Question

我对CGAL库 Vertex_visibility_graph_2.h 遇到了麻烦，因为可见性图表。我正在尝试的代码如下：

    typedef CGAL::Cartesian<CGAL::Gmpq> Kernel;
    typedef CGAL::Arr_segment_traits_2<Kernel> Traits_2;
    typedef CGAL::Vertex_visibility_graph_2<Traits_2> Vis_graph;  
    typedef CGAL::Polygon_2<Kernel> Polygon_2;

    Vis_graph graph(polygon.vertices_begin(), polygon.vertices_end());

但是当我尝试编译时，我收到错误：

/opt/local/include/CGAL/Partition_2/Vertex_visibility_graph_2_impl.h:528:30: error: 
      no matching function for call to object of type 'Intersect_2' (aka
      'CGAL::Arr_segment_traits_2<CGAL::Cartesian<CGAL::Gmpq>>::Intersect_2')

以前有人用过那个图书馆吗？

Answer 1

您需要替换： typedef CGAL::Vertex_visibility_graph_2<Traits_2> Vis_graph; 通过 typedef CGAL::Vertex_visibility_graph_2<Kernel> Vis_graph;

使用CGAL库Vertex_visibility_graph_2.h进行故障

1 个答案: