CGAL 6.2 - Polygonal Surface Reconstruction: Polygonal_surface_reconstruction/polyfit_example_model_complexity_control.cpp

CGAL 6.2 - Polygonal Surface Reconstruction

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Polygonal_surface_reconstruction/polyfit_example_model_complexity_control.cpp
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/IO/read_points.h>
#include <CGAL/property_map.h>
#include <CGAL/Surface_mesh.h>
#include <CGAL/Polygonal_surface_reconstruction.h>
#ifdef CGAL_USE_SCIP // defined (or not) by CMake scripts, do not define by hand
#include <CGAL/SCIP_mixed_integer_program_traits.h>
typedef CGAL::SCIP_mixed_integer_program_traits<double> MIP_Solver;
#elif defined(CGAL_USE_GLPK) // defined (or not) by CMake scripts, do not define by hand
#include <CGAL/GLPK_mixed_integer_program_traits.h>
typedef CGAL::GLPK_mixed_integer_program_traits<double> MIP_Solver;
#endif
#if defined(CGAL_USE_GLPK) || defined(CGAL_USE_SCIP)
#include <CGAL/Timer.h>
#include <fstream>
typedef CGAL::Exact_predicates_inexact_constructions_kernel Kernel;
typedef Kernel::Point_3 Point;
typedef Kernel::Vector_3 Vector;
typedef CGAL::Polygonal_surface_reconstruction<Kernel> Polygonal_surface_reconstruction;
typedef CGAL::Surface_mesh<Point> Surface_mesh;
// Point with normal, and plane index
typedef boost::tuple<Point, Vector, int> PNI;
typedef CGAL::Nth_of_tuple_property_map<0, PNI> Point_map;
typedef CGAL::Nth_of_tuple_property_map<1, PNI> Normal_map;
typedef CGAL::Nth_of_tuple_property_map<2, PNI> Plane_index_map;
/*
* The following example shows how to control the model complexity by
* increasing the influence of the model complexity term.
* In this example, the intermediate results from plane extraction and
* candidate generation are cached and reused.
*/
int main(int argc, char* argv[])
{
const std::string input_file = (argc > 1) ? argv[1] : CGAL::data_file_path("points_3/building.ply");
std::ifstream input_stream(input_file.c_str());
std::vector<PNI> points; // store points
std::cout << "Loading point cloud: " << input_file << "...";
CGAL::Timer t;
t.start();
if (!CGAL::IO::read_PLY_with_properties(input_stream,
std::back_inserter(points),
CGAL::IO::make_ply_point_reader(Point_map()),
CGAL::IO::make_ply_normal_reader(Normal_map()),
std::make_pair(Plane_index_map(), CGAL::IO::PLY_property<int>("segment_index"))))
{
std::cerr << "Error: cannot read file " << input_file << std::endl;
return EXIT_FAILURE;
}
else
std::cout << " Done. " << points.size() << " points. Time: " << t.time() << " sec." << std::endl;
std::cout << "Generating candidate faces...";
t.reset();
Polygonal_surface_reconstruction algo(
points,
Point_map(),
Normal_map(),
Plane_index_map()
);
std::cout << " Done. Time: " << t.time() << " sec." << std::endl;
// Reconstruction with complexity control
// Model 1: more detail
Surface_mesh model;
std::cout << "Reconstructing with complexity 0.05...";
t.reset();
if (!algo.reconstruct<MIP_Solver>(model, 0.8, 0.15, 0.05)) {
std::cerr << " Failed: " << algo.error_message() << std::endl;
return EXIT_FAILURE;
}
else {
const std::string& output_file = "building_result-0.05.off";
if (CGAL::IO::write_OFF(output_file, model)) {
std::cout << " Done. Saved to " << output_file << ". Time: " << t.time() << " sec." << std::endl;
}
else {
std::cerr << " Failed saving file." << std::endl;
return EXIT_FAILURE;
}
}
// Model 2: a little less detail
std::cout << "Reconstructing with complexity 0.5...";
t.reset();
if (!algo.reconstruct<MIP_Solver>(model, 0.3, 0.2, 0.5)) {
std::cerr << " Failed: " << algo.error_message() << std::endl;
return EXIT_FAILURE;
}
else {
const std::string& output_file = "building_result-0.5.off";
if (CGAL::IO::write_OFF(output_file, model))
std::cout << " Done. Saved to " << output_file << ". Time: " << t.time() << " sec." << std::endl;
else {
std::cerr << " Failed saving file." << std::endl;
return EXIT_FAILURE;
}
}
// Model 3: more less detail
std::cout << "Reconstructing with complexity 0.7...";
t.reset();
if (!algo.reconstruct<MIP_Solver>(model, 0.2, 0.1, 0.7)) {
std::cerr << " Failed: " << algo.error_message() << std::endl;
return EXIT_FAILURE;
}
else {
const std::string& output_file = "building_result-0.7.off";
if (CGAL::IO::write_OFF(output_file, model)){
std::cout << " Done. Saved to " << output_file << ". Time: " << t.time() << " sec." << std::endl;
}
else {
std::cerr << " Failed saving file." << std::endl;
return EXIT_FAILURE;
}
}
return EXIT_SUCCESS;
}
#else
int main(int, char**)
{
std::cerr << "This test requires either GLPK or SCIP.\n";
return EXIT_SUCCESS;
}
#endif // defined(CGAL_USE_GLPK) || defined(CGAL_USE_SCIP)
CGAL::Exact_predicates_inexact_constructions_kernel
CGAL::GLPK_mixed_integer_program_traits
CGAL::Polygonal_surface_reconstruction
Implementation of the Polygonal Surface Reconstruction method.
Definition: Polygonal_surface_reconstruction.h:58
CGAL::SCIP_mixed_integer_program_traits
CGAL::Surface_mesh
Kernel::Point_3
Kernel::Vector_3
CGAL::IO::write_OFF
bool write_OFF(std::ostream &os, const Surface_mesh< Point > &sm, const NamedParameters &np=parameters::default_values())
Kernel