);
-            break;
-          default:
-            C.row(v) = RowVector3d(0.4,0.8,0.3);
-            break;
-        }
-      }else
-      {
-        C.row(v) = RowVector3d(
-          GOLD_DIFFUSE[0],
-          GOLD_DIFFUSE[1],
-          GOLD_DIFFUSE[2]);
-      }
-    }
-  }
-  // Store current mesh
-  U = V;
-  VectorXi _S;
-  VectorXd _D;
-  MatrixXd W;
-  if(!harmonic(V,*Ele,b,bc,1,W))
-  {
-    return false;
-  }
-  arap_data.with_dynamics = true;
-  arap_data.h = 0.05;
-  //arap_data.max_iter = 100;
-  //partition(W,100,arap_data.G,_S,_D);
-  return arap_precomputation(V,*Ele,V.cols(),b,arap_data);
-}
-
-bool update_arap()
-{
-  using namespace Eigen;
-  using namespace igl;
-  using namespace std;
-  MatrixXd bc(num_in_selection(S),V.cols());
-  // get b from S
-  {
-    if(!paused)
-    {
-      t = get_seconds()-pause_time;
-    }
-    int bi = 0;
-    for(int v = 0;v<S.rows(); v++)
-    {
-      if(S(v) >= 0)
-      {
-        bc.row(bi) = V.row(v);
-        switch(S(v))
-        {
-          case 0:
-          {
-            const double r = mid(0)*0.25;
-            bc(bi,0) += r*cos(0.5*t*2.*PI);
-            bc(bi,1) -= r+r*sin(0.5*t*2.*PI);
-            break;
-          }
-          case 1:
-          {
-            const double r = mid(1)*0.15;
-            bc(bi,1) += r+r*cos(0.15*t*2.*PI);
-            bc(bi,2) -= r*sin(0.15*t*2.*PI);
-
-            //// Pull-up
-            //bc(bi,0) += 0.42;//mid(0)*0.5;
-            //bc(bi,1) += 0.55;//mid(0)*0.5;
-            //// Bend
-            //Vector3d t(-1,0,0);
-            //Quaterniond q(AngleAxisd(PI/1.5,Vector3d(0,1.0,0.1).normalized()));
-            //const Vector3d a = bc.row(bi);
-            //bc.row(bi) = (q*(a-t) + t) + Vector3d(1.5,0.1,0.9);
-
-
-            break;
-          }
-          default:
-          break;
-        }
-        bi++;
-      }
-    }
-  }
-  if(!arap_solve(bc,arap_data,U))
-  {
-    cerr<<"arap_solve failed."<<endl;
-    return false;
-  }
-  per_face_normals(U,F,N);
-  return true;
-}
-
-void reshape(int width,int height)
-{
-  using namespace std;
-  // Save width and height
-  ::width = width;
-  ::height = height;
-  glMatrixMode(GL_PROJECTION);
-  glLoadIdentity();
-  glViewport(0,0,width,height);
-  // Send the new window size to AntTweakBar
-  TwWindowSize(width, height);
-  // Set aspect for all cameras
-  s.camera.m_aspect = (double)width/(double)height;
-  for(auto & s : undo_stack)
-  {
-    s.camera.m_aspect = (double)width/(double)height;
-  }
-  for(auto & s : redo_stack)
-  {
-    s.camera.m_aspect = (double)width/(double)height;
-  }
-}
-
-void push_scene()
-{
-  using namespace igl;
-  using namespace std;
-  glMatrixMode(GL_PROJECTION);
-  glPushMatrix();
-  glLoadIdentity();
-  auto & camera = s.camera;
-  gluPerspective(camera.m_angle,camera.m_aspect,camera.m_near,camera.m_far);
-  glMatrixMode(GL_MODELVIEW);
-  glPushMatrix();
-  glLoadIdentity();
-  gluLookAt(
-    camera.eye()(0), camera.eye()(1), camera.eye()(2),
-    camera.at()(0), camera.at()(1), camera.at()(2),
-    camera.up()(0), camera.up()(1), camera.up()(2));
-}
-
-void pop_scene()
-{
-  glMatrixMode(GL_PROJECTION);
-  glPopMatrix();
-  glMatrixMode(GL_MODELVIEW);
-  glPopMatrix();
-}
-
-void pop_object()
-{
-  glPopMatrix();
-}
-
-// Scale and shift for object
-void push_object()
-{
-  glPushMatrix();
-  glScaled(2./bbd,2./bbd,2./bbd);
-  glTranslated(-mid(0,0),-mid(0,1),-mid(0,2));
-}
-
-// Set up double-sided lights
-void lights()
-{
-  using namespace std;
-  glEnable(GL_LIGHTING);
-  glLightModelf(GL_LIGHT_MODEL_TWO_SIDE,GL_TRUE);
-  //glEnable(GL_LIGHT0);
-  glEnable(GL_LIGHT1);
-  float amb[4];
-  amb[0] = amb[1] = amb[2] = 0;
-  amb[3] = 1.0;
-  float diff[4] = {0.0,0.0,0.0,0.0};
-  diff[0] = diff[1] = diff[2] = (1.0 - 0/0.4);;
-  diff[3] = 1.0;
-  float zeros[4] = {0.0,0.0,0.0,0.0};
-  float pos[4];
-  copy(light_pos,light_pos+4,pos);
-  glLightfv(GL_LIGHT0,GL_AMBIENT,amb);
-  glLightfv(GL_LIGHT0,GL_DIFFUSE,diff);
-  glLightfv(GL_LIGHT0,GL_SPECULAR,zeros);
-  glLightfv(GL_LIGHT0,GL_POSITION,pos);
-  pos[0] *= -1;
-  pos[1] *= -1;
-  pos[2] *= -1;
-  glLightfv(GL_LIGHT1,GL_AMBIENT,amb);
-  glLightfv(GL_LIGHT1,GL_DIFFUSE,diff);
-  glLightfv(GL_LIGHT1,GL_SPECULAR,zeros);
-  glLightfv(GL_LIGHT1,GL_POSITION,pos);
-}
-
-//const float back[4] = {30.0/255.0,30.0/255.0,50.0/255.0,0};
-const float back[4] = {255.0/255.0,255.0/255.0,255.0/255.0,0};
-void display()
-{
-  using namespace Eigen;
-  using namespace igl;
-  using namespace std;
-
-  // Update
-  update_arap();
-
-  glClearColor(back[0],back[1],back[2],0);
-  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
-  if(is_animating)
-  {
-    double t = (get_seconds() - animation_start_time)/ANIMATION_DURATION;
-    if(t > 1)
-    {
-      t = 1;
-      is_animating = false;
-    }
-    const Quaterniond q = animation_from_quat.slerp(t,animation_to_quat).normalized();
-    s.camera.orbit(q.conjugate());
-  }
-
-  glDisable(GL_LIGHTING);
-  lights();
-  push_scene();
-  glEnable(GL_DEPTH_TEST);
-  glDepthFunc(GL_LESS);
-  glEnable(GL_NORMALIZE);
-  push_object();
-
-  // Draw the model
-  // Set material properties
-  //glDisable(GL_COLOR_MATERIAL);
-  //glMaterialfv(GL_FRONT, GL_AMBIENT,  GOLD_AMBIENT);
-  //glMaterialfv(GL_FRONT, GL_DIFFUSE,  GOLD_DIFFUSE  );
-  //glMaterialfv(GL_FRONT, GL_SPECULAR, GOLD_SPECULAR);
-  //glMaterialf (GL_FRONT, GL_SHININESS, 128);
-  //glMaterialfv(GL_BACK, GL_AMBIENT,  SILVER_AMBIENT);
-  //glMaterialfv(GL_BACK, GL_DIFFUSE,  FAST_GREEN_DIFFUSE  );
-  //glMaterialfv(GL_BACK, GL_SPECULAR, SILVER_SPECULAR);
-  //glMaterialf (GL_BACK, GL_SHININESS, 128);
-  glEnable(GL_COLOR_MATERIAL);
-
-  igl::opengl2::draw_mesh(U,F,N,C);
-  glDisable(GL_COLOR_MATERIAL);
-
-  pop_object();
-
-
-  // Draw a nice floor
-  glPushMatrix();
-  const double floor_offset =
-    -2./bbd*(V.col(1).maxCoeff()-mid(1));
-  glTranslated(0,floor_offset,0);
-  //const float GREY[4] = {0.5,0.5,0.6,1.0};
-  //const float DARK_GREY[4] = {0.2,0.2,0.3,1.0};
-
-  //draw_floor(GREY,DARK_GREY);
-  igl::opengl2::draw_floor();
-  glPopMatrix();
-
-  pop_scene();
-
-  igl::opengl::report_gl_error();
-
-  TwDraw();
-  glutSwapBuffers();
-  //if(is_animating)
-  //{
-    glutPostRedisplay();
-  //}
-}
-
-void mouse_wheel(int wheel, int direction, int mouse_x, int mouse_y)
-{
-  using namespace std;
-  using namespace igl;
-  using namespace Eigen;
-  GLint viewport[4];
-  glGetIntegerv(GL_VIEWPORT,viewport);
-  if(wheel == 0 && TwMouseMotion(mouse_x, viewport[3] - mouse_y))
-  {
-    static double mouse_scroll_y = 0;
-    const double delta_y = 0.125*direction;
-    mouse_scroll_y += delta_y;
-    TwMouseWheel(mouse_scroll_y);
-    return;
-  }
-  push_undo();
-  auto & camera = s.camera;
-  if(wheel==0)
-  {
-    // factor of zoom change
-    double s = (1.-0.01*direction);
-    //// FOV zoom: just widen angle. This is hardly ever appropriate.
-    //camera.m_angle *= s;
-    //camera.m_angle = min(max(camera.m_angle,1),89);
-    camera.push_away(s);
-  }else
-  {
-    // Dolly zoom:
-    camera.dolly_zoom((double)direction*1.0);
-  }
-}
-
-void mouse(int glutButton, int glutState, int mouse_x, int mouse_y)
-{
-  using namespace std;
-  using namespace Eigen;
-  using namespace igl;
-  bool tw_using = TwEventMouseButtonGLUT(glutButton,glutState,mouse_x,mouse_y);
-  switch(glutButton)
-  {
-    case GLUT_RIGHT_BUTTON:
-    case GLUT_LEFT_BUTTON:
-    {
-      switch(glutState)
-      {
-        case 1:
-          // up
-          glutSetCursor(GLUT_CURSOR_LEFT_ARROW);
-          is_rotating = false;
-          break;
-        case 0:
-          // down
-          if(!tw_using)
-          {
-            glutSetCursor(GLUT_CURSOR_CYCLE);
-            // collect information for trackball
-            is_rotating = true;
-            down_camera = s.camera;
-            down_x = mouse_x;
-            down_y = mouse_y;
-          }
-          break;
-      }
-      break;
-    }
-    // Scroll down
-    case 3:
-    {
-      mouse_wheel(0,-1,mouse_x,mouse_y);
-      break;
-    }
-    // Scroll up
-    case 4:
-    {
-      mouse_wheel(0,1,mouse_x,mouse_y);
-      break;
-    }
-    // Scroll left
-    case 5:
-    {
-      mouse_wheel(1,-1,mouse_x,mouse_y);
-      break;
-    }
-    // Scroll right
-    case 6:
-    {
-      mouse_wheel(1,1,mouse_x,mouse_y);
-      break;
-    }
-  }
-  glutPostRedisplay();
-}
-
-void mouse_drag(int mouse_x, int mouse_y)
-{
-  using namespace igl;
-  using namespace Eigen;
-
-  if(is_rotating)
-  {
-    glutSetCursor(GLUT_CURSOR_CYCLE);
-    Quaterniond q;
-    auto & camera = s.camera;
-    switch(rotation_type)
-    {
-      case ROTATION_TYPE_IGL_TRACKBALL:
-      {
-        // Rotate according to trackball
-        igl::trackball<double>(
-          width,
-          height,
-          2.0,
-          down_camera.m_rotation_conj.coeffs().data(),
-          down_x,
-          down_y,
-          mouse_x,
-          mouse_y,
-          q.coeffs().data());
-          break;
-      }
-      case ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP:
-      {
-        // Rotate according to two axis valuator with fixed up vector
-        two_axis_valuator_fixed_up(
-          width, height,
-          2.0,
-          down_camera.m_rotation_conj,
-          down_x, down_y, mouse_x, mouse_y,
-          q);
-        break;
-      }
-      default:
-        break;
-    }
-    camera.orbit(q.conjugate());
-  }else
-  {
-    TwEventMouseMotionGLUT(mouse_x, mouse_y);
-  }
-  glutPostRedisplay();
-}
-
-void key(unsigned char key, int mouse_x, int mouse_y)
-{
-  using namespace std;
-  using namespace igl;
-  switch(key)
-  {
-    // ESC
-    case char(27):
-      rebar.save(REBAR_NAME);
-    // ^C
-    case char(3):
-      exit(0);
-    case ' ':
-      {
-        static double pause_start,pause_stop;
-        paused = !paused;
-        if(paused)
-        {
-          pause_start = get_seconds();
-        }else
-        {
-          pause_stop = get_seconds();
-          pause_time += (pause_stop-pause_start);
-        }
-        break;
-      }
-    default:
-      if(!TwEventKeyboardGLUT(key,mouse_x,mouse_y))
-      {
-        cout<<"Unknown key command: "<<key<<" "<<int(key)<<endl;
-      }
-  }
-
-  glutPostRedisplay();
-}
-
-int main(int argc, char * argv[])
-{
-  using namespace Eigen;
-  using namespace igl;
-  using namespace std;
-
-  // init mesh
-  string filename = "../shared/decimated-knight.obj";
-  string sfilename = "../shared/decimated-knight-selection.dmat";
-  //string filename = "../shared/decimated-knight.mesh";
-  //string sfilename = "../shared/decimated-knight-1-selection.dmat";
-  if(argc < 3)
-  {
-    cerr<<"Usage:"<<endl<<"    ./example input.obj selection.dmat"<<endl;
-    cout<<endl<<"Opening default mesh..."<<endl;
-  }else
-  {
-    // Read and prepare mesh
-    filename = argv[1];
-    sfilename = argv[2];
-  }
-  string d,b,ext,f;
-  pathinfo(filename,d,b,ext,f);
-  // Convert extension to lower case
-  transform(ext.begin(), ext.end(), ext.begin(), ::tolower);
-
-  vector<vector<double > > vV,vN,vTC;
-  vector<vector<int > > vF,vTF,vFN;
-  // Convert extension to lower case
-  if(ext == "obj")
-  {
-    if(!igl::readOBJ(filename,vV,vTC,vN,vF,vTF,vFN))
-    {
-      return 1;
-    }
-  }else if(ext == "mesh")
-  {
-    if(!igl::readMESH(filename,V,T,F))
-    {
-      return 1;
-    }
-  }else
-  {
-    return 1;
-  }
-  if(vV.size() > 0)
-  {
-    if(!list_to_matrix(vV,V))
-    {
-      cerr<<"Bad V"<<endl;
-      return 1;
-    }
-    polygon_mesh_to_triangle_mesh(vF,F);
-  }
-  per_face_normals(V,F,N);
-
-  if(!readDMAT(sfilename,S))
-  {
-    return 1;
-  }
-
-  // Compute normals, centroid, colors, bounding box diagonal
-  mid = 0.5*(V.colwise().maxCoeff() + V.colwise().minCoeff());
-  bbd = (V.colwise().maxCoeff() - V.colwise().minCoeff()).maxCoeff();
-
-  // Init glut
-  glutInit(&argc,argv);
-
-  if( !TwInit(TW_OPENGL, NULL) )
-  {
-    // A fatal error occured
-    fprintf(stderr, "AntTweakBar initialization failed: %s\n", TwGetLastError());
-    return 1;
-  }
-  // Create a tweak bar
-  rebar.TwNewBar("TweakBar");
-  rebar.TwAddVarRW("camera_rotation", TW_TYPE_QUAT4D,
-    s.camera.m_rotation_conj.coeffs().data(), "open readonly=true");
-  s.camera.push_away(3);
-  s.camera.dolly_zoom(25-s.camera.m_angle);
-  TwType RotationTypeTW = igl::anttweakbar::ReTwDefineEnumFromString(
-     "RotationType",
-    "igl_trackball,two-a...-fixed-up");
-  rebar.TwAddVarCB( "rotation_type", RotationTypeTW,
-    set_rotation_type,get_rotation_type,NULL,"keyIncr=] keyDecr=[");
-  rebar.load(REBAR_NAME);
-
-  glutInitDisplayString( "rgba depth double samples>=8 ");
-  glutInitWindowSize(glutGet(GLUT_SCREEN_WIDTH)/2.0,glutGet(GLUT_SCREEN_HEIGHT));
-  glutCreateWindow("colored-mesh");
-  glutDisplayFunc(display);
-  glutReshapeFunc(reshape);
-  glutKeyboardFunc(key);
-  glutMouseFunc(mouse);
-  glutMotionFunc(mouse_drag);
-  glutPassiveMotionFunc(
-    [](int x, int y)
-    {
-      TwEventMouseMotionGLUT(x,y);
-      glutPostRedisplay();
-    });
-  static std::function<void(int)> timer_bounce;
-  auto timer = [] (int ms) {
-    timer_bounce(ms);
-  };
-  timer_bounce = [&] (int ms) {
-    glutTimerFunc(ms, timer, ms);
-    glutPostRedisplay();
-  };
-  glutTimerFunc(500, timer, 500);
-
-  if(!init_arap())
-  {
-    cerr<<"Initializing arap failed."<<endl;
-    return 1;
-  }
-
-  glutMainLoop();
-  return 0;
-}

examples/bbw/Makefile

@@ -1,47 +0,0 @@
-include ../Makefile.conf
-
-CXX=g++
-
-LIBIGL_LIB+=-liglmosek -liglbbw -ligltetgen
-
-ifdef IGL_NO_MOSEK
-CFLAGS+=-DIGL_NO_MOSEK
-else
-# Adjust your mosek paths etc. accordingly
-ifndef MOSEKPLATFORM
-  MOSEKPLATFORM=osx64x86
-endif
-ifndef MOSEKVERSION
-  MOSEKVERSION=6
-endif
-MOSEK=/usr/local/mosek
-MOSEK_INC=-I$(MOSEK)/$(MOSEKVERSION)/tools/platform/$(MOSEKPLATFORM)/h
-MOSEK_LIB=-L$(MOSEK)/$(MOSEKVERSION)/tools/platform/$(MOSEKPLATFORM)/bin -lmosek64
-INC+=$(MOSEK_INC)
-endif
-
-INC=-I. ${EIGEN3_INC} ${LIBIGL_INC} ${TETGEN_INC} ${MOSEK_INC} 
-LIB=${TETGEN_LIB} ${MOSEK_LIB} ${OPENGL_LIB} ${GLUT_LIB} ${LIBIGL_LIB} 
-
-# Make file for bbw_demo
-.PHONY: all
-all: bbw_demo
-
-CPP_FILES=$(wildcard ./*.cpp)
-OBJ_FILES=$(addprefix obj/,$(notdir $(CPP_FILES:.cpp=.o))) 
-
-bbw_demo: obj $(OBJ_FILES)
-	$(CXX) -o bbw_demo $(CFLAGS) $(AFLAGS) $(OPENMP) $(OBJ_FILES) $(LIB)
-
-obj:
-	mkdir -p obj
-
-obj/%.o: %.cpp %.h
-	$(CXX) $(CFLAGS) $(AFLAGS) $(OPENMP) -o $@ -c $< $(INC)
-obj/%.o: %.cpp
-	$(CXX) $(CFLAGS) $(AFLAGS) $(OPENMP) -o $@ -c $< $(INC)
-
-.PHONY: clean
-clean:
-	rm -f $(OBJ_FILES)
-	rm -f bbw_demo

examples/bbw/README

@@ -1,112 +0,0 @@
-This is a small program that illustrates how to compute Bounded Biharmonic
-Weights (BBW) for a given surface mesh and skeleton description. This only
-supports point handles and skeleton trees (bones). Cages are not supported.
-This program only computes and outputs the weight function values. You should
-be able to load them into matlab or maya or whatever.
-
-This demo (main.cpp) is really just a skeleton of function calls that load the
-input and writes the output. The real "meat" of the bbw demo is conducted in
-the bbw function of libigl. If you only want to look at that implementation,
-then download libigl and jump to libigl/include/igl/mosek/bbw.h and
-libigl/include/igl/mosek/bbw.cpp
-
-= Dependencies =
-
-The dependencies are:
-  libigl
-    eigen3
-    tetgen
-    mosek
-    libigl_tetgen
-    libigl_mosek
-
-  = libigl =
-  libigl is our groups internal library. The library functions as an inlined
-  header library and simultaneously a static library.
-  http://igl.ethz.ch/projects/libigl/
-
-  This demo depends on the libigl_tetgen and libigl_mosek extras that come with
-  libigl. You will have to edit your libigl Makefile.conf accordingly: set
-  IGL_WITH_TETGEN=1 and IGL_WITH_MOSEK=1 and then build the main libigl library
-  and the extras with:
-  
-  make lib
-  make extras
-  
-    = Eigen3 =
-    The libigl dependencies rely on a depracted version of the Sparse Matrix
-    suite in eigen 3. Thus you need the correct version of eigen. It's not
-    clear how much longer this will work with the current version of Eigen.
-  
-    = Mosek =
-    Mosek is free for academics and has its own installation instructions.
-    Adjust the makefile accordingly.
-  
-    = Tetgen =
-    Tetgen is also free and easy to install. Be sure to compile the library
-    version, i.e.: 
-      make tetlib
-  
-    To make life a little easier, libigl include a working version of tetgen in
-    libigl/external/tetgen/. You can go there and compile libtet.a or download
-    the tetgen source and do that on your own. Whatever.
-
-= COMPILE =
-
-First install the dependencies (eigen, tetgen, mosek, libigl).  If your on a
-mac, and why wouldn't you be, then you *should* with any luck and by the grace
-of God be able to compile with:
-
-  make
-
-= RUN =
-
-Then run an example with:
-
-  ./bbw_demo examples/brick.obj examples/brick.tgf
-
-This will produce at least 2 files:
-
-  examples/brick-volume.mesh  Tetrahedral mesh over which weights were computed
-  examples/brick-volume.dmat  Coefficients of weights defined over .mesh
-
-= File Formats =
-
-See libigl/file-formats/index.html
-
-= Zip =
-Package up this demo using:
-
-zip -9 -r -x=*/.hg/* -x=*un~  bbw_demo_3d.zip ../bbw
-
-= Contact =
-
-You can try to email Alec Jacobson (alecjacobson@gmail.com) with questions.
-Especially regarding the algorithm described in "Bounded biharmonic weights for
-real-time deformation" by [Jacobson et al. 2011].  However, please
-please
-please
-please
-please
-please
-please
-please
-please
-please
-please
-please
-please
-please
-please
-please
-please
-please
-try to solve compilation troubles on your own. I didn't intend for this code to
-be machine independent or even necessarily easy to compile. This is a quick and
-dirty demo because so many people requested it.
-
-Sometime in the not too distant future I still plan to release a *nice* 3d, C++
-demo. 
-
-Love,
-Alec

examples/bbw/example.cpp

@@ -1,272 +0,0 @@
-
-#include <igl/pathinfo.h>
-#include <igl/readOBJ.h>
-#include <igl/readOFF.h>
-#include <igl/readMESH.h>
-#include <igl/faces_first.h>
-#include <igl/readTGF.h>
-#include <igl/launch_medit.h>
-#include <igl/boundary_conditions.h>
-#include <igl/writeDMAT.h>
-#include <igl/writeMESH.h>
-#include <igl/normalize_row_sums.h>
-#include <igl/bbw/bbw.h>
-#include <igl/tetgen/mesh_with_skeleton.h>
-
-#include <Eigen/Dense>
-
-#include <iostream>
-#include <string>
-
-// Whether medit program is install
-//#define WITH_MEDIT
-
-const char * USAGE=
-"Usage:\n"
-"  ./bbw_demo shape{.obj|.off|.mesh} skeleton{.tgf|.bf}\n"
-;
-
-// Read a surface mesh from a {.obj|.off|.mesh} files
-// Inputs:
-//   mesh_filename  path to {.obj|.off|.mesh} file
-// Outputs:
-//   V  #V by 3 list of mesh vertex positions
-//   F  #F by 3 list of triangle indices
-// Returns true only if successfuly able to read file
-bool load_mesh_from_file(
-  const std::string mesh_filename,
-  Eigen::MatrixXd & V,
-  Eigen::MatrixXi & F)
-{
-  using namespace std;
-  using namespace igl;
-  using namespace Eigen;
-  string dirname, basename, extension, filename;
-  pathinfo(mesh_filename,dirname,basename,extension,filename);
-  transform(extension.begin(), extension.end(), extension.begin(), ::tolower);
-  bool success = false;
-  if(extension == "obj")
-  {
-    success = readOBJ(mesh_filename,V,F);
-  }else if(extension == "off")
-  {
-    success = readOFF(mesh_filename,V,F);
-  }else if(extension == "mesh")
-  {
-    // Unused Tets read from .mesh file
-    MatrixXi Tets;
-    success = readMESH(mesh_filename,V,Tets,F);
-    // We're not going to use any input tets. Only the surface
-    if(Tets.size() > 0 && F.size() == 0)
-    {
-      // If Tets read, but no faces then use surface of tet volume
-    }else
-    {
-      // Rearrange vertices so that faces come first
-      VectorXi IM;
-      faces_first(V,F,IM);
-      // Dont' bother reordering Tets, but this is how one would:
-      //Tets = 
-      //  Tets.unaryExpr(bind1st(mem_fun( static_cast<VectorXi::Scalar&
-      //  (VectorXi::*)(VectorXi::Index)>(&VectorXi::operator())),
-      //  &IM)).eval();
-      // Don't throw away any interior vertices, since user may want weights
-      // there
-    }
-  }else
-  {
-    cerr<<"Error: Unknown shape file format extension: ."<<extension<<endl;
-    return false;
-  }
-  return success;
-}
-
-// Load a skeleton (bones, points and cage edges) from a {.bf|.tgf} file
-//
-// Inputs:
-//   skel_filename  path to skeleton {.bf|.tgf} file
-// Outputs:
-//  C  # vertices by 3 list of vertex positions
-//  P  # point-handles list of point handle indices
-//  BE # bone-edges by 2 list of bone-edge indices
-//  CE # cage-edges by 2 list of cage-edge indices
-bool load_skeleton_from_file(
-  const std::string skel_filename,
-  Eigen::MatrixXd & C,
-  Eigen::VectorXi & P,
-  Eigen::MatrixXi & BE,
-  Eigen::MatrixXi & CE)
-{
-  using namespace std;
-  using namespace igl;
-  using namespace Eigen;
-  string dirname, basename, extension, filename;
-  pathinfo(skel_filename,dirname,basename,extension,filename);
-  transform(extension.begin(), extension.end(), extension.begin(), ::tolower);
-  bool success = false;
-  if(extension == "tgf")
-  {
-    // Phony space for unused all edges and pseudo edges
-    MatrixXi E;
-    MatrixXi PE;
-    success = readTGF(skel_filename,C,E,P,BE,CE,PE);
-  }else
-  {
-    cerr<<"Error: Unknown skeleton file format extension: ."<<extension<<endl;
-    return false;
-  }
-  return success;
-}
-
-// Writes output files to /path/to/input/mesh-skeleton.dmat,
-// mesh-volume.dmat, mesh-volume.mesh if input mesh was
-// located at /path/to/input/mesh.obj and input skeleton was at
-// /other/path/to/input/skel.tgf
-// 
-// Writes:
-////   mesh.dmat  dense weights matrix corresponding to original input
-////     vertices V
-//   mesh-volume.dmat  dense weights matrix corresponding to all
-//     vertices in tet mesh used for computation VV
-//   mesh-volume.mesh  Tet mesh used for computation
-//
-// Inputs:
-//   mesh_filename  path to {.obj|.off|.mesh} file
-//   skel_filename  path to skeleton {.bf|.tgf} file
-//   V  #V by 3 list of original mesh vertex positions
-//   F  #F by 3 list of original triangle indices
-//   VV  #VV by 3 list of tet-mesh vertex positions
-//   TT  #TT by 4 list of tetrahedra indices
-//   FF  #FF by 3 list of surface triangle indices
-//   W   #VV by #W weights matrix
-// Returns true on success
-bool save_output(
-  const std::string mesh_filename,
-  const std::string /*skel_filename*/,
-  const Eigen::MatrixXd & V,
-  const Eigen::MatrixXi & /*F*/,
-  const Eigen::MatrixXd & VV,
-  const Eigen::MatrixXi & TT,
-  const Eigen::MatrixXi & FF,
-  const Eigen::MatrixXd & W)
-{
-  using namespace std;
-  using namespace igl;
-  using namespace Eigen;
-  // build filename prefix out of input base names
-  string prefix = "";
-  {
-    string dirname, basename, extension, filename;
-    pathinfo(mesh_filename,dirname,basename,extension,filename);
-    transform(extension.begin(), extension.end(), extension.begin(), ::tolower);
-    prefix += dirname + "/" + filename;
-  }
-
-  //{
-  //  string dirname, basename, extension, filename;
-  //  pathinfo(skel_filename,dirname,basename,extension,filename);
-  //  transform(extension.begin(), extension.end(), extension.begin(), ::tolower);
-  //  prefix += "-" + filename;
-  //}
-
-  // Keep track if any fail
-  bool success = true;
-  //// Weights matrix for just V. Assumes V prefaces VV
-  //MatrixXd WV = W.block(0,0,V.rows(),W.cols());
-  //// write dmat
-  //success &= writeDMAT(prefix + ".dmat",WV);
-  // write volume weights dmat
-  success &= writeDMAT(prefix + "-volume.dmat",W);
-  // write volume mesh
-  success &= writeMESH(prefix + "-volume.mesh",VV,TT,FF);
-  //// write surface OBJ with pseudocolor
-  return success;
-}
-
-int main(int argc, char * argv[])
-{
-  using namespace std;
-  using namespace Eigen;
-  using namespace igl;
-  string mesh_filename = "examples/brick.obj";
-  string skeleton_filename = "examples/brick.tgf";
-  if(argc<3)
-  {
-    cerr<<USAGE<<endl;
-    cout<<endl<<"Using defaults..."<<endl;
-  }else
-  {
-    mesh_filename = argv[1];
-    skeleton_filename = argv[2];
-  }
-
-  // #V by 3 list of mesh vertex positions
-  MatrixXd V;
-  // #F by 3 list of triangle indices
-  MatrixXi F;
-  // load mesh from .obj, .off or .mesh
-  if(!load_mesh_from_file(mesh_filename,V,F))
-  {
-    return 1;
-  }
-  // "Skeleton" (handles) descriptors:
-  // List of control and joint (bone endpoint) positions
-  MatrixXd C;
-  // List of point handles indexing C
-  VectorXi P;
-  // List of bone edges indexing C
-  MatrixXi BE;
-  // List of cage edges indexing *P*
-  MatrixXi CE;
-  // load skeleton (.tgf or .bf)
-  if(!load_skeleton_from_file(skeleton_filename,C,P,BE,CE))
-  {
-    return 1;
-  }
-
-  // Mesh with samples on skeleton
-  // New vertices of tet mesh, V prefaces VV
-  MatrixXd VV;
-  // Tetrahedra
-  MatrixXi TT;
-  // New surface faces FF
-  MatrixXi FF;
-  if(!igl::tetgen::mesh_with_skeleton(V,F,C,P,BE,CE,10,VV,TT,FF))
-  {
-    return 1;
-  }
-#ifdef WITH_MEDIT
-  // If you have medit installed then it's convenient to visualize the tet mesh
-  // at this point
-  launch_medit(VV,TT,FF,false);
-#endif
-  // Compute boundary conditions (aka fixed value constraints)
-  // List of boundary indices (aka fixed value indices into VV)
-  VectorXi b;
-  // List of boundary conditions of each weight function
-  MatrixXd bc;
-  if(!boundary_conditions(VV,TT,C,P,BE,CE,b,bc))
-  {
-    return 1;
-  }
-
-  cout<<"b=["<<b<<"];"<<endl;
-  cout<<"bc=["<<bc<<"];"<<endl;
-
-  // compute BBW 
-  // Default bbw data and flags
-  igl::bbw::BBWData bbw_data;
-  bbw_data.qp_solver = igl::bbw::QP_SOLVER_IGL_ACTIVE_SET;
-  //bbw_data.qp_solver = igl::bbw::QP_SOLVER_MOSEK;
-  // Weights matrix
-  MatrixXd W;
-  if(!igl::bbw::bbw(VV,TT,b,bc,bbw_data,W))
-  {
-    return 1;
-  }
-  // Normalize weights to sum to one
-  normalize_row_sums(W,W);
-  // Save output
-  save_output(mesh_filename,skeleton_filename,V,F,VV,TT,FF,W);
-  return 0;
-}

examples/bbw/examples/armadillo.bf

@@ -1,19 +0,0 @@
-0 -1 0.129257 0.422406 0.196763 1 0 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 
-1 -1 -0.152254 0.423852 0.169958 1 0 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 
--1 -1 -0.0109722 0.173294 -0.0092734 1 0 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 
--1 -1 -0.00468155 -0.13266 -0.125831 1 0 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 
-2 2 -0.0026014 0.097823 0.152078 1 0 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 
-3 2 -0.153069 -0.030196 0.021722 1 0 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 
-4 2 0.180203 -0.027431 0.0197277 1 0 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 
-5 3 -0.0956565 -0.008814 -0.004997 1 0 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 
-6 3 0.102697 0.001587 0.002381 1 0 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 
-13 5 -0.145449 0.018419 0.0492195 1 0 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 
-15 6 0.132523 0.037847 0.109096 1 0 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 
-7 7 -0.092032 -0.170904 0.0771798 1 0 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 
-10 8 0.119696 -0.165775 0.0816835 1 0 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 
-14 9 -0.071846 0.102468 0.0987159 1 0 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 
-16 10 0.055387 0.053723 0.10658 1 0 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 
-8 11 0.050883 -0.223767 -0.103315 1 0 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 
-11 12 -0.025665 -0.231096 -0.0767775 1 0 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 
-9 15 -0.070583 0.002246 0.0876127 1 0 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 
-12 16 0.079788 -0.001878 0.0786744 1 0 0 0 0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 1 0 

examples/bbw/examples/armadillo.obj.REMOVED.git-id

@@ -1 +0,0 @@
-fbec5d216516015b925b9fd2cb46a8ca91b45995

examples/bbw/examples/armadillo.tgf

@@ -1,36 +0,0 @@
-   1 -0.0109722   0.173294 -0.0092734          0          0          0 6.9532605e-310 2.3525269e-314 3.1373169e-321 2.1368449e-314 2.1219958e-314 6.953223e-310          1 2.1368449e-314 7.9050503e-323 2.1447907e-314          0    1 
-   2 -0.00468155   -0.13266  -0.125831          0          0          0 6.9532605e-310 2.3525269e-314 3.1373169e-321 2.1368449e-314 2.1219958e-314 6.953223e-310          1 2.1368449e-314 7.9050503e-323 2.1447907e-314          0    3 
-   3 -0.0135736   0.271117   0.142805          0          0          0 6.9532605e-310 2.3525269e-314 3.1373169e-321 2.1368449e-314 2.1219958e-314 6.953223e-310          1 2.1368449e-314 7.9050503e-323 2.1447907e-314          0    4 
-   4  -0.100338  -0.141474  -0.130828          0          0          0 6.9532605e-310 2.3525269e-314 3.1373169e-321 2.1368449e-314 2.1219958e-314 6.953223e-310          1 2.1368449e-314 7.9050503e-323 2.1447907e-314          0    5 
-   5   -0.19237  -0.312378 -0.0536482          0          0          0 6.9532605e-310 2.3525269e-314 3.1373169e-321 2.1368449e-314 2.1219958e-314 6.953223e-310          1 2.1368449e-314 7.9050503e-323 2.1447907e-314          0    6 
-   6  -0.141487  -0.536145  -0.156963          0          0          0 6.9532605e-310 2.3525269e-314 3.1373169e-321 2.1368449e-314 2.1219958e-314 6.953223e-310          1 2.1368449e-314 7.9050503e-323 2.1447907e-314          0    7 
-   7   -0.21207  -0.533899 -0.0693503          0          0          0 6.9532605e-310 2.3525269e-314 3.1373169e-321 2.1368449e-314 2.1219958e-314 6.953223e-310          1 2.1368449e-314 7.9050503e-323 2.1447907e-314          0    8 
-   8  0.0980157  -0.131073   -0.12345          0          0          0 6.9532605e-310 2.3525269e-314 3.1373169e-321 2.1368449e-314 2.1219958e-314 6.953223e-310          1 2.1368449e-314 7.9050503e-323 2.1447907e-314          0    9 
-   9   0.217712  -0.296848 -0.0417665          0          0          0 6.9532605e-310 2.3525269e-314 3.1373169e-321 2.1368449e-314 2.1219958e-314 6.953223e-310          1 2.1368449e-314 7.9050503e-323 2.1447907e-314          0   10 
-  10   0.192047  -0.527944  -0.118544          0          0          0 6.9532605e-310 2.3525269e-314 3.1373169e-321 2.1368449e-314 2.1219958e-314 6.953223e-310          1 2.1368449e-314 7.9050503e-323 2.1447907e-314          0   11 
-  11   0.271835  -0.529822 -0.0398696          0          0          0 6.9532605e-310 2.3525269e-314 3.1373169e-321 2.1368449e-314 2.1219958e-314 6.953223e-310          1 2.1368449e-314 7.9050503e-323 2.1447907e-314          0   12 
-  12  -0.164041   0.143098  0.0124486          0          0          0 6.9532605e-310 2.3525269e-314 3.1373169e-321 2.1368449e-314 2.1219958e-314 6.953223e-310          1 2.1368449e-314 7.9050503e-323 2.1447907e-314          0   13 
-  13   -0.30949   0.161517  0.0616681          0          0          0 6.9532605e-310 2.3525269e-314 3.1373169e-321 2.1368449e-314 2.1219958e-314 6.953223e-310          1 2.1368449e-314 7.9050503e-323 2.1447907e-314          0   14 
-  14  -0.381336   0.263985   0.160384          0          0          0 6.9532605e-310 2.3525269e-314 3.1373169e-321 2.1368449e-314 2.1219958e-314 6.953223e-310          1 2.1368449e-314 7.9050503e-323 2.1447907e-314          0   15 
-  15   0.169231   0.145863  0.0104543          0          0          0 6.9532605e-310 2.3525269e-314 3.1373169e-321 2.1368449e-314 2.1219958e-314 6.953223e-310          1 2.1368449e-314 7.9050503e-323 2.1447907e-314          0   16 
-  16   0.301754    0.18371    0.11955          0          0          0 6.9532605e-310 2.3525269e-314 3.1373169e-321 2.1368449e-314 2.1219958e-314 6.953223e-310          1 2.1368449e-314 7.9050503e-323 2.1447907e-314          0   17 
-  17   0.357141   0.237433    0.22613          0          0          0 6.9532605e-310 2.3525269e-314 3.1373169e-321 2.1368449e-314 2.1219958e-314 6.953223e-310          1 2.1368449e-314 7.9050503e-323 2.1447907e-314          0   18 
-  18   0.129257   0.422406   0.196763          0 1.7604077e-310          0          1          1          1          0          0          0          1   1.078406    1.05751     1.1997          0   36 
-  19  -0.152254   0.423852   0.169958 2.1219958e-314 5.7559406e-09 3.9642947e-07          1          1          1          0          0          0          1   0.881232   1.047886   1.174727          0   37 
-#
-  15   16 1 0 0 0 34
-   8    9 1 0 0 0 29
-   2    8 1 0 0 0 25
-   2    4 1 0 0 0 24
-  13   14 1 0 0 0 33
-   6    7 1 0 0 0 28
-  16   17 1 0 0 0 35
-   4    5 1 0 0 0 26
-   9   10 1 0 0 0 30
-   5    6 1 0 0 0 27
-   1    3 1 0 0 0 19
-   1   15 1 0 0 0 20
-   1   12 1 0 0 0 22
-  10   11 1 0 0 0 31
-  12   13 1 0 0 0 32
-#

examples/bbw/examples/brick.obj.REMOVED.git-id

@@ -1 +0,0 @@
-34a3aac9ef5d09124a85c97d0f135e3c24f32e85

examples/bbw/examples/brick.tgf

@@ -1,4 +0,0 @@
-   1          4        0.5        0.5 6.9532423e-310 6.9532423e-310 6.9532423e-310          1          1          1          0          0          0          1      4.125     1.1875        1.5          0    1 
-   2          0        0.5        0.5 9.8813129e-324          0 2.1219958e-314          1          1          1          0          0          0          1 0.040798319 0.48263485  3.1593933          0    3 
-#
-#

examples/bbw/examples/gargoyle-skeleton-4-points.tgf

@@ -1,13 +0,0 @@
-1 0.281152 0.703812 0.17955 0.281152 0.703812 0.17955 1 1 1 0 0 0 1 0 0 0 
-2 0.279014 0.78407 0.281131 0.279014 0.78407 0.281131 1 1 1 0 0 0 1 0 0 0 
-3 0.283274 0.798735 0.427544 0.283274 0.798735 0.427544 1 1 1 0 0 0 1 0 0 0 
-4 0.289027 0.352549 0.175056 0.289027 0.352549 0.175056 1 1 1 0 0 0 1 0 0 0 
-5 0.533399 0.97653 0.053801 0.533399 0.97653 0.053801 1 1 1 0 0 0 1 0 0 0 
-6 0.0164236 0.986867 0.0583015 0.0164236 0.986867 0.0583015 1 1 1 0 0 0 1 0 0 0 
-7 0.371475 0.764257 0.180104 1.02184e-193 1.2683e-314 -9.18791e-189 1 1 1 0 0 0 1 0.998461 0.98759 1.1801 
-8 0.205292 0.774223 0.177497 2.5518e-300 1.2683e-314 -9.18791e-189 1 1 1 0 0 0 1 1.02601 0.988331 1.1775 
-#
-1 4 1 1 0
-1 2 1 1 0
-2 3 1 1 0
-#

