CGAL 6.1.1 - Scale-Space Surface Reconstruction

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Scale_space_reconstruction_3/scale_space_sm.cpp
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Scale_space_surface_reconstruction_3.h>
#include <CGAL/IO/read_points.h>
#include <CGAL/Surface_mesh.h>
#include <CGAL/Polygon_mesh_processing/orient_polygon_soup.h>
#include <CGAL/Polygon_mesh_processing/polygon_soup_to_polygon_mesh.h>
#include <fstream>
#include <iostream>
typedef CGAL::Exact_predicates_inexact_constructions_kernel Kernel;
typedef CGAL::Scale_space_surface_reconstruction_3< Kernel > Reconstruction;
typedef CGAL::Scale_space_reconstruction_3::Weighted_PCA_smoother< Kernel > Smoother;
typedef CGAL::Scale_space_reconstruction_3::Alpha_shape_mesher< Kernel > Mesher;
typedef Reconstruction::Point Point;
typedef Reconstruction::Facet_const_iterator Facet_iterator;
typedef CGAL::Surface_mesh<Point> Surface_mesh;
typedef boost::graph_traits<Surface_mesh>::vertex_descriptor vertex_descriptor;
int main(int argc, char* argv[]) {
// Read the data
std::string fname = argc==1?CGAL::data_file_path("points_3/kitten.off"):argv[1];
std::cerr << "Reading " << std::flush;
std::vector<Point> points;
if(!CGAL::IO::read_points(fname, std::back_inserter(points)))
{
std::cerr << "Error: cannot read file" << std::endl;
return EXIT_FAILURE;
}
std::cerr << "done: " << points.size() << " points." << std::endl;
// Construct the mesh in a scale space.
Reconstruction reconstruct(points.begin(), points.end() );
Smoother smoother(10, 200 );
reconstruct.increase_scale(4, smoother);
Mesher mesher(smoother.squared_radius(),
false, // Do not separate shells
true // Force manifold output
);
reconstruct.reconstruct_surface(mesher);
Reconstruction::Point_range smoothed(reconstruct.points());
Reconstruction::Facet_range polygons(reconstruct.facets());
CGAL::Polygon_mesh_processing::orient_polygon_soup(smoothed, polygons);
Surface_mesh mesh;
CGAL::Polygon_mesh_processing::polygon_soup_to_polygon_mesh(smoothed, polygons, mesh);
// Also store the input points as vertex property
Surface_mesh::Property_map<vertex_descriptor, Point> original;
bool created;
std::tie(original, created) = mesh.add_property_map<vertex_descriptor,Point>("v:original");
assert(created);
int i = 0;
for(auto v : vertices(mesh)){
put(original, v, points[i++]);
}
std::cerr << "Done." << std::endl;
return EXIT_SUCCESS;
}
CGAL::Exact_predicates_inexact_constructions_kernel
CGAL::Scale_space_reconstruction_3::Alpha_shape_mesher
Surface mesher for scale space reconstruction based on CGAL::Alpha_shape_3.
Definition: Alpha_shape_mesher.h:64
CGAL::Scale_space_reconstruction_3::Weighted_PCA_smoother
Smoother for scale space reconstruction based on a principal component analysis weighted by the local...
Definition: Weighted_PCA_smoother.h:71
CGAL::Scale_space_surface_reconstruction_3
computes a triangulated surface mesh interpolating a point set.
Definition: Scale_space_surface_reconstruction_3.h:48
CGAL::Polygon_mesh_processing::polygon_soup_to_polygon_mesh
void polygon_soup_to_polygon_mesh(const PointRange &points, const PolygonRange &polygons, PolygonMesh &out, const NamedParameters_PS &np_ps=parameters::default_values(), const NamedParameters_PM &np_pm=parameters::default_values())
CGAL::Polygon_mesh_processing::orient_polygon_soup
bool orient_polygon_soup(PointRange &points, PolygonRange &polygons, const NamedParameters &np=parameters::default_values())
CGAL::IO::read_points
bool read_points(const std::string &fname, PointOutputIterator output, const NamedParameters &np=parameters::default_values())
Kernel