CGAL 6.1.1 - 2D Generalized Barycentric Coordinates

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Barycentric_coordinates_2/segment_coordinates.cpp
#include <CGAL/Exact_predicates_exact_constructions_kernel.h>
#include <CGAL/Barycentric_coordinates_2/segment_coordinates_2.h>
// Typedefs.
using Kernel = CGAL::Exact_predicates_exact_constructions_kernel;
using FT = Kernel::FT;
using Point_2 = Kernel::Point_2;
int main() {
const FT y = FT(2) / FT(5);
// Construct a segment.
const Point_2 source(FT(0), y);
const Point_2 target(FT(2), y);
// Construct three interior and two exterior query points.
const std::vector<Point_2> queries = {
Point_2(FT(2) / FT(5), y), // interior query points
Point_2(FT(5) / FT(5), y),
Point_2(FT(8) / FT(5), y),
Point_2(-FT(1) / FT(5), y), // exterior query points
Point_2(FT(11) / FT(5), y) };
// Compute segment coordinates.
std::vector<FT> coordinates;
coordinates.reserve(queries.size() * 2);
for (const auto& query : queries) {
CGAL::Barycentric_coordinates::segment_coordinates_2(
source, target, query, std::back_inserter(coordinates));
}
// Output all segment coordinates.
std::cout << std::endl << "segment coordinates (all queries): " << std::endl << std::endl;
for (std::size_t i = 0; i < coordinates.size(); i += 2) {
std::cout <<
coordinates[i + 0] << ", " <<
coordinates[i + 1] << std::endl;
}
std::cout << std::endl;
return EXIT_SUCCESS;
}
CGAL::Exact_predicates_exact_constructions_kernel
Kernel::Point_2
CGAL::Barycentric_coordinates::segment_coordinates_2
OutIterator segment_coordinates_2(const typename GeomTraits::Point_2 &p0, const typename GeomTraits::Point_2 &p1, const typename GeomTraits::Point_2 &query, OutIterator c_begin, const GeomTraits &traits)
computes segment coordinates.
Definition: segment_coordinates_2.h:70
Kernel