1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
#include <CGAL/Simple_cartesian.h>
#include <CGAL/edge_aware_upsample_point_set.h>
#include <CGAL/IO/read_xyz_points.h>
#include <CGAL/IO/write_xyz_points.h>
#include <vector>
#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/before_upsample.xyz";
const char* output_filename = (argc>2)?argv[2]:"data/before_upsample_UPSAMPLED.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
const double sharpness_angle = 25; // control sharpness of the result.
const double edge_sensitivity = 0; // higher values will sample more points near the edges
const double neighbor_radius = 0.25; // initial size of neighborhood.
const std::size_t number_of_output_points = points.size() * 4;
//Run algorithm
CGAL::edge_aware_upsample_point_set<Concurrency_tag>(
points.begin(),
points.end(),
std::back_inserter(points),
CGAL::First_of_pair_property_map<PointVectorPair>(),
CGAL::Second_of_pair_property_map<PointVectorPair>(),
sharpness_angle,
edge_sensitivity,
neighbor_radius,
number_of_output_points);
// Saves 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;
}
|
