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#include <CGAL/Simple_cartesian.h>
#include <CGAL/property_map.h>
#include <CGAL/IO/read_xyz_points.h>
#include <CGAL/IO/write_xyz_points.h>
#include <CGAL/bilateral_smooth_point_set.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
#ifdef CGAL_LINKED_WITH_TBB
typedef CGAL::Parallel_tag Concurrency_tag;
#else
typedef CGAL::Sequential_tag Concurrency_tag;
#endif
int main(int argc, char*argv[])
{
const char* input_filename = (argc>1)?argv[1]:"data/fin90_with_PCA_normals.xyz";
const char* output_filename = (argc>2)?argv[2]:"data/fin90_with_PCA_normals_bilateral_smoothed.xyz";
// Reads a .xyz point set file in points[] * with normals *.
std::vector<PointVectorPair> points;
std::ifstream stream(input_filename);
if (!stream ||
!CGAL::read_xyz_points_and_normals(stream,
std::back_inserter(points),
CGAL::First_of_pair_property_map<PointVectorPair>(),
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.begin(),
points.end(),
CGAL::First_of_pair_property_map<PointVectorPair>(),
CGAL::Second_of_pair_property_map<PointVectorPair>(),
k,
sharpness_angle);
}
//// Save point set.
std::ofstream out(output_filename);
if (!out ||
!CGAL::write_xyz_points_and_normals(
out, points.begin(), points.end(),
CGAL::First_of_pair_property_map<PointVectorPair>(),
CGAL::Second_of_pair_property_map<PointVectorPair>()))
{
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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