#include "Viewer.h"
#ifdef _WIN32
# include <windows.h>
# undef max
# undef min
# include <GL/glew.h>
#endif
#ifdef __APPLE__
# include <OpenGL/gl3.h>
# define __gl_h_ /* Prevent inclusion of the old gl.h */
#else
# ifdef _WIN32
# include <windows.h>
# endif
# include <GL/gl.h>
#endif
#include <Eigen/LU>
#define GLFW_INCLUDE_GLU
#include <GLFW/glfw3.h>
#include <cmath>
#include <cstdio>
#include <sstream>
#include <iomanip>
#include <iostream>
#include <fstream>
#include <algorithm>
//OK NV
Eigen::Vector3f project(const Eigen::Vector3f& obj,
const Eigen::Matrix4f& model,
const Eigen::Matrix4f& proj,
const Eigen::Vector4f& viewport)
{
Eigen::Vector4f tmp;
tmp << obj,1;
tmp = model * tmp;
tmp = proj * tmp;
tmp = tmp.array() / tmp(3);
tmp = tmp.array() * 0.5f + 0.5f;
tmp(0) = tmp(0) * viewport(2) + viewport(0);
tmp(1) = tmp(1) * viewport(3) + viewport(1);
return tmp.head(3);
}
Eigen::Vector3f unproject(const Eigen::Vector3f& win,
const Eigen::Matrix4f& model,
const Eigen::Matrix4f& proj,
const Eigen::Vector4f& viewport)
{
Eigen::Matrix4f Inverse = (proj * model).inverse();
Eigen::Vector4f tmp;
tmp << win, 1;
tmp(0) = (tmp(0) - viewport(0)) / viewport(2);
tmp(1) = (tmp(1) - viewport(1)) / viewport(3);
tmp = tmp.array() * 2.0f - 1.0f;
Eigen::Vector4f obj = Inverse * tmp;
obj /= obj(3);
return obj.head(3);
}
Eigen::Matrix4f lookAt (
const Eigen::Vector3f& eye,
const Eigen::Vector3f& center,
const Eigen::Vector3f& up)
{
Eigen::Vector3f f = (center - eye).normalized();
Eigen::Vector3f s = f.cross(up).normalized();
Eigen::Vector3f u = s.cross(f);
Eigen::Matrix4f Result = Eigen::Matrix4f::Identity();
Result(0,0) = s(0);
Result(0,1) = s(1);
Result(0,2) = s(2);
Result(1,0) = u(0);
Result(1,1) = u(1);
Result(1,2) = u(2);
Result(2,0) =-f(0);
Result(2,1) =-f(1);
Result(2,2) =-f(2);
Result(0,3) =-s.transpose() * eye;
Result(1,3) =-u.transpose() * eye;
Result(2,3) = f.transpose() * eye;
return Result;
}
Eigen::Matrix4f ortho (
const float left,
const float right,
const float bottom,
const float top,
const float zNear,
const float zFar
)
{
Eigen::Matrix4f Result = Eigen::Matrix4f::Identity();
Result(0,0) = 2.0f / (right - left);
Result(1,1) = 2.0f / (top - bottom);
Result(2,2) = - 2.0f / (zFar - zNear);
Result(0,3) = - (right + left) / (right - left);
Result(1,3) = - (top + bottom) / (top - bottom);
Result(2,3) = - (zFar + zNear) / (zFar - zNear);
return Result;
}
Eigen::Matrix4f frustum (
const float left,
const float right,
const float bottom,
const float top,
const float nearVal,
const float farVal)
{
Eigen::Matrix4f Result = Eigen::Matrix4f::Zero();
Result(0,0) = (2.0f * nearVal) / (right - left);
Result(1,1) = (2.0f * nearVal) / (top - bottom);
Result(0,2) = (right + left) / (right - left);
Result(1,2) = (top + bottom) / (top - bottom);
Result(2,2) = -(farVal + nearVal) / (farVal - nearVal);
Result(3,2) = -1.0f;
Result(2,3) = -(2.0f * farVal * nearVal) / (farVal - nearVal);
return Result;
}
Eigen::Matrix4f scale (const Eigen::Matrix4f& m,
const Eigen::Vector3f& v)
{
Eigen::Matrix4f Result;
Result.col(0) = m.col(0).array() * v(0);
Result.col(1) = m.col(1).array() * v(1);
Result.col(2) = m.col(2).array() * v(2);
Result.col(3) = m.col(3);
return Result;
}
Eigen::Matrix4f translate(
const Eigen::Matrix4f& m,
const Eigen::Vector3f& v)
{
Eigen::Matrix4f Result = m;
Result.col(3) = m.col(0).array() * v(0) + m.col(1).array() * v(1) + m.col(2).array() * v(2) + m.col(3).array();
return Result;
}
#include <limits>
#include <cassert>
#ifdef ENABLE_XML_SERIALIZATION
#include "igl/xml/XMLSerializer.h"
#endif
#include "igl/readOBJ.h"
#include "igl/readOFF.h"
#include "igl/per_face_normals.h"
#include "igl/per_vertex_normals.h"
#include "igl/per_corner_normals.h"
#include "igl/vf.h"
#include "igl/adjacency_list.h"
#include "igl/writeOBJ.h"
#include "igl/writeOFF.h"
#include "igl/file_dialog_open.h"
#include "igl/file_dialog_save.h"
#include <igl/quat_to_mat.h>
#include <igl/quat_mult.h>
#include <igl/axis_angle_to_quat.h>
#include <igl/trackball.h>
#include <igl/snap_to_canonical_view_quat.h>
#include <TwOpenGLCore.h>
// Plugin manager (exported to other compilation units)
igl::Plugin_manager igl_viewer_plugin_manager;
// Internal global variables used for glfw event handling
static igl::Viewer * __viewer;
static double highdpi = 1;
static double scroll_x = 0;
static double scroll_y = 0;
/* This class extends the font rendering code in AntTweakBar
so that it can be used to render text at arbitrary 3D positions */
class TextRenderer : public CTwGraphOpenGLCore {
public:
TextRenderer() : m_shaderHandleBackup(0) { }
virtual int Init()
{
int retval = CTwGraphOpenGLCore::Init();
if (retval == 1)
{
std::string vertexShader =
"#version 150\n"
"uniform vec2 offset;"
"uniform vec2 wndSize;"
"uniform vec4 color;"
"uniform float depth;"
"in vec2 vertex;"
"in vec2 uv;"
"out vec4 fcolor;"
"out vec2 fuv;"
"void main() {"
" gl_Position = vec4(2.0*(vertex.x+offset.x-0.5)/wndSize.x - 1.0,"
" 1.0 - 2.0*(vertex.y+offset.y-0.5)/wndSize.y,"
" depth, 1);"
" fuv = uv;"
" fcolor = color;"
"}";
std::string fragmentShader =
"#version 150\n"
"uniform sampler2D tex;"
"in vec2 fuv;"
"in vec4 fcolor;"
"out vec4 outColor;"
"void main() { outColor.rgb = fcolor.bgr; outColor.a = fcolor.a * texture(tex, fuv).r; }";
if (!m_shader.init(vertexShader, fragmentShader, "outColor"))
return 0;
/* Adjust location bindings */
glBindAttribLocation(m_shader.program_shader, 0, "vertex");
glBindAttribLocation(m_shader.program_shader, 1, "uv");
glBindAttribLocation(m_shader.program_shader, 2, "color");
glLinkProgram(m_shader.program_shader);
m_shaderHandleBackup = m_TriTexUniProgram;
m_TriTexUniProgram = m_shader.program_shader;
m_TriTexUniLocationOffset = m_shader.uniform("offset");
m_TriTexUniLocationWndSize = m_shader.uniform("wndSize");
m_TriTexUniLocationColor = m_shader.uniform("color");
m_TriTexUniLocationTexture = m_shader.uniform("tex");
m_TriTexUniLocationDepth = m_shader.uniform("depth");
}
return retval;
}
virtual int Shut()
{
for (auto kv : m_textObjects)
DeleteTextObj(kv.second);
m_shader.free();
m_TriTexUniProgram = m_shaderHandleBackup;
return CTwGraphOpenGLCore::Shut();
}
void BeginDraw(const Eigen::Matrix4f &view, const Eigen::Matrix4f &proj,
const Eigen::Vector4f &_viewport, float _object_scale)
{
viewport = _viewport;
proj_matrix = proj;
view_matrix = view;
CTwGraphOpenGLCore::BeginDraw(viewport[2], viewport[3]);
glEnable(GL_DEPTH_TEST);
glDepthMask(GL_FALSE);
object_scale = _object_scale;
}
void EndDraw()
{
/* Limit the number of cached text objects */
for (auto it = m_textObjects.cbegin(); it != m_textObjects.cend(); )
{
if (m_textObjects.size() < 1000000)
break;
DeleteTextObj(it->second);
m_textObjects.erase(it++);
}
glDepthMask(GL_TRUE);
CTwGraphOpenGLCore::EndDraw();
}
void DrawText(Eigen::Vector3d pos, Eigen::Vector3d normal, const std::string &text)
{
pos += normal * 0.005f * object_scale;
Eigen::Vector3f coord = project(Eigen::Vector3f(pos(0), pos(1), pos(2)),
view_matrix, proj_matrix, viewport);
auto it = m_textObjects.find(text);
void *text_obj = nullptr;
if (it == m_textObjects.end())
{
text_obj = NewTextObj();
BuildText(text_obj, &text, NULL, NULL, 1, g_DefaultNormalFont, 0, 0);
m_textObjects[text] = text_obj;
} else {
text_obj = it->second;
}
m_shader.bind();
glUniform1f(m_TriTexUniLocationDepth, 2*(coord(2)-0.5f));
CTwGraphOpenGLCore::DrawText(text_obj, coord[0], viewport[3] - coord[1], COLOR32_BLUE, 0);
}
protected:
igl::Viewer::OpenGL_shader m_shader;
std::map<std::string, void *> m_textObjects;
GLuint m_shaderHandleBackup;
GLuint m_TriTexUniLocationDepth;
Eigen::Matrix4f view_matrix, proj_matrix;
Eigen::Vector4f viewport;
float object_scale;
};
static TextRenderer __font_renderer;
static void glfw_mouse_press(GLFWwindow* window, int button, int action, int modifier)
{
bool tw_used = TwEventMouseButtonGLFW(button, action);
igl::Viewer::MouseButton mb;
if (button == GLFW_MOUSE_BUTTON_1)
