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Fixed discrete authalic example 

This example is now used to illustrate the use of various border parameterizers
This commit is contained in:
Mael Rouxel-Labbé 2016-11-08 15:59:18 +01:00
parent 656d996e6f
commit bb9230f4ff
5 changed files with 38 additions and 36 deletions
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46
Surface_mesh_parameterization/examples/Surface_mesh_parameterization/discrete_authalic.cpp
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@ -1,17 +1,21 @@
#include <CGAL/Simple_cartesian.h> #include <CGAL/Simple_cartesian.h>
#include <CGAL/Surface_mesh.h> #include <CGAL/Surface_mesh.h>
#include <CGAL/Polygon_mesh_processing/measure.h> #include <CGAL/Polygon_mesh_processing/measure.h>
#include <CGAL/parameterize.h> #include <CGAL/Circular_border_parameterizer_3.h>
#include <CGAL/Discrete_authalic_parameterizer_3.h>
#include <CGAL/Square_border_parameterizer_3.h> #include <CGAL/Square_border_parameterizer_3.h>
#include <CGAL/IO/Surface_mesh_parameterization/File_off.h>
#include <CGAL/parameterize.h>
#include <CGAL/Discrete_authalic_parameterizer_3.h>
#include <boost/foreach.hpp> #include <boost/foreach.hpp>
#include <iostream> #include <iostream>
#include <cstdlib> #include <cstdlib>
#include <fstream> #include <fstream>
typedef CGAL::Simple_cartesian<double> Kernel; typedef CGAL::Simple_cartesian<double> Kernel;
typedef Kernel::Point_2 Point_2; typedef Kernel::Point_2 Point_2;
typedef Kernel::Point_3 Point_3; typedef Kernel::Point_3 Point_3;
@ -21,43 +25,39 @@ typedef boost::graph_traits<SurfaceMesh>::halfedge_descriptor halfedge_descripto
typedef boost::graph_traits<SurfaceMesh>::vertex_descriptor vertex_descriptor; typedef boost::graph_traits<SurfaceMesh>::vertex_descriptor vertex_descriptor;
typedef boost::graph_traits<SurfaceMesh>::face_descriptor face_descriptor; typedef boost::graph_traits<SurfaceMesh>::face_descriptor face_descriptor;
int main(int argc, char * argv[]) int main(int argc, char * argv[])
{ {
SurfaceMesh sm; SurfaceMesh sm;
std::ifstream in((argc>1)?argv[1]:"data/blob.off"); std::ifstream in((argc>1) ? argv[1] : "data/nefertiti.off");
std::ofstream out((argc>2)?argv[2]:"blob.polylines.txt");
in >> sm; in >> sm;
halfedge_descriptor bhd= CGAL::Polygon_mesh_processing::longest_border(sm).first halfedge_descriptor bhd = CGAL::Polygon_mesh_processing::longest_border(sm).first;
// The 2D points of the uv parametrisation will be written into this map // The 2D points of the uv parametrisation will be written into this map
SurfaceMesh::Property_map<vertex_descriptor, Point_2> uvpm; SurfaceMesh::Property_map<vertex_descriptor, Point_2> uvpm;
bool created; bool created;
boost::tie(uvpm, created) = sm.add_property_map<vertex_descriptor, Point_2>("v:uv"); boost::tie(uvpm, created) = sm.add_property_map<vertex_descriptor, Point_2>("v:uv");
typedef CGAL::Square_border_arc_length_parameterizer_3<SurfaceMesh> Border_parameterizer; // Four different border parameterizers (pick one)
typedef CGAL::Discrete_authalic_parameterizer_3<SurfaceMesh,Border_parameterizer> Parameterizer; typedef CGAL::Circular_border_uniform_parameterizer_3<SurfaceMesh> Border_parameterizer;
// typedef CGAL::Circular_border_arc_length_parameterizer_3<SurfaceMesh> Border_parameterizer;
// typedef CGAL::Square_border_uniform_parameterizer_3<SurfaceMesh> Border_parameterizer;
// typedef CGAL::Square_border_arc_length_parameterizer_3<SurfaceMesh> Border_parameterizer;
Parameterizer::Error_code err = CGAL::parameterize(sm, Parameterizer(), bhd, uvpm); // Parameterize onto a square (non-uniformly on the border)
typedef CGAL::Discrete_authalic_parameterizer_3<SurfaceMesh, Border_parameterizer>
Parameterizer;
Parameterizer::Error_code s_err = CGAL::parameterize(sm, Parameterizer(), bhd, uvpm);
if(err != Parameterizer::OK){ if(s_err != Parameterizer::OK) {
std::cerr << "Error: " << Parameterizer::get_error_message(err) << std::endl; std::cerr << "Error: " << Parameterizer::get_error_message(s_err) << std::endl;
return 1; return 1;
} }
out.precision(17); std::ofstream out("result.off");
BOOST_FOREACH(face_descriptor fd, faces(sm)){ CGAL::Parameterization::output_uvmap_to_off(sm, bhd, uvpm, out);
halfedge_descriptor hd = halfedge(fd,sm);
out << "4 " << uvpm[target(hd,sm)].x() << " " << uvpm[target(hd,sm)].y() << " 0 ";
hd = next(hd,sm);
BOOST_FOREACH(vertex_descriptor vd, vertices_around_face(hd,sm)){
out << uvpm[vd].x() << " " << uvpm[vd].y() << " 0 ";
}
out << std::endl;
}
return 0; return 0;
} }

3
Surface_mesh_parameterization/examples/Surface_mesh_parameterization/lscm.cpp
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@ -89,7 +89,8 @@ int main(int argc, char * argv[])
CGAL::parameterize(mesh, Parameterizer(), bhd, uv_pm); CGAL::parameterize(mesh, Parameterizer(), bhd, uv_pm);
} }
CGAL::Parameterization::output_uvmap_to_off(mesh, bhd, uv_pm, std::cout); std::ofstream out("result.off");
CGAL::Parameterization::output_uvmap_to_off(mesh, bhd, uv_pm, out);
return 0; return 0;
} }

2
Surface_mesh_parameterization/examples/Surface_mesh_parameterization/simple_parameterization.cpp
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@ -31,7 +31,7 @@ int main(int argc, char * argv[])
SurfaceMesh sm; SurfaceMesh sm;
in >> sm; in >> sm;
// An edge on the border // An halfedge on the border
halfedge_descriptor hd = CGAL::Polygon_mesh_processing::longest_border(sm).first; halfedge_descriptor hd = CGAL::Polygon_mesh_processing::longest_border(sm).first;
// The UV property map that holds the parameterized values // The UV property map that holds the parameterized values

1
Surface_mesh_parameterization/include/CGAL/Discrete_authalic_parameterizer_3.h
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@ -26,6 +26,7 @@
#include <CGAL/Fixed_border_parameterizer_3.h> #include <CGAL/Fixed_border_parameterizer_3.h>
#include <CGAL/Circular_border_parameterizer_3.h> #include <CGAL/Circular_border_parameterizer_3.h>
#include <CGAL/Fixed_border_parameterizer_3.h>
#include <CGAL/Eigen_solver_traits.h> #include <CGAL/Eigen_solver_traits.h>
/// \file Discrete_authalic_parameterizer_3.h /// \file Discrete_authalic_parameterizer_3.h