examples/bbw/examples/gargoyle.obj.REMOVED.git-id

@@ -1 +0,0 @@
-67232d7546e073aef29d1008e4d71bac5d3801d0

examples/bbw/examples/toy.tgf

@@ -1,8 +0,0 @@
-   1 0.022050698  0.2184666 0.048204916          0          1          0          1          1          1          0          0          0          1          1          1          1          0    1 
-   2 -0.00082061799 0.078092507 0.016942195          0       1440        874          1          1          1          0          0          0          1 0.99682216 0.89773834 0.97767308          0    2 
-   3 0.0026832858 -0.027061348 -0.0057913033          0          1          0          1          1          1          0          0          0          1   1.002247 0.89798112 0.97790599          0    4 
-   4 0.19749935 -0.54836793 -0.11514182          0 1.7604077e-310          0          1          1          1          0          0          0          1  1.1906136 0.18666707  1.0466804          0    6 
-#
-   1    2 1 1 0 0 3
-   2    3 1 1 0 0 5
-#

examples/beach-balls/BeachBall.cpp

@@ -1,236 +0,0 @@
-#include "BeachBall.h"
-
-
-#include <igl/opengl2/draw_beach_ball.h>
-#include <igl/quat_to_mat.h>
-#include <igl/opengl2/unproject_to_zero_plane.h>
-#include <igl/opengl2/unproject.h>
-#include <igl/opengl2/project.h>
-#include <igl/quat_mult.h>
-#include <igl/quat_conjugate.h>
-#include <igl/trackball.h>
-#include <igl/mat_to_quat.h>
-
-#include <OpenGL/GL.h>
-
-#include <iostream>
-#include <cmath>
-
-BeachBall::BeachBall():
-  radius(1),
-  is_hover(false),
-  is_down(false),
-  trackball_on(false),
-  down_x(-1),
-  down_y(-1)
-{
-  r[0]=r[1]=r[2]=0;r[3]=1;
-  t[0]=t[1]=t[2]=0;t[3]=0;
-}
-
-void BeachBall::pushmv() const
-{
-  glPushMatrix();
-  glLoadIdentity();
-  glMultMatrixd(mv);
-}
-void BeachBall::popmv() const
-{
-  glPopMatrix();
-}
-
-void BeachBall::push() const
-{
-  using namespace igl;
-  glPushMatrix();
-  // Translate to relative origin
-  glTranslated(t[0],t[1],t[2]);
-  // Rotate to relative orientation
-  double mat[4*4]; quat_to_mat(r,mat); glMultMatrixd(mat);
-}
-void BeachBall::pop() const
-{
-  glPopMatrix();
-}
-
-void BeachBall::draw()
-{
-  using namespace std;
-  using namespace igl;
-  // Keep track of relative identity (modelview) matrix at draw call
-  glGetDoublev(GL_MODELVIEW_MATRIX,mv);
-  push();
-  // Dim if hovered over
-  float ld[4];
-  glGetLightfv(GL_LIGHT0,GL_DIFFUSE,ld);
-  if(is_hover)
-  {
-    float ld_hover[4];
-    ld_hover[0] = 0.5*ld[0];
-    ld_hover[1] = 0.5*ld[1];
-    ld_hover[2] = 0.5*ld[2];
-    ld_hover[3] = 0.5*ld[3];
-    glLightfv(GL_LIGHT0,GL_DIFFUSE,ld_hover);
-  }
-  // Adjust scale only after setting origin
-  glPushMatrix();
-  glScaled(radius,radius,radius);
-  // draw oriented glyph 
-  igl::opengl2::draw_beach_ball();
-  // Pop scale
-  glPopMatrix();
-  // Reset lighting
-  glLightfv(GL_LIGHT0,GL_DIFFUSE,ld);
-  // Reset relative identity
-  pop();
-}
-
-bool BeachBall::in(const int x,const int y) const
-{
-  using namespace igl;
-  using namespace std;
-  pushmv();
-  push();
-  // Now origin is center of object
-  double obj[3];
-  // Check if igl::opengl2::unprojected screen point is nearby
-  igl::opengl2::unproject_to_zero_plane(x,y, &obj[0], &obj[1], &obj[2]);
-  bool near = (obj[0]*obj[0] + obj[1]*obj[1] + obj[2]*obj[2])<radius*radius;
-  pop();
-  popmv();
-  return near;
-}
-
-bool BeachBall::hover(const int x,const int y)
-{
-  return is_hover = in(x,y);
-}
-
-bool BeachBall::down(const int x,const int y)
-{
-  using namespace std;
-  using namespace igl;
-  is_down = in(x,y);
-  if(is_down)
-  {
-    copy(r,r+4,down_r);
-    copy(t,t+4,down_t);
-    down_x = x;
-    down_y = y;
-    trackball_on = true;
-  }
-  return is_down;
-}
-
-bool BeachBall::drag(const int x,const int y)
-{
-  using namespace igl;
-  using namespace std;
-  if(!is_down)
-  {
-    return false;
-  }
-  if(trackball_on)
-  {
-    // Pick up origin location
-    pushmv();
-    push();
-    double origin[3];
-    igl::opengl2::project(0,0,0,&origin[0],&origin[1],&origin[2]);
-    pop();
-    popmv();
-    double rot[4];
-    int VP[4];
-    glGetIntegerv(GL_VIEWPORT,VP);
-    trackball<double>(
-      VP[2],
-      VP[3],
-      2,
-            (down_x-origin[0]+VP[2]/2),
-      VP[3]-(down_y-origin[1]+VP[3]/2),
-            (     x-origin[0]+VP[2]/2),
-      VP[3]-(     y-origin[1]+VP[3]/2),
-      rot);
-    {
-      // We've computed change in rotation according to this view:
-      // R = mv * r, R' = rot * (mv * r)
-      // But we only want new value for r:
-      // R' = mv * r'
-      // mv * r' = rot * (mv * r)
-      // r' = mv* * rot * sr * r
-      // Convert modelview matrix to quaternion
-      double sr_conj[4],scene_rot[4],t1[4],t2[4];
-      mat4_to_quat(mv,scene_rot);
-      //cout<<"::sr: "<<
-      //  BeachBall::scene_rot[0]<<" "<<
-      //  BeachBall::scene_rot[1]<<" "<<
-      //  BeachBall::scene_rot[2]<<" "<<
-      //  BeachBall::scene_rot[3]<<" "<<
-      //  endl;
-      //cout<<"  sr: "<<
-      //  scene_rot[0]<<" "<<
-      //  scene_rot[1]<<" "<<
-      //  scene_rot[2]<<" "<<
-      //  scene_rot[3]<<" "<<
-      //  endl;
-      // Normalize to unit quaternion (rotation only)
-      double len = 
-        sqrt(scene_rot[0]*scene_rot[0]+
-        scene_rot[1]*scene_rot[1]+
-        scene_rot[2]*scene_rot[2]+
-        scene_rot[3]*scene_rot[3]);
-      for(int j = 0;j<4;j++)
-      {
-        scene_rot[j] /= len;
-      }
-      // TODO: Just use Eigen::Quaterniond
-      quat_conjugate(scene_rot,sr_conj);
-      quat_mult<double>(sr_conj,rot,t1);
-      quat_mult<double>(t1,scene_rot,t2);
-      quat_mult<double>(t2,down_r,r);
-
-    }
-  }else
-  {
-    // We want that origin follows mouse move. First define plane we
-    // igl::opengl2::projecteing screen mouse movement to as perpendicular plan passing
-    // through this origin.
-    pushmv();
-    // down_t igl::opengl2::projected to screen to get depth value
-    double p[3];
-    igl::opengl2::project(down_t[0],down_t[1],down_t[2],&p[0],&p[1],&p[2]);
-    // igl::opengl2::unprojected down_x,down_y with down_t depth
-    double du[3];
-    igl::opengl2::unproject(down_x,down_y,p[2],&du[0],&du[1],&du[2]);
-    // igl::opengl2::unprojected x,y with down_t depth
-    double u[3];
-    igl::opengl2::unproject(x,y,p[2],&u[0], &u[1], &u[2]);
-    popmv();
-    // Then move this origin according to igl::opengl2::project mouse displacment
-    t[0] = down_t[0] + (u[0]-du[0]);
-    t[1] = down_t[1] + (u[1]-du[1]);
-    t[2] = down_t[2] + (u[2]-du[2]);
-  }
-  return is_down;
-}
-
-bool BeachBall::right_down(const int x,const int y)
-{
-  using namespace std;
-  using namespace igl;
-  is_down = in(x,y);
-  if(is_down)
-  {
-    copy(r,r+4,down_r);
-    copy(t,t+4,down_t);
-    down_x = x;
-    down_y = y;
-  }
-  return is_down;
-}
-
-bool BeachBall::up(const int /*x*/,const int /*y*/)
-{
-  trackball_on = false;
-  return is_down = false;
-}

examples/beach-balls/BeachBall.h

@@ -1,61 +0,0 @@
-#ifndef BEACHBALL_H
-#define BEACHBALL_H
-class BeachBall
-{
-  public:
-    static double * scene_rot;
-  public:
-    // Rigid transformation: rotation as quaternion
-    double r[4];
-    // Rigid transformation: translation as quaternion
-    double t[4];
-    double radius;
-  protected:
-    bool is_hover;
-    bool is_down;
-    // trackball
-    bool trackball_on;
-    // Rigid transformation at down
-    double down_r[4];
-    double down_t[4];
-    // query position at down
-    int down_x;
-    int down_y;
-    // modelview matrix at draw 
-    double mv[16];
-  public:
-    BeachBall();
-    // Push the latest modelview matrix seen at draw time onto the stack
-    void pushmv() const;
-    // Pop the stack
-    void popmv() const;
-    // Push rigid transformation onto the stack
-    void push() const;
-    // Pop the stack
-    void pop() const;
-    // Draw and cache the modelview matrix
-    void draw();
-    // Return whether (x,y) in screenspace is "inside" (hitting)
-    bool in(const int x,const int y) const;
-    // Called on passive mouse move to (x,y)
-    //
-    // Return whether (x,y) is hovering over, set is_hover accordingly
-    bool hover(const int x,const int y);
-    // Called on mouse down at (x,y)
-    //
-    // Return whether (x,y) is down, set is_down accordingly
-    bool down(const int x,const int y);
-    // Called on mouse drag to (x,y)
-    //
-    // Returns whether still is_down
-    bool drag(const int x,const int y);
-    // Called on right mouse down at (x,y)
-    //
-    // Return whether (x,y) is down, set is_down accordingly
-    bool right_down(const int x,const int y);
-    // Called on mouse up at (x,y)
-    //
-    // Returns whether still is_down
-    bool up(const int x,const int y);
-};
-#endif

examples/beach-balls/Makefile

@@ -1,32 +0,0 @@
-.PHONY: all
-
-# Shared flags etc.
-include ../Makefile.conf
-
-all: obj example
-
-.PHONY: example
-
-CFLAGS+=-g -std=c++11
-
-INC=$(LIBIGL_INC) $(ANTTWEAKBAR_INC) $(EIGEN3_INC) $(GLUT_INC)
-LIB=$(OPENGL_LIB) $(GLUT_LIB) $(ANTTWEAKBAR_LIB) $(LIBIGL_LIB)
-
-CPP_FILES=$(wildcard ./*.cpp)
-OBJ_FILES=$(addprefix obj/,$(notdir $(CPP_FILES:.cpp=.o))) 
-
-example: obj $(OBJ_FILES)
-	g++ $(OPENMP) $(AFLAGS) $(CFLAGS) -o example $(OBJ_FILES) $(LIB)
-
-obj:
-	mkdir -p obj
-
-obj/%.o: %.cpp
-	g++ $(OPENMP) $(AFLAGS) $(CFLAGS) -c $< -o $@ $(INC)
-
-obj/%.o: %.cpp %.h
-	g++ $(OPENMP) $(AFLAGS) $(CFLAGS) -c $< -o $@ $(INC)
-
-clean:
-	rm -f $(OBJ_FILES)
-	rm -f example

examples/beach-balls/example.cpp

@@ -1,272 +0,0 @@
-#include "BeachBall.h"
-
-#include <igl/quat_to_mat.h>
-#include <igl/opengl/report_gl_error.h>
-#include <igl/trackball.h>
-#include <igl/canonical_quaternions.h>
-#include <igl/PI.h>
-
-#include <GLUT/GLUT.h>
-
-#include <iostream>
-#include <algorithm>
-#include <vector>
-#include <cmath>
-
-double back[3] = {85.0/255.0,85.0/255.0,85.0/255.0};
-double width,height;
-double scene_rot[4] = {0,0,0,1};
-double * BeachBall::scene_rot = NULL;
-double down_scene_rot[4] = {0,0,0,1};
-int down_mouse_x=-1,down_mouse_y=-1;
-bool trackball_on = false;
-const float light_pos[4] = {-0.2, -0.1, 1,0};
-
-std::vector<BeachBall> balls;
-float plane[4] = {0,0,1,1.5};
-
-int display_count = 0;
-
-void push_scene()
-{
-  using namespace igl;
-  glMatrixMode(GL_PROJECTION);
-  glLoadIdentity();
-  //gluOrtho2D(0,width,0,height);
-  gluPerspective(15,(double)width/(double)height,1e-2,300);
-  glMatrixMode(GL_MODELVIEW);
-  glLoadIdentity();
-  glPushMatrix();
-  gluLookAt(0,0,20,0,0,0,0,1,0);
-  double mat[4*4];
-  quat_to_mat(scene_rot,mat);
-  glMultMatrixd(mat);
-}
-
-void lights()
-{
-  using namespace std;
-  using namespace igl;
-
-  glEnable(GL_LIGHTING);
-  float ones[4] = {1.0,1.0,1.0,1.0};
-  glLightfv(GL_LIGHT0,GL_AMBIENT,ones);
-  glLightfv(GL_LIGHT0,GL_DIFFUSE,ones);
-  glLightfv(GL_LIGHT0,GL_SPECULAR,ones);
-  glLightfv(GL_LIGHT0,GL_POSITION,light_pos);
-  glEnable(GL_LIGHT0);
-}
-
-void pop_scene()
-{
-  glPopMatrix();
-}
-
-void display()
-{
-  using namespace std;
-  using namespace igl;
-
-  glEnable(GL_BLEND);
-  glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
-
-  if(true || display_count==0 || display_count==200)
-  {
-    glClearColor(back[0],back[1],back[2],0);
-    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-    glEnable(GL_DEPTH_TEST);
-    
-    lights();
-    push_scene();
-
-    //// Normal list
-    //for(int i = 0;i<(int)balls.size();i++)
-    //{
-    //  balls[i].draw();
-    //}
-
-    // single root
-    balls[0].draw();
-    balls[0].push();
-    for(int i = 1;i<(int)balls.size();i++)
-    {
-      balls[i].radius = 0.5;
-      balls[i].draw();
-    }
-    balls[0].pop();
-
-  // Draw floor
-    glEnable(GL_COLOR_MATERIAL);
-    glEnable(GL_POLYGON_OFFSET_FILL);
-    glPolygonOffset(10.0,1);
-    float size = 10;
-    glBegin(GL_QUADS);
-    glNormal3f(0,0,1);
-    glColor4f(0,0.2,0.8,0.5);
-    glVertex4f(-size,-size,-plane[3],1);
-    glColor4f(0,0,1,0.5);
-    glVertex4f( size,-size,-plane[3],1);
-    glColor4f(0.0,0.1,0.5,0.5);
-    glVertex4f( size, size,-plane[3],1);
-    //glColor4f(back[0],back[1],back[2],1);
-    glColor4f(0.0,0.1,0.5,0.5);
-    glVertex4f(-size, size,-plane[3],1);
-    glEnd();
-    glDisable(GL_POLYGON_OFFSET_FILL);
-    pop_scene();
-  }
-
-
-  //// Animation
-  //for(int i = 0;i<(int)balls.size();i++)
-  //{
-  //  balls[i].r[0] += cos(double(i*display_count)/1000.0) + sin(double(display_count)/1000.0);
-  //  balls[i].r[1] += sin(double(2*i*display_count)/1000.0) + cos(double(2*display_count)/1000.0);
-  //  balls[i].r[2] += cos(double(3*i*display_count)/1000.0) + sin(double(3*display_count)/1000.0);
-  //  balls[i].r[3] += sin(double(4*i*display_count)/1000.0) + cos(double(4*display_count)/1000.0);
-  //  double len = 
-  //    sqrt(balls[i].r[0]*balls[i].r[0]+
-  //    balls[i].r[1]*balls[i].r[1]+
-  //    balls[i].r[2]*balls[i].r[2]+
-  //    balls[i].r[3]*balls[i].r[3]);
-  //  for(int j = 0;j<4;j++)
-  //  {
-  //    balls[i].r[j] /= len;
-  //  }
-  //}
-
-  igl::opengl::report_gl_error();
-  glutSwapBuffers();
-  glutPostRedisplay();
-
-  display_count++;
-}
-
-void reshape(int width, int height)
-{
-  using namespace std;
-  ::width = width;
-  ::height = height;
-  glMatrixMode(GL_PROJECTION);
-  glLoadIdentity();
-  glViewport(0,0,width,height);
-}
-
-void key(unsigned char key, int /*mouse_x*/, int /*mouse_y*/)
-{
-  using namespace std;
-
-  switch(key)
-  {
-    case char(27):
-      exit(0);
-    default:
-      cout<<"Unknown key command: "<<key<<" "<<int(key)<<endl;
-  }
-}
-
-void mouse(int glutButton, int glutState, int mouse_x, int mouse_y)
-{
-  mouse_y = height-mouse_y;
-  using namespace std;
-  push_scene();
-  if(glutState==1)
-  {
-    for(int i = 0;i<(int)balls.size();i++)
-    {
-      balls[i].up(mouse_x,mouse_y);
-      balls[i].hover(mouse_x,mouse_y);
-    }
-    trackball_on = false;
-  }else if(glutState==0)
-  {
-    // down
-    bool any = false;
-    for(int i = 0;!any && i<(int)balls.size();i++)
-    {
-      if(glutButton==0)
-      {
-        any |= balls[i].down(mouse_x,mouse_y);
-      }else if(glutButton==2)
-      {
-        any |= balls[i].right_down(mouse_x,mouse_y);
-      }
-    }
-    trackball_on = !any;
-    copy(scene_rot,scene_rot+4,down_scene_rot);
-    down_mouse_x = mouse_x;
-    down_mouse_y = mouse_y;
-  }
-  pop_scene();
-}
-
-void mouse_drag(int mouse_x, int mouse_y)
-{
-  mouse_y = height-mouse_y;
-  using namespace std;
-  using namespace igl;
-  if(trackball_on)
-  {
-    trackball<double>(
-      width,
-      height,
-      2,
-      down_scene_rot,
-      down_mouse_x,
-      height-down_mouse_y,
-      mouse_x,
-      height-mouse_y,
-      scene_rot);
-  }
-  push_scene();
-  for(int i = 0;i<(int)balls.size();i++)
-  {
-    balls[i].drag(mouse_x,mouse_y);
-  }
-  pop_scene();
-
-}
-
-void mouse_move(int mouse_x, int mouse_y)
-{
-  mouse_y = height-mouse_y;
-  push_scene();
-  bool any = false;
-  for(int i = 0;!any && i<(int)balls.size();i++)
-  {
-    any |= balls[i].hover(mouse_x,mouse_y);
-  }
-  pop_scene();
-}
-
-
-int main(int argc,char * argv[])
-{
-  using namespace igl;
-  using namespace std;
-  glutInit(&argc,argv);
-  glutInitDisplayString( "rgba depth double samples>=8 ");
-  glutInitWindowSize(glutGet(GLUT_SCREEN_WIDTH),glutGet(GLUT_SCREEN_HEIGHT)/2);
-  glutCreateWindow(__FILE__);
-  glutDisplayFunc(display);
-  glutReshapeFunc(reshape);
-  glutKeyboardFunc(key);
-  glutMouseFunc(mouse);
-  glutMotionFunc(mouse_drag);
-  glutPassiveMotionFunc(mouse_move);
-
-  //copy(XZ_PLANE_QUAT_D,XZ_PLANE_QUAT_D+4,scene_rot);
-
-  balls.push_back(BeachBall());
-  const int children = 10;
-  for(int i = 1;i<=children;i++)
-  {
-    balls.push_back(BeachBall());
-    balls[i].t[0] = 2.5*sin(double(i)*2.0*PI/double(children));
-    balls[i].t[1] = 2.5*cos(double(i)*2.0*PI/double(children));
-  }
-  BeachBall::scene_rot = scene_rot;
-
-  glutMainLoop();
-  return 0;
-}

examples/camera/Makefile

@@ -1,32 +0,0 @@
-.PHONY: all
-
-# Shared flags etc.
-include ../Makefile.conf
-
-all: obj example
-
-.PHONY: example
-
-INC=$(LIBIGL_INC) $(ANTTWEAKBAR_INC) $(EIGEN3_INC) $(GLUT_INC)
-LIB=$(OPENGL_LIB) $(GLUT_LIB) $(ANTTWEAKBAR_LIB) $(LIBIGL_LIB)
-
-CPP_FILES=$(wildcard ./*.cpp)
-OBJ_FILES=$(addprefix obj/,$(notdir $(CPP_FILES:.cpp=.o))) 
-
-CFLAGS+=-std=c++11 -g -O0
-
-example: obj $(OBJ_FILES)
-	g++ $(OPENMP) $(AFLAGS) $(CFLAGS) -o example $(OBJ_FILES) $(LIB)
-
-obj:
-	mkdir -p obj
-
-obj/%.o: %.cpp
-	g++ $(OPENMP) $(AFLAGS) $(CFLAGS) -c $< -o $@ $(INC)
-
-obj/%.o: %.cpp %.h
-	g++ $(OPENMP) $(AFLAGS) $(CFLAGS) -c $< -o $@ $(INC)
-
-clean:
-	rm -f $(OBJ_FILES)
-	rm -f example

examples/camera/example.cpp

@@ -1,697 +0,0 @@
-
-#include <igl/Viewport.h>
-#include <igl/Camera.h>
-#include <igl/matlab_format.h>
-#include <igl/opengl/report_gl_error.h>
-#include <igl/anttweakbar/ReAntTweakBar.h>
-#include <igl/trackball.h>
-#include <igl/two_axis_valuator_fixed_up.h>
-#include <igl/PI.h>
-#include <igl/EPS.h>
-#include <igl/get_seconds.h>
-#include <igl/material_colors.h>
-#include <igl/opengl2/draw_mesh.h>
-#include <igl/readOFF.h>
-#include <igl/per_face_normals.h>
-#include <igl/opengl2/draw_floor.h>
-#include <igl/opengl2/project.h>
-#include <igl/opengl2/unproject.h>
-
-#include <Eigen/Core>
-#include <Eigen/Geometry>
-
-#ifdef __APPLE__
-#include <GLUT/glut.h>
-#else
-#include <GL/glut.h>
-#endif
-
-#ifndef GLUT_WHEEL_UP
-#define GLUT_WHEEL_UP    3
-#endif
-#ifndef GLUT_WHEEL_DOWN
-#define GLUT_WHEEL_DOWN  4
-#endif
-#ifndef GLUT_WHEEL_RIGHT
-#define GLUT_WHEEL_RIGHT 5
-#endif
-#ifndef GLUT_WHEEL_LEFT
-#define GLUT_WHEEL_LEFT  6
-#endif
-#ifndef GLUT_ACTIVE_COMMAND
-#define GLUT_ACTIVE_COMMAND 8
-#endif
-
-#include <vector>
-#include <stack>
-#include <iostream>
-#include <algorithm>
-
-
-enum RotationType
-{
-  ROTATION_TYPE_IGL_TRACKBALL = 0,
-  ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP = 1,
-  NUM_ROTATION_TYPES = 2,
-} rotation_type = ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP;
-
-enum CenterType
-{
-  CENTER_TYPE_ORBIT = 0,
-  CENTER_TYPE_FPS  = 1,
-  NUM_CENTER_TYPES = 2,
-} center_type = CENTER_TYPE_ORBIT;
-
-int width,height;
-#define REBAR_NAME "temp.rbr"
-igl::anttweakbar::ReTwBar rebar;
-struct State
-{
-  std::vector<igl::Camera> cameras;
-  std::vector<GLuint> tex_ids;
-  std::vector<GLuint> fbo_ids;
-  std::vector<GLuint> dfbo_ids;
-  State():cameras(4),
-    tex_ids(cameras.size()),
-    fbo_ids(cameras.size()),
-    dfbo_ids(cameras.size())
-    {}
-} s;
-const Eigen::Vector4d back(1,1,1,1);
-std::stack<State> undo_stack;
-bool is_rotating = false;
-igl::Camera down_camera;
-int down_x,down_y;
-std::stack<State> redo_stack;
-Eigen::MatrixXd V,N;
-Eigen::MatrixXi F;
-Eigen::Vector4f light_pos(-0.1,-0.1,0.9,0);
-
-void push_undo()
-{
-  undo_stack.push(s);
-  // Clear
-  redo_stack = std::stack<State>();
-}
-
-void undo()
-{
-  if(!undo_stack.empty())
-  {
-    redo_stack.push(s);
-    s = undo_stack.top();
-    undo_stack.pop();
-  }
-}
-
-void redo()
-{
-  if(!redo_stack.empty())
-  {
-    undo_stack.push(s);
-    s = redo_stack.top();
-    redo_stack.pop();
-  }
-}
-
-void print(const igl::Camera & camera)
-{
-  using namespace std;
-  cout<<
-    "rotation:    "<<camera.m_rotation_conj.conjugate().coeffs().transpose()<<endl<<
-    "translation: "<<camera.m_translation.transpose()<<endl<<
-    "eye:         "<<camera.eye().transpose()<<endl<<
-    "at:          "<<camera.at().transpose()<<endl<<
-    "up:          "<<camera.up().transpose()<<endl<<
-    endl;
-}
-
-void init_cameras()
-{
-  using namespace Eigen;
-  using namespace std;
-  s.cameras[0].look_at(
-    Vector3d(0,0,1),
-    Vector3d(0,0,0),
-    Vector3d(0,1,0));
-  s.cameras[1].look_at(
-    Vector3d(0,0,-1),
-    Vector3d(0,0,0),
-    Vector3d(0,1,0));
-  s.cameras[2].look_at(
-    Vector3d(-2,0,0),
-    Vector3d(0,0,0),
-    Vector3d(0,1,0));
-  s.cameras[3].look_at(
-    Vector3d(3,0,0),
-    Vector3d(0,0,0),
-    Vector3d(0,1,0));
-}
-
-bool init_render_to_texture(
-  const int width, 
-  const int height, 
-  GLuint & tex_id, 
-  GLuint & fbo_id, 
-  GLuint & dfbo_id)
-{
-  using namespace igl;
-  using namespace std;
-  // Set up a "render-to-texture" frame buffer and texture combo
-  glDeleteTextures(1,&tex_id);
-  glDeleteFramebuffersEXT(1,&fbo_id);
-  glDeleteFramebuffersEXT(1,&dfbo_id);
-  // http://www.opengl.org/wiki/Framebuffer_Object_Examples#Quick_example.2C_render_to_texture_.282D.29
-  glGenTextures(1, &tex_id);
-  glBindTexture(GL_TEXTURE_2D, tex_id);
-  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
-  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
-  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-  //NULL means reserve texture memory, but texels are undefined
-  glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0, GL_BGRA, GL_UNSIGNED_BYTE, NULL);
-  glBindTexture(GL_TEXTURE_2D, 0);
-  //-------------------------
-  glGenFramebuffersEXT(1, &fbo_id);
-  glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo_id);
-  //Attach 2D texture to this FBO
-  glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, tex_id, 0);
-  glGenRenderbuffersEXT(1, &dfbo_id);
-  glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, dfbo_id);
-  glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT24, width, height);
-  //-------------------------
-  //Attach depth buffer to FBO
-  glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, dfbo_id);
-  //-------------------------
-  //Does the GPU support current FBO configuration?
-  GLenum status;
-  status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
-  switch(status)
-  {
-    case GL_FRAMEBUFFER_COMPLETE_EXT:
-      break;
-    default:
-      return false;
-  }
-  glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);
-  glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
-  return true;
-}
-
-void reshape(int width, int height)
-{
-  ::width = width;
-  ::height = height;
-  glViewport(0,0,width,height);
-  // Send the new window size to AntTweakBar
-  TwWindowSize(width, height);
-}
-
-
-// Set up double-sided lights
-void lights()
-{
-  using namespace std;
-  using namespace Eigen;
-  glEnable(GL_LIGHTING);
-  glLightModelf(GL_LIGHT_MODEL_TWO_SIDE,GL_TRUE);
-  glEnable(GL_LIGHT0);
-  float WHITE[4] =  {0.8,0.8,0.8,1.};
-  float GREY[4] =  {0.4,0.4,0.4,1.};
-  float BLACK[4] =  {0.,0.,0.,1.};
-  Vector4f pos = light_pos;
-  glLightfv(GL_LIGHT0,GL_AMBIENT,GREY);
-  glLightfv(GL_LIGHT0,GL_DIFFUSE,WHITE);
-  glLightfv(GL_LIGHT0,GL_SPECULAR,BLACK);
-  glLightfv(GL_LIGHT0,GL_POSITION,pos.data());
-}
-
-void draw_scene(const igl::Camera & v_camera,
-  const bool render_to_texture,
-  const GLuint & v_tex_id, 
-  const GLuint & v_fbo_id, 
-  const GLuint & v_dfbo_id)
-{
-  using namespace igl;
-  using namespace std;
-  using namespace Eigen;
-
-  if(render_to_texture)
-  {
-    // render to framebuffer
-    glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, v_fbo_id);
-    glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, v_dfbo_id);
-    glClearColor(back(0),back(1),back(2),1);
-    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-  }
-
-  glMatrixMode(GL_PROJECTION);
-  glPushMatrix();
-  glLoadIdentity();
-  glMultMatrixd(v_camera.projection().data());
-  //{
-  //  Matrix4d m;
-  //  glGetDoublev(GL_PROJECTION_MATRIX,m.data());
-  //  cout<<matlab_format(m,"Camera")<<endl;
-  //}
-  glMatrixMode(GL_MODELVIEW);
-  glPushMatrix();
-  glLoadIdentity();
-  gluLookAt(
-    v_camera.eye()(0), v_camera.eye()(1), v_camera.eye()(2),
-    v_camera.at()(0), v_camera.at()(1), v_camera.at()(2),
-    v_camera.up()(0), v_camera.up()(1), v_camera.up()(2));
-  //glLoadIdentity();
-  //glMultMatrixd(v_camera.inverse().matrix().data());
-
-  for(int c = 0;c<(int)s.cameras.size();c++)
-  {
-    auto & camera = s.cameras[c];
-    if(&v_camera == &camera)
-    {
-      continue;
-    }
-    // draw camera
-    glPushMatrix();
-    glMultMatrixd(camera.affine().matrix().data());
-    // eye
-    glColor4f(0,0,0,1);
-    glPointSize(10.f);
-    glBegin(GL_POINTS);
-    glVertex3f(0,0,0);
-    glEnd();
-    // frustrum
-    const Vector3d u = camera.unit_plane();
-    glBegin(GL_LINES);
-    for(int x = -1;x<=1;x+=2)
-    {
-      for(int y = -1;y<=1;y+=2)
-      {
-        glVertex3f(0,0,0);
-        glVertex3f(x*u(0),y*u(1),u(2));
-      }
-    }
-    glEnd();
-    const Vector3d n = u*(camera.m_near-FLOAT_EPS);
-    glBegin(GL_QUADS);
-      glVertex3f( n(0),-n(1),n(2));
-      glVertex3f(-n(0),-n(1),n(2));
-      glVertex3f(-n(0), n(1),n(2));
-      glVertex3f( n(0), n(1),n(2));
-    glEnd();
-    for(int pass = 0;pass<2;pass++)
-    {
-      switch(pass)
-      {
-        case 1:
-          glColor4f(1,1,1,0.5);
-          glPolygonMode(GL_FRONT_AND_BACK,GL_FILL);
-          //glEnable(GL_BLEND);
-          glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); 
-          glEnable(GL_TEXTURE_2D);
-          glBindTexture(GL_TEXTURE_2D,s.tex_ids[c]);
-          break;
-        default:
-        case 0:
-          glPolygonMode(GL_FRONT_AND_BACK,GL_LINE);
-          glColor4f(0,0,0,1);
-          break;
-      }
-      glBegin(GL_QUADS);
-        glTexCoord2d(1,0);
-        glVertex3f( 0.5*u(0),-0.5*u(1),0.5*u(2));
-        glTexCoord2d(0,0);
-        glVertex3f(-0.5*u(0),-0.5*u(1),0.5*u(2));
-        glTexCoord2d(0,1);
-        glVertex3f(-0.5*u(0), 0.5*u(1),0.5*u(2));
-        glTexCoord2d(1,1);
-        glVertex3f( 0.5*u(0), 0.5*u(1),0.5*u(2));
-      glEnd();
-      switch(pass)
-      {
-        case 1:
-          glBindTexture(GL_TEXTURE_2D, 0);
-          glDisable(GL_TEXTURE_2D);
-          glDisable(GL_BLEND);
-          break;
-        default:
-          break;
-      }
-    }
-
-    glPopMatrix();
-  }
-
-  // Set material properties
-  lights();
-  glEnable(GL_LIGHTING);
-  glDisable(GL_COLOR_MATERIAL);
-  glMaterialfv(GL_FRONT, GL_AMBIENT,  GOLD_AMBIENT);
-  glMaterialfv(GL_FRONT, GL_DIFFUSE,  GOLD_DIFFUSE  );
-  glMaterialfv(GL_FRONT, GL_SPECULAR, GOLD_SPECULAR);
-  glMaterialf (GL_FRONT, GL_SHININESS, 128);
-  glMaterialfv(GL_BACK, GL_AMBIENT,  SILVER_AMBIENT);
-  glMaterialfv(GL_BACK, GL_DIFFUSE,  FAST_GREEN_DIFFUSE  );
-  glMaterialfv(GL_BACK, GL_SPECULAR, SILVER_SPECULAR);
-  glMaterialf (GL_BACK, GL_SHININESS, 128);
-  igl::opengl2::draw_mesh(V,F,N);
-  glDisable(GL_LIGHTING);
-  glEnable(GL_COLOR_MATERIAL);
-  //glLineWidth(3.f);
-  //glColor4f(1,0,1,1);
-  //glutWireCube(0.25);
-  //glColor4f(1,0.5,0.5,1);
-  ////glutWireSphere(0.125,20,20);
-  {
-    glPushMatrix();
-    glTranslated(0,-1,0);
-    igl::opengl2::draw_floor();
-    glPopMatrix();
-  }
-  
-  // Axes
-  for(int d = 0;d<3;d++)
-  {
-    glColor4f(d==0,d==1,d==2,1);
-    glBegin(GL_LINES);
-    glVertex3f(0,0,0);
-    glVertex3f(d==0,d==1,d==2);
-    glEnd();
-  }
-
-  glMatrixMode(GL_PROJECTION);
-  glPopMatrix();
-  glMatrixMode(GL_MODELVIEW);
-  glPopMatrix();
-  igl::opengl::report_gl_error();
-
-  if(render_to_texture)
-  {
-    glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
-    glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);
-  }
-}
-
-void display()
-{
-  using namespace igl;
-  using namespace std;
-  using namespace Eigen;
-  glClearColor(back(0),back(1),back(2),0);
-  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-  glEnable(GL_DEPTH_TEST);
-
-  // Update aspect ratios (may have changed since undo/redo)
-  {
-    const double aspect = (double)width/(double)height;
-    for(int c = 0;c<(int)s.cameras.size();c++)
-    {
-      auto & camera = s.cameras[c];
-      auto & tex_id = s.tex_ids[c];
-      auto & fbo_id = s.fbo_ids[c];
-      auto & dfbo_id = s.dfbo_ids[c];
-      if(aspect != camera.m_aspect)
-      {
-        cout<<"Initializing camera #"<<c<<"..."<<endl;
-        camera.m_aspect = aspect;
-        bool ret = init_render_to_texture(width,height,tex_id,fbo_id,dfbo_id);
-        assert(ret);
-      }
-      draw_scene(camera,true,tex_id,fbo_id,dfbo_id);
-    }
-  }
-  {
-    auto & camera = s.cameras[0];
-    draw_scene(camera,false,0,0,0);
-  }
-
-
-  TwDraw();
-  glutSwapBuffers();
-}
-
-
-void mouse_wheel(int wheel, int direction, int mouse_x, int mouse_y)
-{
-  using namespace std;
-  using namespace igl;
-  using namespace Eigen;
-  GLint viewport[4];
-  glGetIntegerv(GL_VIEWPORT,viewport);
-  if(wheel == 0 && TwMouseMotion(mouse_x, viewport[3] - mouse_y))
-  {
-    static double mouse_scroll_y = 0;
-    const double delta_y = 0.125*direction;
-    mouse_scroll_y += delta_y;
-    TwMouseWheel(mouse_scroll_y);
-    return;
-  }
-
-  auto & camera = s.cameras[0];
-  switch(center_type)
-  {
-    case CENTER_TYPE_ORBIT:
-      if(wheel==0)
-      {
-        // factor of zoom change
-        double s = (1.-0.01*direction);
-        //// FOV zoom: just widen angle. This is hardly ever appropriate.
-        //camera.m_angle *= s;
-        //camera.m_angle = min(max(camera.m_angle,1),89);
-        camera.push_away(s);
-      }else
-      {
-        // Dolly zoom:
-        camera.dolly_zoom((double)direction*1.0);
-      }
-      break;
-    default:
-    case CENTER_TYPE_FPS:
-      // Move `eye` and `at` 
-      camera.dolly((wheel==0?Vector3d(0,0,1):Vector3d(-1,0,0))*0.1*direction);
-      break;
-  }
-  glutPostRedisplay();
-}
-
-void mouse(int glutButton, int glutState, int mouse_x, int mouse_y)
-{
-  using namespace std;
-  using namespace Eigen;
-  using namespace igl;
-  bool tw_using = TwEventMouseButtonGLUT(glutButton,glutState,mouse_x,mouse_y);
-  switch(glutButton)
-  {
-    case GLUT_RIGHT_BUTTON:
-    case GLUT_LEFT_BUTTON:
-    {
-      switch(glutState)
-      {
-        case 1:
-          // up
-          glutSetCursor(GLUT_CURSOR_INHERIT);
-          is_rotating = false;
-          break;
-        case 0:
-          if(!tw_using)
-          {
-            push_undo();
-            glutSetCursor(GLUT_CURSOR_CYCLE);
-            // collect information for trackball
-            is_rotating = true;
-            down_camera = s.cameras[0];
-            down_x = mouse_x;
-            down_y = mouse_y;
-          }
-        break;
-      }
-      break;
-    }
-#ifdef GLUT_WHEEL_DOWN
-    // Scroll down
-    case GLUT_WHEEL_DOWN:
-    {
-      mouse_wheel(0,-1,mouse_x,mouse_y);
-      break;
-    }
-#endif
-#ifdef GLUT_WHEEL_UP
-    // Scroll up
-    case GLUT_WHEEL_UP:
-    {
-      mouse_wheel(0,1,mouse_x,mouse_y);
-      break;
-    }
-#endif
-#ifdef GLUT_WHEEL_LEFT
-    // Scroll left
-    case GLUT_WHEEL_LEFT:
-    {
-      mouse_wheel(1,-1,mouse_x,mouse_y);
-      break;
-    }
-#endif
-#ifdef GLUT_WHEEL_RIGHT
-    // Scroll right
-    case GLUT_WHEEL_RIGHT:
-    {
-      mouse_wheel(1,1,mouse_x,mouse_y);
-      break;
-    }
-#endif
-  }
-  glutPostRedisplay();
-}
-
-void mouse_drag(int mouse_x, int mouse_y)
-{
-  using namespace igl;
-  using namespace std;
-  using namespace Eigen;
-  /*bool tw_using =*/ TwMouseMotion(mouse_x,mouse_y);
-
-  if(is_rotating)
-  {
-    glutSetCursor(GLUT_CURSOR_CYCLE);
-    auto & camera = s.cameras[0];
-    Quaterniond q;
-    switch(rotation_type)
-    {
-      case ROTATION_TYPE_IGL_TRACKBALL:
-      {
-        // Rotate according to trackball
-        igl::trackball(
-          width, height,
-          2.0,
-          down_camera.m_rotation_conj,
-          down_x, down_y, mouse_x, mouse_y,
-          q);
-          break;
-      }
-      case ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP:
-      {
-        // Rotate according to two axis valuator with fixed up vector 
-        two_axis_valuator_fixed_up(
-          width, height,
-          2.0,
-          down_camera.m_rotation_conj,
-          down_x, down_y, mouse_x, mouse_y,
-          q);
-        break;
-      }
-      default:
-        break;
-    }
-    switch(center_type)
-    {
-      default:
-      case CENTER_TYPE_ORBIT:
-        camera.orbit(q.conjugate());
-        break;
-      case CENTER_TYPE_FPS:
-        camera.turn_eye(q.conjugate());
-        break;
-    }
-  }
-  glutPostRedisplay();
-}
-
-void key(unsigned char key, int mouse_x, int mouse_y)
-{
-  using namespace std;
-  int mod = glutGetModifiers();
-  switch(key)
-  {
-    // ESC
-    case char(27):
-      rebar.save(REBAR_NAME);
-    // ^C
-    case char(3):
-      exit(0);
-    case 'o':
-    case 'O':
-      {
-        s.cameras[0].m_orthographic ^= true;
-        break;
-      }
-    case 'z':
-    case 'Z':
-      if(mod & GLUT_ACTIVE_COMMAND)
-      {
-        if(mod & GLUT_ACTIVE_SHIFT)
-        {
-          redo();
-        }else
-        {
-          undo();
-        }
-        break;
-      }
-    default:
-      if(!TwEventKeyboardGLUT(key,mouse_x,mouse_y))
-      {
-        cout<<"Unknown key command: "<<key<<" "<<int(key)<<endl;
-      }
-  }
-  glutPostRedisplay();
-}
-
-int main(int argc, char * argv[])
-{
-  using namespace std;
-  using namespace Eigen;
-  using namespace igl;
-
-  // print key commands
-  cout<<"[Command+Z]         Undo."<<endl;
-  cout<<"[Shift+Command+Z]   Redo."<<endl;
-  cout<<"[^C,ESC]            Exit."<<endl;
-
-  if(!readOFF("../shared/cheburashka.off",V,F))
-  {
-    cerr<<"Failed to read in mesh..."<<endl;
-    return 1;
-  }
-  V.rowwise() -= V.colwise().minCoeff().eval();
-  per_face_normals(V,F,N);
-
-  // Init glut
-  glutInit(&argc,argv);
-  if( !TwInit(TW_OPENGL, NULL) )
-  {
-    // A fatal error occured
-    fprintf(stderr, "AntTweakBar initialization failed: %s\n", TwGetLastError());
-    return 1;
-  }
-  // Create a tweak bar
-  rebar.TwNewBar("bar");
-  TwDefine("bar label='camera' size='200 550' text=light alpha='200' color='68 68 68'");
-  TwType RotationTypeTW = igl::anttweakbar::ReTwDefineEnumFromString(
-      "RotationType","igl_trackball,two_axis_fixed_up");
-  rebar.TwAddVarRW("rotation_type", RotationTypeTW,&rotation_type,
-    "keyIncr=] keyDecr=[");
-  TwType CenterTypeTW = igl::anttweakbar::ReTwDefineEnumFromString(
-      "CenterType","orbit,fps");
-  rebar.TwAddVarRW("center_type", CenterTypeTW,&center_type,
-    "keyIncr={ keyDecr=}");
-  rebar.TwAddVarRW("rotation", TW_TYPE_QUAT4D,s.cameras[0].m_rotation_conj.coeffs().data(),"");
-  rebar.load(REBAR_NAME);
-  init_cameras();
-
-  // Init antweakbar
-  glutInitDisplayString( "rgba depth double samples>=8");
-  // Top right corner
-  glutInitWindowSize(glutGet(GLUT_SCREEN_WIDTH)/2.0,glutGet(GLUT_SCREEN_HEIGHT)/2.0);
-  glutInitWindowPosition(glutGet(GLUT_SCREEN_WIDTH)/2.0,-1);
-  glutCreateWindow("camera");
-  glutDisplayFunc(display);
-  glutReshapeFunc(reshape);
-  glutKeyboardFunc(key);
-  glutMouseFunc(mouse);
-  glutPassiveMotionFunc((GLUTmousemotionfun)TwEventMouseMotionGLUT);
-  glutMotionFunc(mouse_drag);
-
-  glutMainLoop();
-
-  return 0;
-}

examples/colored-mesh/Makefile

@@ -1,20 +0,0 @@
-.PHONY: all
-
-# Shared flags etc.
-include ../Makefile.conf
-
-all: example
-
-.PHONY: example
-
-INC=$(LIBIGL_INC) $(ANTTWEAKBAR_INC) $(EIGEN3_INC) $(EMBREE_INC)
-LIB=$(OPENGL_LIB) $(GLUT_LIB) $(ANTTWEAKBAR_LIB) $(LIBIGL_LIB) $(EMBREE_LIB)
-
-example: example.o
-	g++ $(OPENMP) $(AFLAGS) $(CFLAGS) $(LIB) -o example example.o 
-
-example.o: example.cpp
-	g++ $(OPENMP) $(AFLAGS) $(CFLAGS) -c example.cpp -o example.o $(INC)
-clean:
-	rm -f example.o
-	rm -f example

examples/colored-mesh/example.cpp

@@ -1,602 +0,0 @@
-#include <igl/opengl/OpenGL_convenience.h>
-#include <igl/per_face_normals.h>
-#include <igl/per_vertex_normals.h>
-#include <igl/two_axis_valuator_fixed_up.h>
-#include <igl/normalize_row_lengths.h>
-#include <igl/opengl2/draw_mesh.h>
-#include <igl/opengl2/draw_floor.h>
-#include <igl/quat_to_mat.h>
-#include <igl/opengl/report_gl_error.h>
-#include <igl/readOBJ.h>
-#include <igl/readDMAT.h>
-#include <igl/readOFF.h>
-#include <igl/readMESH.h>
-#include <igl/jet.h>
-#include <igl/readWRL.h>
-#include <igl/trackball.h>
-#include <igl/list_to_matrix.h>
-#include <igl/snap_to_canonical_view_quat.h>
-#include <igl/snap_to_fixed_up.h>
-#include <igl/polygon_mesh_to_triangle_mesh.h>
-#include <igl/material_colors.h>
-#include <igl/barycenter.h>
-#include <igl/matlab_format.h>
-#include <igl/anttweakbar/ReAntTweakBar.h>
-#include <igl/pathinfo.h>
-#include <igl/Camera.h>
-#include <igl/get_seconds.h>
-
-#ifdef __APPLE__
-#  include <GLUT/glut.h>
-#else
-#  include <GL/glut.h>
-#endif
-
-#include <Eigen/Core>
-
-#include <vector>
-#include <iostream>
-#include <algorithm>
-
-struct State
-{
-  igl::Camera camera;
-} s;
-enum RotationType
-{
-  ROTATION_TYPE_IGL_TRACKBALL = 0,
-  ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP = 1,
-  NUM_ROTATION_TYPES = 2,
-} rotation_type;
-bool is_rotating = false;
-int down_x,down_y;
-igl::Camera down_camera;
-bool is_animating = false;
-double animation_start_time = 0;
-double ANIMATION_DURATION = 0.5;
-Eigen::Quaterniond animation_from_quat;
-Eigen::Quaterniond animation_to_quat;
-// Use vector for range-based `for`
-std::vector<State> undo_stack;
-std::vector<State> redo_stack;
-
-void push_undo()
-{
-  undo_stack.push_back(s);
-  // Clear
-  redo_stack = std::vector<State>();
-}
-
-void undo()
-{
-  using namespace std;
-  if(!undo_stack.empty())
-  {
-    redo_stack.push_back(s);
-    s = undo_stack.front();
-    undo_stack.pop_back();
-  }
-}
-
-void redo()
-{
-  using namespace std;
-  if(!redo_stack.empty())
-  {
-    undo_stack.push_back(s);
-    s = redo_stack.front();
-    redo_stack.pop_back();
-  }
-}
-
-void TW_CALL set_rotation_type(const void * value, void * clientData)
-{
-  using namespace Eigen;
-  using namespace std;
-  using namespace igl;
-  const RotationType old_rotation_type = rotation_type;
-  rotation_type = *(const RotationType *)(value);
-  if(rotation_type == ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP &&
-    old_rotation_type != ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP)
-  {
-    push_undo();
-    animation_from_quat = s.camera.m_rotation_conj;
-    snap_to_fixed_up(animation_from_quat,animation_to_quat);
-    // start animation
-    animation_start_time = get_seconds();
-    is_animating = true;
-  }
-}
-
-void TW_CALL get_rotation_type(void * value, void *clientData)
-{
-  RotationType * rt = (RotationType *)(value);
-  *rt = rotation_type;
-}
-
-// Width and height of window
-int width,height;
-// Position of light
-float light_pos[4] = {0.1,0.1,-0.9,0};
-// Vertex positions, normals, colors and centroid
-Eigen::MatrixXd V,N,C,Z,mid;
-int selected_col = 0;
-// Faces
-Eigen::MatrixXi F;
-// Bounding box diagonal length
-double bbd;
-// Running ambient occlusion
-Eigen::VectorXd S;
-int tot_num_samples = 0;
-#define REBAR_NAME "temp.rbr"
-igl::anttweakbar::ReTwBar rebar; // Pointer to the tweak bar
-
-void reshape(int width,int height)
-{
-  using namespace std;
-  // Save width and height
-  ::width = width;
-  ::height = height;
-  glMatrixMode(GL_PROJECTION);
-  glLoadIdentity();
-  glViewport(0,0,width,height);
-  // Send the new window size to AntTweakBar
-  TwWindowSize(width, height);
-  // Set aspect for all cameras
-  s.camera.m_aspect = (double)width/(double)height;
-  for(auto & s : undo_stack)
-  {
-    s.camera.m_aspect = (double)width/(double)height;
-  }
-  for(auto & s : redo_stack)
-  {
-    s.camera.m_aspect = (double)width/(double)height;
-  }
-}
-
-void push_scene()
-{
-  using namespace igl;
-  using namespace std;
-  glMatrixMode(GL_PROJECTION);
-  glPushMatrix();
-  glLoadIdentity();
-  auto & camera = s.camera;
-  gluPerspective(camera.m_angle,camera.m_aspect,camera.m_near,camera.m_far);
-  glMatrixMode(GL_MODELVIEW);
-  glPushMatrix();
-  glLoadIdentity();
-  gluLookAt(
-    camera.eye()(0), camera.eye()(1), camera.eye()(2),
-    camera.at()(0), camera.at()(1), camera.at()(2),
-    camera.up()(0), camera.up()(1), camera.up()(2));
-}
-
-void pop_scene()
-{
-  glMatrixMode(GL_PROJECTION);
-  glPopMatrix();
-  glMatrixMode(GL_MODELVIEW);
-  glPopMatrix();
-}
-
-void pop_object()
-{
-  glPopMatrix();
-}
-
-// Scale and shift for object
-void push_object()
-{
-  glPushMatrix();
-  glScaled(2./bbd,2./bbd,2./bbd);
-  glTranslated(-mid(0,0),-mid(0,1),-mid(0,2));
-}
-
-// Set up double-sided lights
-void lights()
-{
-  using namespace std;
-  glEnable(GL_LIGHTING);
-  glLightModelf(GL_LIGHT_MODEL_TWO_SIDE,GL_TRUE);
-  glEnable(GL_LIGHT0);
-  glEnable(GL_LIGHT1);
-  float amb[4];
-  amb[0] = amb[1] = amb[2] = 0;
-  amb[3] = 1.0;
-  float diff[4] = {0.0,0.0,0.0,0.0};
-  diff[0] = diff[1] = diff[2] = (1.0 - 0/0.4);;
-  diff[3] = 1.0;
-  float zeros[4] = {0.0,0.0,0.0,0.0};
-  float pos[4];
-  copy(light_pos,light_pos+4,pos);
-  glLightfv(GL_LIGHT0,GL_AMBIENT,amb);
-  glLightfv(GL_LIGHT0,GL_DIFFUSE,diff);
-  glLightfv(GL_LIGHT0,GL_SPECULAR,zeros);
-  glLightfv(GL_LIGHT0,GL_POSITION,pos);
-  pos[0] *= -1;
-  pos[1] *= -1;
-  pos[2] *= -1;
-  glLightfv(GL_LIGHT1,GL_AMBIENT,amb);
-  glLightfv(GL_LIGHT1,GL_DIFFUSE,diff);
-  glLightfv(GL_LIGHT1,GL_SPECULAR,zeros);
-  glLightfv(GL_LIGHT1,GL_POSITION,pos);
-}
-
-const float back[4] = {30.0/255.0,30.0/255.0,50.0/255.0,0};
-void display()
-{
-  using namespace Eigen;
-  using namespace igl;
-  using namespace std;
-
-  glClearColor(back[0],back[1],back[2],0);
-  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
-  if(is_animating)
-  {
-    double t = (get_seconds() - animation_start_time)/ANIMATION_DURATION;
-    if(t > 1)
-    {
-      t = 1;
-      is_animating = false;
-    }
-    const Quaterniond q = animation_from_quat.slerp(t,animation_to_quat).normalized();
-    s.camera.orbit(q.conjugate());
-  }
-
-  glDisable(GL_LIGHTING);
-  lights();
-  push_scene();
-  glEnable(GL_DEPTH_TEST);
-  glDepthFunc(GL_LEQUAL);
-  glEnable(GL_NORMALIZE);
-  glEnable(GL_COLOR_MATERIAL);
-  glColorMaterial(GL_FRONT_AND_BACK,GL_AMBIENT_AND_DIFFUSE);
-  push_object();
-
-  // Draw the model
-  // Set material properties
-  glEnable(GL_COLOR_MATERIAL);
-  igl::opengl2::draw_mesh(V,F,N,C);
-
-  pop_object();
-
-  // Draw a nice floor
-  glPushMatrix();
-  const double floor_offset =
-    -2./bbd*(V.col(1).maxCoeff()-mid(1));
-  glTranslated(0,floor_offset,0);
-  const float GREY[4] = {0.5,0.5,0.6,1.0};
-  const float DARK_GREY[4] = {0.2,0.2,0.3,1.0};
-  igl::opengl2::draw_floor(GREY,DARK_GREY);
-  glPopMatrix();
-
-  pop_scene();
-
-  igl::opengl::report_gl_error();
-
-  TwDraw();
-  glutSwapBuffers();
-  if(is_animating)
-  {
-    glutPostRedisplay();
-  }
-}
-
-void mouse_wheel(int wheel, int direction, int mouse_x, int mouse_y)
-{
-  using namespace std;
-  using namespace igl;
-  using namespace Eigen;
-  GLint viewport[4];
-  glGetIntegerv(GL_VIEWPORT,viewport);
-  if(wheel == 0 && TwMouseMotion(mouse_x, viewport[3] - mouse_y))
-  {
-    static double mouse_scroll_y = 0;
-    const double delta_y = 0.125*direction;
-    mouse_scroll_y += delta_y;
-    TwMouseWheel(mouse_scroll_y);
-    return;
-  }
-  push_undo();
-  auto & camera = s.camera;
-  if(wheel==0)
-  {
-    // factor of zoom change
-    double s = (1.-0.01*direction);
-    //// FOV zoom: just widen angle. This is hardly ever appropriate.
-    //camera.m_angle *= s;
-    //camera.m_angle = min(max(camera.m_angle,1),89);
-    camera.push_away(s);
-  }else
-  {
-    // Dolly zoom:
-    camera.dolly_zoom((double)direction*1.0);
-  }
-}
-
-void mouse(int glutButton, int glutState, int mouse_x, int mouse_y)
-{
-  using namespace std;
-  using namespace Eigen;
-  using namespace igl;
-  bool tw_using = TwEventMouseButtonGLUT(glutButton,glutState,mouse_x,mouse_y);
-  switch(glutButton)
-  {
-    case GLUT_RIGHT_BUTTON:
-    case GLUT_LEFT_BUTTON:
-    {
-      switch(glutState)
-      {
-        case 1:
-          // up
-          glutSetCursor(GLUT_CURSOR_LEFT_ARROW);
-          is_rotating = false;
-          break;
-        case 0:
-          // down
-          if(!tw_using)
-          {
-            glutSetCursor(GLUT_CURSOR_CYCLE);
-            // collect information for trackball
-            is_rotating = true;
-            down_camera = s.camera;
-            down_x = mouse_x;
-            down_y = mouse_y;
-          }
-        break;
-      }
-      break;
-    }
-    // Scroll down
-    case 3:
-    {
-      mouse_wheel(0,-1,mouse_x,mouse_y);
-      break;
-    }
-    // Scroll up
-    case 4:
-    {
-      mouse_wheel(0,1,mouse_x,mouse_y);
-      break;
-    }
-    // Scroll left
-    case 5:
-    {
-      mouse_wheel(1,-1,mouse_x,mouse_y);
-      break;
-    }
-    // Scroll right
-    case 6:
-    {
-      mouse_wheel(1,1,mouse_x,mouse_y);
-      break;
-    }
-  }
-  glutPostRedisplay();
-}
-
-void mouse_drag(int mouse_x, int mouse_y)
-{
-  using namespace igl;
-  using namespace Eigen;
-
-  if(is_rotating)
-  {
-    glutSetCursor(GLUT_CURSOR_CYCLE);
-    Quaterniond q;
-    auto & camera = s.camera;
-    switch(rotation_type)
-    {
-      case ROTATION_TYPE_IGL_TRACKBALL:
-      {
-        // Rotate according to trackball
-        igl::trackball<double>(
-          width,
-          height,
-          2.0,
-          down_camera.m_rotation_conj.coeffs().data(),
-          down_x,
-          down_y,
-          mouse_x,
-          mouse_y,
-          q.coeffs().data());
-          break;
-      }
-      case ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP:
-      {
-        // Rotate according to two axis valuator with fixed up vector
-        two_axis_valuator_fixed_up(
-          width, height,
-          2.0,
-          down_camera.m_rotation_conj,
-          down_x, down_y, mouse_x, mouse_y,
-          q);
-        break;
-      }
-      default:
-        break;
-    }
-    camera.orbit(q.conjugate());
-  }else
-  {
-    TwEventMouseMotionGLUT(mouse_x, mouse_y);
-  }
-  glutPostRedisplay();
-}
-
-
-
-void initC(
-  const Eigen::MatrixXd & Z,
-  const int selected_col,
-  Eigen::MatrixXd & C)
-{
-  using namespace igl;
-  C.resize(Z.rows(),3);
-  const double min_z = Z.minCoeff();
-  const double max_z = Z.maxCoeff();
-  for(int r = 0;r<Z.rows();r++)
-  {
-    jet((Z(r,selected_col)-min_z)/(max_z-min_z),C(r,0),C(r,1),C(r,2));
-  }
-}
-
-void key(unsigned char key, int mouse_x, int mouse_y)
-{
-  using namespace std;
-  switch(key)
-  {
-    case '.':
-      selected_col = (selected_col+1)%Z.cols();
-      initC(Z,selected_col,C);
-      break;
-    case ',':
-      selected_col = (selected_col+Z.cols()-1)%Z.cols();
-      initC(Z,selected_col,C);
-      break;
-    // ESC
-    case char(27):
-      rebar.save(REBAR_NAME);
-    // ^C
-    case char(3):
-      exit(0);
-    default:
-      if(!TwEventKeyboardGLUT(key,mouse_x,mouse_y))
-      {
-        cout<<"Unknown key command: "<<key<<" "<<int(key)<<endl;
-      }
-  }
-
-  glutPostRedisplay();
-}
-
-int main(int argc, char * argv[])
-{
-  using namespace Eigen;
-  using namespace igl;
-  using namespace std;
-
-  // init mesh
-  string filename = "../shared/beast.obj";
-  string cfilename = "../shared/beast-xyz.dmat";
-  if(argc < 3)
-  {
-    cerr<<"Usage:"<<endl<<"    ./example input.obj color.dmat"<<endl;
-    cout<<endl<<"Opening default mesh..."<<endl;
-  }else
-  {
-    // Read and prepare mesh
-    filename = argv[1];
-    cfilename = argv[2];
-  }
-
-  // dirname, basename, extension and filename
-  string d,b,ext,f;
-  pathinfo(filename,d,b,ext,f);
-  // Convert extension to lower case
-  transform(ext.begin(), ext.end(), ext.begin(), ::tolower);
-  vector<vector<double > > vV,vN,vTC;
-  vector<vector<int > > vF,vFTC,vFN;
-  if(ext == "obj")
-  {
-    // Convert extension to lower case
-    if(!igl::readOBJ(filename,vV,vTC,vN,vF,vFTC,vFN))
-    {
-      return 1;
-    }
-  }else if(ext == "off")
-  {
-    // Convert extension to lower case
-    if(!igl::readOFF(filename,vV,vF,vN))
-    {
-      return 1;
-    }
-  }else if(ext == "wrl")
-  {
-    // Convert extension to lower case
-    if(!igl::readWRL(filename,vV,vF))
-    {
-      return 1;
-    }
-  //}else
-  //{
-  //  // Convert extension to lower case
-  //  MatrixXi T;
-  //  if(!igl::readMESH(filename,V,T,F))
-  //  {
-  //    return 1;
-  //  }
-  //  //if(F.size() > T.size() || F.size() == 0)
-  //  {
-  //    boundary_facets(T,F);
-  //  }
-  }
-  if(vV.size() > 0)
-  {
-    if(!list_to_matrix(vV,V))
-    {
-      return 1;
-    }
-    polygon_mesh_to_triangle_mesh(vF,F);
-  }
-  if(!readDMAT(cfilename,Z))
-  {
-    return 1;
-  }
-
-  // Compute normals, centroid, colors, bounding box diagonal
-  per_vertex_normals(V,F,N);
-  mid = 0.5*(V.colwise().maxCoeff() + V.colwise().minCoeff());
-  bbd = (V.colwise().maxCoeff() - V.colwise().minCoeff()).maxCoeff();
-  initC(Z,selected_col,C);
-
-  // Init glut
-  glutInit(&argc,argv);
-
-  if( !TwInit(TW_OPENGL, NULL) )
-  {
-    // A fatal error occured
-    fprintf(stderr, "AntTweakBar initialization failed: %s\n", TwGetLastError());
-    return 1;
-  }
-  // Create a tweak bar
-  rebar.TwNewBar("TweakBar");
-  rebar.TwAddVarRW("camera_rotation", TW_TYPE_QUAT4D,
-    s.camera.m_rotation_conj.coeffs().data(), "open readonly=true");
-  s.camera.push_away(3);
-  s.camera.dolly_zoom(25-s.camera.m_angle);
-  TwType RotationTypeTW = igl::anttweakbar::ReTwDefineEnumFromString("RotationType",
-    "igl_trackball,two-a...-fixed-up");
-  rebar.TwAddVarCB( "rotation_type", RotationTypeTW,
-    set_rotation_type,get_rotation_type,NULL,"keyIncr=] keyDecr=[");
-  rebar.load(REBAR_NAME);
-
-  glutInitDisplayString("rgba depth double samples>=8 ");
-  glutInitWindowSize(glutGet(GLUT_SCREEN_WIDTH)/2.0,glutGet(GLUT_SCREEN_HEIGHT));
-  glutCreateWindow("colored-mesh");
-  glutDisplayFunc(display);
-  glutReshapeFunc(reshape);
-  glutKeyboardFunc(key);
-  glutMouseFunc(mouse);
-  glutMotionFunc(mouse_drag);
-  glutPassiveMotionFunc(
-    [](int x, int y)
-    {
-      TwEventMouseMotionGLUT(x,y);
-      glutPostRedisplay();
-    });
-  static std::function<void(int)> timer_bounce;
-  auto timer = [] (int ms) {
-    timer_bounce(ms);
-  };
-  timer_bounce = [&] (int ms) {
-    glutTimerFunc(ms, timer, ms);
-    glutPostRedisplay();
-  };
-  glutTimerFunc(500, timer, 500);
-
-  glutMainLoop();
-  return 0;
-}

examples/components/Makefile

@@ -1,33 +0,0 @@
-.PHONY: all
-
-# Shared flags etc.
-include ../Makefile.conf
-LIBIGL_LIB+=-liglembree 
-
-all: obj example
-
-.PHONY: example
-
-CFLAGS+=-g -std=c++11
-
-INC=$(LIBIGL_INC) $(ANTTWEAKBAR_INC) $(EIGEN3_INC) $(GLUT_INC) $(EMBREE_INC)
-LIB=$(OPENGL_LIB) $(GLUT_LIB) $(ANTTWEAKBAR_LIB) $(LIBIGL_LIB) $(EMBREE_LIB)
-
-CPP_FILES=$(wildcard ./*.cpp)
-OBJ_FILES=$(addprefix obj/,$(notdir $(CPP_FILES:.cpp=.o))) 
-
-example: obj $(OBJ_FILES)
-	g++ $(OPENMP) $(AFLAGS) $(CFLAGS) -o example $(OBJ_FILES) $(LIB)
-
-obj:
-	mkdir -p obj
-
-obj/%.o: %.cpp
-	g++ $(OPENMP) $(AFLAGS) $(CFLAGS) -c $< -o $@ $(INC)
-
-obj/%.o: %.cpp %.h
-	g++ $(OPENMP) $(AFLAGS) $(CFLAGS) -c $< -o $@ $(INC)
-
-clean:
-	rm -f $(OBJ_FILES)
-	rm -f example

examples/components/example.cpp

@@ -1,1095 +0,0 @@
-#include <igl/C_STR.h>
-#include <igl/Camera.h>
-#include <igl/REDRUM.h>
-#include <igl/components.h>
-#include <igl/opengl/create_shader_program.h>
-#include <igl/opengl2/draw_floor.h>
-#include <igl/get_seconds.h>
-#include <igl/hsv_to_rgb.h>
-#include <igl/opengl/init_render_to_texture.h>
-#include <igl/jet.h>
-#include <igl/per_face_normals.h>
-#include <igl/randperm.h>
-#include <igl/read_triangle_mesh.h>
-#include <igl/opengl/report_gl_error.h>
-#include <igl/rgb_to_hsv.h>
-#include <igl/snap_to_canonical_view_quat.h>
-#include <igl/snap_to_fixed_up.h>
-#include <igl/trackball.h>
-#include <igl/two_axis_valuator_fixed_up.h>
-#include <igl/write_triangle_mesh.h>
-#include <igl/anttweakbar/ReAntTweakBar.h>
-
-#include <Eigen/Core>
-#include <Eigen/Geometry>
-
-#ifdef __APPLE__
-#include <GLUT/glut.h>
-#else
-#include <GL/glut.h>
-#endif
-
-#ifndef GLUT_WHEEL_UP
-#define GLUT_WHEEL_UP    3
-#endif
-#ifndef GLUT_WHEEL_DOWN
-#define GLUT_WHEEL_DOWN  4
-#endif
-#ifndef GLUT_WHEEL_RIGHT
-#define GLUT_WHEEL_RIGHT 5
-#endif
-#ifndef GLUT_WHEEL_LEFT
-#define GLUT_WHEEL_LEFT  6
-#endif
-#ifndef GLUT_ACTIVE_COMMAND
-#define GLUT_ACTIVE_COMMAND 8
-#endif
-
-#include <ctime>
-#include <string>
-#include <vector>
-#include <stack>
-#include <iostream>
-
-int cc_hover = -1;
-
-Eigen::MatrixXd V;
-Eigen::VectorXd Vmid,Vmin,Vmax;
-double bbd = 1.0;
-Eigen::MatrixXi F;
-Eigen::VectorXi CC;
-Eigen::MatrixXd N;
-struct State
-{
-  igl::Camera camera;
-  Eigen::VectorXf I;
-  Eigen::Matrix<GLubyte,Eigen::Dynamic,Eigen::Dynamic,Eigen::RowMajor> selected;
-  GLuint mask_id;
-} s;
-std::string out_filename;
-
-GLuint pick_tex = 0;
-GLuint pick_fbo = 0;
-GLuint pick_dfbo = 0;
-
-// See README for descriptions
-enum RotationType
-{
-  ROTATION_TYPE_IGL_TRACKBALL = 0,
-  ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP = 1,
-  NUM_ROTATION_TYPES = 2,
-} rotation_type;
-
-enum CenterType
-{
-  CENTER_TYPE_ORBIT = 0,
-  CENTER_TYPE_FPS  = 1,
-  NUM_CENTER_TYPES = 2,
-} center_type = CENTER_TYPE_ORBIT;
-
-
-std::stack<State> undo_stack;
-std::stack<State> redo_stack;
-
-bool wireframe_visible = false;
-bool fill_visible = true;
-
-bool is_rotating = false;
-int down_x,down_y;
-igl::Camera down_camera;
-
-bool is_animating = false;
-double animation_start_time = 0;
-double ANIMATION_DURATION = 0.5;
-Eigen::Quaterniond animation_from_quat;
-Eigen::Quaterniond animation_to_quat;
-
-int width,height;
-Eigen::Vector4f light_pos(-0.1,-0.1,0.9,0);
-
-#define REBAR_NAME "temp.rbr"
-igl::anttweakbar::ReTwBar rebar;
-
-// Forward
-void init_components();
-void init_relative();
-
-void push_undo()
-{
-  undo_stack.push(s);
-  // Clear
-  redo_stack = std::stack<State>();
-}
-
-void TW_CALL set_rotation_type(const void * value, void * clientData)
-{
-  using namespace Eigen;
-  using namespace std;
-  using namespace igl;
-  const RotationType old_rotation_type = rotation_type;
-  rotation_type = *(const RotationType *)(value);
-  if(rotation_type == ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP &&
-    old_rotation_type != ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP)
-  {
-    animation_from_quat = s.camera.m_rotation_conj;
-    snap_to_fixed_up(animation_from_quat,animation_to_quat);
-    // start animation
-    animation_start_time = get_seconds();
-    is_animating = true;
-  }
-}
-void TW_CALL get_rotation_type(void * value, void *clientData)
-{
-  RotationType * rt = (RotationType *)(value);
-  *rt = rotation_type;
-}
-
-void reshape(int width, int height)
-{
-  ::width = width;
-  ::height = height;
-  glViewport(0,0,width,height);
-  // Send the new window size to AntTweakBar
-  TwWindowSize(width, height);
-  s.camera.m_aspect = (double)width/(double)height;
-  igl::opengl::init_render_to_texture(width,height, pick_tex, pick_fbo, pick_dfbo);
-  igl::opengl::report_gl_error("init_render_to_texture: ");
-  glutPostRedisplay();
-}
-
-void push_scene()
-{
-  using namespace igl;
-  using namespace std;
-  glMatrixMode(GL_PROJECTION);
-  glPushMatrix();
-  glLoadIdentity();
-  auto & camera = s.camera;
-  glMultMatrixd(camera.projection().data());
-  glMatrixMode(GL_MODELVIEW);
-  glPushMatrix();
-  glLoadIdentity();
-  gluLookAt(
-    camera.eye()(0), camera.eye()(1), camera.eye()(2),
-    camera.at()(0), camera.at()(1), camera.at()(2),
-    camera.up()(0), camera.up()(1), camera.up()(2));
-  glScaled(2./bbd,2./bbd,2./bbd);
-  glTranslated(-Vmid(0),-Vmid(1),-Vmid(2));
-}
-
-void pop_scene()
-{
-  glMatrixMode(GL_PROJECTION);
-  glPopMatrix();
-  glMatrixMode(GL_MODELVIEW);
-  glPopMatrix();
-}
-
-void draw_mesh(
-  const Eigen::MatrixXd & V,
-  const Eigen::MatrixXi & F,
-  const Eigen::MatrixXd & N,
-  const Eigen::VectorXf & S,
-  const GLuint & S_loc)
-{
-  using namespace Eigen;
-  using namespace std;
-  static Matrix<float,Dynamic,3,RowMajor> VR,NR;
-  static Matrix<int,Dynamic,3,RowMajor> FR;
-  static Matrix<float,Dynamic,1,ColMajor> SR;
-  static GLuint ibo,vbo,sbo,nbo;
-  static bool scene_dirty = true;
-  if(scene_dirty)
-  {
-    VR.resize(F.rows()*3,3);
-    NR.resize(F.rows()*3,3);
-    SR.resize(F.rows()*3,1);
-    FR.resize(F.rows(),3);
-    for(int f = 0;f<F.rows();f++)
-    {
-      for(int c = 0;c<3;c++)
-      {
-        VR.row(3*f+c) = V.row(F(f,c)).cast<float>();
-        SR(3*f+c) = S(F(f,c));
-        NR.row(3*f+c) = N.row(f).cast<float>();
-        FR(f,c) = 3*f+c;
-      }
-    }
-
-    glGenBuffers(1,&ibo);
-    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER,ibo);
-    glBufferData(GL_ELEMENT_ARRAY_BUFFER,sizeof(GLuint)*FR.size(),FR.data(),GL_STATIC_DRAW);
-    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER,0);
-    glGenBuffers(1,&vbo);
-    glGenBuffers(1,&nbo);
-    glGenBuffers(1,&sbo);
-
-    glBindBuffer(GL_ARRAY_BUFFER,vbo);
-    glBufferData(GL_ARRAY_BUFFER,sizeof(float)*VR.size(),VR.data(),GL_STATIC_DRAW);
-    glBindBuffer(GL_ARRAY_BUFFER,nbo);
-    glBufferData(GL_ARRAY_BUFFER,sizeof(float)*NR.size(),NR.data(),GL_STATIC_DRAW);
-
-    glBindBuffer(GL_ARRAY_BUFFER,sbo);
-    glBufferData(GL_ARRAY_BUFFER,sizeof(float)*SR.size(),SR.data(),GL_STATIC_DRAW);
-    igl::opengl::report_gl_error("glBindBuffer: ");
-
-    scene_dirty = false;
-  }
-
-  glEnableClientState(GL_VERTEX_ARRAY);
-  glBindBuffer(GL_ARRAY_BUFFER,vbo);
-  glVertexPointer(3,GL_FLOAT,0,0);
-  glEnableClientState(GL_NORMAL_ARRAY);
-  glBindBuffer(GL_ARRAY_BUFFER,nbo);   
-  glNormalPointer(GL_FLOAT,0,0);
-
-  glBindBuffer(GL_ARRAY_BUFFER,sbo);   
-  glVertexAttribPointer(S_loc, 1, GL_FLOAT, GL_FALSE, 0, 0);
-  glEnableVertexAttribArray(S_loc);
-
-  glBindBuffer(GL_ELEMENT_ARRAY_BUFFER,ibo);
-  glDrawElements(GL_TRIANGLES,FR.size(),GL_UNSIGNED_INT,0);
-  glBindBuffer(GL_ARRAY_BUFFER,0);
-}
-
-// Set up double-sided lights
-void lights()
-{
-  using namespace std;
-  using namespace Eigen;
-  glEnable(GL_LIGHTING);
-  glLightModelf(GL_LIGHT_MODEL_TWO_SIDE,GL_TRUE);
-  glEnable(GL_LIGHT0);
-  float WHITE[4] = {1,1,1,1.};
-  float BLACK[4] = {0.,0.,0.,1.};
-  Vector4f pos = light_pos;
-  glLightfv(GL_LIGHT0,GL_AMBIENT,BLACK);
-  glLightfv(GL_LIGHT0,GL_DIFFUSE,WHITE);
-  glLightfv(GL_LIGHT0,GL_SPECULAR,BLACK);
-  glLightfv(GL_LIGHT0,GL_POSITION,pos.data());
-  //glEnable(GL_LIGHT1);
-  //pos(0) *= -1;
-  //pos(1) *= -1;
-  //pos(2) *= -1;
-  //glLightfv(GL_LIGHT1,GL_AMBIENT,BLACK);
-  //glLightfv(GL_LIGHT1,GL_DIFFUSE,NEAR_BLACK);
-  //glLightfv(GL_LIGHT1,GL_SPECULAR,BLACK);
-  //glLightfv(GL_LIGHT1,GL_POSITION,pos.data());
-}
-
-template <int Rows, int Cols>
-GLuint generate_1d_texture(
-  const Eigen::Matrix<GLubyte,Rows,Cols,Eigen::RowMajor> & colors)
-{
-  assert(colors.cols() == 3 && "Seems colors.cols() must be 3");
-  GLuint tex_id = 0;
-  glGenTextures(1,&tex_id);
-  glBindTexture(GL_TEXTURE_1D,tex_id);
-  glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
-  glTexImage1D(GL_TEXTURE_1D, 0, colors.cols(),colors.rows(),
-    0,GL_RGB, GL_UNSIGNED_BYTE,
-    colors.data());
-  igl::opengl::report_gl_error("glTexImage1D: ");
-  glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, GL_CLAMP);
-  glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_WRAP_T, GL_CLAMP);
-  glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER,GL_NEAREST);
-  igl::opengl::report_gl_error("texture: ");
-  return tex_id;
-}
- 
-GLuint color_shader(const size_t max_ids, GLuint & scalar_loc, GLuint & tex_id)
-{
-  std::string vertex_shader = R"(
-#version 120
-attribute float scalar_in;
-varying float scalar_out;
-void main()
-{
-  scalar_out = scalar_in;
-  gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;
-}
-)";
-  std::string fragment_shader = R"(
-#version 120
-varying float scalar_out;
-uniform float cmin;
-uniform float cmax;
-uniform sampler1D color_map;
-void main()
-{
-  float scalar_normalized = max(min((scalar_out-cmin)/(cmax-cmin),1.0),0.0);
-  gl_FragColor = texture1D(color_map,scalar_normalized);
-}
-)";
-  Eigen::Matrix<GLubyte,Eigen::Dynamic,3,Eigen::RowMajor> colors(max_ids,3);
-  for(size_t id = 0;id<max_ids;id++)
-  {
-    size_t index = id;
-    size_t re = (index)%(256*256);
-    colors(id,0) = (index-re)/(256*256);
-    index = re;
-    re = index%(256);
-    colors(id,1) = (index-re)/(256);
-    colors(id,2) = re;
-  }
-  tex_id = generate_1d_texture(colors);
-  return igl::opengl::create_shader_program(
-    vertex_shader.c_str(), 
-    fragment_shader.c_str(),
-    {{"scalar_in",scalar_loc}}
-    );
-}
-
-
-void display()
-{
-  using namespace igl;
-  using namespace std;
-  using namespace Eigen;
-  glClearColor(0.8,0.8,0.8,0);
-  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
-  if(is_animating)
-  {
-    double t = (get_seconds() - animation_start_time)/ANIMATION_DURATION;
-    if(t > 1)
-    {
-      t = 1;
-      is_animating = false;
-    }
-    Quaterniond q = animation_from_quat.slerp(t,animation_to_quat).normalized();
-    auto & camera = s.camera;
-    switch(center_type)
-    {
-      default:
-      case CENTER_TYPE_ORBIT:
-        camera.orbit(q.conjugate());
-        break;
-      case CENTER_TYPE_FPS:
-        camera.turn_eye(q.conjugate());
-        break;
-    }
-  }
-
-  glEnable(GL_DEPTH_TEST);
-  glEnable(GL_NORMALIZE);
-  lights();
-  push_scene();
-
-
-  const auto & color_components_shader = [](
-     const GLuint scalar_loc,
-     GLuint & tex_id)->GLuint
-  {
-  std::string vertex_shader = R"(
-#version 120
-attribute float scalar_in;
-varying vec3 normal;
-varying float scalar_out;
-void main()
-{
-  gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;
-  normal = normalize(gl_NormalMatrix * gl_Normal);
-  scalar_out = scalar_in;
-}
-)";
-  std::string fragment_shader = R"(
-#version 120
-varying vec3 normal;
-varying float scalar_out;
-uniform float cmin;
-uniform float cmax;
-uniform float cc_hover;
-uniform sampler1D color_map;
-uniform sampler1D selected_mask;
-void main()
-{
-  float scalar_normalized = max(min((scalar_out-cmin)/(cmax-cmin),1.0),0.0);
-  vec4 texture_color = texture1D(color_map,scalar_normalized);
-  bool is_selected = texture1D(selected_mask,scalar_normalized).x > 0.5;
-  const vec4 selected_color = vec4(1,0.2,0.2,1);
-  if(scalar_out==cc_hover)
-  {
-    texture_color = 0.5*(texture_color + selected_color);
-  }
-  if(is_selected)
-  {
-    texture_color = selected_color;
-  }
-  const float num_lights = 1.0;
-  vec4 diffuse = (1.0/num_lights)*(gl_LightSource[0].diffuse);
-  vec4 ambient = vec4(0,0,0,0);
-  ambient += (1.0/num_lights)*(gl_FrontMaterial.ambient * gl_LightSource[0].ambient);
-  ambient += (1.0/num_lights)*(gl_LightModel.ambient * gl_FrontMaterial.ambient);
-  vec4 color = ambient;
-  // Phong
-  vec3 lightDir = normalize(vec3(gl_LightSource[0].position));
-  vec3 halfVector = gl_LightSource[0].halfVector.xyz;
-  vec3 n = normalize(normal);
-  float NdotL = max(abs(dot(n.xyz,lightDir)), 0.0);  
-  vec4 specular = vec4(0.0,0.0,0.0,0.0);
-  if (NdotL > 0.0) {
-      color += diffuse * NdotL;
-      vec3 halfV = normalize(halfVector);
-      float NdotHV = max(abs(dot(n,halfV)),0.0);
-      specular += gl_FrontMaterial.specular * gl_LightSource[0].specular * pow(NdotHV, gl_FrontMaterial.shininess);
-  }
-  gl_FragColor = color * texture_color + specular;
-}
-
-)";
-
-    typedef Matrix<GLubyte,64,3,RowMajor> Matrix64_3_R_ubyte;
-    typedef Matrix<float,64,3,RowMajor> Matrix64_3_R_float;
-    Matrix64_3_R_ubyte colors;
-    {
-      Matrix64_3_R_float rgb = (Matrix64_3_R_ubyte()<<
-        255,   0,   0,
-        255,  24,   0,
-        255,  48,   0,
-        255,  72,   0,
-        255,  96,   0,
-        255, 120,   0,
-        255, 143,   0,
-        255, 167,   0,
-        255, 191,   0,
-        255, 215,   0,
-        255, 239,   0,
-        247, 255,   0,
-        223, 255,   0,
-        199, 255,   0,
-        175, 255,   0,
-        151, 255,   0,
-        128, 255,   0,
-        104, 255,   0,
-         80, 255,   0,
-         56, 255,   0,
-         32, 255,   0,
-          8, 255,   0,
-          0, 255,  16,
-          0, 255,  40,
-          0, 255,  64,
-          0, 255,  88,
-          0, 255, 112,
-          0, 255, 135,
-          0, 255, 159,
-          0, 255, 183,
-          0, 255, 207,
-          0, 255, 231,
-          0, 255, 255,
-          0, 231, 255,
-          0, 207, 255,
-          0, 183, 255,
-          0, 159, 255,
-          0, 135, 255,
-          0, 112, 255,
-          0,  88, 255,
-          0,  64, 255,
-          0,  40, 255,
-          0,  16, 255,
-          8,   0, 255,
-         32,   0, 255,
-         56,   0, 255,
-         80,   0, 255,
-        104,   0, 255,
-        128,   0, 255,
-        151,   0, 255,
-        175,   0, 255,
-        199,   0, 255,
-        223,   0, 255,
-        247,   0, 255,
-        255,   0, 239,
-        255,   0, 215,
-        255,   0, 191,
-        255,   0, 167,
-        255,   0, 143,
-        255,   0, 120,
-        255,   0,  96,
-        255,   0,  72,
-        255,   0,  48,
-        255,   0,  24).finished().cast<float>()/255.f;
-
-      Matrix64_3_R_float H;
-      rgb_to_hsv(rgb,H);
-      H.col(1) *= 0.1;
-      H.col(2) = (H.col(2).array() + 0.1*(1.-H.col(2).array())).eval();
-      hsv_to_rgb(H,rgb);
-      colors = (rgb*255.).cast<GLubyte>();
-    }
-
-    tex_id = generate_1d_texture(colors);
-
-    GLuint prog_id = igl::opengl::create_shader_program(
-      vertex_shader.c_str(), 
-      fragment_shader.c_str(),
-      {{"scalar_in",scalar_loc}}
-      );
-    igl::opengl::report_gl_error("create_shader_program: ");
-    return prog_id;
-  };
-  static GLuint scalar_loc = 1;
-  static GLuint tex_id = 0;
-  static GLuint color_components_prog = 
-    color_components_shader(scalar_loc,tex_id);
-
-  // Set material properties
-  glEnable(GL_COLOR_MATERIAL);
-  glColorMaterial(GL_FRONT_AND_BACK,GL_AMBIENT_AND_DIFFUSE);
-  glMaterialfv(GL_FRONT_AND_BACK,GL_SPECULAR,(const GLfloat[]){1,1,1,1});
-  if(wireframe_visible)
-  {
-    glPolygonMode(GL_FRONT_AND_BACK,GL_LINE);
-    if(fill_visible)
-    {
-      glColor3f(0,0,0);
-      glUseProgram(0);
-      draw_mesh(V,F,N,s.I,scalar_loc);
-    }else
-    {
-      glUseProgram(color_components_prog);
-      igl::opengl::report_gl_error("UseProgram: ");
-      draw_mesh(V,F,N,s.I,scalar_loc);
-    }
-  }
-
-  glPolygonMode(GL_FRONT_AND_BACK,GL_FILL);
-
-  glPushAttrib(GL_ALL_ATTRIB_BITS);
-  glUseProgram(color_components_prog);
-    igl::opengl::report_gl_error("use: ");
-  glUniform1f(glGetUniformLocation(color_components_prog,"cmin"),s.I.minCoeff());
-  glUniform1f(glGetUniformLocation(color_components_prog,"cmax"),s.I.maxCoeff());
-  //glUniform1f(glGetUniformLocation(color_components_prog,"cc_selected"),cc_selected);
-  glUniform1f(glGetUniformLocation(color_components_prog,"cc_hover"),cc_hover);
-  glActiveTexture(GL_TEXTURE0);
-  glBindTexture(GL_TEXTURE_1D, tex_id);
-  glUniform1i(glGetUniformLocation(color_components_prog,"color_map"),0);
-  glActiveTexture(GL_TEXTURE1);
-  glBindTexture(GL_TEXTURE_1D, s.mask_id);
-  glUniform1i(glGetUniformLocation(color_components_prog,"selected_mask"),1);
-
-    igl::opengl::report_gl_error("unif: ");
-  if(fill_visible)
-  {
-    glEnable(GL_POLYGON_OFFSET_FILL); // Avoid Stitching!
-    glPolygonOffset(1.0, 0);
-  }
-  draw_mesh(V,F,N,s.I,scalar_loc);
-  glPopAttrib();
-  glUseProgram(0);
-
-  // Draw a nice floor
-  glPushMatrix();
-  const double floor_offset =
-    -2./bbd*(V.col(1).maxCoeff()-Vmid(1));
-  glTranslated(0,floor_offset,0);
-  const float GREY[4] = {0.5,0.5,0.6,1.0};
-  const float DARK_GREY[4] = {0.2,0.2,0.3,1.0};
-  igl::opengl2::draw_floor(GREY,DARK_GREY);
-  glPopMatrix();
-
-  pop_scene();
-
-  TwDraw();
-  glutSwapBuffers();
-  if(is_animating)
-  {
-    glutPostRedisplay();
-  }
-}
-
-void mouse_wheel(int wheel, int direction, int mouse_x, int mouse_y)
-{
-  using namespace std;
-  using namespace igl;
-  using namespace Eigen;
-  GLint viewport[4];
-  glGetIntegerv(GL_VIEWPORT,viewport);
-  if(wheel == 0 && TwMouseMotion(mouse_x, viewport[3] - mouse_y))
-  {
-    static double mouse_scroll_y = 0;
-    const double delta_y = 0.125*direction;
-    mouse_scroll_y += delta_y;
-    TwMouseWheel(mouse_scroll_y);
-    return;
-  }
-
-  auto & camera = s.camera;
-  switch(center_type)
-  {
-    case CENTER_TYPE_ORBIT:
-      if(wheel==0)
-      {
-        // factor of zoom change
-        double s = (1.-0.01*direction);
-        //// FOV zoom: just widen angle. This is hardly ever appropriate.
-        //camera.m_angle *= s;
-        //camera.m_angle = min(max(camera.m_angle,1),89);
-        camera.push_away(s);
-      }else
-      {
-        // Dolly zoom:
-        camera.dolly_zoom((double)direction*1.0);
-      }
-      break;
-    default:
-    case CENTER_TYPE_FPS:
-      // Move `eye` and `at`
-      camera.dolly((wheel==0?Vector3d(0,0,1):Vector3d(-1,0,0))*0.1*direction);
-      break;
-  }
-  glutPostRedisplay();
-}
-
-bool pick(const int x, const int y, int & cc_selected)
-{
-  using namespace Eigen;
-  using namespace igl;
-  using namespace std;
-  static GLuint scalar_loc = 1;
-  static GLuint tex_id = 0;
-  static const size_t max_ids = s.I.maxCoeff()+1;
-  static GLuint color_shader_prog = color_shader(max_ids,scalar_loc,tex_id);
-  const int pick_s = 0;
-  const int pick_w = pick_s;
-  GLint old_vp[4];
-  glGetIntegerv(GL_VIEWPORT,old_vp);
-  const double pick_ratio = double(pick_w)/double(old_vp[2]);
-  // ceil, cause might otherwise round down to 0
-  const int pick_h = ceil(double(old_vp[3])*pick_ratio);
-  glViewport(
-    x-pick_w,
-    old_vp[3]-y-pick_h,2*pick_w+1,2*pick_h+1);
-  glMatrixMode(GL_PROJECTION);
-  Matrix4d proj;
-  glGetDoublev(GL_PROJECTION_MATRIX,proj.data());
-  glPushMatrix();
-  glLoadIdentity();
-  gluPickMatrix(
-    x,
-    old_vp[3]-y, 
-    pick_w*2+1,
-    pick_h*2+1,
-    old_vp);
-  glMultMatrixd(proj.data());
-  glMatrixMode(GL_MODELVIEW);
-  // Activate color shader
-  glUseProgram(color_shader_prog);
-  glBindFramebufferEXT(GL_FRAMEBUFFER_EXT,pick_fbo);
-  glBindRenderbufferEXT(GL_RENDERBUFFER_EXT,pick_dfbo);
-  // Clear screen
-  glClearColor(0,0,0,0);
-  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
-  glPushAttrib(GL_ALL_ATTRIB_BITS);
-  glEnable(GL_TEXTURE_1D);
-  glBindTexture(GL_TEXTURE_1D, tex_id);
-  glUniform1f(glGetUniformLocation(color_shader_prog,"cmin"),s.I.minCoeff());
-  glUniform1f(glGetUniformLocation(color_shader_prog,"cmax"),s.I.maxCoeff());
-  draw_mesh(V,F,N,s.I,scalar_loc);
-  glPopAttrib();
-
-  glMatrixMode(GL_PROJECTION);
-  glPopMatrix();
-  glMatrixMode(GL_MODELVIEW);
-  glViewport(old_vp[0],old_vp[1],old_vp[2],old_vp[3]);
-
-  Matrix<GLubyte,1,4> pixel;
-  glReadPixels(x,old_vp[3]-y,1,1,GL_RGBA,GL_UNSIGNED_BYTE,pixel.data());
-
-  glUseProgram(0);
-  glBindFramebufferEXT(GL_FRAMEBUFFER_EXT,0);
-  glBindRenderbufferEXT(GL_RENDERBUFFER_EXT,0);
-
-  if(pixel(3) == 0)
-  {
-    cc_selected = -1;
-    return false;
-  }
-  cc_selected = pixel(0)*256*256+pixel(1)*256+pixel(2);
-  return true;
-}
-
-void regenerate_mask()
-{
-  if(glIsTexture(s.mask_id))
-  {
-    glDeleteTextures(1,&s.mask_id);
-  }
-  s.mask_id = generate_1d_texture(s.selected);
-}
-
-void mouse(int glutButton, int glutState, int mouse_x, int mouse_y)
-{
-  using namespace std;
-  using namespace Eigen;
-  using namespace igl;
-  bool tw_using = TwEventMouseButtonGLUT(glutButton,glutState,mouse_x,mouse_y);
-  int mod = glutGetModifiers();
-  switch(glutButton)
-  {
-    case GLUT_RIGHT_BUTTON:
-    {
-      switch(glutState)
-      {
-        case 1:
-          // up
-          glutSetCursor(GLUT_CURSOR_INHERIT);
-          is_rotating = false;
-          break;
-        case 0:
-          glutSetCursor(GLUT_CURSOR_CYCLE);
-          // collect information for trackball
-          is_rotating = true;
-          down_camera = s.camera;
-          down_x = mouse_x;
-          down_y = mouse_y;
-        break;
-      }
-      break;
-    }
-    case GLUT_LEFT_BUTTON:
-    {
-      switch(glutState)
-      {
-        case 1:
-          // up
-          glutSetCursor(GLUT_CURSOR_INHERIT);
-          is_rotating = false;
-          break;
-        case 0:
-          if(!tw_using)
-          {
-            push_scene();
-            int cc_selected=-1;
-            if(pick(mouse_x,mouse_y,cc_selected))
-            {
-              push_undo();
-              if(!(mod & GLUT_ACTIVE_SHIFT))
-              {
-                s.selected.setConstant(0);
-              }
-              s.selected(cc_selected,0) = 255;
-              regenerate_mask();
-            }else
-            {
-              glutSetCursor(GLUT_CURSOR_CYCLE);
-              // collect information for trackball
-              is_rotating = true;
-              down_camera = s.camera;
-              down_x = mouse_x;
-              down_y = mouse_y;
-            }
-            pop_scene();
-          }
-        break;
-      }
-      break;
-    }
-    // Scroll down
-    case GLUT_WHEEL_DOWN:
-    {
-      mouse_wheel(0,-1,mouse_x,mouse_y);
-      break;
-    }
-    // Scroll up
-    case GLUT_WHEEL_UP:
-    {
-      mouse_wheel(0,1,mouse_x,mouse_y);
-      break;
-    }
-    // Scroll left
-    case GLUT_WHEEL_LEFT:
-    {
-      mouse_wheel(1,-1,mouse_x,mouse_y);
-      break;
-    }
-    // Scroll right
-    case GLUT_WHEEL_RIGHT:
-    {
-      mouse_wheel(1,1,mouse_x,mouse_y);
-      break;
-    }
-  }
-  glutPostRedisplay();
-}
-
-void mouse_move(int mouse_x, int mouse_y)
-{
-  using namespace igl;
-  using namespace std;
-  using namespace Eigen;
-  bool tw_using = TwMouseMotion(mouse_x,mouse_y);
-  push_scene();
-  pick(mouse_x,mouse_y,cc_hover);
-  pop_scene();
-  glutPostRedisplay();
-}
-
-void mouse_drag(int mouse_x, int mouse_y)
-{
-  using namespace igl;
-  using namespace std;
-  using namespace Eigen;
-  bool tw_using = TwMouseMotion(mouse_x,mouse_y);
-
-  if(is_rotating)
-  {
-    glutSetCursor(GLUT_CURSOR_CYCLE);
-    Quaterniond q;
-    auto & camera = s.camera;
-    switch(rotation_type)
-    {
-      case ROTATION_TYPE_IGL_TRACKBALL:
-      {
-        // Rotate according to trackball
-        igl::trackball<double>(
-          width,
-          height,
-          2.0,
-          down_camera.m_rotation_conj.coeffs().data(),
-          down_x,
-          down_y,
-          mouse_x,
-          mouse_y,
-          q.coeffs().data());
-          break;
-      }
-      case ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP:
-      {
-        // Rotate according to two axis valuator with fixed up vector
-        two_axis_valuator_fixed_up(
-          width, height,
-          2.0,
-          down_camera.m_rotation_conj,
-          down_x, down_y, mouse_x, mouse_y,
-          q);
-        break;
-      }
-      default:
-        break;
-    }
-    switch(center_type)
-    {
-      default:
-      case CENTER_TYPE_ORBIT:
-        camera.orbit(q.conjugate());
-        break;
-      case CENTER_TYPE_FPS:
-        camera.turn_eye(q.conjugate());
-        break;
-    }
-  }
-  glutPostRedisplay();
-}
-
-void init_relative()
-{
-  using namespace Eigen;
-  using namespace igl;
-  per_face_normals(V,F,N);
-  Vmax = V.colwise().maxCoeff();
-  Vmin = V.colwise().minCoeff();
-  Vmid = 0.5*(Vmax + Vmin);
-  bbd = (Vmax-Vmin).norm();
-}
-
-void init_components()
-{
-  using namespace Eigen;
-  using namespace igl;
-  using namespace std;
-  components(F,CC);
-  s.I = CC.cast<float>();
-  s.selected = Matrix<GLubyte,Dynamic,Dynamic>::Zero(s.I.maxCoeff()+1,3);
-  cout<<"s.selected: "<<s.selected.rows()<<endl;
-  regenerate_mask();
-}
-
-void undo()
-{
-  using namespace std;
-  if(!undo_stack.empty())
-  {
-    redo_stack.push(s);
-    s = undo_stack.top();
-    undo_stack.pop();
-  }
-  regenerate_mask();
-}
-
-void redo()
-{
-  using namespace std;
-  if(!redo_stack.empty())
-  {
-    undo_stack.push(s);
-    s = redo_stack.top();
-    redo_stack.pop();
-  }
-  regenerate_mask();
-}
-
-bool save(const std::string & out_filename)
-{
-  using namespace std;
-  using namespace igl;
-  if(write_triangle_mesh(out_filename,V,F))
-  {
-    cout<<GREENGIN("Saved mesh to `"<<out_filename<<"` successfully.")<<endl;
-    return true;
-  }else
-  {
-    cout<<REDRUM("Failed to save mesh to `"<<out_filename<<"`.")<<endl;
-    return false;
-  }
-}
-
-void TW_CALL saveCB(void * /*clientData*/)
-{
-  save(out_filename);
-}
-
-void key(unsigned char key, int mouse_x, int mouse_y)
-{
-  using namespace std;
-  using namespace Eigen;
-  using namespace igl;
-  int mod = glutGetModifiers();
-  switch(key)
-  {
-    // ESC
-    case char(27):
-      rebar.save(REBAR_NAME);
-    // ^C
-    case char(3):
-      exit(0);
-    case 'z':
-    case 'Z':
-      if(mod & GLUT_ACTIVE_COMMAND)
-      {
-        if(mod & GLUT_ACTIVE_SHIFT)
-        {
-          redo();
-        }else
-        {
-          undo();
-        }
-      }else
-      {
-        Quaterniond q;
-        snap_to_canonical_view_quat(s.camera.m_rotation_conj,1.0,q);
-        switch(center_type)
-        {
-          default:
-          case CENTER_TYPE_ORBIT:
-            s.camera.orbit(q.conjugate());
-            break;
-          case CENTER_TYPE_FPS:
-            s.camera.turn_eye(q.conjugate());
-            break;
-        }
-      }
-      break;
-    case 'u':
-        mouse_wheel(0, 1,mouse_x,mouse_y);
-        break;
-    case 'j':
-        mouse_wheel(0,-1,mouse_x,mouse_y);
-        break;
-    default:
-      if(!TwEventKeyboardGLUT(key,mouse_x,mouse_y))
-      {
-        cout<<"Unknown key command: "<<key<<" "<<int(key)<<endl;
-      }
-  }
-
-  glutPostRedisplay();
-}
-
-int main(int argc, char * argv[])
-{
-  using namespace std;
-  using namespace Eigen;
-  using namespace igl;
-  string filename = "../shared/truck.obj";
-  switch(argc)
-  {
-    case 3:
-      out_filename = argv[2];
-    case 2:
-      // Read and prepare mesh
-      filename = argv[1];
-      break;
-    default:
-      cerr<<"Usage:"<<endl<<"    ./example input.obj (output.obj)"<<endl;
-      cout<<endl<<"Opening default mesh..."<<endl;
-      break;
-  }
-
-  // print key commands
-  cout<<"[Click] and [drag]  Rotate model using trackball."<<endl;
-  cout<<"[Z,z]               Snap rotation to canonical view."<<endl;
-  cout<<"[Command+Z]         Undo."<<endl;
-  cout<<"[Shift+Command+Z]   Redo."<<endl;
-  cout<<"[^C,ESC]            Exit."<<endl;
-
-  read_triangle_mesh(filename,V,F);
-
-
-  // Init glut
-  glutInit(&argc,argv);
-  if( !TwInit(TW_OPENGL, NULL) )
-  {
-    // A fatal error occured
-    fprintf(stderr, "AntTweakBar initialization failed: %s\n", TwGetLastError());
-    return 1;
-  }
-  // Create a tweak bar
-  rebar.TwNewBar("bar");
-  TwDefine("bar label='Components' size='200 550' text=light alpha='200' color='68 68 68'");
-  rebar.TwAddVarRW("camera_rotation", TW_TYPE_QUAT4D,
-    s.camera.m_rotation_conj.coeffs().data(), "open readonly=true");
-  TwType RotationTypeTW = igl::anttweakbar::ReTwDefineEnumFromString("RotationType",
-    "igl_trackball,two-axis-valuator-fixed-up");
-  rebar.TwAddVarCB( "rotation_type", RotationTypeTW,
-    set_rotation_type,get_rotation_type,NULL,"keyIncr=] keyDecr=[");
-  TwType CenterTypeTW = igl::anttweakbar::ReTwDefineEnumFromString("CenterType","orbit,fps");
-  rebar.TwAddVarRW("center_type", CenterTypeTW,&center_type,
-    "keyIncr={ keyDecr=}");
-
-  rebar.TwAddVarRW("wireframe_visible",TW_TYPE_BOOLCPP,&wireframe_visible,"key=l");
-  rebar.TwAddVarRW("fill_visible",TW_TYPE_BOOLCPP,&fill_visible,"key=f");
-  if(out_filename != "")
-  {
-    rebar.TwAddButton("save",
-      saveCB,NULL,
-      C_STR("label='Save to `"<<out_filename<<"`' "<<
-      "key=s"));
-  }
-  rebar.load(REBAR_NAME);
-
-
-  animation_from_quat = Quaterniond(1,0,0,0);
-  s.camera.m_rotation_conj = animation_from_quat;
-  animation_start_time = get_seconds();
-
-  glutInitDisplayString( "rgba depth double samples>=8");
-  glutInitWindowSize(glutGet(GLUT_SCREEN_WIDTH)/2.0,glutGet(GLUT_SCREEN_HEIGHT)/2.0);
-  glutCreateWindow("components");
-  glutDisplayFunc(display);
-  glutReshapeFunc(reshape);
-  glutKeyboardFunc(key);
-  glutMouseFunc(mouse);
-  glutMotionFunc(mouse_drag);
-  glutPassiveMotionFunc(mouse_move);
-
-  init_components();
-  init_relative();
-  regenerate_mask();
-
-  std::cout<<"OpenGL version: "<<glGetString(GL_VERSION)<<std::endl;
-  glutMainLoop();
-
-  return 0;
-}

examples/convertmesh/Makefile

@@ -1,21 +0,0 @@
-.PHONY: all
-
-# Shared flags etc.
-include ../Makefile.conf
-
-all: convertmesh
-
-.PHONY: convertmesh
-
-INC=$(LIBIGL_INC) $(EIGEN3_INC) 
-LIB=$(LIBIGL_LIB) 
-OPTFLAGS+=-O3 -DNDEBUG $(OPENMP)
-
-convertmesh: convertmesh.o
-	g++ $(OPTFLAGS) $(AFLAGS) $(CFLAGS) $(LIB) -o convertmesh convertmesh.o 
-
-convertmesh.o: convertmesh.cpp
-	g++ $(OPTFLAGS) $(AFLAGS) $(CFLAGS) -c convertmesh.cpp -o convertmesh.o $(INC)
-clean:
-	rm -f convertmesh.o
-	rm -f convertmesh

examples/convertmesh/convertmesh.cpp

@@ -1,31 +0,0 @@
-#include <igl/read_triangle_mesh.h>
-#include <igl/write_triangle_mesh.h>
-#include <string>
-#include <iostream>
-int main(int argc, char * argv[])
-{
-  using namespace std;
-  using namespace Eigen;
-  using namespace igl;
-  MatrixXd V;
-  MatrixXi F;
-  string in,out;
-  switch(argc)
-  {
-    case 3:
-      in = argv[1];
-      out = argv[2];
-      break;
-    default:
-      cerr<<R"(
-USAGE:
-  convertmesh input.[mesh|obj|off|ply|stl|wrl] output.[mesh|obj|off|ply|stl|wrl]
-
-  Note: .ply and .stl outputs are binary.
-)";
-    return EXIT_FAILURE;
-  }
-  return 
-    read_triangle_mesh(in,V,F) && write_triangle_mesh(out,V,F,false) ? 
-    EXIT_SUCCESS : EXIT_FAILURE;
-}

examples/dmat/Makefile

@@ -1,21 +0,0 @@
-.PHONY: all
-
-# Shared flags etc.
-include ../Makefile.conf
-
-all: example
-
-.PHONY: example
-
-CFLAGS+=-g
-inc=$(LIBIGL_INC) $(EIGEN3_INC)
-lib=$(LIBIGL_LIB)
-
-example: example.o
-	g++ $(CFLAGS) -o example example.o $(lib)
-
-example.o: example.cpp
-	g++ $(CFLAGS) -c example.cpp -o example.o $(inc)
-clean:
-	rm -f example.o
-	rm -f example

examples/dmat/README

@@ -1,22 +0,0 @@
-This is a simple example program that shows how to use the readDMAT and
-writeDMAT functions of the igl library
-
-
-To Build:
-  make
-
-To Run:
-  ./example [input path] [output path]
-
-Example Run #1:
-  Issuing:
-    ./example example.dmat output.dmat
-    cat output.dmat
-  should produce:
-    3 2
-    1
-    4
-    2
-    5
-    3
-    6

examples/dmat/example.cpp

@@ -1,18 +0,0 @@
-#include <Eigen/Core>
-#include <igl/readDMAT.h>
-#include <igl/writeDMAT.h>
-using namespace igl;
-#include <cstdio>
-
-int main(int argc, char * argv[])
-{
-  if(argc <= 2)
-  {
-    printf("USAGE:\n  ./example [input path] [output path]\n");
-    return 1;
-  }
-  Eigen::MatrixXd M;
-  readDMAT(argv[1],M);
-  writeDMAT(argv[2],M);
-  return 0;
-}

examples/dmat/example.dmat

@@ -1,7 +0,0 @@
-3 2
-1
-4
-2
-5
-3
-6

examples/eigen-gotchas/Makefile

@@ -1,21 +0,0 @@
-.PHONY: all
-
-# Shared flags etc.
-include ../Makefile.conf
-
-all: example
-
-.PHONY: example
-
-CFLAGS+=-g
-INC=$(LIBIGL_INC) $(EIGEN3_INC)
-LIB=$(LIBIGL_LIB)
-
-example: example.o
-	g++ $(CFLAGS) -o example example.o $(LIB)
-
-example.o: example.cpp
-	g++ $(CFLAGS) -c example.cpp -o example.o $(INC)
-clean:
-	rm -f example.o
-	rm -f example

examples/eigen-gotchas/example.cpp

@@ -1,227 +0,0 @@
-// Make an effort to verify bugs/gotchas for column and row major
-//#define EIGEN_DEFAULT_TO_ROW_MAJOR
-
-#define EIGEN_YES_I_KNOW_SPARSE_MODULE_IS_NOT_STABLE_YET
-#define EIGEN_IM_MAD_AS_HELL_AND_IM_NOT_GOING_TO_TAKE_IT_ANYMORE
-#include <Eigen/Sparse>
-using namespace Eigen;
-
-#include <cstdio>
-#include <iostream>
-using namespace std;
-
-#include <igl/print_ijv.h>
-using namespace igl;
-
-#if EIGEN_VERSION_AT_LEAST(3,0,92)
-#  warning these gotchas have not been verified for your Eigen Version
-#else
-// Eigen fails to notice at compile time that the inneriterator used to loop
-// over the contents of a sparsematrix of type T is a different type
-//
-// http://www.alecjacobson.com/weblog/?p=2216
-void wrong_sparsematrix_inner_iterator_type()
-{
-  // Fill 10 by 10 matrix with 0.5*(1:10) along the diagonal
-  SparseMatrix<double> A(10,10);
-  A.reserve(10);
-  for(int i = 0;i<10;i++)
-  {
-    A.insert(i,i) = (double)i/2.0;
-  }
-  A.finalize();
-  cout<<"AIJV=["<<endl;print_ijv(A,1);cout<<endl<<"];"<<endl<<
-    "A=sparse(AIJV(:,1),AIJV(:,2),AIJV(:,3),"<<
-    A.rows()<<","<<A.cols()<<");"<<endl;
-
-  // Traverse A as *int*
-  for(int k = 0;k<A.outerSize();k++)
-  {
-    // Each entry seems to be cast to int and if it's cast to zero then it's as
-    // if it wasn't even there
-    for (SparseMatrix<int>::InnerIterator it(A,k); it; ++it)
-    {
-      printf("A(%d,%d) = %d\n",it.row(),it.col(),it.value());
-    }
-  }
-}
-
-// Eigen can't handle .transpose within expression on right hand side of =
-// operator
-//
-// Temporary solution: Never use Something.transpose() in expression. Always
-// first compute Something into a matrix:
-//   SparseMatrix S = Something;
-// then compute tranpose
-//   SparseMatrix ST = Something.transpose();
-// then continue
-void sparsematrix_transpose_in_rhs_aliasing()
-{
-  SparseMatrix<double> A(7,2);
-  A.reserve(4);
-  A.insert(0,0) = -0.5;
-  A.insert(2,0) = -0.5;
-  A.insert(4,1) = -0.5;
-  A.insert(6,1) = -0.5;
-  A.finalize();
-  cout<<"AIJV=["<<endl;print_ijv(A,1);cout<<endl<<"];"<<endl<<
-    "A=sparse(AIJV(:,1),AIJV(:,2),AIJV(:,3),"<<
-    A.rows()<<","<<A.cols()<<");"<<endl;
-
-  SparseMatrix<double> B(2,7);
-  B.reserve(4);
-  B.insert(0,0) = -0.5;
-  B.insert(0,2) = -0.5;
-  B.insert(1,4) = -0.5;
-  B.insert(1,6) = -0.5;
-  B.finalize();
-  cout<<"BIJV=["<<endl;print_ijv(B,1);cout<<endl<<"];"<<endl<<
-    "B=sparse(BIJV(:,1),BIJV(:,2),BIJV(:,3),"<<
-    B.rows()<<","<<B.cols()<<");"<<endl;
-
-  SparseMatrix<double> C;
-
-  // Should be empty but isn't
-  C = A-B.transpose();
-  cout<<"C = A - B.transpose();"<<endl;
-  cout<<"CIJV=["<<endl;print_ijv(C,1);cout<<endl<<"];"<<endl<<
-    "C=sparse(CIJV(:,1),CIJV(:,2),CIJV(:,3),"<<
-    C.rows()<<","<<C.cols()<<");"<<endl;
-
-  // Should be empty but isn't
-  C = A-B.transpose().eval();
-  cout<<"C = A - B.transpose().eval();"<<endl;
-  cout<<"CIJV=["<<endl;print_ijv(C,1);cout<<endl<<"];"<<endl<<
-    "C=sparse(CIJV(:,1),CIJV(:,2),CIJV(:,3),"<<
-    C.rows()<<","<<C.cols()<<");"<<endl;
-
-  // This works
-  SparseMatrix<double> BT = B.transpose();
-  C = A-BT;
-  cout<<"C = A - BT;"<<endl;
-  cout<<"CIJV=["<<endl;print_ijv(C,1);cout<<endl<<"];"<<endl<<
-    "C=sparse(CIJV(:,1),CIJV(:,2),CIJV(:,3),"<<
-    C.rows()<<","<<C.cols()<<");"<<endl;
-}
-
-// Eigen claims the sparseLLT can be constructed using a SparseMatrix but
-// at runtime crashes unless it is given exclusively the lower triangle
-// 
-// Temporary solution, replace:
-// SparseLLT<SparseMatrix<T> > A_LLT(A);
-// with:
-// SparseLLT<SparseMatrix<T> > A_LLT(A.template triangularView<Eigen::Lower>());
-//
-void sparsellt_needs_triangular_view()
-{
-  // Succeeds
-  SparseMatrix<double> A(2,2);
-  A.reserve(4);
-  A.insert(0,0) = 1;
-  A.insert(0,1) = -0.5;
-  A.insert(1,0) = -0.5;
-  A.insert(1,1) = 1;
-  A.finalize();
-  cout<<"AIJV=["<<endl;print_ijv(A,1);cout<<endl<<"];"<<endl<<
-    "A=sparse(AIJV(:,1),AIJV(:,2),AIJV(:,3),"<<
-    A.rows()<<","<<A.cols()<<");"<<endl;
-  SparseLLT<SparseMatrix<double> > A_LLT(A.triangularView<Eigen::Lower>());
-  SparseMatrix<double> A_L = A_LLT.matrixL();
-  cout<<"A_LIJV=["<<endl;print_ijv(A_L,1);cout<<endl<<"];"<<endl<<
-    "A_L=sparse(A_LIJV(:,1),A_LIJV(:,2),A_LIJV(:,3),"<<
-    A_L.rows()<<","<<A_L.cols()<<");"<<endl;
-
-  //Crashes
-  SparseMatrix<double> B(2,2);
-  B.reserve(4);
-  B.insert(0,0) = 1;
-  B.insert(0,1) = -0.5;
-  B.insert(1,0) = -0.5;
-  B.insert(1,1) = 1;
-  B.finalize();
-  cout<<"BIJV=["<<endl;print_ijv(B,1);cout<<endl<<"];"<<endl<<
-    "B=sparse(BIJV(:,1),BIJV(:,2),BIJV(:,3),"<<
-    B.rows()<<","<<B.cols()<<");"<<endl;
-  SparseLLT<SparseMatrix<double> > B_LLT(B);
-}
-
-void sparsematrix_nonzeros_after_expression()
-{
-  SparseMatrix<double> A(2,2);
-  A.reserve(4);
-  A.insert(0,0) = 1;
-  A.insert(0,1) = -0.5;
-  A.insert(1,0) = -0.5;
-  A.insert(1,1) = 1;
-  A.finalize();
-  cout<<"AIJV=["<<endl;print_ijv(A,1);cout<<endl<<"];"<<endl<<
-    "A=sparse(AIJV(:,1),AIJV(:,2),AIJV(:,3),"<<
-    A.rows()<<","<<A.cols()<<");"<<endl;
-  // Succeeds
-  SparseMatrix<double> AmA = A-A;
-  cout<<"(AmA).nonZeros(): "<<AmA.nonZeros()<<endl;
-  // Succeeds
-  cout<<"(A-A).eval().nonZeros(): "<<(A-A).eval().nonZeros()<<endl;
-  // Crashes
-  cout<<"(A-A).nonZeros(): "<<(A-A).nonZeros()<<endl;
-}
-
-// Eigen's SparseLLT's succeeded() method claims to return whether LLT
-// computation was successful. Instead it seems its value is meaningless
-//
-// Temporary solution: Check for presence NaNs in matrixL()
-// bool succeeded = (A_LLT.matrixL()*0).eval().nonZeros() == 0;
-void sparsellt_succeeded_is_meaningless()
-{
-  // Should succeed
-  SparseMatrix<double> A(2,2);
-  A.reserve(4);
-  A.insert(0,0) = 1;
-  A.insert(0,1) = -0.5;
-  A.insert(1,0) = -0.5;
-  A.insert(1,1) = 1;
-  A.finalize();
-  cout<<"AIJV=["<<endl;print_ijv(A,1);cout<<endl<<"];"<<endl<<
-    "A=sparse(AIJV(:,1),AIJV(:,2),AIJV(:,3),"<<
-    A.rows()<<","<<A.cols()<<");"<<endl;
-  SparseLLT<SparseMatrix<double> > A_LLT(A.triangularView<Eigen::Lower>());
-  cout<<"A_LLT.succeeded(): "<<(A_LLT.succeeded()?"TRUE":"FALSE")<<endl;
-  SparseMatrix<double> A_L = A_LLT.matrixL();
-  // See sparsematrix_nonzeros_after_expression
-  cout<<"(A_L*0).eval().nonZeros(): "<<(A_L*0).eval().nonZeros()<<endl;
-
-  cout<<"A_LIJV=["<<endl;print_ijv(A_L,1);cout<<endl<<"];"<<endl<<
-    "A_L=sparse(A_LIJV(:,1),A_LIJV(:,2),A_LIJV(:,3),"<<
-    A_L.rows()<<","<<A_L.cols()<<");"<<endl;
-
-  // Should not succeed
-  SparseMatrix<double> B(2,2);
-  B.reserve(4);
-  B.insert(0,0) = -1;
-  B.insert(0,1) = 0.5;
-  B.insert(1,0) = 0.5;
-  B.insert(1,1) = -1;
-  B.finalize();
-  cout<<"BIJV=["<<endl;print_ijv(B,1);cout<<endl<<"];"<<endl<<
-    "B=sparse(BIJV(:,1),BIJV(:,2),BIJV(:,3),"<<
-    B.rows()<<","<<B.cols()<<");"<<endl;
-  SparseLLT<SparseMatrix<double> > B_LLT(B.triangularView<Eigen::Lower>());
-  cout<<"B_LLT.succeeded(): "<<(B_LLT.succeeded()?"TRUE":"FALSE")<<endl;
-  SparseMatrix<double> B_L = B_LLT.matrixL();
-  // See sparsematrix_nonzeros_after_expression
-  cout<<"(B_L*0).eval().nonZeros(): "<<(B_L*0).eval().nonZeros()<<endl;
-  cout<<"B_LIJV=["<<endl;print_ijv(B_L,1);cout<<endl<<"];"<<endl<<
-    "B_L=sparse(B_LIJV(:,1),B_LIJV(:,2),B_LIJV(:,3),"<<
-    B_L.rows()<<","<<B_L.cols()<<");"<<endl;
-}
-#endif
-
-int main(int argc, char * argv[])
-{
-  //wrong_sparsematrix_inner_iterator_type();
-  //sparsematrix_transpose_in_rhs_aliasing();
-  //sparsellt_needs_triangular_view();
-  //sparsematrix_nonzeros_after_expression();
-  //sparsellt_succeeded_is_meaningless();
-  return 0;
-}

examples/embree/Makefile

@@ -1,22 +0,0 @@
-.PHONY: all
-
-# Shared flags etc.
-include ../Makefile.conf
-
-all: example
-
-.PHONY: example
-
-INC=$(LIBIGL_INC) $(ANTTWEAKBAR_INC) $(EIGEN3_INC) $(EMBREE_INC)
-LIB=$(OPENGL_LIB) $(GLUT_LIB) $(ANTTWEAKBAR_LIB) $(LIBIGL_LIB) $(EMBREE_LIB)
-
-CFLAGS+=-g
-
-example: example.o
-	g++ $(OPENMP) $(AFLAGS) $(CFLAGS) $(LIB) -o example example.o 
-
-example.o: example.cpp
-	g++ $(OPENMP) $(AFLAGS) $(CFLAGS) -c example.cpp -o example.o $(INC)
-clean:
-	rm -f example.o
-	rm -f example

examples/embree/example.cpp

@@ -1,481 +0,0 @@
-#include <igl/opengl/OpenGL_convenience.h>
-#include <igl/opengl2/draw_floor.h>
-#include <igl/opengl2/draw_mesh.h>
-#include <igl/normalize_row_lengths.h>
-#include <igl/per_face_normals.h>
-#include <igl/quat_to_mat.h>
-#include <igl/read_triangle_mesh.h>
-#include <igl/opengl/report_gl_error.h>
-#include <igl/trackball.h>
-#include <igl/opengl2/unproject.h>
-#include <igl/embree/EmbreeIntersector.h>
-
-#ifdef __APPLE__
-#  include <GLUT/glut.h>
-#else
-#  include <GL/glut.h>
-#endif
-#include <Eigen/Core>
-
-#include <vector>
-#include <iostream>
-
-// Width and height of window
-int width,height;
-// Rotation of scene
-float scene_rot[4] = {0,0,0,1};
-// information at mouse down
-float down_scene_rot[4] = {0,0,0,1};
-bool trackball_on = false;
-int down_mouse_x,down_mouse_y;
-// Position of light
-float light_pos[4] = {0.1,0.1,-0.9,0};
-// Vertex positions, normals, colors and centroid
-Eigen::MatrixXd V,N,C,mean;
-// Bounding box diagonal length
-double bbd;
-// Faces
-Eigen::MatrixXi F;
-// Embree intersection structure
-igl::embree::EmbreeIntersector ei;
-// Hits collected
-std::vector<igl::embree::Hit > hits;
-// Ray information, "projection screen" corners
-Eigen::Vector3f win_s,s,d,dir,NW,NE,SE,SW;
-// Textures and framebuffers for "projection screen"
-GLuint tex_id = 0, fbo_id = 0, dfbo_id = 0;
-
-// Initialize textures and framebuffers. Must be called if window changes
-// dimension
-void init_texture()
-{
-  using namespace igl;
-  using namespace std;
-  // Set up a "render-to-texture" frame buffer and texture combo
-  glDeleteTextures(1,&tex_id);
-  glDeleteFramebuffersEXT(1,&fbo_id);
-  glDeleteFramebuffersEXT(1,&dfbo_id);
-  // http://www.opengl.org/wiki/Framebuffer_Object_Examples#Quick_example.2C_render_to_texture_.282D.29
-  glGenTextures(1, &tex_id);
-  glBindTexture(GL_TEXTURE_2D, tex_id);
-  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
-  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
-  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-  //NULL means reserve texture memory, but texels are undefined
-  glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0, GL_BGRA, GL_UNSIGNED_BYTE, NULL);
-  glBindTexture(GL_TEXTURE_2D, 0);
-  //-------------------------
-  glGenFramebuffersEXT(1, &fbo_id);
-  glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo_id);
-  //Attach 2D texture to this FBO
-  glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, tex_id, 0);
-  glGenRenderbuffersEXT(1, &dfbo_id);
-  glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, dfbo_id);
-  glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT24, width, height);
-  //-------------------------
-  //Attach depth buffer to FBO
-  glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, dfbo_id);
-  //-------------------------
-  //Does the GPU support current FBO configuration?
-  GLenum status;
-  status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
-  switch(status)
-  {
-    case GL_FRAMEBUFFER_COMPLETE_EXT:
-      break;
-    default:
-      cout<<"error"<<endl;
-  }
-  glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);
-  glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
-}
-
-void reshape(int width,int height)
-{
-  using namespace std;
-  // Save width and height
-  ::width = width;
-  ::height = height;
-  // Re-initialize textures and frame bufferes
-  init_texture();
-  glMatrixMode(GL_PROJECTION);
-  glLoadIdentity();
-  glViewport(0,0,width,height);
-}
-
-// Set up double-sided lights
-void lights()
-{
-  using namespace std;
-  glEnable(GL_LIGHTING);
-  glLightModelf(GL_LIGHT_MODEL_TWO_SIDE,GL_TRUE);
-  glEnable(GL_LIGHT0);
-  glEnable(GL_LIGHT1);
-  float ones[4] = {1.0,1.0,1.0,1.0};
-  float zeros[4] = {0.0,0.0,0.0,0.0};
-  float pos[4];
-  copy(light_pos,light_pos+4,pos);
-  glLightfv(GL_LIGHT0,GL_AMBIENT,zeros);
-  glLightfv(GL_LIGHT0,GL_DIFFUSE,ones);
-  glLightfv(GL_LIGHT0,GL_SPECULAR,zeros);
-  glLightfv(GL_LIGHT0,GL_POSITION,pos);
-  pos[0] *= -1;
-  pos[1] *= -1;
-  pos[2] *= -1;
-  glLightfv(GL_LIGHT1,GL_AMBIENT,zeros);
-  glLightfv(GL_LIGHT1,GL_DIFFUSE,ones);
-  glLightfv(GL_LIGHT1,GL_SPECULAR,zeros);
-  glLightfv(GL_LIGHT1,GL_POSITION,pos);
-}
-
-// Set up igl::opengl2::projection and model view of scene
-void push_scene()
-{
-  using namespace igl;
-  glMatrixMode(GL_PROJECTION);
-  glLoadIdentity();
-  gluPerspective(45,(double)width/(double)height,1e-2,100);
-  glMatrixMode(GL_MODELVIEW);
-  glLoadIdentity();
-  gluLookAt(0,0,3,0,0,0,0,1,0);
-  glPushMatrix();
-  float mat[4*4];
-  quat_to_mat(scene_rot,mat);
-  glMultMatrixf(mat);
-}
-
-void pop_scene()
-{
-  glPopMatrix();
-}
-
-// Scale and shift for object
-void push_object()
-{
-  glPushMatrix();
-  glScaled(2./bbd,2./bbd,2./bbd);
-  glTranslated(-mean(0,0),-mean(0,1),-mean(0,2));
-}
-
-void pop_object()
-{
-  glPopMatrix();
-}
-
-const float back[4] = {190.0/255.0,190.0/255.0,190.0/255.0,0};
-void display()
-{
-  using namespace Eigen;
-  using namespace igl;
-  using namespace std;
-  glClearColor(back[0],back[1],back[2],0);
-  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-  // All smooth points
-  glEnable( GL_POINT_SMOOTH );
-
-  lights();
-  push_scene();
-  glEnable(GL_DEPTH_TEST);
-  glDepthFunc(GL_LEQUAL);
-  glEnable(GL_NORMALIZE);
-  glEnable(GL_COLOR_MATERIAL);
-  glColorMaterial(GL_FRONT_AND_BACK,GL_AMBIENT_AND_DIFFUSE);
-  push_object();
-
-  if(trackball_on)
-  {
-    // Draw a "laser" line
-    glLineWidth(3.0);
-    glDisable(GL_LIGHTING);
-    glEnable(GL_DEPTH_TEST);
-    glBegin(GL_LINES);
-    glColor3f(1,0,0);
-    glVertex3fv(s.data());
-    glColor3f(1,0,0);
-    glVertex3fv(d.data());
-    glEnd();
-
-    // Draw the start and end points used for ray
-    glPointSize(10.0);
-    glBegin(GL_POINTS);
-    glColor3f(1,0,0);
-    glVertex3fv(s.data());
-    glColor3f(0,0,1);
-    glVertex3fv(d.data());
-    glEnd();
-  }
-
-  // Draw the model
-  glEnable(GL_LIGHTING);
-  igl::opengl2::draw_mesh(V,F,N,C);
-
-  // Draw all hits
-  glBegin(GL_POINTS);
-  glColor3f(0,0.2,0.2);
-  for(vector<igl::embree::Hit>::iterator hit = hits.begin();
-      hit != hits.end();
-      hit++)
-  {
-    const double w0 = (1.0-hit->u-hit->v);
-    const double w1 = hit->u;
-    const double w2 = hit->v;
-    VectorXd hitP =
-      w0 * V.row(F(hit->id,0)) +
-      w1 * V.row(F(hit->id,1)) +
-      w2 * V.row(F(hit->id,2));
-    glVertex3dv(hitP.data());
-  }
-  glEnd();
-
-  pop_object();
-
-  // Draw a nice floor
-  glPushMatrix();
-  glEnable(GL_LIGHTING);
-  glTranslated(0,-1,0);
-  igl::opengl2::draw_floor();
-  glPopMatrix();
-
-  // draw a transparent "projection screen" show model at time of hit (aka
-  // mouse down)
-  push_object();
-  if(trackball_on)
-  {
-    glColor4f(0,0,0,1.0);
-    glPointSize(10.0);
-    glBegin(GL_POINTS);
-    glVertex3fv(SW.data());
-    glVertex3fv(SE.data());
-    glVertex3fv(NE.data());
-    glVertex3fv(NW.data());
-    glEnd();
-
-    glDisable(GL_LIGHTING);
-    glEnable(GL_TEXTURE_2D);
-    glBindTexture(GL_TEXTURE_2D, tex_id);
-    glColor4f(1,1,1,0.7);
-    glBegin(GL_QUADS);
-    glTexCoord2d(0,0);
-    glVertex3fv(SW.data());
-    glTexCoord2d(1,0);
-    glVertex3fv(SE.data());
-    glTexCoord2d(1,1);
-    glVertex3fv(NE.data());
-    glTexCoord2d(0,1);
-    glVertex3fv(NW.data());
-    glEnd();
-    glBindTexture(GL_TEXTURE_2D, 0);
-    glDisable(GL_TEXTURE_2D);
-  }
-  pop_object();
-  pop_scene();
-
-  // Draw a faint point over mouse
-  if(!trackball_on)
-  {
-    glDisable(GL_LIGHTING);
-    glDisable(GL_COLOR_MATERIAL);
-    glDisable(GL_DEPTH_TEST);
-    glEnable(GL_BLEND);
-    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
-    glColor4f(1.0,0.3,0.3,0.6);
-    glMatrixMode(GL_PROJECTION);
-    glLoadIdentity();
-    gluOrtho2D(0,width,0,height);
-    glMatrixMode(GL_MODELVIEW);
-    glLoadIdentity();
-    glPointSize(20.0);
-    glBegin(GL_POINTS);
-    glVertex2fv(win_s.data());
-    glEnd();
-  }
-  igl::opengl::report_gl_error();
-
-  glutSwapBuffers();
-  glutPostRedisplay();
-}
-
-// Initialize colors to a boring green
-void init_C()
-{
-  C.col(0).setConstant(0.4);
-  C.col(1).setConstant(0.8);
-  C.col(2).setConstant(0.3);
-}
-
-void mouse_move(int mouse_x, int mouse_y)
-{
-  using namespace std;
-  using namespace Eigen;
-  using namespace igl;
-  using namespace std;
-  init_C();
-  glutSetCursor(GLUT_CURSOR_CROSSHAIR);
-  // Push scene and object
-  push_scene();
-  push_object();
-  // Unproject mouse at 0 depth and some positive depth
-  win_s = Vector3f(mouse_x,height-mouse_y,0);
-  Vector3f win_d(mouse_x,height-mouse_y,1);
-  igl::opengl2::unproject(win_s,s);
-  igl::opengl2::unproject(win_d,d);
-  pop_object();
-  pop_scene();
-  igl::opengl::report_gl_error();
-  // Shoot ray at igl::opengl2::unprojected mouse in view direction
-  dir = d-s;
-  int num_rays_shot;
-  ei.intersectRay(s,dir,hits,num_rays_shot);
-  for(vector<igl::embree::Hit>::iterator hit = hits.begin();
-      hit != hits.end();
-      hit++)
-  {
-    // Change color of hit faces
-    C(hit->id,0) = 1;
-    C(hit->id,1) = 0.4;
-    C(hit->id,2) = 0.4;
-  }
-}
-
-void mouse(int glutButton, int glutState, int mouse_x, int mouse_y)
-{
-  using namespace std;
-  using namespace Eigen;
-  using namespace igl;
-  switch(glutState)
-  {
-    case 1:
-      // up
-      glutSetCursor(GLUT_CURSOR_CROSSHAIR);
-      trackball_on = false;
-      hits.clear();
-      init_C();
-      break;
-    case 0:
-      // be sure this has been called recently
-      mouse_move(mouse_x,mouse_y);
-      // down
-      glutSetCursor(GLUT_CURSOR_CYCLE);
-      // collect information for trackball
-      trackball_on = true;
-      copy(scene_rot,scene_rot+4,down_scene_rot);
-      down_mouse_x = mouse_x;
-      down_mouse_y = mouse_y;
-      // Collect "projection screen" locations
-      push_scene();
-      push_object();
-      // igl::opengl2::unproject corners of window
-      const double depth = 0.999;
-      Vector3d win_NW(    0,height,depth);
-      Vector3d win_NE(width,height,depth);
-      Vector3d win_SE(width,0,depth);
-      Vector3d win_SW(0,0,depth);
-      igl::opengl2::unproject(win_NW,NW);
-      igl::opengl2::unproject(win_NE,NE);
-      igl::opengl2::unproject(win_SE,SE);
-      igl::opengl2::unproject(win_SW,SW);
-      // render to framebuffer
-      glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo_id);
-      glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, dfbo_id);
-      glClearColor(0,0,0,1);
-      glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-      // Render the model ---> to the framebuffer attached to the "projection
-      // screen" texture
-      glEnable(GL_COLOR_MATERIAL);
-      glColorMaterial(GL_FRONT_AND_BACK,GL_AMBIENT_AND_DIFFUSE);
-      glEnable(GL_LIGHTING);
-      glEnable(GL_DEPTH_TEST);
-      igl::opengl2::draw_mesh(V,F,N,C);
-      pop_object();
-      pop_scene();
-      glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
-      glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);
-    break;
-  }
-}
-
-void mouse_drag(int mouse_x, int mouse_y)
-{
-  using namespace igl;
-
-  if(trackball_on)
-  {
-    // Rotate according to trackball
-    trackball<float>(
-      width,
-      height,
-      2,
-      down_scene_rot,
-      down_mouse_x,
-      down_mouse_y,
-      mouse_x,
-      mouse_y,
-      scene_rot);
-  }
-}
-
-
-void key(unsigned char key, int mouse_x, int mouse_y)
-{
-  using namespace std;
-  switch(key)
-  {
-    // Ctrl-c and esc exit
-    case char(3):
-    case char(27):
-      exit(0);
-    default:
-      cout<<"Unknown key command: "<<key<<" "<<int(key)<<endl;
-  }
-
-}
-
-int main(int argc, char * argv[])
-{
-  using namespace Eigen;
-  using namespace igl;
-  using namespace std;
-
-  // init mesh
-  string filename = "../shared/decimated-knight.obj";
-  if(argc < 2)
-  {
-    cerr<<"Usage:"<<endl<<"    ./example input.obj"<<endl;
-    cout<<endl<<"Opening default mesh..."<<endl;
-  }else
-  {
-    // Read and prepare mesh
-    filename = argv[1];
-  }
-  if(!read_triangle_mesh(filename,V,F))
-  {
-    return 1;
-  }
-  // Compute normals, centroid, colors, bounding box diagonal
-  per_face_normals(V,F,N);
-  normalize_row_lengths(N,N);
-  mean = V.colwise().mean();
-  C.resize(F.rows(),3);
-  init_C();
-  bbd =
-    (V.colwise().maxCoeff() -
-    V.colwise().minCoeff()).maxCoeff();
-
-  // Init embree
-  ei.init(V.cast<float>(),F.cast<int>());
-
-  // Init glut
-  glutInit(&argc,argv);
-  glutInitDisplayString( "rgba depth double samples>=8 ");
-  glutInitWindowSize(glutGet(GLUT_SCREEN_WIDTH)/2.0,glutGet(GLUT_SCREEN_HEIGHT));
-  glutCreateWindow("embree");
-  glutDisplayFunc(display);
-  glutReshapeFunc(reshape);
-  glutKeyboardFunc(key);
-  glutMouseFunc(mouse);
-  glutMotionFunc(mouse_drag);
-  glutPassiveMotionFunc(mouse_move);
-  glutMainLoop();
-  return 0;
-}

examples/file_contents_as_string/Makefile

@@ -1,21 +0,0 @@
-.PHONY: all
-
-# Shared flags etc.
-include ../Makefile.conf
-
-all: example
-
-.PHONY: example
-
-CFLAGS+=-g
-inc=$(LIBIGL_INC)
-lib=$(LIBIGL_LIB)
-
-example: example.o
-	g++ $(CFLAGS) -o example example.o $(lib)
-
-example.o: example.cpp
-	g++ $(CFLAGS) -c example.cpp -o example.o $(inc)
-clean:
-	rm -f example.o
-	rm -f example

examples/file_contents_as_string/README

@@ -1,14 +0,0 @@
-This is a simple example program that shows how to use the
-file_contents_as_string function in the igl library.
-
-
-To Build:
-  make
-
-To Run:
-  ./example [path_1] [path_2] ... [path_n]
-
-Example Run #1:
-  Issuing:
-    ./example example.cpp | diff - example.cpp
-  Should produce no differences

examples/file_contents_as_string/example.cpp

@@ -1,26 +0,0 @@
-#include <igl/file_contents_as_string.h>
-using namespace igl;
-#include <cstdio>
-#include <string>
-using namespace std;
-
-int main(int argc, char * argv[])
-{
-  if(argc <= 1)
-  {
-    printf("USAGE:\n  ./example [path_1] [path_2] ... [path_n]\n");
-    return 1;
-  }
-  // loop over arguments
-  for(int i = 1; i < argc; i++)
-  {
-    string content;
-    bool success = file_contents_as_string(argv[i],content);
-    if(!success)
-    {
-      return 1;
-    }
-    printf("%s",content.c_str());
-  }
-  return 0;
-}

examples/flare-eyes/Makefile

@@ -1,32 +0,0 @@
-.PHONY: all
-
-# Shared flags etc.
-include ../Makefile.conf
-
-all: obj example
-
-.PHONY: example
-
-INC=$(LIBIGL_INC) $(ANTTWEAKBAR_INC) $(EIGEN3_INC) $(MATLAB_INC) $(GLUT_INC)
-LIB=$(OPENGL_LIB) $(GLUT_LIB) $(ANTTWEAKBAR_LIB) $(LIBIGL_LIB) $(MATLAB_LIB) $(CARBON_LIB)
-
-CPP_FILES=$(wildcard ./*.cpp)
-OBJ_FILES=$(addprefix obj/,$(notdir $(CPP_FILES:.cpp=.o))) 
-
-CFLAGS+=-g -std=c++11
-
-example: obj $(OBJ_FILES)
-	g++ $(OPENMP) $(AFLAGS) $(CFLAGS) -o example $(OBJ_FILES) $(LIB)
-
-obj:
-	mkdir -p obj
-
-obj/%.o: %.cpp
-	g++ $(OPENMP) $(AFLAGS) $(CFLAGS) -c $< -o $@ $(INC)
-
-obj/%.o: %.cpp %.h
-	g++ $(OPENMP) $(AFLAGS) $(CFLAGS) -c $< -o $@ $(INC)
-
-clean:
-	rm -f $(OBJ_FILES)
-	rm -f example

examples/flare-eyes/example.cpp

@@ -1,739 +0,0 @@
-#include <igl/Camera.h>
-#include <igl/PI.h>
-#include <igl/REDRUM.h>
-#include <igl/STR.h>
-#include <igl/opengl2/draw_floor.h>
-#include <igl/opengl2/draw_mesh.h>
-#include <igl/get_seconds.h>
-#include <igl/opengl2/lens_flare.h>
-#include <igl/list_to_matrix.h>
-#include <igl/material_colors.h>
-#include <igl/pathinfo.h>
-#include <igl/per_face_normals.h>
-#include <igl/polygon_mesh_to_triangle_mesh.h>
-#include <igl/quat_to_mat.h>
-#include <igl/readMESH.h>
-#include <igl/readOBJ.h>
-#include <igl/readOFF.h>
-#include <igl/readWRL.h>
-#include <igl/opengl/render_to_tga.h>
-#include <igl/opengl/report_gl_error.h>
-#include <igl/snap_to_canonical_view_quat.h>
-#include <igl/snap_to_fixed_up.h>
-#include <igl/trackball.h>
-#include <igl/two_axis_valuator_fixed_up.h>
-#include <igl/writeOBJ.h>
-#include <igl/writeOFF.h>
-#include <igl/anttweakbar/ReAntTweakBar.h>
-
-#include <Eigen/Core>
-#include <Eigen/Geometry>
-
-#ifdef __APPLE__
-#include <GLUT/glut.h>
-#else
-#include <GL/glut.h>
-#endif
-
-#ifndef GLUT_WHEEL_UP
-#define GLUT_WHEEL_UP    3
-#endif
-#ifndef GLUT_WHEEL_DOWN
-#define GLUT_WHEEL_DOWN  4
-#endif
-#ifndef GLUT_WHEEL_RIGHT
-#define GLUT_WHEEL_RIGHT 5
-#endif
-#ifndef GLUT_WHEEL_LEFT
-#define GLUT_WHEEL_LEFT  6
-#endif
-#ifndef GLUT_ACTIVE_COMMAND
-#define GLUT_ACTIVE_COMMAND 8
-#endif
-
-#include <string>
-#include <vector>
-#include <iomanip>
-#include <stack>
-#include <iostream>
-
-bool eyes_visible = true;
-double x=6,y=232,z=61;
-
-std::vector<igl::opengl2::Flare> flares;
-std::vector<GLuint> shine_ids;
-std::vector<GLuint> flare_ids;
-int shine_tic = 0;
-
-GLuint list_id = 0;
-Eigen::MatrixXd V,N;
-Eigen::VectorXd Vmid,Vmin,Vmax;
-double bbd = 1.0;
-Eigen::MatrixXi F;
-struct State
-{
-  igl::Camera camera;
-} s;
-
-// See README for descriptions
-enum RotationType
-{
-  ROTATION_TYPE_IGL_TRACKBALL = 0,
-  ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP = 1,
-  NUM_ROTATION_TYPES = 2,
-} rotation_type;
-
-std::stack<State> undo_stack;
-std::stack<State> redo_stack;
-
-bool is_rotating = false;
-int down_x,down_y;
-igl::Camera down_camera;
-bool render_to_tga_on_next = false;
-int render_count = 0;
-
-int width,height;
-Eigen::Vector4f light_pos(-0.1,-0.1,0.9,0);
-
-#define REBAR_NAME "temp.rbr"
-igl::anttweakbar::ReTwBar rebar;
-
-bool is_animating = false;
-double animation_start_time = 0;
-double ANIMATION_DURATION = 0.5;
-Eigen::Quaterniond animation_from_quat;
-Eigen::Quaterniond animation_to_quat;
-
-void push_undo()
-{
-  undo_stack.push(s);
-  // Clear
-  redo_stack = std::stack<State>();
-}
-
-void TW_CALL set_rotation_type(const void * value, void * clientData)
-{
-  using namespace Eigen;
-  using namespace std;
-  using namespace igl;
-  const RotationType old_rotation_type = rotation_type;
-  rotation_type = *(const RotationType *)(value);
-  if(rotation_type == ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP &&
-    old_rotation_type != ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP)
-  {
-    push_undo();
-    animation_from_quat = s.camera.m_rotation_conj;
-    snap_to_fixed_up(animation_from_quat,animation_to_quat);
-    // start animation
-    animation_start_time = get_seconds();
-    is_animating = true;
-  }
-}
-void TW_CALL get_rotation_type(void * value, void *clientData)
-{
-  RotationType * rt = (RotationType *)(value);
-  *rt = rotation_type;
-}
-
-void reshape(int width, int height)
-{
-  ::width = width;
-  ::height = height;
-  glViewport(0,0,width,height);
-  // Send the new window size to AntTweakBar
-  TwWindowSize(width, height);
-  s.camera.m_aspect = (double)width/(double)height;
-}
-
-void push_scene()
-{
-  using namespace igl;
-  using namespace std;
-  glMatrixMode(GL_PROJECTION);
-  glPushMatrix();
-  glLoadIdentity();
-  auto & camera = s.camera;
-  glMultMatrixd(camera.projection().data());
-  glMatrixMode(GL_MODELVIEW);
-  glPushMatrix();
-  glLoadIdentity();
-  gluLookAt(
-    camera.eye()(0), camera.eye()(1), camera.eye()(2),
-    camera.at()(0), camera.at()(1), camera.at()(2),
-    camera.up()(0), camera.up()(1), camera.up()(2));
-}
-
-void push_object()
-{
-  using namespace igl;
-  glPushMatrix();
-  glScaled(2./bbd,2./bbd,2./bbd);
-  glTranslated(-Vmid(0),-Vmid(1),-Vmid(2));
-}
-
-void pop_object()
-{
-  glPopMatrix();
-}
-
-void pop_scene()
-{
-  glMatrixMode(GL_PROJECTION);
-  glPopMatrix();
-  glMatrixMode(GL_MODELVIEW);
-  glPopMatrix();
-}
-
-// Set up double-sided lights
-void lights()
-{
-  using namespace std;
-  using namespace Eigen;
-  glEnable(GL_LIGHTING);
-  glLightModelf(GL_LIGHT_MODEL_TWO_SIDE,GL_TRUE);
-  glEnable(GL_LIGHT0);
-  glEnable(GL_LIGHT1);
-  float WHITE[4] =  {0.8,0.8,0.8,1.};
-  float GREY[4] =  {0.2,0.2,0.2,1.};
-  float BLACK[4] =  {0.,0.,0.,1.};
-  Vector4f pos = light_pos;
-  glLightfv(GL_LIGHT0,GL_AMBIENT,GREY);
-  glLightfv(GL_LIGHT0,GL_DIFFUSE,WHITE);
-  glLightfv(GL_LIGHT0,GL_SPECULAR,GREY);
-  glLightfv(GL_LIGHT0,GL_POSITION,pos.data());
-  pos(0) *= -1;
-  pos(1) *= -1;
-  pos(2) *= -1;
-  glLightfv(GL_LIGHT1,GL_AMBIENT,GREY);
-  glLightfv(GL_LIGHT1,GL_DIFFUSE,WHITE);
-  glLightfv(GL_LIGHT1,GL_SPECULAR,BLACK);
-  glLightfv(GL_LIGHT1,GL_POSITION,pos.data());
-}
-
-void init_flare()
-{
-}
-
-void draw_flare()
-{
-  using namespace igl;
-  using namespace Eigen;
-  glPushMatrix();
-  glScaled(bbd*0.5,bbd*0.5,bbd*0.5);
-  glScaled(0.2,0.2,0.2);
-  Vector3f light(0,0,0);
-  igl::opengl2::lens_flare_draw(flares,shine_ids,flare_ids,light,1.0,shine_tic);
-  glPopMatrix();
-}
-
-void draw_eyes()
-{
-  using namespace Eigen;
-  using namespace std;
-  using namespace igl;
-#define NUM_LEDS 2
-  Vector3d LED_pos[NUM_LEDS];
-  LED_pos[0] = Vector3d( x,y,z);
-  LED_pos[1] = Vector3d(-x,y,z);
-  enum LEDMethod
-  {
-    LED_METHOD_COLORED_CIRCLE = 0,
-    LED_METHOD_OUTLINED_CIRCLE = 1,
-    LED_METHOD_TEXTURE_FLARE = 2
-  } method = LED_METHOD_TEXTURE_FLARE;
-
-
-  for(int l = 0;l<NUM_LEDS;l++)
-  {
-    glPushMatrix();
-    glTranslated(LED_pos[l](0), LED_pos[l](1), LED_pos[l](2));
-    const double r = 2.0;
-    const float color[4] = {1,0,0,1};
-    glScaled(r,r,r);
-    switch(method)
-    {
-      case LED_METHOD_COLORED_CIRCLE:
-      {
-        glEnable(GL_COLOR_MATERIAL);
-        glColorMaterial(GL_FRONT,GL_AMBIENT);
-        glColor4fv(color);
-        glBegin(GL_TRIANGLE_FAN);
-        glVertex3d(0,0,0);
-        for(double theta = 0;theta<2.*PI;theta+=2.*PI/15.)
-        {
-          glVertex3d(cos(theta),sin(theta),0);
-        }
-        glEnd();
-        break;
-      }
-      case LED_METHOD_OUTLINED_CIRCLE:
-      {
-        glEnable(GL_COLOR_MATERIAL);
-        glDisable(GL_LIGHTING);
-        glColorMaterial(GL_FRONT,GL_DIFFUSE);
-        glBegin(GL_TRIANGLE_FAN);
-        glColor4fv(color);
-        glVertex3d(0,0,0);
-        glColor4f(0,0,0,1);
-        for(double theta = 0;theta<2.*PI;theta+=2.*PI/15.)
-        {
-          glVertex3d(cos(theta),sin(theta),0);
-        }
-        glEnd();
-        break;
-      }
-      case LED_METHOD_TEXTURE_FLARE:
-      {
-        draw_flare();
-        break;
-      }
-    }
-    glPopMatrix();
-  }
-}
-
-void display()
-{
-  using namespace igl;
-  using namespace Eigen;
-  using namespace std;
-  glClearColor(0.03,0.03,0.04,0);
-  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
-  if(is_animating)
-  {
-    double t = (get_seconds() - animation_start_time)/ANIMATION_DURATION;
-    if(t > 1)
-    {
-      t = 1;
-      is_animating = false;
-    }
-    Quaterniond q = animation_from_quat.slerp(t,animation_to_quat).normalized();
-    auto & camera = s.camera;
-    camera.orbit(q.conjugate());
-  }
-
-  glEnable(GL_DEPTH_TEST);
-  glEnable(GL_BLEND);
-  glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
-  glEnable(GL_NORMALIZE);
-  lights();
-  push_scene();
-
-
-
-  if(list_id == 0)
-  {
-    list_id = glGenLists(1);
-    glNewList(list_id,GL_COMPILE);
-
-    push_object();
-    // Set material properties
-    glDisable(GL_COLOR_MATERIAL);
-    const float NEAR_BLACK[4] = {0.1,0.1,0.1,1.0};
-    glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT,  NEAR_BLACK);
-    glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE,  MIDNIGHT_BLUE_DIFFUSE);
-    glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, SILVER_SPECULAR);
-    glMaterialf (GL_FRONT_AND_BACK, GL_SHININESS, 128);
-    igl::opengl2::draw_mesh(V,F,N);
-    pop_object();
-    // Draw a nice floor
-    glPushMatrix();
-    const double floor_offset =
-      -2./bbd*(V.col(1).maxCoeff()-Vmid(1));
-    glTranslated(0,floor_offset,0);
-    const float GREY[4] = {0.5,0.5,0.6,1.0};
-    const float DARK_GREY[4] = {0.2,0.2,0.3,1.0};
-    igl::opengl2::draw_floor(GREY,DARK_GREY);
-    glPopMatrix();
-
-    glEndList();
-  }
-  glCallList(list_id);
-
-
-  push_object();
-  if(eyes_visible)
-  {
-    draw_eyes();
-  }
-  pop_object();
-
-  pop_scene();
-
-  igl::opengl::report_gl_error();
-
-  if(render_to_tga_on_next)
-  {
-    GLint viewport[4];
-    glGetIntegerv(GL_VIEWPORT,viewport);
-    igl::opengl::render_to_tga(
-      STR("./"<< "flare-eyes-" << setw(4) << setfill('0') << render_count++ << ".tga"),
-      viewport[2],viewport[3],true);
-    //render_to_tga_on_next = false;
-  }
-
-  TwDraw();
-  glutSwapBuffers();
-  glutPostRedisplay();
-}
-
-void mouse_wheel(int wheel, int direction, int mouse_x, int mouse_y)
-{
-  using namespace std;
-  using namespace igl;
-  using namespace Eigen;
-  GLint viewport[4];
-  glGetIntegerv(GL_VIEWPORT,viewport);
-  if(wheel == 0 && TwMouseMotion(mouse_x, viewport[3] - mouse_y))
-  {
-    static double mouse_scroll_y = 0;
-    const double delta_y = 0.125*direction;
-    mouse_scroll_y += delta_y;
-    TwMouseWheel(mouse_scroll_y);
-    return;
-  }
-  push_undo();
-
-  auto & camera = s.camera;
-  if(wheel==0)
-  {
-    // factor of zoom change
-    double s = (1.-0.01*direction);
-    //// FOV zoom: just widen angle. This is hardly ever appropriate.
-    //camera.m_angle *= s;
-    //camera.m_angle = min(max(camera.m_angle,1),89);
-    camera.push_away(s);
-  }else
-  {
-    // Dolly zoom:
-    camera.dolly_zoom((double)direction*1.0);
-  }
-}
-
-void mouse(int glutButton, int glutState, int mouse_x, int mouse_y)
-{
-  using namespace std;
-  using namespace Eigen;
-  using namespace igl;
-
-  bool tw_using = TwEventMouseButtonGLUT(glutButton,glutState,mouse_x,mouse_y);
-  switch(glutButton)
-  {
-    case GLUT_RIGHT_BUTTON:
-    case GLUT_LEFT_BUTTON:
-    {
-      switch(glutState)
-      {
-        case 1:
-          // up
-          glutSetCursor(GLUT_CURSOR_INHERIT);
-          is_rotating = false;
-          break;
-        case 0:
-          if(!tw_using)
-          {
-            push_undo();
-            glutSetCursor(GLUT_CURSOR_CYCLE);
-            // collect information for trackball
-            is_rotating = true;
-            down_camera = s.camera;
-            down_x = mouse_x;
-            down_y = mouse_y;
-          }
-        break;
-      }
-      break;
-    }
-#ifdef GLUT_WHEEL_DOWN
-    // Scroll down
-    case GLUT_WHEEL_DOWN:
-    {
-      mouse_wheel(0,-1,mouse_x,mouse_y);
-      break;
-    }
-#endif
-#ifdef GLUT_WHEEL_UP
-    // Scroll up
-    case GLUT_WHEEL_UP:
-    {
-      mouse_wheel(0,1,mouse_x,mouse_y);
-      break;
-    }
-#endif
-#ifdef GLUT_WHEEL_LEFT
-    // Scroll left
-    case GLUT_WHEEL_LEFT:
-    {
-      mouse_wheel(1,-1,mouse_x,mouse_y);
-      break;
-    }
-#endif
-#ifdef GLUT_WHEEL_RIGHT
-    // Scroll right
-    case GLUT_WHEEL_RIGHT:
-    {
-      mouse_wheel(1,1,mouse_x,mouse_y);
-      break;
-    }
-#endif
-  }
-}
-
-void mouse_drag(int mouse_x, int mouse_y)
-{
-  using namespace igl;
-  using namespace std;
-  using namespace Eigen;
-  /*bool tw_using =*/ TwMouseMotion(mouse_x,mouse_y);
-
-  if(is_rotating)
-  {
-    glutSetCursor(GLUT_CURSOR_CYCLE);
-    Quaterniond q;
-    auto & camera = s.camera;
-    switch(rotation_type)
-    {
-      case ROTATION_TYPE_IGL_TRACKBALL:
-      {
-        // Rotate according to trackball
-        igl::trackball<double>(
-          width,
-          height,
-          2.0,
-          down_camera.m_rotation_conj.coeffs().data(),
-          down_x,
-          down_y,
-          mouse_x,
-          mouse_y,
-          q.coeffs().data());
-          break;
-      }
-      case ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP:
-      {
-        // Rotate according to two axis valuator with fixed up vector
-        two_axis_valuator_fixed_up(
-          width, height,
-          2.0,
-          down_camera.m_rotation_conj,
-          down_x, down_y, mouse_x, mouse_y,
-          q);
-        break;
-      }
-      default:
-        break;
-    }
-    camera.orbit(q.conjugate());
-  }
-}
-
-void init_relative()
-{
-  using namespace Eigen;
-  using namespace igl;
-  using namespace std;
-  per_face_normals(V,F,N);
-  Vmax = V.colwise().maxCoeff();
-  Vmin = V.colwise().minCoeff();
-  Vmid = 0.5*(Vmax + Vmin);
-  bbd = (Vmax-Vmin).norm();
-}
-
-
-void undo()
-{
-  using namespace std;
-  if(!undo_stack.empty())
-  {
-    redo_stack.push(s);
-    s = undo_stack.top();
-    undo_stack.pop();
-  }
-}
-
-void redo()
-{
-  using namespace std;
-  if(!redo_stack.empty())
-  {
-    undo_stack.push(s);
-    s = redo_stack.top();
-    redo_stack.pop();
-  }
-}
-
-void key(unsigned char key, int mouse_x, int mouse_y)
-{
-  using namespace std;
-  using namespace igl;
-  using namespace Eigen;
-  int mod = glutGetModifiers();
-  switch(key)
-  {
-    // ESC
-    case char(27):
-      rebar.save(REBAR_NAME);
-    // ^C
-    case char(3):
-      exit(0);
-    case 'z':
-    case 'Z':
-      if(mod & GLUT_ACTIVE_COMMAND)
-      {
-        if(mod & GLUT_ACTIVE_SHIFT)
-        {
-          redo();
-        }else
-        {
-          undo();
-        }
-        break;
-      }else
-      {
-        push_undo();
-        Quaterniond q;
-        snap_to_canonical_view_quat(s.camera.m_rotation_conj,1.0,q);
-        s.camera.orbit(q.conjugate());
-        break;
-      }
-    case ' ':
-      render_to_tga_on_next = !render_to_tga_on_next;
-      break;
-    default:
-      if(!TwEventKeyboardGLUT(key,mouse_x,mouse_y))
-      {
-        cout<<"Unknown key command: "<<key<<" "<<int(key)<<endl;
-      }
-  }
-
-}
-
-int main(int argc, char * argv[])
-{
-  using namespace std;
-  using namespace Eigen;
-  using namespace igl;
-  string filename = "../shared/beast.obj";
-  if(argc < 2)
-  {
-    cerr<<"Usage:"<<endl<<"    ./example input.obj"<<endl;
-    cout<<endl<<"Opening default mesh..."<<endl;
-  }else
-  {
-    // Read and prepare mesh
-    filename = argv[1];
-  }
-
-  // print key commands
-  cout<<"[Click] and [drag]  Rotate model using trackball."<<endl;
-  cout<<"[Z,z]               Snap rotation to canonical view."<<endl;
-  cout<<"[⌘ Z]               Undo."<<endl;
-  cout<<"[⇧ ⌘ Z]             Redo."<<endl;
-  cout<<"[^C,ESC]            Exit."<<endl;
-
-  // dirname, basename, extension and filename
-  string d,b,ext,f;
-  pathinfo(filename,d,b,ext,f);
-  // Convert extension to lower case
-  transform(ext.begin(), ext.end(), ext.begin(), ::tolower);
-  vector<vector<double > > vV,vN,vTC;
-  vector<vector<int > > vF,vFTC,vFN;
-  if(ext == "obj")
-  {
-    // Convert extension to lower case
-    if(!igl::readOBJ(filename,vV,vTC,vN,vF,vFTC,vFN))
-    {
-      return 1;
-    }
-  }else if(ext == "off")
-  {
-    // Convert extension to lower case
-    if(!igl::readOFF(filename,vV,vF,vN))
-    {
-      return 1;
-    }
-  }else if(ext == "wrl")
-  {
-    // Convert extension to lower case
-    if(!igl::readWRL(filename,vV,vF))
-    {
-      return 1;
-    }
-  //}else
-  //{
-  //  // Convert extension to lower case
-  //  MatrixXi T;
-  //  if(!igl::readMESH(filename,V,T,F))
-  //  {
-  //    return 1;
-  //  }
-  //  //if(F.size() > T.size() || F.size() == 0)
-  //  {
-  //    boundary_facets(T,F);
-  //  }
-  }
-  if(vV.size() > 0)
-  {
-    if(!list_to_matrix(vV,V))
-    {
-      return 1;
-    }
-    polygon_mesh_to_triangle_mesh(vF,F);
-  }
-
-  init_relative();
-
-  // Init glut
-  glutInit(&argc,argv);
-  if( !TwInit(TW_OPENGL, NULL) )
-  {
-    // A fatal error occured
-    fprintf(stderr, "AntTweakBar initialization failed: %s\n", TwGetLastError());
-    return 1;
-  }
-  // Create a tweak bar
-  rebar.TwNewBar("TweakBar");
-  rebar.TwAddVarRW("camera_rotation", TW_TYPE_QUAT4D,
-    s.camera.m_rotation_conj.coeffs().data(),"open readonly=true");
-  TwType RotationTypeTW = igl::anttweakbar::ReTwDefineEnumFromString("RotationType",
-    "igl_trackball,two-axis-valuator-fixed-up");
-  rebar.TwAddVarCB( "rotation_type", RotationTypeTW,
-    set_rotation_type,get_rotation_type,NULL,"keyIncr=] keyDecr=[");
-  rebar.TwAddVarRW( "x",TW_TYPE_DOUBLE, &x,"");
-  rebar.TwAddVarRW( "y",TW_TYPE_DOUBLE, &y,"");
-  rebar.TwAddVarRW( "z",TW_TYPE_DOUBLE, &z,"");
-  rebar.TwAddVarRW( "eyes_visible",TW_TYPE_BOOLCPP, &eyes_visible,"key=e");
-  rebar.load(REBAR_NAME);
-
-  animation_from_quat = Quaterniond(1,0,0,0);
-  s.camera.m_rotation_conj = animation_from_quat;
-  animation_start_time = get_seconds();
-
-
-
-  // Init antweakbar
-  glutInitDisplayString( "rgba depth double samples>=8 ");
-  glutInitWindowSize(glutGet(GLUT_SCREEN_WIDTH)/2.0,glutGet(GLUT_SCREEN_HEIGHT)/2.0);
-  glutCreateWindow("upright");
-  glutDisplayFunc(display);
-  glutReshapeFunc(reshape);
-  glutKeyboardFunc(key);
-  glutMouseFunc(mouse);
-  glutMotionFunc(mouse_drag);
-  glutPassiveMotionFunc((GLUTmousemotionfun)TwEventMouseMotionGLUT);
-  // Init flares
-  igl::opengl2::lens_flare_load_textures(shine_ids,flare_ids);
-  const float RED[3] = {1,0,0};
-  const float GREEN[3] = {0,1,0};
-  const float BLUE[3] = {0,0,1};
-  //lens_flare_create(RED,GREEN,BLUE,flares);
-  flares.resize(4);
-  flares[0] = igl::opengl2::Flare(-1, 1.0f, 1.*0.1f,  RED, 1.0);
-  flares[1] = igl::opengl2::Flare(-1, 1.0f, 1.*0.15f, GREEN, 1.0);
-  flares[2] = igl::opengl2::Flare(-1, 1.0f, 1.*0.35f, BLUE, 1.0);
-  flares[3] = igl::opengl2::Flare( 2, 1.0f, 1.*0.1f, BLUE, 0.4);
-
-  glutMainLoop();
-
-  return 0;
-}

examples/get_seconds/Makefile

@@ -1,21 +0,0 @@
-.PHONY: all
-
-# Shared flags etc.
-include ../Makefile.conf
-
-all: example
-
-.PHONY: example
-
-CFLAGS+=-g -Wall
-inc=$(LIBIGL_INC)
-lib=$(LIBIGL_LIB)
-
-example: example.o
-	g++ $(CFLAGS) -o example example.o $(lib)
-
-example.o: example.cpp
-	g++ $(CFLAGS) -c example.cpp -o example.o $(inc)
-clean:
-	rm -f example.o
-	rm -f example

examples/get_seconds/README

@@ -1,20 +0,0 @@
-Simple program showing how to use get_seconds from the igl library
-
-Compile with:
-  make
-
-Run with:
-  ./example
-which should produces something similar to:
-  start: 0.001414s
-  1.00141s - 0.001414s = 1s
-  2.00141s - 0.001414s = 2s
-  3.00142s - 0.001414s = 3s
-  4.00141s - 0.001414s = 4s
-  5.00141s - 0.001414s = 5s
-  6.00141s - 0.001414s = 6s
-  7.00141s - 0.001414s = 7s
-  8.00141s - 0.001414s = 8s
-  9.00141s - 0.001414s = 9s
-  10.0014s - 0.001414s = 10s
-  end: 10.0014s

examples/get_seconds/example.cpp

@@ -1,24 +0,0 @@
-#include <igl/get_seconds.h>
-#include <cstdio>
-#include <cmath>
-
-int main(int argc, char * argv[])
-{
-  using namespace igl;
-  using namespace std;
-  double start = get_seconds();
-  printf("start: %lgs\n",start);
-  double lap = start;
-  double now;
-  do
-  {
-    now = get_seconds();
-    if((now-lap)>=1.0)
-    {
-      printf("%lgs - %lgs = %lgs\n",now,start,now-start);
-      lap = now-((now-start)-floor(now-start));
-    }
-  }while((now - start)<10.0);
-  printf("end: %lgs\n",now);
-  return 0;
-}

examples/glslversion/Makefile

@@ -1,23 +0,0 @@
-.PHONY: all
-
-# Shared flags etc.
-include ../Makefile.conf
-
-all: example
-
-.PHONY: example
-
-igl_lib=../../
-
-CFLAGS+=-g
-inc=$(LIBIGL_INC)
-lib=$(OPENGL_LIB) $(GLUT_LIB) $(LIBIGL_LIB)
-
-example: example.o
-	g++ $(CFLAGS) -o example example.o $(lib)
-
-example.o: example.cpp
-	g++ $(CFLAGS) -c example.cpp -o example.o $(inc)
-clean:
-	rm -f example.o
-	rm -f example

examples/glslversion/README

@@ -1,15 +0,0 @@
-This is a simple example program that creates a dummy GLUT window to get a
-valid opengl context then print the glsl version string
-
-
-To Build:
-  make
-
-To Run:
-  ./example
-
-Example Run #1:
-  Issuing:
-    ./example
-  should produce something like:
-    GL_SHADING_LANGUAGE_VERSION: 1.20

examples/glslversion/example.cpp

@@ -1,22 +0,0 @@
-#ifdef __APPLE__
-#  include <GLUT/glut.h>
-#else
-#  include <GL/glut.h>
-#endif
-#include <cstdio>
-
-int main(int argc,char * argv[])
-{
-  // Make GLUT window just to get a valid OpenGL context
-  glutInit(&argc,argv);
-  glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);
-  glutInitWindowSize(640, 480);
-  glutCreateWindow("Dummy");
-  glutCreateMenu(NULL);
-
-  printf("GL_VERSION: %s\n", 
-    glGetString(GL_VERSION));
-  printf("GL_SHADING_LANGUAGE_VERSION: %s\n", 
-    glGetString(GL_SHADING_LANGUAGE_VERSION));
-  return 0;
-}

examples/glut_speed_test/Makefile

@@ -1,24 +0,0 @@
-.PHONY: all
-
-all: example
-
-# Shared flags etc.
-include ../Makefile.conf
-
-.PHONY: example
-
-igl_lib=../../
-
-CFLAGS+=-g -Wall 
-INC=$(LIBIGL_INC)
-LIB=$(OPENGL_LIB) $(GLUT_LIB) $(LIBIGL_LIB)
-
-example: example.o
-	g++ $(CFLAGS) -o example example.o $(LIB)
-
-example.o: example.cpp
-	g++ $(CFLAGS) $(deps) -c example.cpp -o example.o $(INC)
-
-clean:
-	rm -f example.o
-	rm -f example

examples/glut_speed_test/example.cpp

@@ -1,67 +0,0 @@
-#include <igl/get_seconds.h>
-using namespace igl;
-#include <cstdio>
-#include <cmath>
-using namespace std;
-
-#if defined(__APPLE__)
-#   include <GLUT/glut.h>
-#else
-#   include <GL/glut.h>
-#endif
-
-const int width = 1088;
-const int height = 612;
-int frame_counter = 0;
-double start_time;
-// number of frames before computing fps
-const int frames_per_lap = 1000;
-
-void Display(void)
-{
-  // Clear the screen with current background color
-  glClearColor(
-    fabs(sin(get_seconds())),
-    fabs(sin(get_seconds()/3)),
-    fabs(sin(get_seconds()/7)),
-    0.0);
-  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-  // Present frame buffer
-  glutSwapBuffers();
-  // Recall Display at next frame
-  glutPostRedisplay();
-
-  frame_counter++;
-  if(frame_counter == frames_per_lap)
-  {
-    double elapsed_time = get_seconds()-start_time;
-    printf("%g fps: %d frames in %g seconds\n",
-      (double)frame_counter/elapsed_time,frame_counter,elapsed_time);
-    // reset frame counter and timer
-    start_time = get_seconds();
-    frame_counter = 0;
-  }
-}
-
-int main(int argc,char * argv[])
-{
-  // Initialize GLUT
-  glutInit(&argc, argv);
-  glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGBA | GLUT_DEPTH);
-  glutInitWindowSize(width, height);
-  // Center window
-  glutInitWindowPosition(
-      glutGet(GLUT_SCREEN_WIDTH)/2-glutGet(GLUT_INIT_WINDOW_WIDTH)/2,
-      glutGet(GLUT_SCREEN_HEIGHT)/2-glutGet(GLUT_INIT_WINDOW_HEIGHT)/2);
-  glutCreateWindow("");
-  glutCreateMenu(NULL);
-  // Set GLUT callbacks
-  glutDisplayFunc(Display);
-  //glutReshapeFunc(Reshape);
-
-  // initialize timer
-  start_time = get_seconds();
-  // Call the GLUT main loop
-  glutMainLoop();
-  return 0;
-}

examples/harwell_boeing/Makefile

@@ -1,21 +0,0 @@
-.PHONY: all
-
-# Shared flags etc.
-include ../Makefile.conf
-
-all: example
-
-.PHONY: example
-
-CFLAGS+=-g
-INC=$(LIBIGL_INC) $(EIGEN3_INC)
-LIB=$(LIBIGL_LIB)
-
-example: example.o
-	g++ $(CFLAGS) -o example example.o $(LIB)
-
-example.o: example.cpp
-	g++ $(CFLAGS) -c example.cpp -o example.o $(INC)
-clean:
-	rm -f example.o
-	rm -f example

examples/harwell_boeing/README

@@ -1,2 +0,0 @@
-Demonstrates how to use igl/harwell_boeing which computes indices and values of compressed column storage:
-http://eigen.tuxfamily.org/api/classEigen_1_1SparseMatrix.html

examples/harwell_boeing/example.cpp

@@ -1,45 +0,0 @@
-#define IGL_HEADER_ONLY
-#include <igl/harwell_boeing.h>
-#include <iostream>
-
-template <typename T>
-void print(T & v)
-{
-  std::cout<<v<<" ";
-}
-
-#include <cstdio>
-#include <vector>
-#include <algorithm>
-int main(int argc,char * argv[])
-{
-  using namespace Eigen;
-  using namespace std;
-  using namespace igl;
-  SparseMatrix<double> A(5,5);
-  A.insert(0,1) = 3;
-  A.insert(1,0) = 22;
-  A.insert(1,4) = 17;
-  A.insert(2,0) = 7;
-  A.insert(2,1) = 5;
-  A.insert(2,3) = 1;
-  A.insert(4,2) = 14;
-  A.insert(4,4) = 8;
-
-  vector<double> V;
-  vector<int> R,C;
-
-  int nr;
-  harwell_boeing(A,nr,V,R,C);
-  cout<<"V=[";
-  for_each(V.begin(),V.end(),&print<double>);
-  cout<<"];"<<endl;
-  cout<<"R=[";
-  for_each(R.begin(),R.end(),&print<int>);
-  cout<<"];"<<endl;
-  cout<<"C=[";
-  for_each(C.begin(),C.end(),&print<int>);
-  cout<<"];"<<endl;
-
-  return 0;
-}

examples/hello-world/example.cpp

@@ -1,22 +0,0 @@
-// Compile with GCC:
-// g++ -I/usr/local/igl/igl_lib/include -DIGL_HEADER_ONLY \
-//   -I/opt/local/include/eigen3 example.cpp -o example
-// Run with:
-// ./example ../shared/TinyTorus.obj
-#include <Eigen/Dense>
-#include <igl/readOBJ.h>
-#include <iostream>
-int main(int argc, char * argv[])
-{
-  if(argc>1)
-  {
-    Eigen::MatrixXd V;
-    Eigen::MatrixXi F;
-    igl::readOBJ(argv[1],V,F);
-    std::cout<<"Hello, mesh with "<<V.rows()<<" vertices!"<<std::endl;
-  }else{
-    std::cout<<"Hello, world!"<<std::endl;
-  }
-  return 0;
-}
-

examples/intersections/Makefile

@@ -1,28 +0,0 @@
-.PHONY: all
-
-# Shared flags etc.
-include ../Makefile.conf
-LIBIGL_LIB+=-liglcgal
-
-all: example
-
-.PHONY: example
-
-CGAL=/opt/local/
-CGAL_LIB=-L$(CGAL)/lib -lCGAL -lCGAL_Core -lgmp -lmpfr -lboost_thread-mt -lboost_system-mt
-CGAL_INC=-I$(CGAL)/include -I/usr/include/
-# This is absolutely necessary for Exact Construction
-CGAL_FLAGS=-frounding-math -fsignaling-nans 
-
-INC=$(LIBIGL_INC) $(ANTTWEAKBAR_INC) $(EIGEN3_INC) $(EMBREE_INC) $(CGAL_INC)
-LIB=$(OPENGL_LIB) $(GLUT_LIB) $(ANTTWEAKBAR_LIB) $(LIBIGL_LIB) $(EMBREE_LIB) $(CGAL_LIB)
-CFLAGS+=$(CGAL_FLAGS)
-
-example: example.o
-	g++ $(OPENMP) $(AFLAGS) $(CFLAGS) $(LIB) -o example example.o 
-
-example.o: example.cpp
-	g++ $(OPENMP) $(AFLAGS) $(CFLAGS) -c example.cpp -o example.o $(INC)
-clean:
-	rm -f example.o
-	rm -f example

examples/intersections/README.md

@@ -1,8 +0,0 @@
-To compute and visualize all facets participating in self-intersections issue:
-
-    ./example input.obj
-
-To compute and visualize all facets participating in intersections between mesh
-A and mesh B (ignoring self-intersections in each) issue:
-
-    ./example A.obj B.obj

examples/intersections/example.cpp

@@ -1,705 +0,0 @@
-#include <igl/Camera.h>
-#include <igl/opengl/OpenGL_convenience.h>
-#include <igl/barycenter.h>
-#include <igl/cat.h>
-#include <igl/opengl2/draw_floor.h>
-#include <igl/opengl2/draw_mesh.h>
-#include <igl/get_seconds.h>
-#include <igl/jet.h>
-#include <igl/list_to_matrix.h>
-#include <igl/material_colors.h>
-#include <igl/matlab_format.h>
-#include <igl/normalize_row_lengths.h>
-#include <igl/pathinfo.h>
-#include <igl/per_face_normals.h>
-#include <igl/polygon_mesh_to_triangle_mesh.h>
-#include <igl/quat_to_mat.h>
-#include <igl/readDMAT.h>
-#include <igl/readMESH.h>
-#include <igl/readOBJ.h>
-#include <igl/readOFF.h>
-#include <igl/readWRL.h>
-#include <igl/opengl/report_gl_error.h>
-#include <igl/snap_to_canonical_view_quat.h>
-#include <igl/snap_to_fixed_up.h>
-#include <igl/trackball.h>
-#include <igl/two_axis_valuator_fixed_up.h>
-#include <igl/writeOBJ.h>
-#include <igl/anttweakbar/ReAntTweakBar.h>
-#include <igl/cgal/remesh_self_intersections.h>
-#include <igl/cgal/intersect_other.h>
-
-#ifdef __APPLE__
-#  include <GLUT/glut.h>
-#else
-#  include <GL/glut.h>
-#endif
-
-#include <Eigen/Core>
-
-#include <vector>
-#include <iostream>
-#include <algorithm>
-
-struct State
-{
-  igl::Camera camera;
-} s;
-enum RotationType
-{
-  ROTATION_TYPE_IGL_TRACKBALL = 0,
-  ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP = 1,
-  NUM_ROTATION_TYPES = 2,
-} rotation_type;
-bool is_rotating = false;
-int down_x,down_y;
-igl::Camera down_camera;
-bool is_animating = false;
-double animation_start_time = 0;
-double ANIMATION_DURATION = 0.5;
-Eigen::Quaterniond animation_from_quat;
-Eigen::Quaterniond animation_to_quat;
-// Use vector for range-based `for`
-std::vector<State> undo_stack;
-std::vector<State> redo_stack;
-
-void push_undo()
-{
-  undo_stack.push_back(s);
-  // Clear
-  redo_stack = std::vector<State>();
-}
-
-void undo()
-{
-  using namespace std;
-  if(!undo_stack.empty())
-  {
-    redo_stack.push_back(s);
-    s = undo_stack.front();
-    undo_stack.pop_back();
-  }
-}
-
-void redo()
-{
-  using namespace std;
-  if(!redo_stack.empty())
-  {
-    undo_stack.push_back(s);
-    s = redo_stack.front();
-    redo_stack.pop_back();
-  }
-}
-
-void TW_CALL set_rotation_type(const void * value, void * clientData)
-{
-  using namespace Eigen;
-  using namespace std;
-  using namespace igl;
-  const RotationType old_rotation_type = rotation_type;
-  rotation_type = *(const RotationType *)(value);
-  if(rotation_type == ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP &&
-    old_rotation_type != ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP)
-  {
-    push_undo();
-    animation_from_quat = s.camera.m_rotation_conj;
-    snap_to_fixed_up(animation_from_quat,animation_to_quat);
-    // start animation
-    animation_start_time = get_seconds();
-    is_animating = true;
-  }
-}
-
-void TW_CALL get_rotation_type(void * value, void *clientData)
-{
-  RotationType * rt = (RotationType *)(value);
-  *rt = rotation_type;
-}
-
-// Width and height of window
-int width,height;
-// Position of light
-float light_pos[4] = {0.1,0.1,-0.9,0};
-// V,U  Vertex positions
-// C,D  Colors
-// N,W  Normals
-// mid  combined "centroid"
-Eigen::MatrixXd V,N,C,Z,mid,U,W,D,VU;
-// F,G  faces
-Eigen::MatrixXi F,G;
-bool has_other = false;
-bool show_A = true;
-bool show_B = true;
-int selected_col = 0;
-// Bounding box diagonal length
-double bbd;
-// Running ambient occlusion
-Eigen::VectorXd S;
-int tot_num_samples = 0;
-#define REBAR_NAME "temp.rbr"
-igl::anttweakbar::ReTwBar rebar; // Pointer to the tweak bar
-
-void reshape(int width,int height)
-{
-  using namespace std;
-  // Save width and height
-  ::width = width;
-  ::height = height;
-  glMatrixMode(GL_PROJECTION);
-  glLoadIdentity();
-  glViewport(0,0,width,height);
-  // Send the new window size to AntTweakBar
-  TwWindowSize(width, height);
-  // Set aspect for all cameras
-  s.camera.m_aspect = (double)width/(double)height;
-  for(auto & s : undo_stack)
-  {
-    s.camera.m_aspect = (double)width/(double)height;
-  }
-  for(auto & s : redo_stack)
-  {
-    s.camera.m_aspect = (double)width/(double)height;
-  }
-}
-
-void push_scene()
-{
-  using namespace igl;
-  using namespace std;
-  glMatrixMode(GL_PROJECTION);
-  glPushMatrix();
-  glLoadIdentity();
-  auto & camera = s.camera;
-  gluPerspective(camera.m_angle,camera.m_aspect,camera.m_near,camera.m_far);
-  glMatrixMode(GL_MODELVIEW);
-  glPushMatrix();
-  glLoadIdentity();
-  gluLookAt(
-    camera.eye()(0), camera.eye()(1), camera.eye()(2),
-    camera.at()(0), camera.at()(1), camera.at()(2),
-    camera.up()(0), camera.up()(1), camera.up()(2));
-}
-
-void pop_scene()
-{
-  glMatrixMode(GL_PROJECTION);
-  glPopMatrix();
-  glMatrixMode(GL_MODELVIEW);
-  glPopMatrix();
-}
-
-void pop_object()
-{
-  glPopMatrix();
-}
-
-// Scale and shift for object
-void push_object()
-{
-  glPushMatrix();
-  glScaled(2./bbd,2./bbd,2./bbd);
-  glTranslated(-mid(0,0),-mid(0,1),-mid(0,2));
-}
-
-// Set up double-sided lights
-void lights()
-{
-  using namespace std;
-  glEnable(GL_LIGHTING);
-  glLightModelf(GL_LIGHT_MODEL_TWO_SIDE,GL_TRUE);
-  glEnable(GL_LIGHT0);
-  glEnable(GL_LIGHT1);
-  float amb[4];
-  amb[0] = amb[1] = amb[2] = 0;
-  amb[3] = 1.0;
-  float diff[4] = {0.0,0.0,0.0,0.0};
-  diff[0] = diff[1] = diff[2] = (1.0 - 0/0.4);;
-  diff[3] = 1.0;
-  float zeros[4] = {0.0,0.0,0.0,0.0};
-  float pos[4];
-  copy(light_pos,light_pos+4,pos);
-  glLightfv(GL_LIGHT0,GL_AMBIENT,amb);
-  glLightfv(GL_LIGHT0,GL_DIFFUSE,diff);
-  glLightfv(GL_LIGHT0,GL_SPECULAR,zeros);
-  glLightfv(GL_LIGHT0,GL_POSITION,pos);
-  pos[0] *= -1;
-  pos[1] *= -1;
-  pos[2] *= -1;
-  glLightfv(GL_LIGHT1,GL_AMBIENT,amb);
-  glLightfv(GL_LIGHT1,GL_DIFFUSE,diff);
-  glLightfv(GL_LIGHT1,GL_SPECULAR,zeros);
-  glLightfv(GL_LIGHT1,GL_POSITION,pos);
-}
-
-const float back[4] = {30.0/255.0,30.0/255.0,50.0/255.0,0};
-void display()
-{
-  using namespace Eigen;
-  using namespace igl;
-  using namespace std;
-
-  glClearColor(back[0],back[1],back[2],0);
-  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
-  if(is_animating)
-  {
-    double t = (get_seconds() - animation_start_time)/ANIMATION_DURATION;
-    if(t > 1)
-    {
-      t = 1;
-      is_animating = false;
-    }
-    const Quaterniond q = animation_from_quat.slerp(t,animation_to_quat).normalized();
-    s.camera.orbit(q.conjugate());
-  }
-
-  glDisable(GL_LIGHTING);
-  lights();
-  push_scene();
-  glEnable(GL_DEPTH_TEST);
-  glDepthFunc(GL_LEQUAL);
-  glEnable(GL_NORMALIZE);
-  glEnable(GL_COLOR_MATERIAL);
-  glColorMaterial(GL_FRONT_AND_BACK,GL_AMBIENT_AND_DIFFUSE);
-  push_object();
-
-  // Draw the model
-  // Set material properties
-  glEnable(GL_COLOR_MATERIAL);
-
-  const auto draw = [](
-    const MatrixXd & V,
-    const MatrixXi & F,
-    const MatrixXd & N,
-    const MatrixXd & C)
-  {
-    glEnable(GL_COLOR_MATERIAL);
-    glEnable(GL_POLYGON_OFFSET_FILL); // Avoid Stitching!
-    glPolygonOffset(1.0,1);
-    glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
-    igl::opengl2::draw_mesh(V,F,N,C);
-    glPolygonMode(GL_FRONT_AND_BACK,GL_LINE);
-    glDisable(GL_COLOR_MATERIAL);
-    const float black[4] = {0,0,0,1};
-    glColor4fv(black);
-    glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT,  black);
-    glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE,  black);
-    glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, black);
-    glLightfv(GL_LIGHT0, GL_AMBIENT, black);
-    glLightfv(GL_LIGHT0, GL_DIFFUSE, black);
-    glLineWidth(1.0);
-    glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
-    igl::opengl2::draw_mesh(V,F,N,C);
-    glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
-    glEnable(GL_COLOR_MATERIAL);
-  };
-  if(show_A)
-  {
-    draw(V,F,N,C);
-  }
-  if(show_B)
-  {
-    draw(U,G,W,D);
-  }
-
-  pop_object();
-
-  // Draw a nice floor
-  glPushMatrix();
-  const double floor_offset =
-    -2./bbd*(VU.col(1).maxCoeff()-mid(1));
-  glTranslated(0,floor_offset,0);
-  const float GREY[4] = {0.5,0.5,0.6,1.0};
-  const float DARK_GREY[4] = {0.2,0.2,0.3,1.0};
-  igl::opengl2::draw_floor(GREY,DARK_GREY);
-  glPopMatrix();
-
-  pop_scene();
-
-  igl::opengl::report_gl_error();
-
-  TwDraw();
-  glutSwapBuffers();
-  if(is_animating)
-  {
-    glutPostRedisplay();
-  }
-}
-
-void mouse_wheel(int wheel, int direction, int mouse_x, int mouse_y)
-{
-  using namespace std;
-  using namespace igl;
-  using namespace Eigen;
-  GLint viewport[4];
-  glGetIntegerv(GL_VIEWPORT,viewport);
-  if(wheel == 0 && TwMouseMotion(mouse_x, viewport[3] - mouse_y))
-  {
-    static double mouse_scroll_y = 0;
-    const double delta_y = 0.125*direction;
-    mouse_scroll_y += delta_y;
-    TwMouseWheel(mouse_scroll_y);
-    return;
-  }
-  push_undo();
-  auto & camera = s.camera;
-  if(wheel==0)
-  {
-    // factor of zoom change
-    double s = (1.-0.01*direction);
-    //// FOV zoom: just widen angle. This is hardly ever appropriate.
-    //camera.m_angle *= s;
-    //camera.m_angle = min(max(camera.m_angle,1),89);
-    camera.push_away(s);
-  }else
-  {
-    // Dolly zoom:
-    camera.dolly_zoom((double)direction*1.0);
-  }
-}
-
-void mouse(int glutButton, int glutState, int mouse_x, int mouse_y)
-{
-  using namespace std;
-  using namespace Eigen;
-  using namespace igl;
-  bool tw_using = TwEventMouseButtonGLUT(glutButton,glutState,mouse_x,mouse_y);
-  switch(glutButton)
-  {
-    case GLUT_RIGHT_BUTTON:
-    case GLUT_LEFT_BUTTON:
-    {
-      switch(glutState)
-      {
-        case 1:
-          // up
-          glutSetCursor(GLUT_CURSOR_LEFT_ARROW);
-          is_rotating = false;
-          break;
-        case 0:
-          // down
-          if(!tw_using)
-          {
-            glutSetCursor(GLUT_CURSOR_CYCLE);
-            // collect information for trackball
-            is_rotating = true;
-            down_camera = s.camera;
-            down_x = mouse_x;
-            down_y = mouse_y;
-          }
-        break;
-      }
-      break;
-    }
-    // Scroll down
-    case 3:
-    {
-      mouse_wheel(0,-1,mouse_x,mouse_y);
-      break;
-    }
-    // Scroll up
-    case 4:
-    {
-      mouse_wheel(0,1,mouse_x,mouse_y);
-      break;
-    }
-    // Scroll left
-    case 5:
-    {
-      mouse_wheel(1,-1,mouse_x,mouse_y);
-      break;
-    }
-    // Scroll right
-    case 6:
-    {
-      mouse_wheel(1,1,mouse_x,mouse_y);
-      break;
-    }
-  }
-  glutPostRedisplay();
-}
-
-void mouse_drag(int mouse_x, int mouse_y)
-{
-  using namespace igl;
-  using namespace Eigen;
-
-  if(is_rotating)
-  {
-    glutSetCursor(GLUT_CURSOR_CYCLE);
-    Quaterniond q;
-    auto & camera = s.camera;
-    switch(rotation_type)
-    {
-      case ROTATION_TYPE_IGL_TRACKBALL:
-      {
-        // Rotate according to trackball
-        igl::trackball<double>(
-          width,
-          height,
-          2.0,
-          down_camera.m_rotation_conj.coeffs().data(),
-          down_x,
-          down_y,
-          mouse_x,
-          mouse_y,
-          q.coeffs().data());
-          break;
-      }
-      case ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP:
-      {
-        // Rotate according to two axis valuator with fixed up vector
-        two_axis_valuator_fixed_up(
-          width, height,
-          2.0,
-          down_camera.m_rotation_conj,
-          down_x, down_y, mouse_x, mouse_y,
-          q);
-        break;
-      }
-      default:
-        break;
-    }
-    camera.orbit(q.conjugate());
-  }else
-  {
-    TwEventMouseMotionGLUT(mouse_x, mouse_y);
-  }
-  glutPostRedisplay();
-}
-
-
-
-void color_selfintersections(
-  const Eigen::MatrixXd & V,
-  const Eigen::MatrixXi & F,
-  Eigen::MatrixXd & C)
-{
-  using namespace igl;
-  using namespace igl::cgal;
-  using namespace Eigen;
-  using namespace std;
-  MatrixXd SV;
-  MatrixXi SF,IF;
-  VectorXi J,IM;
-  RemeshSelfIntersectionsParam params;
-  params.detect_only = false;
-  remesh_self_intersections(V,F,params,SV,SF,IF,J,IM);
-  writeOBJ("FUCK.obj",SV,SF);
-  C.resize(F.rows(),3);
-  C.col(0).setConstant(0.4);
-  C.col(1).setConstant(0.8);
-  C.col(2).setConstant(0.3);
-  for(int f = 0;f<IF.rows();f++)
-  {
-    C.row(IF(f,0)) = RowVector3d(1,0.4,0.4);
-    C.row(IF(f,1)) = RowVector3d(1,0.4,0.4);
-  }
-}
-
-void color_intersections(
-  const Eigen::MatrixXd & V,
-  const Eigen::MatrixXi & F,
-  const Eigen::MatrixXd & U,
-  const Eigen::MatrixXi & G,
-  Eigen::MatrixXd & C,
-  Eigen::MatrixXd & D)
-{
-  using namespace igl;
-  using namespace igl::cgal;
-  using namespace Eigen;
-  MatrixXi IF;
-  const bool first_only = false;
-  intersect_other(V,F,U,G,first_only,IF);
-  C.resize(F.rows(),3);
-  C.col(0).setConstant(0.4);
-  C.col(1).setConstant(0.8);
-  C.col(2).setConstant(0.3);
-  D.resize(G.rows(),3);
-  D.col(0).setConstant(0.4);
-  D.col(1).setConstant(0.3);
-  D.col(2).setConstant(0.8);
-  for(int f = 0;f<IF.rows();f++)
-  {
-    C.row(IF(f,0)) = RowVector3d(1,0.4,0.4);
-    D.row(IF(f,1)) = RowVector3d(0.8,0.7,0.3);
-  }
-}
-
-void key(unsigned char key, int mouse_x, int mouse_y)
-{
-  using namespace std;
-  switch(key)
-  {
-    // ESC
-    case char(27):
-      rebar.save(REBAR_NAME);
-    // ^C
-    case char(3):
-      exit(0);
-    default:
-      if(!TwEventKeyboardGLUT(key,mouse_x,mouse_y))
-      {
-        cout<<"Unknown key command: "<<key<<" "<<int(key)<<endl;
-      }
-  }
-
-  glutPostRedisplay();
-}
-
-int main(int argc, char * argv[])
-{
-  using namespace Eigen;
-  using namespace igl;
-  using namespace std;
-
-  // init mesh
-  string filename = "../shared/truck.obj";
-  string filename_other = "";
-  switch(argc)
-  {
-    case 3:
-      // Read and prepare mesh
-      filename_other = argv[2];
-      has_other=true;
-      // fall through
-    case 2:
-      // Read and prepare mesh
-      filename = argv[1];
-      break;
-    default:
-    cerr<<"Usage:"<<endl<<"    ./example input.obj [other.obj]"<<endl;
-    cout<<endl<<"Opening default mesh..."<<endl;
-  }
-
-  const auto read = []
-    (const string & filename, MatrixXd & V, MatrixXi & F, MatrixXd & N) -> bool
-  {
-    // dirname, basename, extension and filename
-    string d,b,ext,f;
-    pathinfo(filename,d,b,ext,f);
-    // Convert extension to lower case
-    transform(ext.begin(), ext.end(), ext.begin(), ::tolower);
-    vector<vector<double > > vV,vN,vTC;
-    vector<vector<int > > vF,vFTC,vFN;
-    if(ext == "obj")
-    {
-      // Convert extension to lower case
-      if(!igl::readOBJ(filename,vV,vTC,vN,vF,vFTC,vFN))
-      {
-        return false;
-      }
-    }else if(ext == "off")
-    {
-      // Convert extension to lower case
-      if(!igl::readOFF(filename,vV,vF,vN))
-      {
-        return false;
-      }
-    }else if(ext == "wrl")
-    {
-      // Convert extension to lower case
-      if(!igl::readWRL(filename,vV,vF))
-      {
-        return false;
-      }
-    //}else
-    //{
-    //  // Convert extension to lower case
-    //  MatrixXi T;
-    //  if(!igl::readMESH(filename,V,T,F))
-    //  {
-    //    return false;
-    //  }
-    //  //if(F.size() > T.size() || F.size() == 0)
-    //  {
-    //    boundary_facets(T,F);
-    //  }
-    }
-    if(vV.size() > 0)
-    {
-      if(!list_to_matrix(vV,V))
-      {
-        return false;
-      }
-      polygon_mesh_to_triangle_mesh(vF,F);
-    }
-    // Compute normals, centroid, colors, bounding box diagonal
-    per_face_normals(V,F,N);
-    return true;
-  };
-
-  if(!read(filename,V,F,N))
-  {
-    return 1;
-  }
-  if(has_other)
-  {
-    if(!read(argv[2],U,G,W))
-    {
-      return 1;
-    }
-    cat(1,V,U,VU);
-    color_intersections(V,F,U,G,C,D);
-  }else
-  {
-    VU = V;
-    color_selfintersections(V,F,C);
-  }
-  mid = 0.5*(VU.colwise().maxCoeff() + VU.colwise().minCoeff());
-  bbd = (VU.colwise().maxCoeff() - VU.colwise().minCoeff()).maxCoeff();
-
-  // Init glut
-  glutInit(&argc,argv);
-
-  if( !TwInit(TW_OPENGL, NULL) )
-  {
-    // A fatal error occured
-    fprintf(stderr, "AntTweakBar initialization failed: %s\n", TwGetLastError());
-    return 1;
-  }
-  // Create a tweak bar
-  rebar.TwNewBar("TweakBar");
-  rebar.TwAddVarRW("camera_rotation", TW_TYPE_QUAT4D,
-    s.camera.m_rotation_conj.coeffs().data(), "open readonly=true");
-  s.camera.push_away(3);
-  s.camera.dolly_zoom(25-s.camera.m_angle);
-  TwType RotationTypeTW = igl::anttweakbar::ReTwDefineEnumFromString("RotationType",
-    "igl_trackball,two-a...-fixed-up");
-  rebar.TwAddVarCB( "rotation_type", RotationTypeTW,
-    set_rotation_type,get_rotation_type,NULL,"keyIncr=] keyDecr=[");
-  if(has_other)
-  {
-    rebar.TwAddVarRW("show_A",TW_TYPE_BOOLCPP,&show_A, "key=a",false);
-    rebar.TwAddVarRW("show_B",TW_TYPE_BOOLCPP,&show_B, "key=b",false);
-  }
-  rebar.load(REBAR_NAME);
-
-  glutInitDisplayString("rgba depth double samples>=8 ");
-  glutInitWindowSize(glutGet(GLUT_SCREEN_WIDTH)/2.0,glutGet(GLUT_SCREEN_HEIGHT));
-  glutCreateWindow("mesh-intersections");
-  glutDisplayFunc(display);
-  glutReshapeFunc(reshape);
-  glutKeyboardFunc(key);
-  glutMouseFunc(mouse);
-  glutMotionFunc(mouse_drag);
-  glutPassiveMotionFunc(
-    [](int x, int y)
-    {
-      TwEventMouseMotionGLUT(x,y);
-      glutPostRedisplay();
-    });
-  static std::function<void(int)> timer_bounce;
-  auto timer = [] (int ms) {
-    timer_bounce(ms);
-  };
-  timer_bounce = [&] (int ms) {
-    glutTimerFunc(ms, timer, ms);
-    glutPostRedisplay();
-  };
-  glutTimerFunc(500, timer, 500);
-
-  glutMainLoop();
-  return 0;
-}

examples/is_dir/Makefile

@@ -1,21 +0,0 @@
-.PHONY: all
-
-# Shared flags etc.
-include ../Makefile.conf
-
-all: example
-
-.PHONY: example
-
-CFLAGS+=-g
-inc=$(LIBIGL_INC)
-lib=$(LIBIGL_LIB)
-
-example: example.o
-	g++ $(CFLAGS) -o example example.o $(lib)
-
-example.o: example.cpp
-	g++ $(CFLAGS) -c example.cpp -o example.o $(inc)
-clean:
-	rm -f example.o
-	rm -f example

examples/is_dir/README

@@ -1,18 +0,0 @@
-This is a simple example program that shows how to use the is_dir function of
-is_dir.h in the igl library.
-
-
-To Build:
-  make
-
-To Run:
-  ./example [path_1] [path_2] ... [path_n]
-
-Example Run #1:
-  Issuing:
-    ./example . .. example.cpp non-existant-file
-  should produce:
-    is_dir(.) --> TRUE
-    is_dir(..) --> TRUE
-    is_dir(example.cpp) --> FALSE
-    is_dir(non-existant-file) --> FALSE

examples/is_dir/example.cpp

@@ -1,18 +0,0 @@
-#include <igl/is_dir.h>
-using namespace igl;
-#include <cstdio>
-
-int main(int argc, char * argv[])
-{
-  if(argc <= 1)
-  {
-    printf("USAGE:\n  ./example [path_1] [path_2] ... [path_n]\n");
-    return 1;
-  }
-  // loop over arguments
-  for(int i = 1; i < argc; i++)
-  {
-    printf("is_dir(%s) --> %s\n",argv[i],(is_dir(argv[i])?"TRUE":"FALSE"));
-  }
-  return 0;
-}

examples/marching_cubes/Makefile

@@ -1,21 +0,0 @@
-.PHONY: all
-
-all: example
-
-.PHONY: example
-
-# Shared flags etc.
-include ../Makefile.conf
-
-CFLAGS+=-g
-inc=$(LIBIGL_INC) $(EIGEN3_INC)
-lib=$(LIBIGL_LIB)
-
-example: example.o
-	g++ $(CFLAGS) -o example example.o $(lib)
-
-example.o: example.cpp
-	g++ $(CFLAGS) -c example.cpp -o example.o $(inc)
-clean:
-	rm -f example.o
-	rm -f example

examples/marching_cubes/example.cpp

@@ -1,73 +0,0 @@
-#include <igl/marching_cubes.h>
-#include <iostream>
-#include <cstdio>
-
-#include "igl/MCTables.hh"
-
-typedef float ScalarType;
-typedef unsigned IndexType;
-int main(int argc, char * argv[])
-{
-  Eigen::Matrix<ScalarType, 1, 3> bb_min, bb_max;
-  bb_min<<0.,0.,0.;
-  bb_max<<1.,1.,1.;
-  
-  //diagonal
-  Eigen::Matrix<ScalarType, 1, 3> diff = bb_max - bb_min;
-  
-  
-  //center of the sphere
-  Eigen::Matrix<ScalarType, 1, 3> center = 0.5 * (bb_min + bb_max);
-  
-  IndexType xres, yres, zres;
-  xres = yres = zres = 10;
-  ScalarType radius = 0.42;
-
-  //steps in x,y,z direction
-  ScalarType dx = diff[0] / (ScalarType)(xres-1);
-  ScalarType dy = diff[1] / (ScalarType)(yres-1);
-  ScalarType dz = diff[2] / (ScalarType)(zres-1);
-  
-  
-  Eigen::Matrix<ScalarType, Eigen::Dynamic, 3> points(xres*yres*zres,3);
-  Eigen::Matrix<ScalarType, Eigen::Dynamic, 1> values(xres*yres*zres,1);
-  
-  Eigen::Matrix<ScalarType, Eigen::Dynamic, 3> vertices;
-  
-  Eigen::Matrix<IndexType, Eigen::Dynamic, 3> faces;
-
-  std::cerr<<"Sphere -- construct grid"<<std::endl;
-  for (unsigned int x=0; x<xres; ++x)
-    for (unsigned int y=0; y<yres; ++y)
-      for (unsigned int z=0; z<zres; ++z)
-      {
-        int index = x + y*xres + z*xres*yres;
-        points.row(index) = bb_min + 
-        ScalarType(x)*Eigen::Matrix<ScalarType, 1, 3>(dx,0.,0.) + 
-        ScalarType(y)*Eigen::Matrix<ScalarType, 1, 3>(0.,dy,0.) + 
-        ScalarType(z)*Eigen::Matrix<ScalarType, 1, 3>(0.,0.,dz);
-        
-        values[index] = (points.row(index) - center).squaredNorm() - radius*radius;
-      }
-  
-  
-  std::cerr<<"Sphere -- marching cubes"<<std::endl;
-  igl::marching_cubes(values, 
-                      points, 
-                      xres, 
-                      yres, 
-                      zres, 
-                      vertices,
-                      faces);
-
-  std::cerr<<"Sphere -- saving"<<std::endl;
-  FILE * fid = fopen("sphere.obj","w");
-  for (unsigned i = 0; i<vertices.rows(); ++i)
-    fprintf(fid,"v %.10g %.10g %.10g\n",vertices(i,0),vertices(i,1),vertices(i,2));
-  for (unsigned i = 0; i<faces.rows(); ++i)
-    fprintf(fid,"f %d %d %d\n",faces(i,0)+1,faces(i,1)+1,faces(i,2)+1);
-  fclose(fid);
-
-  std::cerr<<"Sphere -- done."<<std::endl;
-  return 0;
-}

examples/meshio/Makefile

@@ -1,21 +0,0 @@
-.PHONY: all
-
-# Shared flags etc.
-include ../Makefile.conf
-
-all: example
-
-.PHONY: example
-
-CFLAGS+=-g
-inc=$(LIBIGL_INC) $(EIGEN3_INC)
-lib=$(LIBIGL_LIB)
-
-example: example.o
-	g++ $(CFLAGS) -o example example.o $(lib)
-
-example.o: example.cpp
-	g++ $(CFLAGS) -c example.cpp -o example.o $(inc)
-clean:
-	rm -f example.o
-	rm -f example

examples/meshio/README

@@ -1,9 +0,0 @@
-This is a simple example program that shows how to use the mesh IO functions of
-readOBJ.h etc. in the igl library.
-
-
-To Build:
-  make
-
-To Run:
-  ./example [path_1] [path_2] ... [path_n]

examples/meshio/cube.obj

@@ -1,33 +0,0 @@
-# cube.obj
-#
- 
-g cube
- 
-v  0.0  0.0  0.0
-v  0.0  0.0  1.0
-v  0.0  1.0  0.0
-v  0.0  1.0  1.0
-v  1.0  0.0  0.0
-v  1.0  0.0  1.0
-v  1.0  1.0  0.0
-v  1.0  1.0  1.0
-
-vn  0.0  0.0  1.0
-vn  0.0  0.0 -1.0
-vn  0.0  1.0  0.0
-vn  0.0 -1.0  0.0
-vn  1.0  0.0  0.0
-vn -1.0  0.0  0.0
- 
-f  1//2  7//2  5//2
-f  1//2  3//2  7//2 
-f  1//6  4//6  3//6 
-f  1//6  2//6  4//6 
-f  3//3  8//3  7//3 
-f  3//3  4//3  8//3 
-f  5//5  7//5  8//5 
-f  5//5  8//5  6//5 
-f  1//4  5//4  6//4 
-f  1//4  6//4  2//4 
-f  2//1  6//1  8//1 
-f  2//1  8//1  4//1 

examples/meshio/example.cpp

@@ -1,65 +0,0 @@
-#include <igl/readOBJ.h>
-#include <iostream>
-
-#include <cstdio>
-#include <vector>
-#include <algorithm>
-#include <functional>
-
-#include <Eigen/Dense>
-
-using namespace igl;
-using namespace std;
-using namespace Eigen;
-
-// Template:
-//   T  type that can be safely cast to float
-// Inputs:
-//   vv  vector of vectors of type T
-template <typename T>
-void print_vector_of_vectors_as_floats(const std::vector<std::vector<T > > & vv)
-{
-  for(int i = 0;i<vv.size();i++)
-  {
-    for(int j = 0;j<vv[i].size();j++)
-    {
-      printf("%g ",(float)(vv[i][j]));
-    }
-    printf("\n");
-  }
-}
-
-int main(int argc, char * argv[])
-{
-  if(argc <= 1)
-  {
-    printf("USAGE:\n  ./example [path_1] [path_2] ... [path_n]\n");
-    return 1;
-  }
-  vector<std::vector<double> > V,TC,N;
-  vector<std::vector<int> > F,FTC,FN;
-  // loop over arguments
-  for(int i = 1; i < argc; i++)
-  {
-    if(i != 1)
-    {
-      printf("-----------------------------------------------------------\n");
-    }
-    readOBJ(argv[i],V,TC,N,F,FTC,FN);
-    cout<<"V=[";  print_vector_of_vectors_as_floats(V);  cout<<"];"<<endl;
-    cout<<"TC=["; print_vector_of_vectors_as_floats(TC); cout<<"];"<<endl;
-    cout<<"N=[";  print_vector_of_vectors_as_floats(N);  cout<<"];"<<endl;
-    cout<<"F=[";  print_vector_of_vectors_as_floats(F);  cout<<"];"<<endl;
-    cout<<"FTC=[";print_vector_of_vectors_as_floats(FTC);cout<<"];"<<endl;
-    cout<<"FN=["; print_vector_of_vectors_as_floats(FN); cout<<"];"<<endl;
-    // Eigen (V,F) style
-    MatrixXd EV;
-    MatrixXi EF;
-    readOBJ(argv[i],EV,EF);
-    cout<<"EV=["<<EV<<"];"<<endl;
-    cout<<"EF=["<<EF<<"];"<<endl;
-  }
-
-
-  return 0;
-}

examples/meshio/torus.obj

@@ -1,88 +0,0 @@
-####
-#
-# OBJ File Generated by Meshlab
-#
-####
-# Object TinyTorus.obj
-#
-# Vertices: 24
-# Faces: 48
-#
-####
-v -2.000000 0.000000 0.000000
-v -3.000000 0.000000 -1.000000
-v -4.000000 0.000000 -0.000001
-v -3.000000 0.000000 1.000000
-v -1.000000 -1.732050 0.000000
-v -1.500000 -2.598080 -1.000000
-v -2.000000 -3.464100 -0.000001
-v -1.500000 -2.598080 1.000000
-v 1.000000 -1.732050 0.000000
-v 1.500000 -2.598080 -1.000000
-v 2.000000 -3.464100 -0.000001
-v 1.500000 -2.598080 1.000000
-v 2.000000 0.000000 0.000000
-v 3.000000 0.000000 -1.000000
-v 4.000000 0.000000 -0.000001
-v 3.000000 0.000000 1.000000
-v 1.000000 1.732050 0.000000
-v 1.500000 2.598080 -1.000000
-v 2.000000 3.464100 -0.000001
-v 1.500000 2.598080 1.000000
-v -1.000000 1.732050 0.000000
-v -1.500000 2.598080 -1.000000
-v -2.000000 3.464100 -0.000001
-v -1.500000 2.598080 1.000000
-# 24 vertices, 0 vertices normals
-
-f 2 1 6
-f 5 6 1
-f 3 2 7
-f 6 7 2
-f 4 3 8
-f 7 8 3
-f 1 4 5
-f 8 5 4
-f 6 5 10
-f 9 10 5
-f 7 6 11
-f 10 11 6
-f 8 7 12
-f 11 12 7
-f 5 8 9
-f 12 9 8
-f 10 9 14
-f 13 14 9
-f 11 10 15
-f 14 15 10
-f 12 11 16
-f 15 16 11
-f 9 12 13
-f 16 13 12
-f 14 13 18
-f 17 18 13
-f 15 14 19
-f 18 19 14
-f 16 15 20
-f 19 20 15
-f 13 16 17
-f 20 17 16
-f 18 17 22
-f 21 22 17
-f 19 18 23
-f 22 23 18
-f 20 19 24
-f 23 24 19
-f 17 20 21
-f 24 21 20
-f 22 21 2
-f 1 2 21
-f 23 22 3
-f 2 3 22
-f 24 23 4
-f 3 4 23
-f 21 24 1
-f 4 1 24
-# 48 faces, 0 coords texture
-
-# End of File

examples/mode/Makefile

@@ -1,21 +0,0 @@
-.PHONY: all
-
-# Shared flags etc.
-include ../Makefile.conf
-
-all: example
-
-.PHONY: example
-
-CFLAGS+=-g
-inc=$(LIBIGL_INC) $(EIGEN3_INC)
-lib=$(LIBIGL_LIB)
-
-example: example.o
-	g++ $(CFLAGS) -o example example.o $(lib)
-
-example.o: example.cpp
-	g++ $(CFLAGS) -c example.cpp -o example.o $(inc)
-clean:
-	rm -f example.o
-	rm -f example

examples/mode/README

@@ -1,9 +0,0 @@
-This is a simple example program that shows how to use the mode function on
-eigen matrices like matlab's mode(X,dim) function
-
-
-To Build:
-  make
-
-To Run:
-  ./example

examples/mode/example.cpp

@@ -1,34 +0,0 @@
-// g++ -o main main.cpp -I. -I/usr/local/include/eigen3
-#include <igl/mode.h>
-#include <Eigen/Core>
-#include <iostream>
-
-using namespace std;
-using namespace igl;
-using namespace Eigen;
-
-
-template <class T>
-void matlab_print(const string name, const T & X)
-{
-  cout<<name<<"=["<<endl<<X<<endl<<"];"<<endl;
-}
-
-int main(int argc, char * argv[])
-{
-  Eigen::MatrixXd X(3,4);
-  X << 
-    3,5,4,5,
-    1,2,4,2,
-    1,1,2,5;
-  matlab_print("X",X);
-
-  // Sorted output matrix
-  Eigen::Matrix<double,Dynamic,1> M1;
-  mode(X,1,M1);
-  matlab_print("M1",M1);
-
-  Eigen::Matrix<double,Dynamic,1> M2;
-  mode(X,2,M2);
-  matlab_print("M2",M2);
-}

examples/multi-viewport/Makefile

@@ -1,23 +0,0 @@
-.PHONY: all
-
-# Shared flags etc.
-
-all: example 
-
-.PHONY:  example
-
-include ../Makefile.conf
-
-CFLAGS+=-std=c++11 -g -Wno-deprecated-declarations
-
-INC=$(LIBIGL_INC) $(ANTTWEAKBAR_INC) $(EIGEN3_INC)
-LIB=$(OPENGL_LIB) $(GLUT_LIB) $(ANTTWEAKBAR_LIB) $(LIBIGL_LIB)
-
-example: example.o
-	g++ $(OPENMP) $(AFLAGS) $(CFLAGS) -o example example.o $(LIB)
-
-example.o: example.cpp
-	g++ $(OPENMP) $(AFLAGS) $(CFLAGS) -c example.cpp -o example.o $(INC)
-clean:
-	rm -f example.o
-	rm -f example

examples/multi-viewport/example.cpp

@@ -1,544 +0,0 @@
-#include <igl/Camera.h>
-#include <igl/EPS.h>
-#include <igl/opengl/OpenGL_convenience.h>
-#include <igl/STR.h>
-#include <igl/Viewport.h>
-#include <igl/canonical_quaternions.h>
-#include <igl/opengl2/draw_beach_ball.h>
-#include <igl/opengl2/draw_mesh.h>
-#include <igl/normalize_row_lengths.h>
-#include <igl/per_face_normals.h>
-#include <igl/opengl2/project.h>
-#include <igl/quat_to_mat.h>
-#include <igl/read_triangle_mesh.h>
-#include <igl/opengl/report_gl_error.h>
-#include <igl/snap_to_canonical_view_quat.h>
-#include <igl/trackball.h>
-#include <igl/opengl2/unproject.h>
-#include <igl/opengl2/unproject_to_zero_plane.h>
-
-#ifdef __APPLE__
-#  include <OpenGL/gl.h>
-#  include <OpenGL/glu.h>
-#  include <GLUT/glut.h>
-#else
-#  include <GL/glut.h>
-#endif
-#include <Eigen/Core>
-
-#include <vector>
-#include <iostream>
-#include <string>
-#include <algorithm>
-#define IGL_HEADER_ONLY
-#include <igl/opengl2/draw_floor.h>
-
-#define NUM_VIEWPORTS 4
-class AugViewport : public igl::Viewport
-{
-  public:
-    igl::Camera camera;
-} viewports[NUM_VIEWPORTS];
-double horiz = 0.5;
-double vert = 0.5;
-bool horiz_on = false, vert_on = false;
-
-// Width and height of window
-int width,height;
-// information at mouse down
-igl::Camera down_camera;
-bool trackball_on = false;
-int down_mouse_x,down_mouse_y,move_x,move_y;
-int down_vp;
-// Position of light
-float light_pos[4] = {0.1,0.1,-0.9,0};
-// Vertex positions, normals, colors and centroid
-Eigen::MatrixXd V,N,C,mean;
-// Bounding box diagonal length
-double bbd;
-// Faces
-Eigen::MatrixXi F;
-Eigen::Vector3d ball;
-
-
-void init_viewports()
-{
-  using namespace igl;
-  using namespace std;
-  for(auto & vp : viewports)
-  {
-    vp.camera.push_away(5.);
-  }
-  viewports[0].camera.dolly_zoom(0.-viewports[0].camera.m_angle);
-  viewports[1].camera.dolly_zoom(0.-viewports[1].camera.m_angle);
-  viewports[2].camera.dolly_zoom(0.-viewports[2].camera.m_angle);
-  viewports[3].camera.dolly_zoom(25.-viewports[3].camera.m_angle);
-  // Above view
-  double XZ_PLANE_QUAT_D_FLIP[4];
-  copy(XZ_PLANE_QUAT_D,XZ_PLANE_QUAT_D+4,XZ_PLANE_QUAT_D_FLIP);
-  XZ_PLANE_QUAT_D_FLIP[0] *= -1.0;
-  // Straight on
-  copy(
-    XZ_PLANE_QUAT_D_FLIP,
-    XZ_PLANE_QUAT_D_FLIP+4,
-    viewports[0].camera.m_rotation_conj.coeffs().data());
-  // Left side view
-  copy(
-    XY_PLANE_QUAT_D,
-    XY_PLANE_QUAT_D+4,
-    viewports[1].camera.m_rotation_conj.coeffs().data());
-  copy(
-    CANONICAL_VIEW_QUAT_D[14],
-    CANONICAL_VIEW_QUAT_D[14]+4,
-    viewports[2].camera.m_rotation_conj.coeffs().data());
-  // Straight on
-  copy(
-    XY_PLANE_QUAT_D,
-    XY_PLANE_QUAT_D+4,
-    viewports[3].camera.m_rotation_conj.coeffs().data());
-}
-
-const double BAR_THICKNESS = 3.0;
-void clamp(const double horiz, const double vert, double & eff_h, double & eff_v)
-{
-  eff_h = horiz;
-  eff_v = vert;
-  const double MIN_H = (BAR_THICKNESS/2.0)/(double)height;
-  const double MIN_V = (BAR_THICKNESS/2.0)/(double)width;
-  eff_h = eff_h < MIN_H ? MIN_H : eff_h;
-  eff_v = eff_v < MIN_V ? MIN_V : eff_v;
-  eff_h = eff_h > (1.0-MIN_H) ? (1.0-MIN_H) : eff_h;
-  eff_v = eff_v > (1.0-MIN_V) ? (1.0-MIN_V) : eff_v;
-}
-
-// Viewports are arranged like planar quadrants (CCW)
-// /-----.-----\
-// |  1  |  0  |
-// -------------
-// |  2  |  3  |
-// \-----.-----/
-void reshape_viewports()
-{
-  // Make horiz and vert sane
-  horiz = (horiz < 0 ? 0 : horiz);
-  vert = (vert < 0 ? 0 : vert);
-  horiz = (horiz > 1 ? 1 : horiz);
-  vert = (vert > 1 ? 1 : vert);
-  // Make effective horiz and vert even saner
-  double eff_h,eff_v;
-  clamp(horiz,vert,eff_h,eff_v);
-  viewports[0].reshape(eff_v*width,eff_h*height,(1.-eff_v)*width,(1.-eff_h)*height);
-  viewports[1].reshape(         0,eff_h*height,     eff_v*width,(1.-eff_h)*height);
-  viewports[2].reshape(         0,           0,     eff_v*width,eff_h*height);
-  viewports[3].reshape(eff_v*width,           0,(1.-eff_v)*width,eff_h*height);
-  for(auto & vp : viewports)
-  {
-    vp.camera.m_aspect = (double)vp.width/(double)vp.height;
-  }
-}
-
-void reshape(int width,int height)
-{
-  using namespace std;
-  // Save width and height
-  ::width = width;
-  ::height = height;
-  reshape_viewports();
-}
-
-// Set up double-sided lights
-void lights()
-{
-  using namespace std;
-  glEnable(GL_LIGHTING);
-  glLightModelf(GL_LIGHT_MODEL_TWO_SIDE,GL_TRUE);
-  glEnable(GL_LIGHT0);
-  glEnable(GL_LIGHT1);
-  float ones[4] = {1.0,1.0,1.0,1.0};
-  float zeros[4] = {0.0,0.0,0.0,0.0};
-  float pos[4];
-  copy(light_pos,light_pos+4,pos);
-  glLightfv(GL_LIGHT0,GL_AMBIENT,zeros);
-  glLightfv(GL_LIGHT0,GL_DIFFUSE,ones);
-  glLightfv(GL_LIGHT0,GL_SPECULAR,zeros);
-  glLightfv(GL_LIGHT0,GL_POSITION,pos);
-  pos[0] *= -1;
-  pos[1] *= -1;
-  pos[2] *= -1;
-  glLightfv(GL_LIGHT1,GL_AMBIENT,zeros);
-  glLightfv(GL_LIGHT1,GL_DIFFUSE,ones);
-  glLightfv(GL_LIGHT1,GL_SPECULAR,zeros);
-  glLightfv(GL_LIGHT1,GL_POSITION,pos);
-}
-
-// Set up igl::opengl2::projection and model view of scene
-void push_scene(const AugViewport & vp)
-{
-  using namespace igl;
-  using namespace std;
-  glMatrixMode(GL_PROJECTION);
-  glPushMatrix();
-  glLoadIdentity();
-  auto & camera = vp.camera;
-  glMultMatrixd(camera.projection().data());
-  glMatrixMode(GL_MODELVIEW);
-  glPushMatrix();
-  glLoadIdentity();
-  gluLookAt(
-    camera.eye()(0), camera.eye()(1), camera.eye()(2),
-    camera.at()(0), camera.at()(1), camera.at()(2),
-    camera.up()(0), camera.up()(1), camera.up()(2));
-}
-
-void pop_scene()
-{
-  glMatrixMode(GL_PROJECTION);
-  glPopMatrix();
-  glMatrixMode(GL_MODELVIEW);
-  glPopMatrix();
-}
-
-// Scale and shift for object
-void push_object()
-{
-  glPushMatrix();
-  glScaled(2./bbd,2./bbd,2./bbd);
-  glTranslated(-mean(0,0),-mean(0,1),-mean(0,2));
-}
-
-void pop_object()
-{
-  glPopMatrix();
-}
-
-const float back[4] = {190.0/255.0,190.0/255.0,190.0/255.0,0};
-void display()
-{
-  using namespace Eigen;
-  using namespace igl;
-  using namespace std;
-  glClearColor(back[0],back[1],back[2],0);
-  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-  // All smooth points
-  glEnable( GL_POINT_SMOOTH );
-
-  // Flashlights
-  lights();
-  for(int vp = 0;vp<NUM_VIEWPORTS;vp++)
-  {
-    if(
-      viewports[vp].width <= 0 ||
-      viewports[vp].height <= 0)
-    {
-      continue;
-    }
-    glViewport(
-      viewports[vp].x,
-      viewports[vp].y,
-      viewports[vp].width,
-      viewports[vp].height);
-    push_scene(viewports[vp]);
-    glEnable(GL_DEPTH_TEST);
-    glDepthFunc(GL_LEQUAL);
-    glEnable(GL_NORMALIZE);
-    glEnable(GL_COLOR_MATERIAL);
-    glColorMaterial(GL_FRONT_AND_BACK,GL_AMBIENT_AND_DIFFUSE);
-    push_object();
-    // Draw the model
-    glEnable(GL_LIGHTING);
-    igl::opengl2::draw_mesh(V,F,N,C);
-    pop_object();
-
-    // Draw a nice floor
-    glPushMatrix();
-    glCullFace(GL_BACK);
-    glEnable(GL_CULL_FACE);
-    glEnable(GL_LIGHTING);
-    glTranslated(0,-1,0);
-    if(igl::opengl2::project(Vector3d(0,0,0))(2) - igl::opengl2::project(Vector3d(0,1,0))(2) > -FLOAT_EPS)
-    {
-      igl::opengl2::draw_floor_outline();
-    }
-    igl::opengl2::draw_floor();
-    glPopMatrix();
-    glDisable(GL_CULL_FACE);
-
-    // Draw a ball at the mouse
-    if(!horiz_on && !vert_on && !trackball_on)
-    {
-      glPushMatrix();
-      glTranslated(ball(0),ball(1),ball(2));
-      glScaled(0.1,0.1,0.1);
-      igl::opengl2::draw_beach_ball();
-      glPopMatrix();
-    }
-
-    pop_scene();
-  }
-
-  // Screen space
-  glDisable(GL_DEPTH_TEST);
-  glDisable(GL_LIGHTING);
-  glViewport(0,0,width,height);
-  glMatrixMode(GL_PROJECTION);
-  glLoadIdentity();
-  gluOrtho2D(0,width,0,height);
-  glMatrixMode(GL_MODELVIEW);
-  glLoadIdentity();
-
-  // Display mouse position at cursor
-  string str;
-  void * font = GLUT_BITMAP_HELVETICA_18;
-  glColor3f(1,0,0);
-  glRasterPos2d(move_x+18,height-move_y+18);
-  str = STR("("<<move_x<<","<<move_y<<")");
-  for_each(str.begin(),str.end(),bind1st(ptr_fun(&glutBitmapCharacter),font));
-  glColor3f(0,0,1);
-  glRasterPos2d(move_x+18,height-move_y-1.5*18);
-  for_each(str.begin(),str.end(),bind1st(ptr_fun(&glutBitmapCharacter),font));
-
-  double eff_h,eff_v;
-  clamp(horiz,vert,eff_h,eff_v);
-  glLineWidth(BAR_THICKNESS);
-  glColor3f(0.5,0.5,0.5);
-  glBegin(GL_LINES);
-  glVertex2f(0,eff_h*height);
-  glVertex2f(width,eff_h*height);
-  glVertex2f(eff_v*width,0);
-  glVertex2f(eff_v*width,height);
-  glEnd();
-
-  glLineWidth(BAR_THICKNESS/3.0);
-  glColor3f(0.8,0.8,0.8);
-  glBegin(GL_LINES);
-  glVertex2f(0,eff_h*height);
-  glVertex2f(width,eff_h*height);
-  glVertex2f(eff_v*width,0);
-  glVertex2f(eff_v*width,height);
-  glEnd();
-
-
-  igl::opengl::report_gl_error();
-
-  glutSwapBuffers();
-}
-
-// Initialize colors to a boring green
-void init_C()
-{
-  C.col(0).setConstant(0.4);
-  C.col(1).setConstant(0.8);
-  C.col(2).setConstant(0.3);
-}
-
-const double SNAP_DIST = 10;
-void mouse_move(int mouse_x, int mouse_y)
-{
-  using namespace std;
-  using namespace Eigen;
-  using namespace igl;
-  using namespace std;
-  move_x = mouse_x;
-  move_y = mouse_y;
-  const int in_vp = find_if(viewports,viewports+NUM_VIEWPORTS,
-    [&mouse_x,&mouse_y](const AugViewport & vp) -> bool
-    {return vp.inside(mouse_x,height-mouse_y);})-viewports;
-  if(in_vp < NUM_VIEWPORTS)
-  {
-    if(
-      viewports[in_vp].width > 0 &&
-      viewports[in_vp].height > 0)
-    {
-      glViewport(
-        viewports[in_vp].x,
-        viewports[in_vp].y,
-        viewports[in_vp].width,
-        viewports[in_vp].height);
-      push_scene(viewports[in_vp]);
-      Vector3d screen_ball(mouse_x,height-mouse_y,0);
-      igl::opengl2::unproject_to_zero_plane(screen_ball,ball);
-      pop_scene();
-    }
-  }
-  if( (fabs((height-mouse_y) - horiz*height) < 2.*SNAP_DIST)
-   && (fabs(mouse_x - vert*width) < 2.*SNAP_DIST))
-  {
-    glutSetCursor(GLUT_CURSOR_TOP_LEFT_CORNER);
-  } else if( fabs((height-mouse_y) - horiz*height) < SNAP_DIST)
-  {
-    glutSetCursor(GLUT_CURSOR_UP_DOWN);
-  } else if( fabs(mouse_x - vert*width) < SNAP_DIST)
-  {
-    glutSetCursor(GLUT_CURSOR_LEFT_RIGHT);
-  } else
-  {
-    glutSetCursor(GLUT_CURSOR_LEFT_ARROW);
-  }
-  glutPostRedisplay();
-}
-
-void mouse(int glutButton, int glutState, int mouse_x, int mouse_y)
-{
-  using namespace std;
-  using namespace Eigen;
-  using namespace igl;
-  switch(glutState)
-  {
-    case 1:
-      // up
-      glutSetCursor(GLUT_CURSOR_LEFT_ARROW);
-      trackball_on = false;
-      break;
-    case 0:
-      horiz_on = vert_on = false;
-      if( (fabs((height-mouse_y) - horiz*height) < 2.*SNAP_DIST)
-          && (fabs(mouse_x - vert*width) < 2.*SNAP_DIST))
-      {
-        glutSetCursor(GLUT_CURSOR_TOP_LEFT_CORNER);
-        horiz_on = vert_on = true;
-      } else if( fabs((height-mouse_y) - horiz*height) < SNAP_DIST)
-      {
-        glutSetCursor(GLUT_CURSOR_UP_DOWN);
-        horiz_on = true;
-      } else if( fabs(mouse_x - vert*width) < SNAP_DIST)
-      {
-        glutSetCursor(GLUT_CURSOR_LEFT_RIGHT);
-        vert_on = true;
-      } else
-      {
-        down_vp = find_if(viewports,viewports+NUM_VIEWPORTS,
-          [&mouse_x,&mouse_y](const AugViewport & vp) -> bool
-          {return vp.inside(mouse_x,height-mouse_y);})-viewports;
-        // down
-        if(down_vp < NUM_VIEWPORTS)
-        {
-          glutSetCursor(GLUT_CURSOR_CYCLE);
-          // collect information for trackball
-          trackball_on = true;
-          down_camera = viewports[down_vp].camera;
-          down_mouse_x = mouse_x;
-          down_mouse_y = mouse_y;
-        }
-      }
-    break;
-  }
-  glutPostRedisplay();
-}
-
-void mouse_drag(int mouse_x, int mouse_y)
-{
-  using namespace igl;
-  mouse_move(mouse_x,mouse_y);
-
-  if(horiz_on)
-  {
-    glutSetCursor(GLUT_CURSOR_UP_DOWN);
-    horiz = (double)(height-mouse_y)/(double)height;
-    reshape_viewports();
-  }
-  if(vert_on)
-  {
-    if(horiz_on)
-    {
-      glutSetCursor(GLUT_CURSOR_TOP_LEFT_CORNER);
-    }else
-    {
-      glutSetCursor(GLUT_CURSOR_LEFT_RIGHT);
-    }
-    vert = (double)mouse_x/(double)width;
-    reshape_viewports();
-  }
-  if(trackball_on)
-  {
-    glutSetCursor(GLUT_CURSOR_CYCLE);
-    // Rotate according to trackball
-    trackball<double>(
-      viewports[down_vp].width,
-      viewports[down_vp].height,
-      2.0,
-      down_camera.m_rotation_conj.coeffs().data(),
-      viewports[down_vp].mouse_x(down_mouse_x),
-      viewports[down_vp].mouse_y(down_mouse_y,height),
-      viewports[down_vp].mouse_x(mouse_x),
-      viewports[down_vp].mouse_y(mouse_y,height),
-      viewports[down_vp].camera.m_rotation_conj.coeffs().data());
-  }
-  glutPostRedisplay();
-}
-
-
-void key(unsigned char key, int mouse_x, int mouse_y)
-{
-  using namespace std;
-  switch(key)
-  {
-    // Ctrl-c and esc exit
-    case char(3):
-    case char(27):
-      exit(0);
-    case 'Z':
-    {
-      const int in_vp = find_if(viewports,viewports+NUM_VIEWPORTS,
-          [&mouse_x,&mouse_y](const AugViewport & vp) -> bool
-          {return vp.inside(mouse_x,height-mouse_y);})-viewports;
-      if(in_vp < NUM_VIEWPORTS)
-      {
-        igl::snap_to_canonical_view_quat(
-          viewports[in_vp].camera.m_rotation_conj.coeffs().data(),
-          1.0,
-          viewports[in_vp].camera.m_rotation_conj.coeffs().data());
-      }
-      break;
-    }
-    default:
-      cout<<"Unknown key command: "<<key<<" "<<int(key)<<endl;
-  }
-
-  glutPostRedisplay();
-}
-
-int main(int argc, char * argv[])
-{
-  using namespace Eigen;
-  using namespace igl;
-  using namespace std;
-
-  // init mesh
-  string filename = "/usr/local/igl/libigl/examples/shared/decimated-knight.obj" ;
-  if(argc > 1)
-  {
-    filename = argv[1];
-  }
-
-  if(!read_triangle_mesh(filename,V,F))
-  {
-    return 1;
-  }
-  // Compute normals, centroid, colors, bounding box diagonal
-  per_face_normals(V,F,N);
-  normalize_row_lengths(N,N);
-  mean = V.colwise().mean();
-  C.resize(F.rows(),3);
-  init_C();
-  bbd =
-    (V.colwise().maxCoeff() -
-    V.colwise().minCoeff()).maxCoeff();
-
-
-  // Init viewports
-  init_viewports();
-
-  // Init glut
-  glutInit(&argc,argv);
-  glutInitDisplayString( "rgba depth double samples>=8 ");
-  glutInitWindowSize(glutGet(GLUT_SCREEN_WIDTH)/2.0,glutGet(GLUT_SCREEN_HEIGHT));
-  glutCreateWindow("multi-viewport");
-  glutDisplayFunc(display);
-  glutReshapeFunc(reshape);
-  glutKeyboardFunc(key);
-  glutMouseFunc(mouse);
-  glutMotionFunc(mouse_drag);
-  glutPassiveMotionFunc(mouse_move);
-  glutMainLoop();
-  return 0;
-}

examples/patches/Makefile

@@ -1,35 +0,0 @@
-.PHONY: all
-
-# Shared flags etc.
-include ../Makefile.conf
-ifdef LIBIGL_USE_STATIC_LIBRARY
-	LIBIGL_LIB+=-liglembree
-endif
-
-all: obj example
-
-.PHONY: example
-
-CFLAGS+=-g -std=c++11
-
-INC=$(LIBIGL_INC) $(ANTTWEAKBAR_INC) $(EIGEN3_INC) $(GLUT_INC) $(EMBREE_INC)
-LIB=$(OPENGL_LIB) $(GLUT_LIB) $(ANTTWEAKBAR_LIB) $(LIBIGL_LIB) $(EMBREE_LIB)
-
-CPP_FILES=$(wildcard ./*.cpp)
-OBJ_FILES=$(addprefix obj/,$(notdir $(CPP_FILES:.cpp=.o))) 
-
-example: obj $(OBJ_FILES)
-	g++ $(OPTFLAGS) $(OPENMP) $(AFLAGS) $(CFLAGS) -o example $(OBJ_FILES) $(LIB)
-
-obj:
-	mkdir -p obj
-
-obj/%.o: %.cpp
-	g++ $(OPTFLAGS) $(OPENMP) $(AFLAGS) $(CFLAGS) -c $< -o $@ $(INC)
-
-obj/%.o: %.cpp %.h
-	g++ $(OPTFLAGS) $(OPENMP) $(AFLAGS) $(CFLAGS) -c $< -o $@ $(INC)
-
-clean:
-	rm -f $(OBJ_FILES)
-	rm -f example

examples/patches/example.cpp

@@ -1,856 +0,0 @@
-#include <igl/C_STR.h>
-#include <igl/Camera.h>
-#include <igl/REDRUM.h>
-#include <igl/bfs_orient.h>
-#include <igl/components.h>
-#include <igl/opengl2/draw_floor.h>
-#include <igl/opengl2/draw_mesh.h>
-#include <igl/get_seconds.h>
-#include <igl/jet.h>
-#include <igl/list_to_matrix.h>
-#include <igl/material_colors.h>
-#include <igl/normalize_row_lengths.h>
-#include <igl/orient_outward.h>
-#include <igl/pathinfo.h>
-#include <igl/per_face_normals.h>
-#include <igl/polygon_mesh_to_triangle_mesh.h>
-#include <igl/quat_to_mat.h>
-#include <igl/randperm.h>
-#include <igl/readMESH.h>
-#include <igl/readOBJ.h>
-#include <igl/readOFF.h>
-#include <igl/readPLY.h>
-#include <igl/readWRL.h>
-#include <igl/opengl/report_gl_error.h>
-#include <igl/snap_to_canonical_view_quat.h>
-#include <igl/snap_to_fixed_up.h>
-#include <igl/trackball.h>
-#include <igl/two_axis_valuator_fixed_up.h>
-#include <igl/unique_simplices.h>
-#include <igl/writeOBJ.h>
-#include <igl/writeOFF.h>
-#include <igl/write_triangle_mesh.h>
-#include <igl/anttweakbar/ReAntTweakBar.h>
-#include <igl/embree/reorient_facets_raycast.h>
-
-#include <Eigen/Core>
-#include <Eigen/Geometry>
-
-#ifdef __APPLE__
-#include <GLUT/glut.h>
-#else
-#include <GL/glut.h>
-#endif
-
-#ifndef GLUT_WHEEL_UP
-#define GLUT_WHEEL_UP    3
-#endif
-#ifndef GLUT_WHEEL_DOWN
-#define GLUT_WHEEL_DOWN  4
-#endif
-#ifndef GLUT_WHEEL_RIGHT
-#define GLUT_WHEEL_RIGHT 5
-#endif
-#ifndef GLUT_WHEEL_LEFT
-#define GLUT_WHEEL_LEFT  6
-#endif
-#ifndef GLUT_ACTIVE_COMMAND
-#define GLUT_ACTIVE_COMMAND 8
-#endif
-
-#include <ctime>
-#include <string>
-#include <vector>
-#include <stack>
-#include <iostream>
-
-int cc_selected = -1;
-
-Eigen::MatrixXd V;
-Eigen::VectorXd Vmid,Vmin,Vmax;
-double bbd = 1.0;
-Eigen::MatrixXi F;
-Eigen::VectorXi CC;
-struct State
-{
-  igl::Camera camera;
-  Eigen::MatrixXd N;
-  Eigen::MatrixXd C;
-} s;
-std::string out_filename;
-
-// See README for descriptions
-enum RotationType
-{
-  ROTATION_TYPE_IGL_TRACKBALL = 0,
-  ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP = 1,
-  NUM_ROTATION_TYPES = 2,
-} rotation_type;
-
-enum CenterType
-{
-  CENTER_TYPE_ORBIT = 0,
-  CENTER_TYPE_FPS  = 1,
-  NUM_CENTER_TYPES = 2,
-} center_type = CENTER_TYPE_ORBIT;
-
-enum OrientMethod
-{
-  ORIENT_METHOD_OUTWARD = 0,
-  ORIENT_METHOD_AO = 1,
-  NUM_ORIENT_METHODS = 2,
-} orient_method = ORIENT_METHOD_AO;
-
-std::stack<State> undo_stack;
-std::stack<State> redo_stack;
-
-bool wireframe_visible = false;
-bool fill_visible = true;
-
-bool is_rotating = false;
-int down_x,down_y;
-igl::Camera down_camera;
-
-bool is_animating = false;
-double animation_start_time = 0;
-double ANIMATION_DURATION = 0.5;
-Eigen::Quaterniond animation_from_quat;
-Eigen::Quaterniond animation_to_quat;
-
-int width,height;
-Eigen::Vector4f light_pos(-0.1,-0.1,0.9,0);
-
-#define REBAR_NAME "temp.rbr"
-igl::anttweakbar::ReTwBar rebar;
-
-// Forward
-void init_patches();
-void init_relative();
-
-void push_undo()
-{
-  undo_stack.push(s);
-  // Clear
-  redo_stack = std::stack<State>();
-}
-
-void TW_CALL set_orient_method(const void * value, void * clientData)
-{
-  const OrientMethod old_orient_method = orient_method;
-  orient_method = *(const OrientMethod *)value;
-  if(orient_method != old_orient_method)
-  {
-    init_patches();
-    init_relative();
-  }
-}
-
-void TW_CALL get_orient_method(void * value, void *clientData)
-{
-  OrientMethod * om = (OrientMethod *)(value);
-  *om = orient_method;
-}
-
-void TW_CALL set_rotation_type(const void * value, void * clientData)
-{
-  using namespace Eigen;
-  using namespace std;
-  using namespace igl;
-  const RotationType old_rotation_type = rotation_type;
-  rotation_type = *(const RotationType *)(value);
-  if(rotation_type == ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP &&
-    old_rotation_type != ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP)
-  {
-    push_undo();
-    animation_from_quat = s.camera.m_rotation_conj;
-    snap_to_fixed_up(animation_from_quat,animation_to_quat);
-    // start animation
-    animation_start_time = get_seconds();
-    is_animating = true;
-  }
-}
-void TW_CALL get_rotation_type(void * value, void *clientData)
-{
-  RotationType * rt = (RotationType *)(value);
-  *rt = rotation_type;
-}
-
-void reshape(int width, int height)
-{
-  ::width = width;
-  ::height = height;
-  glViewport(0,0,width,height);
-  // Send the new window size to AntTweakBar
-  TwWindowSize(width, height);
-  s.camera.m_aspect = (double)width/(double)height;
-}
-
-void push_scene()
-{
-  using namespace igl;
-  using namespace std;
-  glMatrixMode(GL_PROJECTION);
-  glPushMatrix();
-  glLoadIdentity();
-  auto & camera = s.camera;
-  glMultMatrixd(camera.projection().data());
-  glMatrixMode(GL_MODELVIEW);
-  glPushMatrix();
-  glLoadIdentity();
-  gluLookAt(
-    camera.eye()(0), camera.eye()(1), camera.eye()(2),
-    camera.at()(0), camera.at()(1), camera.at()(2),
-    camera.up()(0), camera.up()(1), camera.up()(2));
-}
-void push_object()
-{
-  using namespace igl;
-  glPushMatrix();
-  glScaled(2./bbd,2./bbd,2./bbd);
-  glTranslated(-Vmid(0),-Vmid(1),-Vmid(2));
-}
-
-void pop_object()
-{
-  glPopMatrix();
-}
-
-void pop_scene()
-{
-  glMatrixMode(GL_PROJECTION);
-  glPopMatrix();
-  glMatrixMode(GL_MODELVIEW);
-  glPopMatrix();
-}
-
-// Set up double-sided lights
-void lights()
-{
-  using namespace std;
-  using namespace Eigen;
-  glEnable(GL_LIGHTING);
-  //glLightModelf(GL_LIGHT_MODEL_TWO_SIDE,GL_TRUE);
-  glEnable(GL_LIGHT0);
-  float WHITE[4] = {1,1,1,1.};
-  float GREY[4] = {0.4,0.4,0.4,1.};
-  float BLACK[4] = {0.,0.,0.,1.};
-  float NEAR_BLACK[4] =  {0.1,0.1,0.1,1.};
-  Vector4f pos = light_pos;
-  glLightfv(GL_LIGHT0,GL_AMBIENT,BLACK);
-  glLightfv(GL_LIGHT0,GL_DIFFUSE,WHITE);
-  glLightfv(GL_LIGHT0,GL_SPECULAR,BLACK);
-  glLightfv(GL_LIGHT0,GL_POSITION,pos.data());
-  //glEnable(GL_LIGHT1);
-  //pos(0) *= -1;
-  //pos(1) *= -1;
-  //pos(2) *= -1;
-  //glLightfv(GL_LIGHT1,GL_AMBIENT,BLACK);
-  //glLightfv(GL_LIGHT1,GL_DIFFUSE,NEAR_BLACK);
-  //glLightfv(GL_LIGHT1,GL_SPECULAR,BLACK);
-  //glLightfv(GL_LIGHT1,GL_POSITION,pos.data());
-}
-
-void display()
-{
-  using namespace igl;
-  using namespace std;
-  using namespace Eigen;
-  glClearColor(1,1,1,0);
-  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
-  if(is_animating)
-  {
-    double t = (get_seconds() - animation_start_time)/ANIMATION_DURATION;
-    if(t > 1)
-    {
-      t = 1;
-      is_animating = false;
-    }
-    Quaterniond q = animation_from_quat.slerp(t,animation_to_quat).normalized();
-    auto & camera = s.camera;
-    switch(center_type)
-    {
-      default:
-      case CENTER_TYPE_ORBIT:
-        camera.orbit(q.conjugate());
-        break;
-      case CENTER_TYPE_FPS:
-        camera.turn_eye(q.conjugate());
-        break;
-    }
-  }
-
-  glEnable(GL_DEPTH_TEST);
-  glEnable(GL_NORMALIZE);
-  lights();
-  push_scene();
-  push_object();
-
-  // Set material properties
-  glEnable(GL_COLOR_MATERIAL);
-  glColorMaterial(GL_FRONT_AND_BACK,GL_AMBIENT_AND_DIFFUSE);
-  if(wireframe_visible)
-  {
-    glPolygonMode(GL_FRONT_AND_BACK,GL_LINE);
-    if(fill_visible)
-    {
-      glColor3f(0,0,0);
-      igl::opengl2::draw_mesh(V,F,s.N);
-    }else
-    {
-      igl::opengl2::draw_mesh(V,F,s.N,s.C);
-    }
-
-    // visualize selected patch
-    glLineWidth(10);
-    glBegin(GL_TRIANGLES);
-    glColor3d(0, 0, 0);
-    // loop over faces
-    for(int i = 0; i<F.rows();i++)
-    {
-      if (CC(i) != cc_selected) continue;
-      // loop over corners of triangle
-      for(int j = 0;j<3;j++)
-      {
-        glVertex3d(V(F(i,j),0),V(F(i,j),1),V(F(i,j),2));
-      }
-    }
-    glEnd();
-    glLineWidth(1);
-    glPolygonMode(GL_FRONT_AND_BACK,GL_FILL);
-    glBegin(GL_TRIANGLES);
-    glColor3d(1, 0, 0);
-    // loop over faces
-    for(int i = 0; i<F.rows();i++)
-    {
-      if (CC(i) != cc_selected) continue;
-      // loop over corners of triangle
-      glNormal3d(s.N(i,0),s.N(i,1),s.N(i,2));
-      for(int j = 0;j<3;j++)
-      {
-        glVertex3d(V(F(i,j),0),V(F(i,j),1),V(F(i,j),2));
-      }
-    }
-    glEnd();
-  }
-  glPolygonMode(GL_FRONT_AND_BACK,GL_FILL);
-  if(fill_visible)
-  {
-    glEnable(GL_POLYGON_OFFSET_FILL); // Avoid Stitching!
-    glPolygonOffset(1.0, 0);
-    igl::opengl2::draw_mesh(V,F,s.N,s.C);
-  }
-
-  pop_object();
-
-  // Draw a nice floor
-  glPushMatrix();
-  const double floor_offset =
-    -2./bbd*(V.col(1).maxCoeff()-Vmid(1));
-  glTranslated(0,floor_offset,0);
-  const float GREY[4] = {0.5,0.5,0.6,1.0};
-  const float DARK_GREY[4] = {0.2,0.2,0.3,1.0};
-  igl::opengl2::draw_floor(GREY,DARK_GREY);
-  glPopMatrix();
-
-  pop_scene();
-
-  igl::opengl::report_gl_error();
-
-  TwDraw();
-  glutSwapBuffers();
-  glutPostRedisplay();
-}
-
-void mouse_wheel(int wheel, int direction, int mouse_x, int mouse_y)
-{
-  using namespace std;
-  using namespace igl;
-  using namespace Eigen;
-  GLint viewport[4];
-  glGetIntegerv(GL_VIEWPORT,viewport);
-  if(wheel == 0 && TwMouseMotion(mouse_x, viewport[3] - mouse_y))
-  {
-    static double mouse_scroll_y = 0;
-    const double delta_y = 0.125*direction;
-    mouse_scroll_y += delta_y;
-    TwMouseWheel(mouse_scroll_y);
-    return;
-  }
-  push_undo();
-
-  auto & camera = s.camera;
-  switch(center_type)
-  {
-    case CENTER_TYPE_ORBIT:
-      if(wheel==0)
-      {
-        // factor of zoom change
-        double s = (1.-0.01*direction);
-        //// FOV zoom: just widen angle. This is hardly ever appropriate.
-        //camera.m_angle *= s;
-        //camera.m_angle = min(max(camera.m_angle,1),89);
-        camera.push_away(s);
-      }else
-      {
-        // Dolly zoom:
-        camera.dolly_zoom((double)direction*1.0);
-      }
-      break;
-    default:
-    case CENTER_TYPE_FPS:
-      // Move `eye` and `at`
-      camera.dolly((wheel==0?Vector3d(0,0,1):Vector3d(-1,0,0))*0.1*direction);
-      break;
-  }
-}
-
-void mouse(int glutButton, int glutState, int mouse_x, int mouse_y)
-{
-  using namespace std;
-  using namespace Eigen;
-  using namespace igl;
-  bool tw_using = TwEventMouseButtonGLUT(glutButton,glutState,mouse_x,mouse_y);
-  switch(glutButton)
-  {
-    case GLUT_RIGHT_BUTTON:
-    case GLUT_LEFT_BUTTON:
-    {
-      switch(glutState)
-      {
-        case 1:
-          // up
-          glutSetCursor(GLUT_CURSOR_INHERIT);
-          is_rotating = false;
-          break;
-        case 0:
-          if(!tw_using)
-          {
-            push_undo();
-            glutSetCursor(GLUT_CURSOR_CYCLE);
-            // collect information for trackball
-            is_rotating = true;
-            down_camera = s.camera;
-            down_x = mouse_x;
-            down_y = mouse_y;
-          }
-        break;
-      }
-      break;
-      // Scroll down
-      case GLUT_WHEEL_DOWN:
-      {
-        mouse_wheel(0,-1,mouse_x,mouse_y);
-        break;
-      }
-      // Scroll up
-      case GLUT_WHEEL_UP:
-      {
-        mouse_wheel(0,1,mouse_x,mouse_y);
-        break;
-      }
-      // Scroll left
-      case GLUT_WHEEL_LEFT:
-      {
-        mouse_wheel(1,-1,mouse_x,mouse_y);
-        break;
-      }
-      // Scroll right
-      case GLUT_WHEEL_RIGHT:
-      {
-        mouse_wheel(1,1,mouse_x,mouse_y);
-        break;
-      }
-    }
-  }
-}
-
-void mouse_drag(int mouse_x, int mouse_y)
-{
-  using namespace igl;
-  using namespace std;
-  using namespace Eigen;
-  bool tw_using = TwMouseMotion(mouse_x,mouse_y);
-
-  if(is_rotating)
-  {
-    glutSetCursor(GLUT_CURSOR_CYCLE);
-    Quaterniond q;
-    auto & camera = s.camera;
-    switch(rotation_type)
-    {
-      case ROTATION_TYPE_IGL_TRACKBALL:
-      {
-        // Rotate according to trackball
-        igl::trackball<double>(
-          width,
-          height,
-          2.0,
-          down_camera.m_rotation_conj.coeffs().data(),
-          down_x,
-          down_y,
-          mouse_x,
-          mouse_y,
-          q.coeffs().data());
-          break;
-      }
-      case ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP:
-      {
-        // Rotate according to two axis valuator with fixed up vector
-        two_axis_valuator_fixed_up(
-          width, height,
-          2.0,
-          down_camera.m_rotation_conj,
-          down_x, down_y, mouse_x, mouse_y,
-          q);
-        break;
-      }
-      default:
-        break;
-    }
-    switch(center_type)
-    {
-      default:
-      case CENTER_TYPE_ORBIT:
-        camera.orbit(q.conjugate());
-        break;
-      case CENTER_TYPE_FPS:
-        camera.turn_eye(q.conjugate());
-        break;
-    }
-  }
-}
-
-void init_relative()
-{
-  using namespace Eigen;
-  using namespace igl;
-  per_face_normals(V,F,s.N);
-  normalize_row_lengths(s.N,s.N);
-  Vmax = V.colwise().maxCoeff();
-  Vmin = V.colwise().minCoeff();
-  Vmid = 0.5*(Vmax + Vmin);
-  bbd = (Vmax-Vmin).norm();
-}
-
-void randomly_color(
-  const Eigen::VectorXi & CC,
-  Eigen::MatrixXd & C)
-{
-  using namespace Eigen;
-  using namespace igl;
-  using namespace std;
-  VectorXi I;
-  srand ( unsigned ( time(0) ) );
-  double num_cc = (double)CC.maxCoeff()+1.0;
-  randperm(num_cc,I);
-  C.resize(CC.rows(),3);
-  for(int f = 0;f<CC.rows();f++)
-  {
-    jet(
-      (double)I(CC(f))/num_cc,
-      C(f,0),
-      C(f,1),
-      C(f,2));
-  }
-}
-
-void TW_CALL randomize_colors(void * /*clientData*/)
-{
-  push_undo();
-  randomly_color(CC,s.C);
-}
-
-void init_patches()
-{
-  using namespace Eigen;
-  using namespace igl;
-  using namespace std;
-  {
-    VectorXi VCC;
-    components(F,VCC);
-    cout<<"There are "<<VCC.maxCoeff()+1<<" connected components of vertices."<<endl;
-  }
-  bfs_orient(F,F,CC);
-  VectorXi I;
-  switch(orient_method)
-  {
-    case ORIENT_METHOD_AO:
-    {
-      cout<<"orient_outward_ao()"<<endl;
-      igl::embree::reorient_facets_raycast(V,F,F,I);
-      break;
-    }
-    case ORIENT_METHOD_OUTWARD:
-    default:
-      cout<<"orient_outward()"<<endl;
-      orient_outward(V,F,CC,F,I);
-      break;
-  }
-  double num_cc = (double)CC.maxCoeff()+1.0;
-  cout<<"There are "<<num_cc<<" 'manifold/orientable' patches of faces."<<endl;
-}
-
-void undo()
-{
-  using namespace std;
-  if(!undo_stack.empty())
-  {
-    redo_stack.push(s);
-    s = undo_stack.top();
-    undo_stack.pop();
-  }
-}
-
-void redo()
-{
-  using namespace std;
-  if(!redo_stack.empty())
-  {
-    undo_stack.push(s);
-    s = redo_stack.top();
-    redo_stack.pop();
-  }
-}
-
-bool save(const std::string & out_filename)
-{
-  using namespace std;
-  using namespace igl;
-  if(write_triangle_mesh(out_filename,V,F))
-  {
-    cout<<GREENGIN("Saved mesh to `"<<out_filename<<"` successfully.")<<endl;
-    return true;
-  }else
-  {
-    cout<<REDRUM("Failed to save mesh to `"<<out_filename<<"`.")<<endl;
-    return false;
-  }
-}
-
-void TW_CALL saveCB(void * /*clientData*/)
-{
-  save(out_filename);
-}
-
-void key(unsigned char key, int mouse_x, int mouse_y)
-{
-  using namespace std;
-  using namespace Eigen;
-  using namespace igl;
-  int mod = glutGetModifiers();
-  switch(key)
-  {
-    // ESC
-    case char(27):
-      rebar.save(REBAR_NAME);
-    // ^C
-    case char(3):
-      exit(0);
-    case 'I':
-    case 'i':
-      {
-        push_undo();
-        s.N *= -1.0;
-        F = F.rowwise().reverse().eval();
-        break;
-      }
-    case 'z':
-    case 'Z':
-      if(mod & GLUT_ACTIVE_COMMAND)
-      {
-        if(mod & GLUT_ACTIVE_SHIFT)
-        {
-          redo();
-        }else
-        {
-          undo();
-        }
-      }else
-      {
-        push_undo();
-        Quaterniond q;
-        snap_to_canonical_view_quat(s.camera.m_rotation_conj,1.0,q);
-        switch(center_type)
-        {
-          default:
-          case CENTER_TYPE_ORBIT:
-            s.camera.orbit(q.conjugate());
-            break;
-          case CENTER_TYPE_FPS:
-            s.camera.turn_eye(q.conjugate());
-            break;
-        }
-      }
-      break;
-    case 'u':
-        mouse_wheel(0, 1,mouse_x,mouse_y);
-        break;
-    case 'j':
-        mouse_wheel(0,-1,mouse_x,mouse_y);
-        break;
-    case 'n':
-      cc_selected = (cc_selected + 1) % (CC.maxCoeff() + 2);
-      cout << "selected cc: " << cc_selected << endl;
-      glutPostRedisplay();
-      break;
-    default:
-      if(!TwEventKeyboardGLUT(key,mouse_x,mouse_y))
-      {
-        cout<<"Unknown key command: "<<key<<" "<<int(key)<<endl;
-      }
-  }
-
-}
-
-int main(int argc, char * argv[])
-{
-  using namespace std;
-  using namespace Eigen;
-  using namespace igl;
-  string filename = "../shared/truck.obj";
-  switch(argc)
-  {
-    case 3:
-      out_filename = argv[2];
-    case 2:
-      // Read and prepare mesh
-      filename = argv[1];
-      break;
-    default:
-      cerr<<"Usage:"<<endl<<"    ./example input.obj (output.obj)"<<endl;
-      cout<<endl<<"Opening default mesh..."<<endl;
-      break;
-  }
-
-  // print key commands
-  cout<<"[Click] and [drag]  Rotate model using trackball."<<endl;
-  cout<<"[Z,z]               Snap rotation to canonical view."<<endl;
-  cout<<"[Command+Z]         Undo."<<endl;
-  cout<<"[Shift+Command+Z]   Redo."<<endl;
-  cout<<"[^C,ESC]            Exit."<<endl;
-
-  // dirname, basename, extension and filename
-  string d,b,ext,f;
-  pathinfo(filename,d,b,ext,f);
-  // Convert extension to lower case
-  transform(ext.begin(), ext.end(), ext.begin(), ::tolower);
-  vector<vector<double > > vV,vN,vTC;
-  vector<vector<int > > vF,vFTC,vFN;
-  if(ext == "obj")
-  {
-    // Convert extension to lower case
-    if(!igl::readOBJ(filename,vV,vTC,vN,vF,vFTC,vFN))
-    {
-      return 1;
-    }
-  }else if(ext == "off")
-  {
-    // Convert extension to lower case
-    if(!igl::readOFF(filename,vV,vF,vN))
-    {
-      return 1;
-    }
-  }else if(ext == "ply")
-  {
-    // Convert extension to lower case
-    if(!igl::readPLY(filename,vV,vF,vN,vTC))
-    {
-      return 1;
-    }
-  }else if(ext == "wrl")
-  {
-    // Convert extension to lower case
-    if(!igl::readWRL(filename,vV,vF))
-    {
-      return 1;
-    }
-  //}else
-  //{
-  //  // Convert extension to lower case
-  //  MatrixXi T;
-  //  if(!igl::readMESH(filename,V,T,F))
-  //  {
-  //    return 1;
-  //  }
-  //  //if(F.size() > T.size() || F.size() == 0)
-  //  {
-  //    boundary_facets(T,F);
-  //  }
-  }
-  if(vV.size() > 0)
-  {
-    if(!list_to_matrix(vV,V))
-    {
-      return 1;
-    }
-    polygon_mesh_to_triangle_mesh(vF,F);
-  }
-  MatrixXi F_unique;
-  unique_simplices(F, F_unique);
-  F = F_unique;
-
-  init_patches();
-  init_relative();
-  randomly_color(CC,s.C);
-
-  // Init glut
-  glutInit(&argc,argv);
-  if( !TwInit(TW_OPENGL, NULL) )
-  {
-    // A fatal error occured
-    fprintf(stderr, "AntTweakBar initialization failed: %s\n", TwGetLastError());
-    return 1;
-  }
-  // Create a tweak bar
-  rebar.TwNewBar("bar");
-  TwDefine("bar label='Patches' size='200 550' text=light alpha='200' color='68 68 68'");
-  rebar.TwAddVarRW("camera_rotation", TW_TYPE_QUAT4D,
-    s.camera.m_rotation_conj.coeffs().data(), "open readonly=true");
-  TwType RotationTypeTW = igl::anttweakbar::ReTwDefineEnumFromString("RotationType",
-    "igl_trackball,two-axis-valuator-fixed-up");
-  rebar.TwAddVarCB( "rotation_type", RotationTypeTW,
-    set_rotation_type,get_rotation_type,NULL,"keyIncr=] keyDecr=[");
-  TwType CenterTypeTW = igl::anttweakbar::ReTwDefineEnumFromString("CenterType","orbit,fps");
-  rebar.TwAddVarRW("center_type", CenterTypeTW,&center_type,
-    "keyIncr={ keyDecr=}");
-  TwType OrientMethodTW = igl::anttweakbar::ReTwDefineEnumFromString("OrientMethod",
-    "outward,ambient-occlusion");
-  rebar.TwAddVarCB( "orient_method", OrientMethodTW,
-    set_orient_method,get_orient_method,NULL,"keyIncr=< keyDecr=>");
-
-  rebar.TwAddVarRW("wireframe_visible",TW_TYPE_BOOLCPP,&wireframe_visible,"key=l");
-  rebar.TwAddVarRW("fill_visible",TW_TYPE_BOOLCPP,&fill_visible,"key=f");
-  rebar.TwAddButton("randomize_colors",randomize_colors,NULL,"key=c");
-  if(out_filename != "")
-  {
-    rebar.TwAddButton("save",
-      saveCB,NULL,
-      C_STR("label='Save to `"<<out_filename<<"`' "<<
-      "key=s"));
-  }
-  rebar.load(REBAR_NAME);
-
-
-  animation_from_quat = Quaterniond(1,0,0,0);
-  s.camera.m_rotation_conj = animation_from_quat;
-  animation_start_time = get_seconds();
-
-  // Init antweakbar
-#ifdef __APPLE__
-  glutInitDisplayString( "rgba depth double samples>=8");
-#else
-  glutInitDisplayString( "rgba depth double ");   // samples>=8 somehow not supported on Kenshi's machines...?
-#endif
-  glutInitWindowSize(glutGet(GLUT_SCREEN_WIDTH)/2.0,glutGet(GLUT_SCREEN_HEIGHT)/2.0);
-  glutCreateWindow("patches");
-  glutDisplayFunc(display);
-  glutReshapeFunc(reshape);
-  glutKeyboardFunc(key);
-  glutMouseFunc(mouse);
-  glutMotionFunc(mouse_drag);
-  glutPassiveMotionFunc((GLUTmousemotionfun)TwEventMouseMotionGLUT);
-  glutMainLoop();
-
-  return 0;
-}

examples/patches/example.sln

@@ -1,20 +0,0 @@
-
-Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 2012
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "example", "example.vcxproj", "{7F5B7683-7531-481C-8997-6221D7170894}"
-EndProject
-Global
-	GlobalSection(SolutionConfigurationPlatforms) = preSolution
-		Debug|Win32 = Debug|Win32
-		Release|Win32 = Release|Win32
-	EndGlobalSection
-	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{7F5B7683-7531-481C-8997-6221D7170894}.Debug|Win32.ActiveCfg = Debug|Win32
-		{7F5B7683-7531-481C-8997-6221D7170894}.Debug|Win32.Build.0 = Debug|Win32
-		{7F5B7683-7531-481C-8997-6221D7170894}.Release|Win32.ActiveCfg = Release|Win32
-		{7F5B7683-7531-481C-8997-6221D7170894}.Release|Win32.Build.0 = Release|Win32
-	EndGlobalSection
-	GlobalSection(SolutionProperties) = preSolution
-		HideSolutionNode = FALSE
-	EndGlobalSection
-EndGlobal

examples/patches/example.vcxproj

@@ -1,150 +0,0 @@
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-<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <ItemGroup Label="ProjectConfigurations">
-    <ProjectConfiguration Include="Debug|Win32">
-      <Configuration>Debug</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Release|Win32">
-      <Configuration>Release</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
-  </ItemGroup>
-  <PropertyGroup Label="Globals">
-    <ProjectGuid>{7F5B7683-7531-481C-8997-6221D7170894}</ProjectGuid>
-    <Keyword>Win32Proj</Keyword>
-    <RootNamespace>example</RootNamespace>
-  </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
-    <ConfigurationType>Application</ConfigurationType>
-    <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v120</PlatformToolset>
-    <WholeProgramOptimization>true</WholeProgramOptimization>
-    <CharacterSet>MultiByte</CharacterSet>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
-    <ConfigurationType>Application</ConfigurationType>
-    <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v120</PlatformToolset>
-    <WholeProgramOptimization>false</WholeProgramOptimization>
-    <CharacterSet>MultiByte</CharacterSet>
-  </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
-  <ImportGroup Label="ExtensionSettings">
-  </ImportGroup>
-  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
-  </ImportGroup>
-  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="PropertySheets">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
-  </ImportGroup>
-  <PropertyGroup Label="UserMacros" />
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
-    <LinkIncremental>false</LinkIncremental>
-    <IncludePath>C:\Users\kenshi\dev\igl_hg\ext_toolboxes\embree-1.1beta\common;$(IncludePath)</IncludePath>
-    <OutDir>$(ProjectDir)\</OutDir>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
-    <LinkIncremental>false</LinkIncremental>
-    <IncludePath>C:\Users\kenshi\dev\igl_hg\ext_toolboxes\embree-1.1beta\common;$(IncludePath)</IncludePath>
-    <OutDir>$(ProjectDir)\</OutDir>
-    <TargetName>$(ProjectName)d</TargetName>
-  </PropertyGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
-    <ClCompile>
-      <WarningLevel>Level3</WarningLevel>
-      <PrecompiledHeader>
-      </PrecompiledHeader>
-      <FunctionLevelLinking>true</FunctionLevelLinking>
-      <IntrinsicFunctions>true</IntrinsicFunctions>
-      <PreprocessorDefinitions>EIGEN_DONT_ALIGN_STATICALLY;IGL_HEADER_ONLY;WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
-      <AdditionalIncludeDirectories>..\..\external\embree;..\..\external\embree\embree;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <OpenMPSupport>true</OpenMPSupport>
-    </ClCompile>
-    <Link>
-      <SubSystem>Console</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
-      <AdditionalDependencies>glew32.lib;kernel32.lib;user32.lib;gdi32.lib;winspool.lib;comdlg32.lib;advapi32.lib;shell32.lib;ole32.lib;oleaut32.lib;uuid.lib;odbc32.lib;odbccp32.lib;%(AdditionalDependencies)</AdditionalDependencies>
-    </Link>
-  </ItemDefinitionGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
-    <ClCompile>
-      <WarningLevel>Level3</WarningLevel>
-      <PrecompiledHeader>
-      </PrecompiledHeader>
-      <Optimization>Disabled</Optimization>
-      <FunctionLevelLinking>true</FunctionLevelLinking>
-      <IntrinsicFunctions>true</IntrinsicFunctions>
-      <PreprocessorDefinitions>EIGEN_DONT_ALIGN_STATICALLY;IGL_HEADER_ONLY;WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <RuntimeLibrary>MultiThreaded</RuntimeLibrary>
-      <AdditionalIncludeDirectories>..\..\external\embree;..\..\external\embree\embree;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <OpenMPSupport>true</OpenMPSupport>
-      <WholeProgramOptimization>false</WholeProgramOptimization>
-    </ClCompile>
-    <Link>
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-      <GenerateDebugInformation>true</GenerateDebugInformation>
-      <EnableCOMDATFolding>true</EnableCOMDATFolding>
-      <OptimizeReferences>false</OptimizeReferences>
-      <AdditionalDependencies>glew32.lib;kernel32.lib;user32.lib;gdi32.lib;winspool.lib;comdlg32.lib;advapi32.lib;shell32.lib;ole32.lib;oleaut32.lib;uuid.lib;odbc32.lib;odbccp32.lib;%(AdditionalDependencies)</AdditionalDependencies>
-    </Link>
-  </ItemDefinitionGroup>
-  <ItemGroup>
-    <ClCompile Include="..\..\external\embree\embree\builders\heuristic_binning.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\builders\heuristic_spatial.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\builders\primrefgen.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\builders\splitter.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\builders\splitter_fallback.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\builders\splitter_parallel.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\bvh2\bvh2.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\bvh2\bvh2_intersector1.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\bvh2\bvh2_intersector4.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\bvh2\bvh2_intersector8.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\bvh4i\bvh4i.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\bvh4i\bvh4i_intersector1.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\bvh4mb\bvh4mb.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\bvh4mb\bvh4mb_builder.cpp" />
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-    <ClCompile Include="..\..\external\embree\embree\bvh4\bvh4.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\bvh4\bvh4_intersector1.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\bvh4\bvh4_intersector1_avx.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\bvh4\bvh4_intersector4_chunk.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\bvh4\bvh4_intersector4_hybrid.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\bvh4\bvh4_intersector4_single.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\bvh4\bvh4_intersector8_chunk.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\bvh4\bvh4_intersector8_hybrid.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\bvh4\bvh4_intersector8_single.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\bvh8\bvh8.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\bvh8\bvh8_intersector1.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\common\accel.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\common\alloc.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\common\registry_accel.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\common\registry_builder.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\common\registry_intersector.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\common\stat.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\embree.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\geometry\triangle_mesh.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\geometry\virtual_scene.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\sys\filename.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\sys\platform.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\sys\stl\string.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\sys\sync\condition.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\sys\sync\mutex.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\sys\sysinfo.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\sys\taskscheduler.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\sys\taskscheduler_mic.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\sys\taskscheduler_sys.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\sys\thread.cpp" />
-    <ClCompile Include="example.cpp" />
-  </ItemGroup>
-  <ItemGroup>
-    <ClInclude Include="..\..\include\igl\embree\orient_outward_ao.h" />
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-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
-  <ImportGroup Label="ExtensionTargets">
-  </ImportGroup>
-</Project>

examples/patches/example.vcxproj.filters

@@ -1,158 +0,0 @@
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-<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <ItemGroup>
-    <ClCompile Include="example.cpp" />
-    <ClCompile Include="..\..\external\embree\embree\builders\primrefgen.cpp">
-      <Filter>embree</Filter>
-    </ClCompile>
-    <ClCompile Include="..\..\external\embree\embree\builders\splitter.cpp">
-      <Filter>embree</Filter>
-    </ClCompile>
-    <ClCompile Include="..\..\external\embree\embree\builders\splitter_fallback.cpp">
-      <Filter>embree</Filter>
-    </ClCompile>
-    <ClCompile Include="..\..\external\embree\embree\builders\splitter_parallel.cpp">
-      <Filter>embree</Filter>
-    </ClCompile>
-    <ClCompile Include="..\..\external\embree\embree\builders\heuristic_binning.cpp">
-      <Filter>embree</Filter>
-    </ClCompile>
-    <ClCompile Include="..\..\external\embree\embree\builders\heuristic_spatial.cpp">
-      <Filter>embree</Filter>
-    </ClCompile>
-    <ClCompile Include="..\..\external\embree\embree\bvh2\bvh2_intersector4.cpp">
-      <Filter>embree</Filter>
-    </ClCompile>
-    <ClCompile Include="..\..\external\embree\embree\bvh2\bvh2_intersector8.cpp">
-      <Filter>embree</Filter>
-    </ClCompile>
-    <ClCompile Include="..\..\external\embree\embree\bvh2\bvh2.cpp">
-      <Filter>embree</Filter>
-    </ClCompile>
-    <ClCompile Include="..\..\external\embree\embree\bvh2\bvh2_intersector1.cpp">
-      <Filter>embree</Filter>
-    </ClCompile>
-    <ClCompile Include="..\..\external\embree\embree\bvh4\bvh4_intersector4_chunk.cpp">
-      <Filter>embree</Filter>
-    </ClCompile>
-    <ClCompile Include="..\..\external\embree\embree\bvh4\bvh4_intersector4_hybrid.cpp">
-      <Filter>embree</Filter>
-    </ClCompile>
-    <ClCompile Include="..\..\external\embree\embree\bvh4\bvh4_intersector4_single.cpp">
-      <Filter>embree</Filter>
-    </ClCompile>
-    <ClCompile Include="..\..\external\embree\embree\bvh4\bvh4_intersector8_chunk.cpp">
-      <Filter>embree</Filter>
-    </ClCompile>
-    <ClCompile Include="..\..\external\embree\embree\bvh4\bvh4_intersector8_hybrid.cpp">
-      <Filter>embree</Filter>
-    </ClCompile>
-    <ClCompile Include="..\..\external\embree\embree\bvh4\bvh4_intersector8_single.cpp">
-      <Filter>embree</Filter>
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examples/path_tests/Makefile

@@ -1,21 +0,0 @@
-.PHONY: all
-
-# Shared flags etc.
-include ../Makefile.conf
-
-all: example
-
-.PHONY: example
-
-CFLAGS+=-g -Wall
-inc=$(LIBIGL_INC)
-lib=$(LIBIGL_LIB)
-
-example: example.o
-	g++ $(CFLAGS) -o example example.o $(lib)
-
-example.o: example.cpp
-	g++ $(CFLAGS) -c example.cpp -o example.o $(inc)
-clean:
-	rm -f example.o
-	rm -f example

examples/path_tests/README

@@ -1,20 +0,0 @@
-This is a simple example program that shows how to use the is_dir, is_file,
-file_exists, is_readable, is_writable, functions of the igl library
-
-
-To Build:
-  make
-
-To Run:
-  ./example [path_1] [path_2] ... [path_n]
-
-Example Run #1:
-  Issuing:
-    touch not-writable
-    touch not-readable
-    chmod u-r not-readable 
-    chmod u-w not-writable 
-    ./example       / . .. example.cpp non-existant-file not-readable not-writable > output
-    php example.php / . .. example.cpp non-existant-file not-readable not-writable > php-output
-    diff php-output output
-  should produce no differences

examples/path_tests/example.cpp

@@ -1,26 +0,0 @@
-#include <igl/file_exists.h>
-#include <igl/is_dir.h>
-#include <igl/is_file.h>
-#include <igl/is_readable.h>
-#include <igl/is_writable.h>
-using namespace igl;
-#include <cstdio>
-
-int main(int argc, char * argv[])
-{
-  if(argc <= 1)
-  {
-    printf("USAGE:\n  ./example [path_1] [path_2] ... [path_n]\n");
-    return 1;
-  }
-  // loop over arguments
-  for(int i = 1; i < argc; i++)
-  {
-    printf("file_exists(%s) --> %s\n",argv[i],(file_exists(argv[i])?"TRUE":"FALSE"));
-    printf("is_dir(%s) --> %s\n",argv[i],(is_dir(argv[i])?"TRUE":"FALSE"));
-    printf("is_file(%s) --> %s\n",argv[i],(is_file(argv[i])?"TRUE":"FALSE"));
-    printf("is_readable(%s) --> %s\n",argv[i],(is_readable(argv[i])?"TRUE":"FALSE"));
-    printf("is_writable(%s) --> %s\n",argv[i],(is_writable(argv[i])?"TRUE":"FALSE"));
-  }
-  return 0;
-}

examples/path_tests/example.php

@@ -1,15 +0,0 @@
-<?php
-  if($argc <= 1)
-  {
-    printf("USAGE:\n  php example.php [path_1] [path_2] ... [path_n]\n");
-    return 1;
-  }
-  for($i = 1; $i < $argc; $i++)
-  {
-    printf("file_exists(%s) --> %s\n",$argv[$i],(file_exists($argv[$i])?"TRUE":"FALSE"));
-    printf("is_dir(%s) --> %s\n",$argv[$i],(is_dir($argv[$i])?"TRUE":"FALSE"));
-    printf("is_file(%s) --> %s\n",$argv[$i],(is_file($argv[$i])?"TRUE":"FALSE"));
-    printf("is_readable(%s) --> %s\n",$argv[$i],(is_readable($argv[$i])?"TRUE":"FALSE"));
-    printf("is_writable(%s) --> %s\n",$argv[$i],(is_writable($argv[$i])?"TRUE":"FALSE"));
-  }
-?>

examples/pathinfo/Makefile

@@ -1,21 +0,0 @@
-.PHONY: all
-
-all: example
-
-# Shared flags etc.
-include ../Makefile.conf
-
-.PHONY: example
-
-CFLAGS+=-g -Wall 
-inc=$(LIBIGL_INC)
-lib=$(LIBIGL_LIB)
-
-example: example.o
-	g++ $(CFLAGS) -o example example.o $(lib) 
-
-example.o: example.cpp
-	g++ $(CFLAGS) $(deps) -c example.cpp -o example.o $(inc)
-clean:
-	rm -f example.o
-	rm -f example

examples/pathinfo/README

@@ -1,16 +0,0 @@
-This pair of .cpp and .php programs demonstrate the use of pathinfo. 
-
-To compile:
-  make
-
-To run C++
-  ./example
-
-To run php:
-  php example.php
-
-To run test:
-  ./example > c++_output.txt
-  php example.php > php_output.txt
-  # should find 0 differences
-  diff c++_output.txt php_output.txt

examples/pathinfo/example.cpp

@@ -1,39 +0,0 @@
-#define VERBOSE
-#include <igl/pathinfo.h>
-#include <igl/C_STR.h>
-using namespace igl;
-#include <string>
-#include <cstdio>
-#include <iostream>
-#include <fstream>
-using namespace std;
-
-int main(int argc, char * argv[])
-{
-  ifstream fin("input.txt");
-  if (fin.is_open() == false)
-  {
-    // error
-    return 1;
-  }
-
-  const char * format = "%-25s | %-10s %-10s %-10s %-10s\n";
-  printf(format,
-    "input",
-    "dirname",
-    "basename",
-    "extension",
-    "filename");
-  string line;
-  while( getline(fin, line) )
-  {
-    string dirname,basename,extension,filename;
-    pathinfo(line,dirname,basename,extension,filename);
-    printf(format,
-      C_STR("\""<<line<<"\""),
-      C_STR("\""<<dirname<<"\""),
-      C_STR("\""<<basename<<"\""),
-      C_STR("\""<<extension<<"\""),
-      C_STR("\""<<filename<<"\""));
-  }
-}

examples/pathinfo/example.php

@@ -1,17 +0,0 @@
-<?php
-  $file_handle = fopen("input.txt", "rb");
-  while (!feof($file_handle) )
-  {
-    $string = trim(fgets($file_handle));
-    if(!feof($file_handle) )
-    {
-      $p = pathinfo($string);
-      echo "$string -> ".
-        $p['dirname'].",".
-        $p['basename'].",".
-        $p['extension'].",".
-        $p['filename']."\n";
-    }
-  }
-  fclose($file_handle);
-?>

examples/pathinfo/input.txt

@@ -1,46 +0,0 @@
-/
-//
-/foo
-/foo/
-/foo//
-/foo/./
-/foo/bar
-/foo/bar.
-/foo/bar.txt
-/foo/bar.txt.zip
-/foo/bar.dir/
-/foo/bar.dir/file
-/foo/bar.dir/file.txt
-
-foo
-foo/
-foo/bar
-foo/bar.txt
-foo/bar.txt.zip
-foo/bar.dir/
-foo/bar.dir/file
-foo/bar.dir/file.txt
-.bar
-foo.
-./foo
-./foo/
-./foo/bar
-./foo/bar.txt
-./foo/bar.txt.zip
-./foo/bar.dir/
-./foo/bar.dir/file
-./foo/bar.dir/file.txt
-./.bar
-~/foo.
-~/foo
-~/foo/
-~/foo/bar
-~/foo/bar.txt
-~/foo/bar.txt.zip
-~/foo/bar.dir/
-~/foo/bar.dir/file
-~/foo/bar.dir/file.txt
-~/.bar
-~/foo.
-.
-..

examples/randomly-sample-mesh/Makefile

@@ -1,32 +0,0 @@
-.PHONY: all
-
-# Shared flags etc.
-include ../Makefile.conf
-
-all: obj example
-
-.PHONY: example
-
-INC=$(LIBIGL_INC) $(ANTTWEAKBAR_INC) $(EIGEN3_INC) $(GLUT_INC)
-LIB=$(OPENGL_LIB) $(GLUT_LIB) $(ANTTWEAKBAR_LIB) $(LIBIGL_LIB)
-
-CPP_FILES=$(wildcard ./*.cpp)
-OBJ_FILES=$(addprefix obj/,$(notdir $(CPP_FILES:.cpp=.o))) 
-
-CFLAGS+=-std=c++11
-
-example: obj $(OBJ_FILES)
-	g++ $(OPENMP) $(AFLAGS) $(CFLAGS) -o example $(OBJ_FILES) $(LIB)
-
-obj:
-	mkdir -p obj
-
-obj/%.o: %.cpp
-	g++ $(OPENMP) $(AFLAGS) $(CFLAGS) -c $< -o $@ $(INC)
-
-obj/%.o: %.cpp %.h
-	g++ $(OPENMP) $(AFLAGS) $(CFLAGS) -c $< -o $@ $(INC)
-
-clean:
-	rm -f $(OBJ_FILES)
-	rm -f example

examples/randomly-sample-mesh/example.cpp

@@ -1,611 +0,0 @@
-#include <igl/Camera.h>
-#include <igl/REDRUM.h>
-#include <igl/opengl2/draw_floor.h>
-#include <igl/opengl2/draw_mesh.h>
-#include <igl/get_seconds.h>
-#include <igl/list_to_matrix.h>
-#include <igl/material_colors.h>
-#include <igl/pathinfo.h>
-#include <igl/per_face_normals.h>
-#include <igl/polygon_mesh_to_triangle_mesh.h>
-#include <igl/quat_to_mat.h>
-#include <igl/random_points_on_mesh.h>
-#include <igl/readMESH.h>
-#include <igl/readOBJ.h>
-#include <igl/readOFF.h>
-#include <igl/readWRL.h>
-#include <igl/opengl/report_gl_error.h>
-#include <igl/snap_to_canonical_view_quat.h>
-#include <igl/snap_to_fixed_up.h>
-#include <igl/trackball.h>
-#include <igl/two_axis_valuator_fixed_up.h>
-#include <igl/writeOBJ.h>
-#include <igl/writeOFF.h>
-#include <igl/anttweakbar/ReAntTweakBar.h>
-
-#include <Eigen/Core>
-#include <Eigen/Geometry>
-
-#ifdef __APPLE__
-#include <GLUT/glut.h>
-#else
-#include <GL/glut.h>
-#endif
-
-#ifndef GLUT_WHEEL_UP
-#define GLUT_WHEEL_UP    3
-#endif
-#ifndef GLUT_WHEEL_DOWN
-#define GLUT_WHEEL_DOWN  4
-#endif
-#ifndef GLUT_WHEEL_RIGHT
-#define GLUT_WHEEL_RIGHT 5
-#endif
-#ifndef GLUT_WHEEL_LEFT
-#define GLUT_WHEEL_LEFT  6
-#endif
-#ifndef GLUT_ACTIVE_COMMAND
-#define GLUT_ACTIVE_COMMAND 8
-#endif
-
-#include <string>
-#include <vector>
-#include <stack>
-#include <iostream>
-
-
-Eigen::MatrixXd V,N,S;
-Eigen::VectorXd Vmid,Vmin,Vmax;
-double bbd = 1.0;
-Eigen::MatrixXi F;
-struct State
-{
-  igl::Camera camera;
-} s;
-
-// See README for descriptions
-enum RotationType
-{
-  ROTATION_TYPE_IGL_TRACKBALL = 0,
-  ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP = 1,
-  NUM_ROTATION_TYPES = 2,
-} rotation_type;
-
-std::stack<State> undo_stack;
-std::stack<State> redo_stack;
-
-bool is_rotating = false;
-int down_x,down_y;
-igl::Camera down_camera;
-
-bool is_animating = false;
-double animation_start_time = 0;
-double ANIMATION_DURATION = 0.5;
-Eigen::Quaterniond animation_from_quat;
-Eigen::Quaterniond animation_to_quat;
-
-int width,height;
-Eigen::Vector4f light_pos(-0.1,-0.1,0.9,0);
-
-#define REBAR_NAME "temp.rbr"
-igl::anttweakbar::ReTwBar rebar;
-
-void push_undo()
-{
-  undo_stack.push(s);
-  // Clear
-  redo_stack = std::stack<State>();
-}
-
-// No-op setter, does nothing
-void TW_CALL no_op(const void * /*value*/, void * /*clientData*/)
-{
-}
-
-void TW_CALL set_rotation_type(const void * value, void * clientData)
-{
-  using namespace Eigen;
-  using namespace std;
-  using namespace igl;
-  const RotationType old_rotation_type = rotation_type;
-  rotation_type = *(const RotationType *)(value);
-  if(rotation_type == ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP &&
-    old_rotation_type != ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP)
-  {
-    push_undo();
-    animation_from_quat = s.camera.m_rotation_conj;
-    snap_to_fixed_up(animation_from_quat,animation_to_quat);
-    // start animation
-    animation_start_time = get_seconds();
-    is_animating = true;
-  }
-}
-void TW_CALL get_rotation_type(void * value, void *clientData)
-{
-  RotationType * rt = (RotationType *)(value);
-  *rt = rotation_type;
-}
-
-void reshape(int width, int height)
-{
-  ::width = width;
-  ::height = height;
-  glViewport(0,0,width,height);
-  // Send the new window size to AntTweakBar
-  TwWindowSize(width, height);
-  s.camera.m_aspect = (double)width/(double)height;
-}
-
-void push_scene()
-{
-  using namespace igl;
-  using namespace std;
-  glMatrixMode(GL_PROJECTION);
-  glPushMatrix();
-  glLoadIdentity();
-  auto & camera = s.camera;
-  gluPerspective(camera.m_angle,camera.m_aspect,camera.m_near,camera.m_far);
-  glMatrixMode(GL_MODELVIEW);
-  glPushMatrix();
-  glLoadIdentity();
-  gluLookAt(
-    camera.eye()(0), camera.eye()(1), camera.eye()(2),
-    camera.at()(0), camera.at()(1), camera.at()(2),
-    camera.up()(0), camera.up()(1), camera.up()(2));
-}
-
-void push_object()
-{
-  using namespace igl;
-  glPushMatrix();
-  glScaled(2./bbd,2./bbd,2./bbd);
-  glTranslated(-Vmid(0),-Vmid(1),-Vmid(2));
-}
-
-void pop_object()
-{
-  glPopMatrix();
-}
-
-void pop_scene()
-{
-  glMatrixMode(GL_PROJECTION);
-  glPopMatrix();
-  glMatrixMode(GL_MODELVIEW);
-  glPopMatrix();
-}
-
-// Set up double-sided lights
-void lights()
-{
-  using namespace std;
-  using namespace Eigen;
-  glEnable(GL_LIGHTING);
-  glLightModelf(GL_LIGHT_MODEL_TWO_SIDE,GL_TRUE);
-  glEnable(GL_LIGHT0);
-  glEnable(GL_LIGHT1);
-  float WHITE[4] =  {0.8,0.8,0.8,1.};
-  float GREY[4] =  {0.4,0.4,0.4,1.};
-  float BLACK[4] =  {0.,0.,0.,1.};
-  Vector4f pos = light_pos;
-  glLightfv(GL_LIGHT0,GL_AMBIENT,GREY);
-  glLightfv(GL_LIGHT0,GL_DIFFUSE,WHITE);
-  glLightfv(GL_LIGHT0,GL_SPECULAR,BLACK);
-  glLightfv(GL_LIGHT0,GL_POSITION,pos.data());
-  pos(0) *= -1;
-  pos(1) *= -1;
-  pos(2) *= -1;
-  glLightfv(GL_LIGHT1,GL_AMBIENT,GREY);
-  glLightfv(GL_LIGHT1,GL_DIFFUSE,WHITE);
-  glLightfv(GL_LIGHT1,GL_SPECULAR,BLACK);
-  glLightfv(GL_LIGHT1,GL_POSITION,pos.data());
-}
-
-void display()
-{
-  using namespace igl;
-  using namespace std;
-  using namespace Eigen;
-  glClearColor(1,1,1,0);
-  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
-  if(is_animating)
-  {
-    double t = (get_seconds() - animation_start_time)/ANIMATION_DURATION;
-    if(t > 1)
-    {
-      t = 1;
-      is_animating = false;
-    }
-    Quaterniond q = animation_from_quat.slerp(t,animation_to_quat).normalized();
-    auto & camera = s.camera;
-    camera.orbit(q.conjugate());
-  }
-
-  glEnable(GL_DEPTH_TEST);
-  glEnable(GL_NORMALIZE);
-  lights();
-  push_scene();
-  push_object();
-
-  // Set material properties
-  glDisable(GL_COLOR_MATERIAL);
-  glMaterialfv(GL_FRONT, GL_AMBIENT,  GOLD_AMBIENT);
-  glMaterialfv(GL_FRONT, GL_DIFFUSE,  GOLD_DIFFUSE  );
-  glMaterialfv(GL_FRONT, GL_SPECULAR, GOLD_SPECULAR);
-  glMaterialf (GL_FRONT, GL_SHININESS, 128);
-  glMaterialfv(GL_BACK, GL_AMBIENT,  SILVER_AMBIENT);
-  glMaterialfv(GL_BACK, GL_DIFFUSE,  FAST_GREEN_DIFFUSE  );
-  glMaterialfv(GL_BACK, GL_SPECULAR, SILVER_SPECULAR);
-  glMaterialf (GL_BACK, GL_SHININESS, 128);
-
-
-  igl::opengl2::draw_mesh(V,F,N);
-
-  glPointSize(3.);
-  glEnable(GL_POINT_SMOOTH);
-  glColor4f(0,0.5,1,1);
-  glDisable(GL_LIGHTING);
-  glBegin(GL_POINTS);
-  for(int s = 0;s<S.rows();s++)
-  {
-    glVertex3d(S(s,0),S(s,1),S(s,2));
-  }
-  glEnd();
-
-  pop_object();
-
-  // Draw a nice floor
-  glPushMatrix();
-  const double floor_offset =
-    -2./bbd*(V.col(1).maxCoeff()-Vmid(1));
-  glTranslated(0,floor_offset,0);
-  const float GREY[4] = {0.5,0.5,0.6,1.0};
-  const float DARK_GREY[4] = {0.2,0.2,0.3,1.0};
-  igl::opengl2::draw_floor(GREY,DARK_GREY);
-  glPopMatrix();
-
-  pop_scene();
-
-  igl::opengl::report_gl_error();
-
-  TwDraw();
-  glutSwapBuffers();
-  glutPostRedisplay();
-}
-
-void mouse_wheel(int wheel, int direction, int mouse_x, int mouse_y)
-{
-  using namespace std;
-  using namespace igl;
-  using namespace Eigen;
-  GLint viewport[4];
-  glGetIntegerv(GL_VIEWPORT,viewport);
-  if(wheel == 0 && TwMouseMotion(mouse_x, viewport[3] - mouse_y))
-  {
-    static double mouse_scroll_y = 0;
-    const double delta_y = 0.125*direction;
-    mouse_scroll_y += delta_y;
-    TwMouseWheel(mouse_scroll_y);
-    return;
-  }
-  push_undo();
-
-  auto & camera = s.camera;
-  if(wheel==0)
-  {
-    // factor of zoom change
-    double s = (1.-0.01*direction);
-    //// FOV zoom: just widen angle. This is hardly ever appropriate.
-    //camera.m_angle *= s;
-    //camera.m_angle = min(max(camera.m_angle,1),89);
-    camera.push_away(s);
-  }else
-  {
-    // Dolly zoom:
-    camera.dolly_zoom((double)direction*1.0);
-  }
-}
-
-void mouse(int glutButton, int glutState, int mouse_x, int mouse_y)
-{
-  using namespace std;
-  using namespace Eigen;
-  using namespace igl;
-  bool tw_using = TwEventMouseButtonGLUT(glutButton,glutState,mouse_x,mouse_y);
-  switch(glutButton)
-  {
-    case GLUT_RIGHT_BUTTON:
-    case GLUT_LEFT_BUTTON:
-    {
-      switch(glutState)
-      {
-        case 1:
-          // up
-          glutSetCursor(GLUT_CURSOR_INHERIT);
-          is_rotating = false;
-          break;
-        case 0:
-          if(!tw_using)
-          {
-            push_undo();
-            glutSetCursor(GLUT_CURSOR_CYCLE);
-            // collect information for trackball
-            is_rotating = true;
-            down_camera = s.camera;
-            down_x = mouse_x;
-            down_y = mouse_y;
-          }
-        break;
-      }
-      break;
-    }
-    // Scroll down
-    case 3:
-    {
-      mouse_wheel(0,-1,mouse_x,mouse_y);
-      break;
-    }
-    // Scroll up
-    case 4:
-    {
-      mouse_wheel(0,1,mouse_x,mouse_y);
-      break;
-    }
-    // Scroll left
-    case 5:
-    {
-      mouse_wheel(1,-1,mouse_x,mouse_y);
-      break;
-    }
-    // Scroll right
-    case 6:
-    {
-      mouse_wheel(1,1,mouse_x,mouse_y);
-      break;
-    }
-  }
-}
-
-void mouse_drag(int mouse_x, int mouse_y)
-{
-  using namespace igl;
-  using namespace std;
-  using namespace Eigen;
-
-  if(is_rotating)
-  {
-    glutSetCursor(GLUT_CURSOR_CYCLE);
-    Quaterniond q;
-    auto & camera = s.camera;
-    switch(rotation_type)
-    {
-      case ROTATION_TYPE_IGL_TRACKBALL:
-      {
-        // Rotate according to trackball
-        igl::trackball<double>(
-          width,
-          height,
-          2.0,
-          down_camera.m_rotation_conj.coeffs().data(),
-          down_x,
-          down_y,
-          mouse_x,
-          mouse_y,
-          q.coeffs().data());
-          break;
-      }
-      case ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP:
-      {
-        // Rotate according to two axis valuator with fixed up vector
-        two_axis_valuator_fixed_up(
-          width, height,
-          2.0,
-          down_camera.m_rotation_conj,
-          down_x, down_y, mouse_x, mouse_y,
-          q);
-        break;
-      }
-      default:
-        break;
-    }
-    camera.orbit(q.conjugate());
-  }
-}
-
-void init_relative()
-{
-  using namespace Eigen;
-  using namespace igl;
-  per_face_normals(V,F,N);
-  Vmax = V.colwise().maxCoeff();
-  Vmin = V.colwise().minCoeff();
-  Vmid = 0.5*(Vmax + Vmin);
-  bbd = (Vmax-Vmin).norm();
-}
-
-void init_samples()
-{
-  using namespace Eigen;
-  using namespace igl;
-  const int n = V.rows()*10;
-  SparseMatrix<double> B;
-  VectorXi FI;
-  random_points_on_mesh(n,V,F,B,FI);
-  S = B*V;
-}
-
-void undo()
-{
-  using namespace std;
-  if(!undo_stack.empty())
-  {
-    redo_stack.push(s);
-    s = undo_stack.top();
-    undo_stack.pop();
-  }
-}
-
-void redo()
-{
-  using namespace std;
-  if(!redo_stack.empty())
-  {
-    undo_stack.push(s);
-    s = redo_stack.top();
-    redo_stack.pop();
-  }
-}
-
-void key(unsigned char key, int mouse_x, int mouse_y)
-{
-  using namespace std;
-  using namespace igl;
-  using namespace Eigen;
-  int mod = glutGetModifiers();
-  const bool command_down = GLUT_ACTIVE_COMMAND & mod;
-  const bool shift_down = GLUT_ACTIVE_SHIFT & mod;
-  switch(key)
-  {
-    // ESC
-    case char(27):
-      rebar.save(REBAR_NAME);
-    // ^C
-    case char(3):
-      exit(0);
-    case 'z':
-    case 'Z':
-      if(command_down)
-      {
-        if(shift_down)
-        {
-          redo();
-        }else
-        {
-          undo();
-        }
-        break;
-      }else
-      {
-        push_undo();
-        Quaterniond q;
-        snap_to_canonical_view_quat(s.camera.m_rotation_conj,1.0,q);
-        s.camera.orbit(q.conjugate());
-      }
-    default:
-      if(!TwEventKeyboardGLUT(key,mouse_x,mouse_y))
-      {
-        cout<<"Unknown key command: "<<key<<" "<<int(key)<<endl;
-      }
-  }
-
-}
-
-int main(int argc, char * argv[])
-{
-  using namespace std;
-  using namespace Eigen;
-  using namespace igl;
-  string filename = "../shared/cheburashka.off";
-  if(argc < 2)
-  {
-    cerr<<"Usage:"<<endl<<"    ./example input.obj"<<endl;
-    cout<<endl<<"Opening default mesh..."<<endl;
-  }else
-  {
-    // Read and prepare mesh
-    filename = argv[1];
-  }
-
-  // print key commands
-  cout<<"[Click] and [drag]  Rotate model using trackball."<<endl;
-  cout<<"[Z,z]               Snap rotation to canonical view."<<endl;
-  cout<<"[⌘ Z]               Undo."<<endl;
-  cout<<"[⇧ ⌘ Z]             Redo."<<endl;
-  cout<<"[^C,ESC]            Exit."<<endl;
-
-  // dirname, basename, extension and filename
-  string d,b,ext,f;
-  pathinfo(filename,d,b,ext,f);
-  // Convert extension to lower case
-  transform(ext.begin(), ext.end(), ext.begin(), ::tolower);
-  vector<vector<double > > vV,vN,vTC;
-  vector<vector<int > > vF,vFTC,vFN;
-  if(ext == "obj")
-  {
-    // Convert extension to lower case
-    if(!igl::readOBJ(filename,vV,vTC,vN,vF,vFTC,vFN))
-    {
-      return 1;
-    }
-  }else if(ext == "off")
-  {
-    // Convert extension to lower case
-    if(!igl::readOFF(filename,vV,vF,vN))
-    {
-      return 1;
-    }
-  }else if(ext == "wrl")
-  {
-    // Convert extension to lower case
-    if(!igl::readWRL(filename,vV,vF))
-    {
-      return 1;
-    }
-  //}else
-  //{
-  //  // Convert extension to lower case
-  //  MatrixXi T;
-  //  if(!igl::readMESH(filename,V,T,F))
-  //  {
-  //    return 1;
-  //  }
-  //  //if(F.size() > T.size() || F.size() == 0)
-  //  {
-  //    boundary_facets(T,F);
-  //  }
-  }
-  if(vV.size() > 0)
-  {
-    if(!list_to_matrix(vV,V))
-    {
-      return 1;
-    }
-    polygon_mesh_to_triangle_mesh(vF,F);
-  }
-
-  init_relative();
-  init_samples();
-
-  // Init glut
-  glutInit(&argc,argv);
-  if( !TwInit(TW_OPENGL, NULL) )
-  {
-    // A fatal error occured
-    fprintf(stderr, "AntTweakBar initialization failed: %s\n", TwGetLastError());
-    return 1;
-  }
-  // Create a tweak bar
-  rebar.TwNewBar("TweakBar");
-  rebar.TwAddVarRW("camera_rotation", TW_TYPE_QUAT4D,
-    s.camera.m_rotation_conj.coeffs().data(), "open readonly=true");
-  TwType RotationTypeTW = igl::anttweakbar::ReTwDefineEnumFromString("RotationType",
-    "igl_trackball,two-a...-fixed-up");
-  rebar.TwAddVarCB( "rotation_type", RotationTypeTW,
-    set_rotation_type,get_rotation_type,NULL,"keyIncr=] keyDecr=[");
-  rebar.load(REBAR_NAME);
-
-  // Init antweakbar
-  glutInitDisplayString( "rgba depth double samples>=8 ");
-  glutInitWindowSize(glutGet(GLUT_SCREEN_WIDTH)/2.0,glutGet(GLUT_SCREEN_HEIGHT)/2.0);
-  glutCreateWindow("upright");
-  glutDisplayFunc(display);
-  glutReshapeFunc(reshape);
-  glutKeyboardFunc(key);
-  glutMouseFunc(mouse);
-  glutMotionFunc(mouse_drag);
-  glutPassiveMotionFunc((GLUTmousemotionfun)TwEventMouseMotionGLUT);
-  glutMainLoop();
-
-  return 0;
-}

examples/render_to_png/Makefile

@@ -1,25 +0,0 @@
-.PHONY: all
-
-# Shared flags etc.
-include ../Makefile.conf
-LIBIGL_LIB+=-liglpng
-
-# YIMG dependency
-
-all: example
-
-.PHONY: example
-
-IGL=../../
-
-inc=$(LIBIGL_INC) $(YIMG_INC) $(EIGEN3_INC)
-lib=$(LIBIGL_LIB) $(OPENGL_LIB) $(GLUT_LIB) $(YIMG_LIB)
-
-example: example.o
-	g++ $(CFLAGS) -o example example.o $(lib)
-
-example.o: example.cpp
-	g++ $(CFLAGS) -c example.cpp -o example.o $(inc)
-clean:
-	rm -f example.o
-	rm -f example