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我需要使用支持颜色的 CGAL 库来实现 3D 孔填充。

如果不修改 CGAL 库，是否有可能做到这一点？我需要用孔边缘的平均颜色填充孔。

问候，阿里

....

int main(int argc, char* argv[])
{
  const char* filename = (argc > 1) ? argv[1] : "data/mech-holes-shark.off";


  Mesh mesh;
  OpenMesh::IO::read_mesh(mesh, filename);

  // Incrementally fill the holes
  unsigned int nb_holes = 0;
  BOOST_FOREACH(halfedge_descriptor h, halfedges(mesh))
  {
    if(CGAL::is_border(h,mesh))
    {
      std::vector<face_descriptor>  patch_facets;
      std::vector<vertex_descriptor> patch_vertices;
      bool success = CGAL::cpp11::get<0>(
        CGAL::Polygon_mesh_processing::triangulate_refine_and_fair_hole(
                  mesh,
                  h,
                  std::back_inserter(patch_facets),
                  std::back_inserter(patch_vertices),
     CGAL::Polygon_mesh_processing::parameters::vertex_point_map(get(CGAL::vertex_point, mesh)).
                  geom_traits(Kernel())) );

      CGAL_assertion(CGAL::is_valid_polygon_mesh(mesh));

      std::cout << "* FILL HOLE NUMBER " << ++nb_holes << std::endl;
      std::cout << "  Number of facets in constructed patch: " << patch_facets.size() << std::endl;
      std::cout << "  Number of vertices in constructed patch: " << patch_vertices.size() << std::endl;
      std::cout << "  Is fairing successful: " << success << std::endl;
    }
  }

  CGAL_assertion(CGAL::is_valid_polygon_mesh(mesh));

    OpenMesh::IO::write_mesh(mesh, "filled_OM.off");
  return 0;
}
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1 回答 1

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如果将 CGAL::Surface_mesh 用作 Mesh，则可以使用动态属性映射来定义单纯形的属性，例如可以定义每个面的颜色。对此的“标准”语法是

mesh.add_property_map<face_descriptor, CGAL::Color >("f:color")

我认为。Surface_mesh 的文档中有示例。

于 2018-09-05T07:34:51.533 回答