libigl_Martin/include/igl/embree/project_mesh.h

// This file is part of libigl, a simple c++ geometry processing library.
// 
// Copyright (C) 2013 Daniele Panozzo <daniele.panozzo@gmail.com>
// 
// This Source Code Form is subject to the terms of the Mozilla Public License 
// v. 2.0. If a copy of the MPL was not distributed with this file, You can 
// obtain one at http://mozilla.org/MPL/2.0/.
#ifndef IGL_PROJECTMESH_H
#define IGL_PROJECTMESH_H
#include <igl/igl_inline.h>

#include <Eigen/Dense>
#include <Eigen/Sparse>
#include <vector>

namespace igl 
{

  // Project the triangle mesh V_source, F_source onto the triangle mesh
  // V_target,F_target.
  // A ray is casted for every vertex in the normal direction and its opposite.
  //
  // Input:
  // V_source: #Vx3 Vertices of the source mesh
  // F_source: #Fx3 Faces of the source mesh
  // V_target: #V2x3 Vertices of the target mesh
  // F_target: #F2x3 Faces of the target mesh
  //
  // Output:
  // #Vx3 matrix of baricentric coordinate. Each row corresponds to 
  // a vertex of the projected mesh and it has the following format:
  // id b1 b2. id is the id of a face of the source mesh. b1 and b2 are 
  // the barycentric coordinates wrt the first two edges of the triangle
  // To convert to standard global coordinates, see barycentric2global.h
  template <typename ScalarMatrix, typename IndexMatrix>
  IGL_INLINE ScalarMatrix project_mesh
  (
		const ScalarMatrix & V_source,
  	const IndexMatrix  & F_source,
    const ScalarMatrix & V_target,
    const IndexMatrix  & F_target
	);

  // Project the point cloud V_source onto the triangle mesh
  // V_target,F_target. 
  // A ray is casted for every vertex in the direction specified by 
  // N_source and its opposite.
  //
  // Input:
  // V_source: #Vx3 Vertices of the source mesh
  // N_source: #Vx3 Normals of the point cloud
  // V_target: #V2x3 Vertices of the target mesh
  // F_target: #F2x3 Faces of the target mesh
  //
  // Output:
  // #Vx3 matrix of baricentric coordinate. Each row corresponds to 
  // a vertex of the projected mesh and it has the following format:
  // id b1 b2. id is the id of a face of the source mesh. b1 and b2 are 
  // the barycentric coordinates wrt the first two edges of the triangle
  // To convert to standard global coordinates, see barycentric2global.h
  template <typename ScalarMatrix, typename IndexMatrix>
  IGL_INLINE ScalarMatrix project_points_on_mesh
  (
   const ScalarMatrix & V_source,
   const ScalarMatrix  & N_source,
   const ScalarMatrix & V_target,
   const IndexMatrix  & F_target
   );

}
#ifdef IGL_HEADER_ONLY
#  include "project_mesh.cpp"
#endif

#endif