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cgal/Polygon_mesh_processing/test/Polygon_mesh_processing/issue_7164.cpp
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#include <CGAL/Surface_mesh.h>
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Polygon_mesh_processing/polygon_soup_to_polygon_mesh.h>
#include <CGAL/Polygon_mesh_processing/distance.h>
#include <CGAL/Random.h>
using Kernel = CGAL::Exact_predicates_inexact_constructions_kernel;
using Point_3 = Kernel::Point_3;
using Mesh = CGAL::Surface_mesh<Point_3>;
namespace PMP = CGAL::Polygon_mesh_processing;
int main(/*int argc, char** argv*/)
{
// A simple triangle
std::vector<Point_3> pts_A;
std::vector<std::vector<size_t>> trs_A;
pts_A.emplace_back( 0.26641936088212415, 0.2664193608821242, 0.73358063911787585);
pts_A.emplace_back(-0.14011519816541251, 0.6017979969632727, 1.1810107045967466);
pts_A.emplace_back(-0.14011519816541279,-0.1810107045967464, 0.39820200303672726);
trs_A.emplace_back(std::vector<size_t>{0,1,2});
Mesh A;
PMP::polygon_soup_to_polygon_mesh(pts_A, trs_A, A);
// An open tetrahedron
std::vector<Point_3> pts_B;
std::vector<std::vector<size_t>> trs_B;
pts_B.emplace_back(0,0,0);
pts_B.emplace_back(1,1,0);
pts_B.emplace_back(1,0,1);
pts_B.emplace_back(0,1,1);
trs_B.emplace_back(std::vector<size_t>{0,1,2});
trs_B.emplace_back(std::vector<size_t>{3,1,0});
trs_B.emplace_back(std::vector<size_t>{3,2,1});
Mesh B;
PMP::polygon_soup_to_polygon_mesh(pts_B, trs_B, B);
double bound = 0.01 * 0.42149467833714593;
PMP::bounded_error_Hausdorff_distance<CGAL::Sequential_tag>(A, B, bound);
PMP::bounded_error_Hausdorff_distance<CGAL::Sequential_tag>(B, A, bound);
// The bug was possible with closed models
std::vector<Point_3> pts_C;
std::vector<std::vector<size_t>> trs_C;
pts_C.emplace_back(0,0,0);
pts_C.emplace_back(1,1,0);
pts_C.emplace_back(1,0,1);
pts_C.emplace_back(0,1,1);
pts_C.emplace_back(0.75,0.75,0);
trs_C.emplace_back(std::vector<size_t>{0,1,2});
trs_C.emplace_back(std::vector<size_t>{3,1,0});
trs_C.emplace_back(std::vector<size_t>{3,2,1});
trs_C.emplace_back(std::vector<size_t>{0,2,4});
trs_C.emplace_back(std::vector<size_t>{3,0,4});
trs_C.emplace_back(std::vector<size_t>{3,4,2});
Mesh C;
PMP::polygon_soup_to_polygon_mesh(pts_C, trs_C, C);
PMP::bounded_error_Hausdorff_distance<CGAL::Sequential_tag>(A, C, bound);
PMP::bounded_error_Hausdorff_distance<CGAL::Sequential_tag>(C, A, bound);
return EXIT_SUCCESS;
}