mb = igl::Viewer::IGL_LEFT;
else if (button == GLFW_MOUSE_BUTTON_2)
mb = igl::Viewer::IGL_RIGHT;
else //if (button == GLFW_MOUSE_BUTTON_3)
mb = igl::Viewer::IGL_MIDDLE;
if (action == GLFW_PRESS)
{
if(!tw_used)
{
__viewer->mouse_down(mb,modifier);
}
} else
{
// Always call mouse_up on up
__viewer->mouse_up(mb,modifier);
}
}
static void glfw_error_callback(int error, const char* description)
{
fputs(description, stderr);
}
int global_KMod = 0;
int TwEventKeyGLFW3(int glfwKey, int glfwAction)
{
int handled = 0;
// Register of modifiers state
if (glfwAction==GLFW_PRESS)
{
switch (glfwKey)
{
case GLFW_KEY_LEFT_SHIFT:
case GLFW_KEY_RIGHT_SHIFT:
global_KMod |= TW_KMOD_SHIFT;
break;
case GLFW_KEY_LEFT_CONTROL:
case GLFW_KEY_RIGHT_CONTROL:
global_KMod |= TW_KMOD_CTRL;
break;
case GLFW_KEY_LEFT_ALT:
case GLFW_KEY_RIGHT_ALT:
global_KMod |= TW_KMOD_ALT;
break;
}
}
else
{
switch (glfwKey)
{
case GLFW_KEY_LEFT_SHIFT:
case GLFW_KEY_RIGHT_SHIFT:
global_KMod &= ~TW_KMOD_SHIFT;
break;
case GLFW_KEY_LEFT_CONTROL:
case GLFW_KEY_RIGHT_CONTROL:
global_KMod &= ~TW_KMOD_CTRL;
break;
case GLFW_KEY_LEFT_ALT:
case GLFW_KEY_RIGHT_ALT:
global_KMod &= ~TW_KMOD_ALT;
break;
}
}
// Process key pressed
if (glfwAction==GLFW_PRESS)
{
int mod = global_KMod;
int testkp = ((mod&TW_KMOD_CTRL) || (mod&TW_KMOD_ALT)) ? 1 : 0;
if ((mod&TW_KMOD_CTRL) && glfwKey>0 && glfwKey<GLFW_KEY_ESCAPE ) // CTRL cases
handled = TwKeyPressed(glfwKey, mod);
else if (glfwKey>=GLFW_KEY_ESCAPE )
{
int k = 0;
if (glfwKey>=GLFW_KEY_F1 && glfwKey<=GLFW_KEY_F15)
k = TW_KEY_F1 + (glfwKey-GLFW_KEY_F1);
else if (testkp && glfwKey>=GLFW_KEY_KP_0 && glfwKey<=GLFW_KEY_KP_9)
k = '0' + (glfwKey-GLFW_KEY_KP_0);
else
{
switch (glfwKey)
{
case GLFW_KEY_ESCAPE :
k = TW_KEY_ESCAPE;
break;
case GLFW_KEY_UP:
k = TW_KEY_UP;
break;
case GLFW_KEY_DOWN:
k = TW_KEY_DOWN;
break;
case GLFW_KEY_LEFT:
k = TW_KEY_LEFT;
break;
case GLFW_KEY_RIGHT:
k = TW_KEY_RIGHT;
break;
case GLFW_KEY_TAB:
k = TW_KEY_TAB;
break;
case GLFW_KEY_ENTER:
k = TW_KEY_RETURN;
break;
case GLFW_KEY_BACKSPACE:
k = TW_KEY_BACKSPACE;
break;
case GLFW_KEY_INSERT:
k = TW_KEY_INSERT;
break;
case GLFW_KEY_DELETE:
k = TW_KEY_DELETE;
break;
case GLFW_KEY_PAGE_UP:
k = TW_KEY_PAGE_UP;
break;
case GLFW_KEY_PAGE_DOWN:
k = TW_KEY_PAGE_DOWN;
break;
case GLFW_KEY_HOME:
k = TW_KEY_HOME;
break;
case GLFW_KEY_END:
k = TW_KEY_END;
break;
case GLFW_KEY_KP_ENTER:
k = TW_KEY_RETURN;
break;
case GLFW_KEY_KP_DIVIDE:
if (testkp)
k = '/';
break;
case GLFW_KEY_KP_MULTIPLY:
if (testkp)
k = '*';
break;
case GLFW_KEY_KP_SUBTRACT:
if (testkp)
k = '-';
break;
case GLFW_KEY_KP_ADD:
if (testkp)
k = '+';
break;
case GLFW_KEY_KP_DECIMAL:
if (testkp)
k = '.';
break;
case GLFW_KEY_KP_EQUAL:
if (testkp)
k = '=';
break;
}
}
if (k>0)
handled = TwKeyPressed(k, mod);
}
}
return handled;
}
static void glfw_key_callback(GLFWwindow* window, int key, int scancode, int action, int modifier)
{
if (key == GLFW_KEY_ESCAPE && action == GLFW_PRESS)
glfwSetWindowShouldClose(window, GL_TRUE);
if (!TwEventKeyGLFW3(key,action))
{
if (action == GLFW_PRESS)
__viewer->key_down(key, modifier);
else
__viewer->key_up(key, modifier);
}
}
static void glfw_window_size(GLFWwindow* window, int width, int height)
{
int w = width*highdpi;
int h = height*highdpi;
__viewer->resize(w, h);
TwWindowSize(w, h);
const auto & bar = __viewer->bar;
// Keep AntTweakBar on right side of screen and height == opengl height
// get the current position of a bar
int size[2];
TwGetParam(bar, NULL, "size", TW_PARAM_INT32, 2, size);
int pos[2];
// Place bar on left side of opengl rect (padded by 10 pixels)
pos[0] = 10;//max(10,(int)width - size[0] - 10);
// place bar at top (padded by 10 pixels)
pos[1] = 10;
// Set height to new height of window (padded by 10 pixels on bottom)
size[1] = height-pos[1]-10;
TwSetParam(bar, NULL, "position", TW_PARAM_INT32, 2, pos);
TwSetParam(bar, NULL, "size", TW_PARAM_INT32, 2,size);
}
static void glfw_mouse_move(GLFWwindow* window, double x, double y)
{
if(!TwEventMousePosGLFW(x*highdpi,y*highdpi) || __viewer->down)
{
// Call if TwBar hasn't used or if down
__viewer->mouse_move(x*highdpi, y*highdpi);
}
}
static void glfw_mouse_scroll(GLFWwindow* window, double x, double y)
{
using namespace std;
scroll_x += x;
scroll_y += y;
if (!TwEventMouseWheelGLFW(scroll_y))
__viewer->mouse_scroll(y);
}
static void glfw_char_callback(GLFWwindow* window, unsigned int c)
{
if ((c & 0xff00)==0)
TwKeyPressed(c, global_KMod);
}
namespace igl
{
void Viewer::init(Plugin_manager* pm)
{
plugin_manager = pm;
// Create a tweak bar
bar = TwNewBar("libIGL-Viewer");
TwDefine(" libIGL-Viewer help='This is a simple 3D mesh viewer.' "); // Message added to the help bar->
TwDefine(" libIGL-Viewer size='200 685'"); // change default tweak bar size
TwDefine(" libIGL-Viewer color='76 76 127' "); // change default tweak bar color
TwDefine(" libIGL-Viewer refresh=0.5"); // change refresh rate
// ---------------------- LOADING ----------------------
#ifdef ENABLE_XML_SERIALIZATION
TwAddButton(bar,"Load Scene", load_scene_cb, this, "group='Workspace'");
TwAddButton(bar,"Save Scene", save_scene_cb, this, "group='Workspace'");
#endif
#ifdef ENABLE_IO
TwAddButton(bar,"Load Mesh", open_dialog_mesh, this, "group='Mesh' key=o");
#endif
// ---------------------- SCENE ----------------------
TwAddButton(bar,"Center object", align_camera_center_cb, this,
" group='Viewing Options'"
" label='Center object' key=A help='Set the center of the camera to the mesh center.'");
TwAddVarRW(bar, "Zoom", TW_TYPE_FLOAT, &(options.camera_zoom),
" min=0.05 max=50 step=0.1 keyIncr=+ keyDecr=- help='Scale the object (1=original size).' group='Scene'");
TwAddButton(bar,"SnapView", snap_to_canonical_quaternion_cb, this,
" group='Scene'"
" label='Snap to canonical view' key=Z "
" help='Snaps view to nearest canonical view.'");
TwAddVarRW(bar,"LightDir", TW_TYPE_DIR3F, options.light_position.data(),
" group='Scene'"
" label='Light direction' open help='Change the light direction.' ");
// ---------------------- DRAW OPTIONS ----------------------
TwAddVarRW(bar, "Toggle Orthographic/Perspective", TW_TYPE_BOOLCPP, &(options.orthographic),
" group='Viewing Options'"
" label='Orthographic view' "
" help='Toggles orthographic / perspective view. Default: perspective.'");
TwAddVarCB(bar,"Face-based Normals/Colors", TW_TYPE_BOOLCPP, set_face_based_cb, get_face_based_cb, this,
" group='Draw options'"
" label='Face-based' key=T help='Toggle per face shading/colors.' ");
TwAddVarRW(bar,"Show texture", TW_TYPE_BOOLCPP, &(options.show_texture),
" group='Draw options'");
TwAddVarCB(bar,"Invert Normals", TW_TYPE_BOOLCPP, set_invert_normals_cb, get_invert_normals_cb, this,
" group='Draw options'"
" label='Invert normals' key=i help='Invert normal directions for inside out meshes.' ");
TwAddVarRW(bar,"ShowOverlay", TW_TYPE_BOOLCPP, &(options.show_overlay),
" group='Draw options'"
" label='Show overlay' key=o help='Show the overlay layers.' ");
TwAddVarRW(bar,"ShowOverlayDepth", TW_TYPE_BOOLCPP, &(options.show_overlay_depth),
" group='Draw options'"
" label='Show overlay depth test' help='Enable the depth test for overlay layer.' ");
TwAddVarRW(bar,"Background color", TW_TYPE_COLOR3F,
options.background_color.data(),
" help='Select a background color' colormode=hls group='Draw options'");
TwAddVarRW(bar, "LineColor", TW_TYPE_COLOR3F,
options.line_color.data(),
" label='Line color' help='Select a outline color' group='Draw options'");
TwAddVarRW(bar,"Shininess",TW_TYPE_FLOAT,&options.shininess," group='Draw options'"
" min=1 max=128");
// ---------------------- Overlays ----------------------
TwAddVarRW(bar,"Wireframe", TW_TYPE_BOOLCPP, &(options.show_lines),
" group='Overlays'"
" label='Wireframe' key=l help='Toggle wire frame of mesh'");
TwAddVarRW(bar,"Fill", TW_TYPE_BOOLCPP, &(options.show_faces),
" group='Overlays'"
" label='Fill' key=t help='Display filled polygons of mesh'");
