CGAL 5.6.3 - Point Set Processing

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Point_set_processing_3/bilateral_smooth_point_set_example.cpp
#include <CGAL/Simple_cartesian.h>
#include <CGAL/bilateral_smooth_point_set.h>
#include <CGAL/IO/read_points.h>
#include <CGAL/IO/write_points.h>
#include <CGAL/property_map.h>
#include <CGAL/tags.h>
#include <utility> // defines std::pair
#include <fstream>
// Types
typedef CGAL::Simple_cartesian<double> Kernel;
typedef Kernel::Point_3 Point;
typedef Kernel::Vector_3 Vector;
// Point with normal vector stored in a std::pair.
typedef std::pair<Point, Vector> PointVectorPair;
// Concurrency
typedef CGAL::Parallel_if_available_tag Concurrency_tag;
int main(int argc, char*argv[])
{
const std::string input_filename = (argc>1) ? argv[1] : CGAL::data_file_path("points_3/fin90_with_PCA_normals.xyz");
const char* output_filename = (argc>2) ? argv[2] : "data/fin90_with_PCA_normals_bilateral_smoothed.xyz";
// Reads a point set file in points[] * with normals *.
std::vector<PointVectorPair> points;
if(!CGAL::IO::read_points(input_filename, std::back_inserter(points),
CGAL::parameters::point_map(CGAL::First_of_pair_property_map<PointVectorPair>())
.normal_map(CGAL::Second_of_pair_property_map<PointVectorPair>())))
{
std::cerr << "Error: cannot read file " << input_filename << std::endl;
return EXIT_FAILURE;
}
// Algorithm parameters
int k = 120; // size of neighborhood. The bigger the smoother the result will be.
// This value should bigger than 1.
double sharpness_angle = 25; // control sharpness of the result.
// The bigger the smoother the result will be
int iter_number = 3; // number of times the projection is applied
for(int i = 0; i < iter_number; ++i)
{
/* double error = */
CGAL::bilateral_smooth_point_set <Concurrency_tag>(
points,
k,
CGAL::parameters::point_map(CGAL::First_of_pair_property_map<PointVectorPair>())
.normal_map(CGAL::Second_of_pair_property_map<PointVectorPair>())
.sharpness_angle(sharpness_angle));
}
if(!CGAL::IO::write_XYZ(output_filename, points,
CGAL::parameters::point_map(CGAL::First_of_pair_property_map<PointVectorPair>())
.normal_map(CGAL::Second_of_pair_property_map<PointVectorPair>())
.stream_precision(17)))
return EXIT_FAILURE;
return EXIT_SUCCESS;
}
Kernel::Point_3
Kernel::Vector_3
CGAL::IO::write_XYZ
bool write_XYZ(std::ostream &os, const PointRange &points, const NamedParameters &np=parameters::default_values())
writes the range of points (positions + normals, if available), using the XYZ File Format.
Definition: write_xyz_points.h:125
CGAL::IO::read_points
bool read_points(const std::string &fname, PointOutputIterator output, const NamedParameters &np=parameters::default_values())
reads the point set from an input file.
Definition: read_points.h:89
Kernel
CGAL::First_of_pair_property_map
CGAL::Parallel_if_available_tag
CGAL::Second_of_pair_property_map
CGAL::Simple_cartesian