CGAL 5.2 - Point Set Processing
Point_set_processing_3/read_ply_points_with_colors_example.cpp
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/property_map.h>
#include <CGAL/IO/read_ply_points.h>
#include <utility>
#include <vector>
#include <fstream>
// types
typedef Kernel::FT FT;
typedef Kernel::Point_3 Point;
typedef Kernel::Vector_3 Vector;
typedef std::array<unsigned char, 3> Color;
// Point with normal, color and intensity
typedef std::tuple<Point, Vector, Color, int> PNCI;
int main(int argc, char*argv[])
{
const char* fname = (argc>1) ? argv[1] : "data/colors.ply";
// Reads a .ply point set file with normal vectors and colors
std::vector<PNCI> points; // store points
std::ifstream in(fname);
if (!in ||
(in,
std::back_inserter (points),
std::make_pair (Intensity_map(),
CGAL::PLY_property<int>("intensity")),
std::make_tuple (Color_map(),
))
{
std::cerr << "Error: cannot read file " << fname << std::endl;
return EXIT_FAILURE;
}
// Display points read
for (std::size_t i = 0; i < points.size (); ++ i)
{
const Point& p = get<0>(points[i]);
const Vector& n = get<1>(points[i]);
const Color& c = get<2>(points[i]);
int I = get<3>(points[i]);
std::cerr << "Point (" << p << ") with normal (" << n
<< "), color (" << int(c[0]) << " " << int(c[1]) << " " << int(c[2])
<< ") and intensity " << I << std::endl;
}
return EXIT_SUCCESS;
}