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
|
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Point_set_3.h>
#include <fstream>
#include <limits>
typedef CGAL::Exact_predicates_inexact_constructions_kernel Kernel;
typedef Kernel::FT FT;
typedef Kernel::Point_3 Point;
typedef Kernel::Vector_3 Vector;
typedef CGAL::Point_set_3<Point> Point_set;
int main (int argc, char** argv)
{
std::ifstream f(argc > 1 ? argv[1] : CGAL::data_file_path("points_3/example.ply"),
std::ios_base::binary); // Mandatory on Windows if input is binary PLY
Point_set point_set;
if(!CGAL::IO::read_PLY(f, point_set)) // same as `f >> point_set`
{
std::cerr << "Can't read input file " << std::endl;
return EXIT_FAILURE;
}
// Shows which properties are defined
std::vector<std::string> properties = point_set.properties();
std::cerr << "Properties:" << std::endl;
for(std::size_t i = 0; i < properties.size(); ++ i)
std::cerr << " * " << properties[i] << std::endl;
// Recover "label" property of type int
std::optional<Point_set::Property_map<std::int32_t>> label_prop = point_set.property_map<std::int32_t> ("label");
if(label_prop.has_value())
{
std::cerr << "Point set has an integer \"label\" property with values:" << std::endl;
for (Point_set::iterator it = point_set.begin(); it != point_set.end(); ++ it)
std::cerr << " * " << (*label_prop)[*it] << std::endl;
}
if(argc > 2 && strcmp (argv[2], "-b") == 0) // Optional binary output
{
CGAL::IO::write_PLY("out.ply", point_set, CGAL::parameters::stream_precision(17));
}
else // ASCII output
{
CGAL::IO::write_PLY("out.ply", point_set, CGAL::parameters::stream_precision(17)
.use_binary_mode(false));
}
return 0;
}
|