TwAddVarRW(bar,"ShowVertexId", TW_TYPE_BOOLCPP, &(options.show_vertid),
" group='Overlays'"
" label='Show Vertex Labels' key=';' help='Toggle vertex indices'");
TwAddVarRW(bar,"ShowFaceId", TW_TYPE_BOOLCPP, &(options.show_faceid),
" group='Overlays'"
" label='Show Faces Labels' key='CTRL+;' help='Toggle face"
" indices'");
__font_renderer.Init();
init_plugins();
}
Viewer::Viewer()
{
plugin_manager = 0;
// Default shininess
options.shininess = 35.0f;
// Default colors
options.background_color << 0.3f, 0.3f, 0.5f;
options.line_color << 0.0f, 0.0f, 0.0f;
// Default lights settings
options.light_position << 0.0f, -0.30f, -5.0f;
// Default trackball
options.trackball_angle << 0.0f, 0.0f, 0.0f, 1.0f;
// Defalut model viewing parameters
options.model_zoom = 1.0f;
options.model_translation << 0,0,0;
// Camera parameters
options.camera_zoom = 1.0f;
options.orthographic = false;
options.camera_view_angle = 45.0;
options.camera_dnear = 1.0;
options.camera_dfar = 100.0;
options.camera_eye << 0, 0, 5;
options.camera_center << 0, 0, 0;
options.camera_up << 0, 1, 0;
// Default visualization options
options.show_faces = true;
options.show_lines = true;
options.invert_normals = false;
options.show_overlay = true;
options.show_overlay_depth = true;
options.show_vertid = false;
options.show_faceid = false;
options.show_texture = false;
// Default point size / line width
options.point_size = 15;
options.line_width = 0.5f;
// Temporary variables initialization
down = false;
scroll_position = 0.0f;
// Per face
set_face_based(false);
// C-style callbacks
callback_pre_draw = 0;
callback_post_draw = 0;
callback_mouse_down = 0;
callback_mouse_up = 0;
callback_mouse_move = 0;
callback_mouse_scroll = 0;
callback_key_down = 0;
callback_key_up = 0;
}
void Viewer::init_plugins()
{
// Init all plugins
if (plugin_manager)
for (unsigned int i = 0; i<plugin_manager->plugin_list.size(); ++i)
plugin_manager->plugin_list[i]->init(this);
}
Viewer::~Viewer()
{
}
void Viewer::shutdown_plugins()
{
if (plugin_manager)
for (unsigned int i = 0; i<plugin_manager->plugin_list.size(); ++i)
plugin_manager->plugin_list[i]->shutdown();
}
bool Viewer::load_mesh_from_file(const char* mesh_file_name)
{
std::string mesh_file_name_string = std::string(mesh_file_name);
// first try to load it with a plugin
if (plugin_manager)
for (unsigned int i = 0; i<plugin_manager->plugin_list.size(); ++i)
if (plugin_manager->plugin_list[i]->load(mesh_file_name_string))
return true;
clear_mesh();
size_t last_dot = mesh_file_name_string.rfind('.');
if (last_dot == std::string::npos)
{
printf("Error: No file extension found in %s\n",mesh_file_name);
return false;
}
std::string extension = mesh_file_name_string.substr(last_dot+1);
if (extension == "off" || extension =="OFF")
{
if (!igl::readOFF(mesh_file_name_string, data.V, data.F))
return false;
}
else if (extension == "obj" || extension =="OBJ")
{
Eigen::MatrixXd corner_normals;
Eigen::MatrixXi fNormIndices;
Eigen::MatrixXd UV_V;
Eigen::MatrixXi UV_F;
if (!(igl::readOBJ(mesh_file_name_string, data.V, data.F, corner_normals, fNormIndices, UV_V, UV_F)))
return false;
}
else
{
// unrecognized file type
printf("Error: %s is not a recognized file type.\n",extension.c_str());
return false;
}
compute_normals();
uniform_colors(Eigen::Vector3d(51.0/255.0,43.0/255.0,33.3/255.0),
Eigen::Vector3d(255.0/255.0,228.0/255.0,58.0/255.0),
Eigen::Vector3d(255.0/255.0,235.0/255.0,80.0/255.0));
if (data.V_uv.rows() == 0)
grid_texture();
alignCameraCenter();
if (plugin_manager)
for (unsigned int i = 0; i<plugin_manager->plugin_list.size(); ++i)
if (plugin_manager->plugin_list[i]->post_load())
return true;
return true;
}
void Viewer::compute_normals()
{
igl::per_face_normals(data.V, data.F, data.F_normals);
igl::per_vertex_normals(data.V, data.F, data.F_normals, data.V_normals);
data.dirty |= DIRTY_NORMAL;
}
void Viewer::uniform_colors(Eigen::Vector3d ambient, Eigen::Vector3d diffuse, Eigen::Vector3d specular)
{
data.V_material_ambient.resize(data.V.rows(),3);
data.V_material_diffuse.resize(data.V.rows(),3);
data.V_material_specular.resize(data.V.rows(),3);
for (unsigned i=0; i<data.V.rows();++i)
{
data.V_material_ambient.row(i) = ambient;
data.V_material_diffuse.row(i) = diffuse;
data.V_material_specular.row(i) = specular;
}
data.F_material_ambient.resize(data.F.rows(),3);
data.F_material_diffuse.resize(data.F.rows(),3);
data.F_material_specular.resize(data.F.rows(),3);
for (unsigned i=0; i<data.F.rows();++i)
{
data.F_material_ambient.row(i) = ambient;
data.F_material_diffuse.row(i) = diffuse;
data.F_material_specular.row(i) = specular;
}
data.dirty |= DIRTY_SPECULAR | DIRTY_DIFFUSE | DIRTY_AMBIENT;
}
void Viewer::grid_texture()
{
if (data.V_uv.rows() == 0)
{
data.V_uv = data.V.block(0, 0, data.V.rows(), 2);
data.V_uv.col(0) = data.V_uv.col(0).array() - data.V_uv.col(0).minCoeff();
data.V_uv.col(0) = data.V_uv.col(0).array() / data.V_uv.col(0).maxCoeff();
data.V_uv.col(1) = data.V_uv.col(1).array() - data.V_uv.col(1).minCoeff();
data.V_uv.col(1) = data.V_uv.col(1).array() / data.V_uv.col(1).maxCoeff();
data.V_uv = data.V_uv.array() * 10;
data.dirty |= DIRTY_TEXTURE;
}
unsigned size = 128;
unsigned size2 = size/2;
data.texture_R.resize(size, size);
for (unsigned i=0; i<size; ++i)
{
for (unsigned j=0; j<size; ++j)
{
data.texture_R(i,j) = 0;
if ((i<size2 && j<size2) || (i>=size2 && j>=size2))
data.texture_R(i,j) = 255;
}
}
data.texture_G = data.texture_R;
data.texture_B = data.texture_R;
data.dirty |= DIRTY_TEXTURE;
}
bool Viewer::save_mesh_to_file(const char* mesh_file_name)
{
std::string mesh_file_name_string(mesh_file_name);
// first try to load it with a plugin
if (plugin_manager)
for (unsigned int i = 0; i<plugin_manager->plugin_list.size(); ++i)
if (plugin_manager->plugin_list[i]->save(mesh_file_name_string))
return true;
size_t last_dot = mesh_file_name_string.rfind('.');
if (last_dot == std::string::npos)
{
// No file type determined
printf("Error: No file extension found in %s\n",mesh_file_name);
return false;
}
std::string extension = mesh_file_name_string.substr(last_dot+1);
if (extension == "off" || extension =="OFF")
{
return igl::writeOFF(mesh_file_name_string,data.V,data.F);
}
else if (extension == "obj" || extension =="OBJ")
{
Eigen::MatrixXd corner_normals;
Eigen::MatrixXi fNormIndices;
Eigen::MatrixXd UV_V;
Eigen::MatrixXi UV_F;
return igl::writeOBJ(mesh_file_name_string, data.V,
data.F, corner_normals, fNormIndices, UV_V, UV_F);
}
else
{
// unrecognized file type
printf("Error: %s is not a recognized file type.\n",extension.c_str());
return false;
}
return true;
}
void Viewer::clear_mesh()
{
data.V = Eigen::MatrixXd (0,3);
data.F = Eigen::MatrixXi (0,3);
data.F_material_ambient = Eigen::MatrixXd (0,3);
data.F_material_diffuse = Eigen::MatrixXd (0,3);
data.F_material_specular = Eigen::MatrixXd (0,3);
data.V_material_ambient = Eigen::MatrixXd (0,3);
data.V_material_diffuse = Eigen::MatrixXd (0,3);
data.V_material_specular = Eigen::MatrixXd (0,3);
data.F_normals = Eigen::MatrixXd (0,3);
data.V_normals = Eigen::MatrixXd (0,3);
data.V_uv = Eigen::MatrixXd (0,2);
data.F_uv = Eigen::MatrixXi (0,3);
data.lines = Eigen::MatrixXd (0,9);
data.points = Eigen::MatrixXd (0,6);
data.labels_positions = Eigen::MatrixXd (0,3);
data.labels_strings.clear();
}
bool Viewer::key_down(unsigned char key, int modifiers)
{
if (callback_key_down)
if (callback_key_down(*this,key,modifiers))
return true;
if (plugin_manager)
for (unsigned int i = 0; i <plugin_manager->plugin_list.size(); ++i)
if (plugin_manager->plugin_list[i]->key_down(key, modifiers))
return true;
if (key == 'S')
mouse_scroll(1);
if (key == 'A')
mouse_scroll(-1);
if (key == 'Z')
options.trackball_angle << 0.0f, 0.0f, 0.0f, 1.0f;
if (key == 'Y')
options.trackball_angle << -sqrt(2.0f)/2.0f, 0.0f, 0.0f, sqrt(2.0f)/2.0f;
if (key == 'X')
options.trackball_angle << -0.5f, -0.5f, -0.5f, 0.5f;
return false;
}
bool Viewer::key_up(unsigned char key, int modifiers)
