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Ok for Surface_mesh_segmentation for BGL LCC.

This commit is contained in:
Guillaume Damiand 2017-03-31 09:34:01 -04:00
parent 7277cdb9c0
commit d7e40dc40d
3 changed files with 18 additions and 11 deletions
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1
Surface_mesh_segmentation/examples/Surface_mesh_segmentation/CMakeLists.txt
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@ -65,6 +65,7 @@ create_single_source_cgal_program( "segmentation_via_sdf_values_example.cpp" )
create_single_source_cgal_program( "segmentation_with_facet_ids_example.cpp" )
create_single_source_cgal_program( "segmentation_from_sdf_values_SM_example.cpp")
create_single_source_cgal_program( "segmentation_from_sdf_values_LCC_example.cpp")
if(OpenMesh_FOUND)
create_single_source_cgal_program( "segmentation_from_sdf_values_OpenMesh_example.cpp" )

25
Surface_mesh_segmentation/examples/Surface_mesh_segmentation/segmentation_from_sdf_values_LCC_example.cpp
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@ -1,15 +1,16 @@
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Linear_cell_complex_for_combinatorial_map.h>
#include <CGAL/Linear_cell_complex_incremental_builder_v2.h>
#include <CGAL/boost/graph/graph_traits_Linear_cell_complex.h>
#include <CGAL/mesh_segmentation.h>
#include <CGAL/property_map.h>
#include <CGAL/Unique_hash_map.h>
#include <iostream>
#include <fstream>
typedef CGAL::Exact_predicates_inexact_constructions_kernel Kernel;
typedef CGAL::Polyhedron_3<Kernel> Polyhedron;
typedef CGAL::Linear_cell_complex_traits<3, Kernel> MyTraits;
struct Myitem
@ -25,15 +26,16 @@ struct Myitem
};
typedef CGAL::Linear_cell_complex_for_combinatorial_map<2, 3, MyTraits, Myitem> LCC;
typedef typename LCC::Attribute_const_handle<2>::type Facet_const_handle;
int main()
{
// create and read Polyhedron
// create and read LCC
LCC mesh;
CGAL::load_off_v2("data/cactus.off");
CGAL::load_off_v2(mesh, "data/cactus.off");
// create a property-map for SDF values
typedef std::map<Polyhedron::Facet_const_handle, double> Facet_double_map;
typedef CGAL::Unique_hash_map<Facet_const_handle, double> Facet_double_map;
Facet_double_map internal_sdf_map;
boost::associative_property_map<Facet_double_map> sdf_property_map(internal_sdf_map);
@ -41,20 +43,23 @@ int main()
CGAL::sdf_values(mesh, sdf_property_map);
// create a property-map for segment-ids
typedef std::map<Polyhedron::Facet_const_handle, std::size_t> Facet_int_map;
typedef CGAL::Unique_hash_map<Facet_const_handle, std::size_t> Facet_int_map;
Facet_int_map internal_segment_map;
boost::associative_property_map<Facet_int_map> segment_property_map(internal_segment_map);
// segment the mesh using default parameters for number of levels, and smoothing lambda
// Any other scalar values can be used instead of using SDF values computed using the CGAL function
std::size_t number_of_segments = CGAL::segmentation_from_sdf_values(mesh, sdf_property_map, segment_property_map);
std::size_t number_of_segments = CGAL::segmentation_from_sdf_values(mesh, sdf_property_map,
segment_property_map);
std::cout << "Number of segments: " << number_of_segments << std::endl;
// print segment-ids
for(Polyhedron::Facet_const_iterator facet_it = mesh.facets_begin();
facet_it != mesh.facets_end(); ++facet_it) {
// ids are between [0, number_of_segments -1]
std::cout << segment_property_map[facet_it] << " ";
for(typename LCC::Attribute_range<2>::type::const_iterator
facet_it=mesh.template attributes<2>().begin();
facet_it!=mesh.template attributes<2>().end(); ++facet_it)
{
// ids are between [0, number_of_segments -1]
std::cout << segment_property_map[facet_it] << " ";
}
std::cout << std::endl;

3
TODO-some-files-cgal-bgl.txt
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@ -17,6 +17,8 @@ Surface_mesh_simplification/examples/Surface_mesh_simplification/edge_collapse_l
./Ridges_3/examples/Ridges_3/Ridges_Umbilics_SM.cpp
./Surface_mesh_segmentation/examples/Surface_mesh_segmentation/segmentation_from_sdf_values_LCC_example.cpp
=============================================
./Polygon_mesh_processing/examples/Polygon_mesh_processing/corefinement_LCC.cpp
@ -31,6 +33,5 @@ Surface_mesh_simplification/examples/Surface_mesh_simplification/edge_collapse_l
TODO
./Surface_mesh_segmentation/examples/Surface_mesh_segmentation/segmentation_from_sdf_values_SM_example.cpp
./Surface_mesh_skeletonization/examples/Surface_mesh_skeletonization/MCF_Skeleton_sm_example.cpp
./Surface_mesh_skeletonization/examples/Surface_mesh_skeletonization/simple_mcfskel_sm_example.cpp