{
if (callback_key_up)
if (callback_key_up(*this,key,modifiers))
return true;
if (plugin_manager)
for (unsigned int i = 0; i <plugin_manager->plugin_list.size(); ++i)
if (plugin_manager->plugin_list[i]->key_up(key, modifiers))
return true;
return false;
}
bool Viewer::mouse_down(MouseButton button, int modifier)
{
if (callback_mouse_down)
if (callback_mouse_down(*this,button,modifier))
return true;
if (plugin_manager)
for (unsigned int i = 0; i < plugin_manager->plugin_list.size(); ++i)
if (plugin_manager->plugin_list[i]->mouse_down(button,modifier))
return true;
down = true;
down_mouse_x = current_mouse_x;
down_mouse_y = current_mouse_y;
down_translation = options.model_translation;
// Initialization code for the trackball
Eigen::RowVector3d center;
if (data.V.rows() == 0)
center << 0,0,0;
else
center = data.V.colwise().sum()/data.V.rows();
Eigen::Vector3f coord = project(Eigen::Vector3f(center(0),center(1),center(2)), view * model, proj, viewport);
down_mouse_z = coord[2];
down_rotation = options.trackball_angle;
mouse_mode = ROTATION;
switch (button)
{
case IGL_LEFT:
mouse_mode = ROTATION;
break;
case IGL_RIGHT:
mouse_mode = TRANSLATE;
break;
default:
mouse_mode = NOTHING;
break;
}
return true;
}
bool Viewer::mouse_up(MouseButton button, int modifier)
{
down = false;
if (callback_mouse_up)
if (callback_mouse_up(*this,button,modifier))
return true;
if (plugin_manager)
for (unsigned int i = 0; i <plugin_manager->plugin_list.size(); ++i)
if (plugin_manager->plugin_list[i]->mouse_up(button,modifier))
return true;
mouse_mode = NOTHING;
return true;
}
bool Viewer::mouse_move(int mouse_x, int mouse_y)
{
current_mouse_x = mouse_x;
current_mouse_y = mouse_y;
if (callback_mouse_move)
if (callback_mouse_move(*this,mouse_x,mouse_y))
return true;
if (plugin_manager)
for (unsigned int i = 0; i < plugin_manager->plugin_list.size(); ++i)
if (plugin_manager->plugin_list[i]->mouse_move(mouse_x, mouse_y))
return true;
if (down)
{
switch (mouse_mode)
{
case ROTATION :
{
igl::trackball(width,
height,
2.0f,
down_rotation.data(),
down_mouse_x,
down_mouse_y,
mouse_x,
mouse_y,
options.trackball_angle.data());
//Eigen::Vector4f snapq = options.trackball_angle;
break;
}
case TRANSLATE:
{
//translation
Eigen::Vector3f pos1 = unproject(Eigen::Vector3f(mouse_x, viewport[3] - mouse_y, down_mouse_z), view * model, proj, viewport);
Eigen::Vector3f pos0 = unproject(Eigen::Vector3f(down_mouse_x, viewport[3] - down_mouse_y, down_mouse_z), view * model, proj, viewport);
Eigen::Vector3f diff = pos1 - pos0;
options.model_translation = down_translation + Eigen::Vector3f(diff[0],diff[1],diff[2]);
break;
}
case ZOOM:
{
//float delta = 0.001f * (mouse_x - down_mouse_x + mouse_y - down_mouse_y);
float delta = 0.001f * (mouse_x - down_mouse_x + mouse_y - down_mouse_y);
options.camera_zoom *= 1 + delta;
down_mouse_x = mouse_x;
down_mouse_y = mouse_y;
break;
}
default:
break;
}
}
return true;
}
bool Viewer::mouse_scroll(float delta_y)
{
scroll_position += delta_y;
if (callback_mouse_scroll)
if (callback_mouse_scroll(*this,delta_y))
return true;
if (plugin_manager)
for (unsigned int i = 0; i <plugin_manager->plugin_list.size(); ++i)
if (plugin_manager->plugin_list[i]->mouse_scroll(delta_y))
return true;
// Only zoom if there's actually a change
if(delta_y != 0)
{
float mult = (1.0+((delta_y>0)?1.:-1.)*0.05);
const float min_zoom = 0.1f;
options.camera_zoom = (options.camera_zoom * mult > min_zoom ? options.camera_zoom * mult : min_zoom);
}
return true;
}
static GLuint create_shader_helper(GLint type, const std::string &shader_string)
{
using namespace std;
if (shader_string.empty())
return (GLuint) 0;
GLuint id = glCreateShader(type);
const char *shader_string_const = shader_string.c_str();
glShaderSource(id, 1, &shader_string_const, NULL);
glCompileShader(id);
GLint status;
glGetShaderiv(id, GL_COMPILE_STATUS, &status);
if (status != GL_TRUE)
{
char buffer[512];
if (type == GL_VERTEX_SHADER)
cerr << "Vertex shader:" << endl;
else if (type == GL_FRAGMENT_SHADER)
cerr << "Fragment shader:" << endl;
else if (type == GL_GEOMETRY_SHADER)
cerr << "Geometry shader:" << endl;
cerr << shader_string << endl << endl;
glGetShaderInfoLog(id, 512, NULL, buffer);
cerr << "Error: " << endl << buffer << endl;
return (GLuint) 0;
}
return id;
}
bool Viewer::OpenGL_shader::init_from_files(
const std::string &vertex_shader_filename,
const std::string &fragment_shader_filename,
const std::string &fragment_data_name,
const std::string &geometry_shader_filename,
int geometry_shader_max_vertices)
{
auto file_to_string = [](const std::string &filename)
{
std::ifstream t(filename);
return std::string((std::istreambuf_iterator<char>(t)),
std::istreambuf_iterator<char>());
};
return init(
file_to_string(vertex_shader_filename),
file_to_string(fragment_shader_filename),
fragment_data_name,
file_to_string(geometry_shader_filename),
geometry_shader_max_vertices
);
}
bool Viewer::OpenGL_shader::init(
const std::string &vertex_shader_string,
const std::string &fragment_shader_string,
const std::string &fragment_data_name,
const std::string &geometry_shader_string,
int geometry_shader_max_vertices)
{
using namespace std;
vertex_shader = create_shader_helper(GL_VERTEX_SHADER, vertex_shader_string);
geometry_shader = create_shader_helper(GL_GEOMETRY_SHADER, geometry_shader_string);
fragment_shader = create_shader_helper(GL_FRAGMENT_SHADER, fragment_shader_string);
if (!vertex_shader || !fragment_shader)
return false;
program_shader = glCreateProgram();
glAttachShader(program_shader, vertex_shader);
glAttachShader(program_shader, fragment_shader);
if (geometry_shader)
{
glAttachShader(program_shader, geometry_shader);
/* This covers only basic cases and may need to be modified */
glProgramParameteri(program_shader, GL_GEOMETRY_INPUT_TYPE, GL_TRIANGLES);
glProgramParameteri(program_shader, GL_GEOMETRY_OUTPUT_TYPE, GL_TRIANGLES);
glProgramParameteri(program_shader, GL_GEOMETRY_VERTICES_OUT, geometry_shader_max_vertices);
}
glBindFragDataLocation(program_shader, 0, fragment_data_name.c_str());
glLinkProgram(program_shader);
GLint status;
glGetProgramiv(program_shader, GL_LINK_STATUS, &status);
if (status != GL_TRUE)
{
char buffer[512];
glGetProgramInfoLog(program_shader, 512, NULL, buffer);
cerr << "Linker error: " << endl << buffer << endl;
program_shader = 0;
return false;
}
return true;
}
void Viewer::OpenGL_shader::bind()
{
glUseProgram(program_shader);
}
GLint Viewer::OpenGL_shader::attrib(const std::string &name) const
{
return glGetAttribLocation(program_shader, name.c_str());
}
GLint Viewer::OpenGL_shader::uniform(const std::string &name) const
{
return glGetUniformLocation(program_shader, name.c_str());
}
GLint Viewer::OpenGL_shader::bindVertexAttribArray(
const std::string &name, GLuint bufferID, const Eigen::MatrixXf &M, bool refresh) const
{
GLint id = attrib(name);
if (id < 0)
return id;
if (M.size() == 0)
{
glDisableVertexAttribArray(id);
return id;
}
glBindBuffer(GL_ARRAY_BUFFER, bufferID);
if (refresh)
glBufferData(GL_ARRAY_BUFFER, sizeof(float)*M.size(), M.data(), GL_DYNAMIC_DRAW);
glVertexAttribPointer(id, M.rows(), GL_FLOAT, GL_FALSE, 0, 0);
glEnableVertexAttribArray(id);
return id;
}
void Viewer::OpenGL_shader::free()
{
if (program_shader)
{
glDeleteProgram(program_shader);
program_shader = 0;
}
if (vertex_shader)
{
glDeleteShader(vertex_shader);
vertex_shader = 0;
}
if (fragment_shader)
{
glDeleteShader(fragment_shader);
fragment_shader = 0;
}
if (geometry_shader)
{
glDeleteShader(geometry_shader);
geometry_shader = 0;
}
}
void Viewer::OpenGL_state::init()
{
// Mesh: Vertex Array Object & Buffer objects
glGenVertexArrays(1, &vao_mesh);
glBindVertexArray(vao_mesh);
glGenBuffers(1, &vbo_V);
glGenBuffers(1, &vbo_V_normals);
glGenBuffers(1, &vbo_V_ambient);
glGenBuffers(1, &vbo_V_diffuse);
glGenBuffers(1, &vbo_V_specular);
glGenBuffers(1, &vbo_V_uv);
glGenBuffers(1, &vbo_F);
glGenTextures(1, &vbo_tex);
// Line overlay
glGenVertexArrays(1, &vao_overlay_lines);
glBindVertexArray(vao_overlay_lines);
glGenBuffers(1, &vbo_lines_F);
glGenBuffers(1, &vbo_lines_V);
glGenBuffers(1, &vbo_lines_V_colors);
// Point overlay
glGenVertexArrays(1, &vao_overlay_points);
glBindVertexArray(vao_overlay_points);
glGenBuffers(1, &vbo_points_F);
glGenBuffers(1, &vbo_points_V);
glGenBuffers(1, &vbo_points_V_colors);
dirty = DIRTY_ALL;
}
void Viewer::OpenGL_state::free()
{
glDeleteVertexArrays(1, &vao_mesh);
glDeleteVertexArrays(1, &vao_overlay_lines);
glDeleteVertexArrays(1, &vao_overlay_points);
glDeleteBuffers(1, &vbo_V);
glDeleteBuffers(1, &vbo_V_normals);
glDeleteBuffers(1, &vbo_V_ambient);
glDeleteBuffers(1, &vbo_V_diffuse);
glDeleteBuffers(1, &vbo_V_specular);
glDeleteBuffers(1, &vbo_V_uv);
glDeleteBuffers(1, &vbo_F);
glDeleteBuffers(1, &vbo_lines_F);
glDeleteBuffers(1, &vbo_lines_V);
glDeleteBuffers(1, &vbo_lines_V_colors);
glDeleteBuffers(1, &vbo_points_F);
glDeleteBuffers(1, &vbo_points_V);
glDeleteBuffers(1, &vbo_points_V_colors);
glDeleteTextures(1, &vbo_tex);
}
void Viewer::OpenGL_state::set_data(const Data &data, bool face_based, bool invert_normals)
{
bool per_corner_uv = (data.F_uv.rows() == data.F.rows());
bool per_corner_normals = (data.F_normals.rows() == 3 * data.F.rows());
dirty |= data.dirty;
if (!face_based)
{
if (!per_corner_uv)
{
// Vertex positions
if (dirty & DIRTY_POSITION)
V_vbo = (data.V.transpose()).cast<float>();
// Vertex normals
if (dirty & DIRTY_NORMAL)
{
V_normals_vbo = (data.V_normals.transpose()).cast<float>();
if (invert_normals)
V_normals_vbo = -V_normals_vbo;
}
// Per-vertex material settings
if (dirty & DIRTY_AMBIENT)
V_ambient_vbo = (data.V_material_ambient.transpose()).cast<float>();
if (dirty & DIRTY_DIFFUSE)
V_diffuse_vbo = (data.V_material_diffuse.transpose()).cast<float>();
if (dirty & DIRTY_SPECULAR)
V_specular_vbo = (data.V_material_specular.transpose()).cast<float>();
// Face indices
if (dirty & DIRTY_FACE)
F_vbo = (data.F.transpose()).cast<unsigned>();
// Texture coordinates
if (dirty & DIRTY_UV)
V_uv_vbo = (data.V_uv.transpose()).cast<float>();
}
else
{
// Per vertex properties with per corner UVs
if (dirty & DIRTY_POSITION)
{
V_vbo.resize(3,data.F.rows()*3);
for (unsigned i=0; i<data.F.rows();++i)
for (unsigned j=0;j<3;++j)
V_vbo.col(i*3+j) = data.V.row(data.F(i,j)).transpose().cast<float>();
}
if (dirty & DIRTY_AMBIENT)
{
V_ambient_vbo.resize(3,data.F.rows()*3);
for (unsigned i=0; i<data.F.rows();++i)
for (unsigned j=0;j<3;++j)
V_ambient_vbo.col (i*3+j) = data.V_material_ambient.row(data.F(i,j)).transpose().cast<float>();
}
if (dirty & DIRTY_DIFFUSE)
{
V_diffuse_vbo.resize(3,data.F.rows()*3);
for (unsigned i=0; i<data.F.rows();++i)
for (unsigned j=0;j<3;++j)
V_diffuse_vbo.col (i*3+j) = data.V_material_diffuse.row(data.F(i,j)).transpose().cast<float>();
}
if (dirty & DIRTY_SPECULAR)
{
V_specular_vbo.resize(3,data.F.rows()*3);
for (unsigned i=0; i<data.F.rows();++i)
for (unsigned j=0;j<3;++j)
V_specular_vbo.col(i*3+j) = data.V_material_specular.row(data.F(i,j)).transpose().cast<float>();
}
if (dirty & DIRTY_NORMAL)
{
V_normals_vbo.resize(3,data.F.rows()*3);
for (unsigned i=0; i<data.F.rows();++i)
for (unsigned j=0;j<3;++j)
V_normals_vbo.col (i*3+j) = data.V_normals.row(data.F(i,j)).transpose().cast<float>();
if (invert_normals)
V_normals_vbo = -V_normals_vbo;
}
if (dirty & DIRTY_FACE)
{
F_vbo.resize(3,data.F.rows());
for (unsigned i=0; i<data.F.rows();++i)
F_vbo.col(i) << i*3+0, i*3+1, i*3+2;
}
if (dirty & DIRTY_UV)
{
V_uv_vbo.resize(2,data.F.rows()*3);
for (unsigned i=0; i<data.F.rows();++i)
for (unsigned j=0;j<3;++j)
V_uv_vbo.col(i*3+j) = data.V_uv.row(data.F(i,j)).transpose().cast<float>();
}
}
}
else
{
if (dirty & DIRTY_POSITION)
{
V_vbo.resize(3,data.F.rows()*3);
for (unsigned i=0; i<data.F.rows();++i)
for (unsigned j=0;j<3;++j)
V_vbo.col(i*3+j) = data.V.row(data.F(i,j)).transpose().cast<float>();
}
if (dirty & DIRTY_AMBIENT)
{
V_ambient_vbo.resize(3,data.F.rows()*3);
for (unsigned i=0; i<data.F.rows();++i)
for (unsigned j=0;j<3;++j)
V_ambient_vbo.col (i*3+j) = data.F_material_ambient.row(i).transpose().cast<float>();
}
if (dirty & DIRTY_DIFFUSE)
{
V_diffuse_vbo.resize(3,data.F.rows()*3);
for (unsigned i=0; i<data.F.rows();++i)
for (unsigned j=0;j<3;++j)
V_diffuse_vbo.col (i*3+j) = data.F_material_diffuse.row(i).transpose().cast<float>();
}
if (dirty & DIRTY_SPECULAR)
{
V_specular_vbo.resize(3,data.F.rows()*3);
for (unsigned i=0; i<data.F.rows();++i)
for (unsigned j=0;j<3;++j)
V_specular_vbo.col(i*3+j) = data.F_material_specular.row(i).transpose().cast<float>();
}
if (dirty & DIRTY_NORMAL)
{
V_normals_vbo.resize(3,data.F.rows()*3);
for (unsigned i=0; i<data.F.rows();++i)
for (unsigned j=0;j<3;++j)
V_normals_vbo.col (i*3+j) =
per_corner_normals ?
data.F_normals.row(i*3+j).transpose().cast<float>() :
data.F_normals.row(i).transpose().cast<float>();
if (invert_normals)
V_normals_vbo = -V_normals_vbo;
}
if (dirty & DIRTY_FACE)
{
F_vbo.resize(3,data.F.rows());
for (unsigned i=0; i<data.F.rows();++i)
F_vbo.col(i) << i*3+0, i*3+1, i*3+2;
}
if (dirty & DIRTY_UV)
{
V_uv_vbo.resize(2,data.F.rows()*3);
for (unsigned i=0; i<data.F.rows();++i)
for (unsigned j=0;j<3;++j)
V_uv_vbo.col(i*3+j) = data.V_uv.row(per_corner_uv ? data.F_uv(i,j) : data.F(i,j)).transpose().cast<float>();
}
}
if (dirty & DIRTY_TEXTURE)
{
tex_u = data.texture_R.rows();
tex_v = data.texture_R.cols();
tex.resize(data.texture_R.size()*3);
for (unsigned i=0;i<data.texture_R.size();++i)
{
tex(i*3+0) = data.texture_R(i);
tex(i*3+1) = data.texture_G(i);
tex(i*3+2) = data.texture_B(i);
}
}
if (dirty & DIRTY_OVERLAY_LINES)
{
lines_V_vbo.resize(3, data.lines.rows()*2);
lines_V_colors_vbo.resize(3, data.lines.rows()*2);
lines_F_vbo.resize(1, data.lines.rows()*2);
for (unsigned i=0; i<data.lines.rows();++i)
{
lines_V_vbo.col(2*i+0) = data.lines.block<1, 3>(i, 0).transpose().cast<float>();
lines_V_vbo.col(2*i+1) = data.lines.block<1, 3>(i, 3).transpose().cast<float>();
lines_V_colors_vbo.col(2*i+0) = data.lines.block<1, 3>(i, 6).transpose().cast<float>();
lines_V_colors_vbo.col(2*i+1) = data.lines.block<1, 3>(i, 6).transpose().cast<float>();
lines_F_vbo(2*i+0) = 2*i+0;
lines_F_vbo(2*i+1) = 2*i+1;
}
}
if (dirty & DIRTY_OVERLAY_POINTS)
{
points_V_vbo.resize(3, data.points.rows());
points_V_colors_vbo.resize(3, data.points.rows());
points_F_vbo.resize(1, data.points.rows());
for (unsigned i=0; i<data.points.rows();++i)
{
points_V_vbo.col(i) = data.points.block<1, 3>(i, 0).transpose().cast<float>();
points_V_colors_vbo.col(i) = data.points.block<1, 3>(i, 3).transpose().cast<float>();
points_F_vbo(i) = i;
}
}
}
void Viewer::OpenGL_state::bind_mesh()
{
glBindVertexArray(vao_mesh);
shader_mesh.bind();
shader_mesh.bindVertexAttribArray("position", vbo_V, V_vbo, dirty & DIRTY_POSITION);
shader_mesh.bindVertexAttribArray("normal", vbo_V_normals, V_normals_vbo, dirty & DIRTY_NORMAL);
shader_mesh.bindVertexAttribArray("Ka", vbo_V_ambient, V_ambient_vbo, dirty & DIRTY_AMBIENT);
shader_mesh.bindVertexAttribArray("Kd", vbo_V_diffuse, V_diffuse_vbo, dirty & DIRTY_DIFFUSE);
shader_mesh.bindVertexAttribArray("Ks", vbo_V_specular, V_specular_vbo, dirty & DIRTY_SPECULAR);
shader_mesh.bindVertexAttribArray("texcoord", vbo_V_uv, V_uv_vbo, dirty & DIRTY_UV);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, vbo_F);
if (dirty & DIRTY_FACE)
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(unsigned)*F_vbo.size(), F_vbo.data(), GL_DYNAMIC_DRAW);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, vbo_tex);
if (dirty & DIRTY_TEXTURE)
{
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, tex_u, tex_v, 0, GL_RGB, GL_UNSIGNED_BYTE, tex.data());
}
glUniform1i(shader_mesh.uniform("tex"), 0);
dirty &= ~DIRTY_MESH;
}
void Viewer::OpenGL_state::bind_overlay_lines()
{
bool is_dirty = dirty & DIRTY_OVERLAY_LINES;
glBindVertexArray(vao_overlay_lines);
shader_overlay_lines.bind();
shader_overlay_lines.bindVertexAttribArray("position", vbo_lines_V, lines_V_vbo, is_dirty);
shader_overlay_lines.bindVertexAttribArray("color", vbo_lines_V_colors, lines_V_colors_vbo, is_dirty);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, vbo_lines_F);
if (is_dirty)
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(unsigned)*lines_F_vbo.size(), lines_F_vbo.data(), GL_DYNAMIC_DRAW);
dirty &= ~DIRTY_OVERLAY_LINES;
}
void Viewer::OpenGL_state::bind_overlay_points()
{
bool is_dirty = dirty & DIRTY_OVERLAY_POINTS;
glBindVertexArray(vao_overlay_points);
shader_overlay_points.bind();
shader_overlay_points.bindVertexAttribArray("position", vbo_points_V, points_V_vbo, is_dirty);
shader_overlay_points.bindVertexAttribArray("color", vbo_points_V_colors, points_V_colors_vbo, is_dirty);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, vbo_points_F);
if (is_dirty)
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(unsigned)*points_F_vbo.size(), points_F_vbo.data(), GL_DYNAMIC_DRAW);
dirty &= ~DIRTY_OVERLAY_POINTS;
}
void Viewer::OpenGL_state::draw_mesh(bool solid)
{
glPolygonMode(GL_FRONT_AND_BACK, solid ? GL_FILL : GL_LINE);
/* Avoid Z-buffer fighting between filled triangles & wireframe lines */
if (solid)
{
glEnable(GL_POLYGON_OFFSET_FILL);
glPolygonOffset(1.0, 1.0);
}
glDrawElements(GL_TRIANGLES, 3*F_vbo.cols(), GL_UNSIGNED_INT, 0);
glDisable(GL_POLYGON_OFFSET_FILL);
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
}
void Viewer::OpenGL_state::draw_overlay_lines()
{
glDrawElements(GL_LINES, lines_F_vbo.cols(), GL_UNSIGNED_INT, 0);
}
void Viewer::OpenGL_state::draw_overlay_points()
{
glDrawElements(GL_POINTS, points_F_vbo.cols(), GL_UNSIGNED_INT, 0);
}
void Viewer::init_opengl()
{
std::string mesh_vertex_shader_string =
"#version 150\n"
"uniform mat4 model;"
"uniform mat4 view;"
"uniform mat4 proj;"
"in vec3 position;"
"in vec3 normal;"
"out vec3 position_eye;"
"out vec3 normal_eye;"
"in vec3 Ka;"
"in vec3 Kd;"
"in vec3 Ks;"
"in vec2 texcoord;"
"out vec2 texcoordi;"
"out vec3 Kai;"
"out vec3 Kdi;"
"out vec3 Ksi;"
"void main()"
"{"
" position_eye = vec3 (view * model * vec4 (position, 1.0));"
" normal_eye = vec3 (view * model * vec4 (normal, 0.0));"
" normal_eye = normalize(normal_eye);"
" gl_Position = proj * vec4 (position_eye, 1.0);" //proj * view * model * vec4(position, 1.0);"
" Kai = Ka;"
" Kdi = Kd;"
" Ksi = Ks;"
" texcoordi = texcoord;"
"}";
std::string mesh_fragment_shader_string =
"#version 150\n"
"uniform mat4 model;"
"uniform mat4 view;"
"uniform mat4 proj;"
"uniform vec4 fixed_color;"
"in vec3 position_eye;"
"in vec3 normal_eye;"
"uniform vec3 light_position_world;"
"vec3 Ls = vec3 (1, 1, 1);"
"vec3 Ld = vec3 (1, 1, 1);"
"vec3 La = vec3 (1, 1, 1);"
"in vec3 Ksi;"
"in vec3 Kdi;"
"in vec3 Kai;"
"in vec2 texcoordi;"
"uniform sampler2D tex;"
"uniform float specular_exponent;"
"uniform float lighting_factor;"
"uniform float texture_factor;"
"out vec4 outColor;"
"void main()"
"{"
"vec3 Ia = La * Kai;" // ambient intensity
"vec3 light_position_eye = vec3 (view * vec4 (light_position_world, 1.0));"
"vec3 distance_to_light_eye = light_position_eye - position_eye;"
"vec3 direction_to_light_eye = normalize (distance_to_light_eye);"
"float dot_prod = dot (direction_to_light_eye, normal_eye);"
"dot_prod = max (dot_prod, 0.0);"
"vec3 Id = Ld * Kdi * dot_prod;" // Diffuse intensity
"vec3 reflection_eye = reflect (-direction_to_light_eye, normal_eye);"
"vec3 surface_to_viewer_eye = normalize (-position_eye);"
"float dot_prod_specular = dot (reflection_eye, surface_to_viewer_eye);"
"dot_prod_specular = max (dot_prod_specular, 0.0);"
"float specular_factor = pow (dot_prod_specular, specular_exponent);"
"vec3 Is = Ls * Ksi * specular_factor;" // specular intensity
"vec4 color = vec4(lighting_factor * (Is + Id) + Ia, 1.0);"
"outColor = mix(vec4(1,1,1,1), texture(tex, texcoordi), texture_factor) * color;"
"if (fixed_color != vec4(0.0)) outColor = fixed_color;"
"}";
std::string overlay_vertex_shader_string =
"#version 150\n"
"uniform mat4 model;"
"uniform mat4 view;"
"uniform mat4 proj;"
"in vec3 position;"
"in vec3 color;"
"out vec3 color_frag;"
"void main()"
"{"
" gl_Position = proj * view * model * vec4 (position, 1.0);"
" color_frag = color;"
"}";
std::string overlay_fragment_shader_string =
"#version 150\n"
"in vec3 color_frag;"
"out vec4 outColor;"
"void main()"
"{"
" outColor = vec4(color_frag, 1.0);"
"}";
std::string overlay_point_fragment_shader_string =
"#version 150\n"
"in vec3 color_frag;"
"out vec4 outColor;"
"void main()"
"{"
" if (length(gl_PointCoord - vec2(0.5)) > 0.5)"
" discard;"
" outColor = vec4(color_frag, 1.0);"
"}";
opengl.init();
opengl.shader_mesh.init(mesh_vertex_shader_string,
mesh_fragment_shader_string, "outColor");
opengl.shader_overlay_lines.init(overlay_vertex_shader_string,
overlay_fragment_shader_string, "outColor");
opengl.shader_overlay_points.init(overlay_vertex_shader_string,
overlay_point_fragment_shader_string, "outColor");
}
void Viewer::free_opengl()
{
opengl.shader_mesh.free();
opengl.shader_overlay_lines.free();
opengl.shader_overlay_points.free();
opengl.free();
__font_renderer.Shut();
}
void Viewer::draw()
{
using namespace std;
using namespace Eigen;
glClearColor(options.background_color[0],
options.background_color[1],
options.background_color[2],
1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glEnable(GL_DEPTH_TEST);
if (callback_pre_draw)
if (callback_pre_draw(*this))
return;
if (plugin_manager)
for (unsigned int i = 0; i <plugin_manager->plugin_list.size(); ++i)
if (plugin_manager->plugin_list[i]->pre_draw())
return;
/* Bind and potentially refresh mesh/line/point data */
if (data.dirty)
{
opengl.set_data(data, options.face_based, options.invert_normals);
data.dirty = DIRTY_NONE;
}
opengl.bind_mesh();
// Initialize uniform
glViewport(0, 0, width, height);
model = Eigen::Matrix4f::Identity();
view = Eigen::Matrix4f::Identity();
proj = Eigen::Matrix4f::Identity();
// Set view
view = lookAt(Eigen::Vector3f(options.camera_eye[0], options.camera_eye[1], options.camera_eye[2]),
Eigen::Vector3f(options.camera_center[0], options.camera_center[1], options.camera_center[2]),
Eigen::Vector3f(options.camera_up[0], options.camera_up[1], options.camera_up[2]));
// Set projection
if (options.orthographic)
{
float length = (options.camera_eye - options.camera_center).norm();
float h = tan(options.camera_view_angle/360.0 * M_PI) * (length);
proj = ortho(-h*width/height, h*width/height, -h, h, options.camera_dnear, options.camera_dfar);
}
else
{
float fH = tan(options.camera_view_angle / 360.0 * M_PI) * options.camera_dnear;
float fW = fH * (double)width/(double)height;
proj = frustum(-fW, fW, -fH, fH, options.camera_dnear, options.camera_dfar);
}
// end projection
// Set model transformation
float mat[16];
igl::quat_to_mat(options.trackball_angle.data(), mat);
for (unsigned i=0;i<4;++i)
for (unsigned j=0;j<4;++j)
model(i,j) = mat[i+4*j];
model = scale(model, Eigen::Vector3f(options.camera_zoom,options.camera_zoom,options.camera_zoom));
model = scale(model, Eigen::Vector3f(options.model_zoom,options.model_zoom,options.model_zoom));
model = translate(model, Eigen::Vector3f(options.model_translation[0],options.model_translation[1],options.model_translation[2]));
// Send transformations to the GPU
GLint modeli = opengl.shader_mesh.uniform("model");
GLint viewi = opengl.shader_mesh.uniform("view");
GLint proji = opengl.shader_mesh.uniform("proj");
glUniformMatrix4fv(modeli, 1, GL_FALSE, model.data());
glUniformMatrix4fv(viewi, 1, GL_FALSE, view.data());
glUniformMatrix4fv(proji, 1, GL_FALSE, proj.data());
// Light parameters
GLint specular_exponenti = opengl.shader_mesh.uniform("specular_exponent");
GLint light_position_worldi = opengl.shader_mesh.uniform("light_position_world");
GLint lighting_factori = opengl.shader_mesh.uniform("lighting_factor");
GLint fixed_colori = opengl.shader_mesh.uniform("fixed_color");
GLint texture_factori = opengl.shader_mesh.uniform("texture_factor");
glUniform1f(specular_exponenti, options.shininess);
Vector3f rev_light = -1.*options.light_position;
glUniform3fv(light_position_worldi, 1, rev_light.data());
glUniform1f(lighting_factori, 1.0f); // enables lighting
glUniform4f(fixed_colori, 0.0, 0.0, 0.0, 0.0);
if (data.V.rows()>0)
{
// Render fill
if (options.show_faces)
{
// Texture
glUniform1f(texture_factori, options.show_texture ? 1.0f : 0.0f);
opengl.draw_mesh(true);
glUniform1f(texture_factori, 0.0f);
}
// Render wireframe
if (options.show_lines)
{
glLineWidth(options.line_width);
glUniform4f(fixed_colori, options.line_color[0], options.line_color[1],
options.line_color[2], 1.0f);
opengl.draw_mesh(false);
glUniform4f(fixed_colori, 0.0f, 0.0f, 0.0f, 0.0f);
}
if (options.show_vertid)
{
__font_renderer.BeginDraw(view*model, proj, viewport, data.object_scale);
for (int i=0; i<data.V.rows(); ++i)
__font_renderer.DrawText(data.V.row(i), data.V_normals.row(i), to_string(i));
__font_renderer.EndDraw();
}
if (options.show_faceid)
{
__font_renderer.BeginDraw(view*model, proj, viewport, data.object_scale);
for (int i=0; i<data.F.rows(); ++i)
{
Eigen::RowVector3d p = Eigen::RowVector3d::Zero();
for (int j=0;j<data.F.cols();++j)
p += data.V.row(data.F(i,j));
p /= data.F.cols();
__font_renderer.DrawText(p, data.F_normals.row(i), to_string(i));
}
__font_renderer.EndDraw();
}
}
if (options.show_overlay)
{
if (options.show_overlay_depth)
glEnable(GL_DEPTH_TEST);
else
glDisable(GL_DEPTH_TEST);
if (data.lines.rows() > 0)
{
opengl.bind_overlay_lines();
modeli = opengl.shader_overlay_lines.uniform("model");
viewi = opengl.shader_overlay_lines.uniform("view");
proji = opengl.shader_overlay_lines.uniform("proj");
glUniformMatrix4fv(modeli, 1, GL_FALSE, model.data());
glUniformMatrix4fv(viewi, 1, GL_FALSE, view.data());
glUniformMatrix4fv(proji, 1, GL_FALSE, proj.data());
glLineWidth(options.line_width);
opengl.draw_overlay_lines();
}
if (data.points.rows() > 0)
{
opengl.bind_overlay_points();
modeli = opengl.shader_overlay_points.uniform("model");
viewi = opengl.shader_overlay_points.uniform("view");
proji = opengl.shader_overlay_points.uniform("proj");
glUniformMatrix4fv(modeli, 1, GL_FALSE, model.data());
glUniformMatrix4fv(viewi, 1, GL_FALSE, view.data());
glUniformMatrix4fv(proji, 1, GL_FALSE, proj.data());
glPointSize(options.point_size);
opengl.draw_overlay_points();
}
if (data.labels_positions.rows() > 0)
{
__font_renderer.BeginDraw(view*model, proj, viewport, data.object_scale);
for (int i=0; i<data.labels_positions.rows(); ++i)
__font_renderer.DrawText(data.labels_positions.row(i), Eigen::Vector3d(0.0,0.0,0.0),
data.labels_strings[i]);
__font_renderer.EndDraw();
}
glEnable(GL_DEPTH_TEST);
}
if (callback_post_draw)
if (callback_post_draw(*this))
return;
if (plugin_manager)
for (unsigned int i = 0; i <plugin_manager->plugin_list.size(); ++i)
if (plugin_manager->plugin_list[i]->post_draw())
break;
TwDraw();
}
bool Viewer::save_scene()
{
#ifdef ENABLE_XML_SERIALIZATION
string fname = igl::file_dialog_save();
if (fname.length() == 0)
return false;
::igl::XMLSerializer serializer("Viewer");
serializer.Add(data,"Data");
serializer.Add(options,"Options");
if (plugin_manager)
for (unsigned int i = 0; i <plugin_manager->plugin_list.size(); ++i)
serializer.Add(*(plugin_manager->plugin_list[i]),plugin_manager->plugin_list[i]->plugin_name);
serializer.Save(fname.c_str(),true);
#endif
return true;
}
bool Viewer::load_scene()
{
#ifdef ENABLE_XML_SERIALIZATION
string fname = igl::file_dialog_open();
if (fname.length() == 0)
return false;
::igl::XMLSerializer serializer("Viewer");
serializer.Add(data,"Data");
serializer.Add(options,"Options");
if (plugin_manager)
for (unsigned int i = 0; i <plugin_manager->plugin_list.size(); ++i)
serializer.Add(*(plugin_manager->plugin_list[i]),plugin_manager->plugin_list[i]->plugin_name);
serializer.Load(fname.c_str());
#endif
return true;
}
void Viewer::alignCameraCenter()
{
get_scale_and_shift_to_fit_mesh(data.V,options.model_zoom,options.model_translation);
data.object_scale = (data.V.colwise().maxCoeff() - data.V.colwise().minCoeff()).norm();
}
void Viewer::resize(int w, int h)
{
width = w;
height = h;
viewport = Eigen::Vector4f(0,0,width,height);
}
void Viewer::get_scale_and_shift_to_fit_mesh(const Eigen::MatrixXd& vertices,
float& zoom,
Eigen::Vector3f& shift)
{
if (vertices.rows() == 0)
return;
//Compute mesh centroid
Eigen::RowVector3d centroid = vertices.colwise().sum()/vertices.rows();
Eigen::RowVector3d min_point = vertices.colwise().minCoeff();
Eigen::RowVector3d max_point = vertices.colwise().maxCoeff();
shift = -centroid.cast<float>();
double x_scale = fabs(max_point[0] - min_point[0]);
double y_scale = fabs(max_point[1] - min_point[1]);
double z_scale = fabs(max_point[2] - min_point[2]);
zoom = 2.0/ std::max(z_scale,std::max(x_scale,y_scale));
}
void TW_CALL Viewer::snap_to_canonical_quaternion_cb(void *clientData)
{
Eigen::Vector4f snapq = static_cast<Viewer *>(clientData)->options.trackball_angle;
igl::snap_to_canonical_view_quat<float>(snapq.data(),1,static_cast<Viewer *>(clientData)->options.trackball_angle.data());
}
void TW_CALL Viewer::align_camera_center_cb(void *clientData)
{
static_cast<Viewer *>(clientData)->alignCameraCenter();
}
void TW_CALL Viewer::save_scene_cb(void *clientData)
{
static_cast<Viewer *>(clientData)->save_scene();
}
void TW_CALL Viewer::load_scene_cb(void *clientData)
{
static_cast<Viewer *>(clientData)->load_scene();
}
void TW_CALL Viewer::set_invert_normals_cb(const void *param, void *clientData)
{
Viewer *viewer = static_cast<Viewer *>(clientData);
viewer->data.dirty |= Viewer::DIRTY_NORMAL;
viewer->options.invert_normals = *((bool *) param);
}
void TW_CALL Viewer::get_invert_normals_cb(void *param, void *clientData)
{
*((bool *) param) = static_cast<Viewer *>(clientData)->options.invert_normals;
}
void TW_CALL Viewer::set_face_based_cb(const void *param, void *clientData)
{
Viewer *viewer = static_cast<Viewer *>(clientData);
viewer->set_face_based(*((bool *) param));
}
void TW_CALL Viewer::get_face_based_cb(void *param, void *clientData)
{
*((bool *) param) = static_cast<Viewer *>(clientData)->options.face_based;
}
void TW_CALL Viewer::open_dialog_mesh(void *clientData)
{
std::string fname = igl::file_dialog_open();
if (fname.length() == 0)
return;
static_cast<Viewer *>(clientData)->load_mesh_from_file(fname.c_str());
}
// Serialization
void Viewer::Options::InitSerialization()
{
#ifdef ENABLE_XML_SERIALIZATION
xmlSerializer->Add(shininess, "shininess");
xmlSerializer->Add(background_color, "background_color");
xmlSerializer->Add(line_color, "line_color");
xmlSerializer->Add(light_position, "light_position");
xmlSerializer->Add(trackball_angle, "trackball_angle");
xmlSerializer->Add(model_zoom, "model_zoom");
xmlSerializer->Add(model_translation, "model_translation");
xmlSerializer->Add(model_zoom_uv, "model_zoom_uv");
xmlSerializer->Add(model_translation_uv, "model_translation_uv");
xmlSerializer->Add(camera_zoom, "camera_zoom");
xmlSerializer->Add(orthographic, "orthographic");
xmlSerializer->Add(camera_eye, "camera_eye");
xmlSerializer->Add(camera_up, "camera_up");
xmlSerializer->Add(camera_center, "camera_center");
xmlSerializer->Add(camera_view_angle, "camera_view_angle");
xmlSerializer->Add(camera_dnear, "camera_dnear");
xmlSerializer->Add(camera_dfar, "camera_dfar");
xmlSerializer->Add(show_overlay, "show_overlay");
xmlSerializer->Add(show_overlay_depth, "show_overlay_depth");
xmlSerializer->Add(show_texture, "show_texture");
xmlSerializer->Add(show_faces, "show_faces");
xmlSerializer->Add(show_lines, "show_lines");
xmlSerializer->Add(show_vertid, "show_vertid");
xmlSerializer->Add(show_faceid, "show_faceid");
xmlSerializer->Add(point_size, "point_size");
xmlSerializer->Add(line_width, "line_width");
xmlSerializer->Add(invert_normals, "invert_normals");
xmlSerializer->Add(face_based, "face_based");
#endif
}
void Viewer::Data::InitSerialization()
{
#ifdef ENABLE_XML_SERIALIZATION
xmlSerializer->Add(V,"V");
xmlSerializer->Add(F,"F");
xmlSerializer->Add(F_normals,"F_normals");
xmlSerializer->Add(F_material_ambient,"F_material_ambient");
xmlSerializer->Add(F_material_diffuse,"F_material_diffuse");
xmlSerializer->Add(F_material_specular,"F_material_specular");
xmlSerializer->Add(V_normals,"V_normals");
xmlSerializer->Add(V_material_ambient,"V_material_ambient");
xmlSerializer->Add(V_material_diffuse,"V_material_diffuse");
xmlSerializer->Add(V_material_specular,"V_material_specular");
xmlSerializer->Add(V_uv,"V_uv");
xmlSerializer->Add(F_uv,"F_uv");
xmlSerializer->Add(texture_R,"texture_R");
xmlSerializer->Add(texture_G,"texture_G");
xmlSerializer->Add(texture_B,"texture_B");
xmlSerializer->Add(lines,"lines");
xmlSerializer->Add(points,"points");
xmlSerializer->Add(labels_positions,"labels_positions");
xmlSerializer->Add(labels_strings,"labels_strings");
#endif
}
void Viewer::set_face_based(bool newvalue)
{
if (options.face_based != newvalue)
{
options.face_based = newvalue;
data.dirty = DIRTY_ALL;
}
}
// Helpers that draws the most common meshes
void Viewer::set_mesh(const Eigen::MatrixXd& V, const Eigen::MatrixXi& F)
{
using namespace std;
Eigen::MatrixXd V_temp;
// If V only has two columns, pad with a column of zeros
if (V.cols() == 2)
{
V_temp = Eigen::MatrixXd::Zero(V.rows(),3);
V_temp.block(0,0,V.rows(),2) = V;
}
else
V_temp = V;
if (data.V.rows() == 0 && data.F.rows() == 0)
{
clear_mesh();
data.V = V_temp;
data.F = F;
compute_normals();
uniform_colors(Eigen::Vector3d(51.0/255.0,43.0/255.0,33.3/255.0),
Eigen::Vector3d(255.0/255.0,228.0/255.0,58.0/255.0),
Eigen::Vector3d(255.0/255.0,235.0/255.0,80.0/255.0));
grid_texture();
alignCameraCenter();
}
else
{
if (data.V.rows() == V.rows() && data.F.rows() == F.rows())
{
data.V = V_temp;
data.F = F;
alignCameraCenter();
}
else
cerr << "ERROR (set_mesh): The new mesh has a different number of vertices/faces. Please clear the mesh before plotting.";
}
data.dirty |= DIRTY_FACE | DIRTY_POSITION;
}
void Viewer::set_normals(const Eigen::MatrixXd& N)
{
using namespace std;
if (N.rows() == data.V.rows())
{
set_face_based(false);
data.V_normals = N;
}
else if (N.rows() == data.F.rows() || N.rows() == data.F.rows()*3)
{
set_face_based(true);
data.F_normals = N;
}
else
cerr << "ERROR (set_normals): Please provide a normal per face, per corner or per vertex.";
data.dirty |= DIRTY_NORMAL;
}
void Viewer::set_colors(const Eigen::MatrixXd &C)
{
using namespace std;
using namespace Eigen;
// Ambient color should be darker color
const auto ambient = [](const MatrixXd & C)->MatrixXd
{
return 0.1*C;
};
// Specular color should be a less saturated and darker color: dampened
// highlights
const auto specular = [](const MatrixXd & C)->MatrixXd
{
const double grey = 0.3;
return grey+0.1*(C.array()-grey);
};
if (C.rows() == 1)
{
for (unsigned i=0;i<data.V_material_diffuse.rows();++i)
{
data.V_material_diffuse.row(i) = C.row(0);
}
data.V_material_ambient = ambient(data.V_material_diffuse);
data.V_material_specular = specular(data.V_material_diffuse);
for (unsigned i=0;i<data.F_material_diffuse.rows();++i)
{
data.F_material_diffuse.row(i) = C.row(0);
}
data.F_material_ambient = ambient(data.F_material_diffuse);
data.F_material_specular = specular(data.F_material_diffuse);
}
else if (C.rows() == data.V.rows())
{
set_face_based(false);
data.V_material_diffuse = C;
data.V_material_ambient = ambient(data.V_material_diffuse);
data.V_material_specular = specular(data.V_material_diffuse);
}
else if (C.rows() == data.F.rows())
{
set_face_based(true);
data.F_material_diffuse = C;
data.F_material_ambient = ambient(data.F_material_diffuse);
data.F_material_specular = specular(data.F_material_diffuse);
}
else
cerr << "ERROR (set_colors): Please provide a single color, or a color per face or per vertex.";
data.dirty |= DIRTY_DIFFUSE;
}
void Viewer::set_uv(const Eigen::MatrixXd& UV)
{
using namespace std;
if (UV.rows() == data.V.rows())
{
set_face_based(false);
data.V_uv = UV;
}
else
cerr << "ERROR (set_UV): Please provide uv per vertex.";
data.dirty |= DIRTY_UV;
}
void Viewer::set_uv(const Eigen::MatrixXd& UV_V, const Eigen::MatrixXi& UV_F)
{
set_face_based(true);
data.V_uv = UV_V;
data.F_uv = UV_F;
data.dirty |= DIRTY_UV;
}
void Viewer::set_texture(
const Eigen::Matrix<char,Eigen::Dynamic,Eigen::Dynamic>& R,
const Eigen::Matrix<char,Eigen::Dynamic,Eigen::Dynamic>& G,
const Eigen::Matrix<char,Eigen::Dynamic,Eigen::Dynamic>& B)
{
data.texture_R = R;
data.texture_G = G;
data.texture_B = B;
data.dirty |= DIRTY_TEXTURE;
}
void Viewer::add_points(const Eigen::MatrixXd& P, const Eigen::MatrixXd& C)
{
int lastid = data.points.rows();
data.points.conservativeResize(data.points.rows() + P.rows(),6);
for (unsigned i=0; i<P.rows(); ++i)
data.points.row(lastid+i) << P.row(i), i<C.rows() ? C.row(i) : C.row(C.rows()-1);
data.dirty |= DIRTY_OVERLAY_POINTS;
}
void Viewer::add_edges(const Eigen::MatrixXd& P1, const Eigen::MatrixXd& P2, const Eigen::MatrixXd& C)
{
int lastid = data.lines.rows();
data.lines.conservativeResize(data.lines.rows() + P1.rows(),9);
for (unsigned i=0; i<P1.rows(); ++i)
data.lines.row(lastid+i) << P1.row(i), P2.row(i), i<C.rows() ? C.row(i) : C.row(C.rows()-1);
data.dirty |= DIRTY_OVERLAY_LINES;
}
void Viewer::add_label(const Eigen::VectorXd& P, const std::string& str)
{
int lastid = data.labels_positions.rows();
data.labels_positions.conservativeResize(lastid+1, 3);
data.labels_positions.row(lastid) = P;
data.labels_strings.push_back(str);
}
void Viewer::launch(std::string filename)
{
GLFWwindow* window;
glfwSetErrorCallback(glfw_error_callback);
if (!glfwInit())
exit(EXIT_FAILURE);
glfwWindowHint(GLFW_SAMPLES, 16);
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
window = glfwCreateWindow(1280, 800, "IGL Viewer", NULL, NULL);
if (!window)
{
glfwTerminate();
exit(EXIT_FAILURE);
}
glfwMakeContextCurrent(window);
#ifdef _WIN32
glewExperimental = true;
GLenum err = glewInit();
if (GLEW_OK != err)
{
/* Problem: glewInit failed, something is seriously wrong. */
fprintf(stderr, "Error: %s\n", glewGetErrorString(err));
}
fprintf(stdout, "Status: Using GLEW %s\n", glewGetString(GLEW_VERSION));
#endif
#ifdef DEBUG
int major, minor, rev;
major = glfwGetWindowAttrib(window, GLFW_CONTEXT_VERSION_MAJOR);
minor = glfwGetWindowAttrib(window, GLFW_CONTEXT_VERSION_MINOR);
rev = glfwGetWindowAttrib(window, GLFW_CONTEXT_REVISION);
printf("OpenGL version recieved: %d.%d.%d\n", major, minor, rev);
printf("Supported OpenGL is %s\n", (const char*)glGetString(GL_VERSION));
printf("Supported GLSL is %s\n", (const char*)glGetString(GL_SHADING_LANGUAGE_VERSION));
#endif
glfwSetInputMode(window,GLFW_CURSOR,GLFW_CURSOR_NORMAL);
// Initialize AntTweakBar
TwInit(TW_OPENGL_CORE, NULL);
// Initialize IGL viewer
init(&igl_viewer_plugin_manager);
__viewer = this;
// Register callbacks
glfwSetKeyCallback(window, glfw_key_callback);
glfwSetCursorPosCallback(window,glfw_mouse_move);
glfwSetWindowSizeCallback(window,glfw_window_size);
glfwSetMouseButtonCallback(window,glfw_mouse_press);
glfwSetScrollCallback(window,glfw_mouse_scroll);
glfwSetCharCallback(window, glfw_char_callback);
// Handle retina displays (windows and mac)
int width, height;
glfwGetFramebufferSize(window, &width, &height);
int width_window, height_window;
glfwGetWindowSize(window, &width_window, &height_window);
highdpi = width/width_window;
glfw_window_size(window,width_window,height_window);
init_opengl();
// Load the mesh passed as input
if (filename.size() > 0)
load_mesh_from_file(filename.c_str());
// Rendering loop
while (!glfwWindowShouldClose(window))
{
draw();
glfwSwapBuffers(window);
//glfwPollEvents();
glfwWaitEvents();
}
free_opengl();
shutdown_plugins();
glfwDestroyWindow(window);
glfwTerminate();
exit(EXIT_SUCCESS);
}
} // end namespace