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["hossan.nazmul" <>]

Hello Sebastien,
Thanks a lot for your reply. I played a little and now is able to store my
points into the CGAL::Surface_mesh<Point_3>. I have Linear Rings which are
the faces of the Polyhedron/Surface mesh (I presume). If I use
CGAL::Surface_mesh the I have two possibility to insert those points to
faces. e.g.

        vertex_descriptor u = mesh.add_vertex(Kernel::Point_3(0, 0, 0));
        vertex_descriptor v = mesh.add_vertex(Kernel::Point_3(1, 0, 0));
        vertex_descriptor w = mesh.add_vertex(Kernel::Point_3(1, 1, 0));
        vertex_descriptor x = mesh.add_vertex(Kernel::Point_3(0, 1, 0));
        vertex_descriptor z = mesh.add_vertex(Kernel::Point_3(0.5, 0.5, 0));
        
        face_descriptor face2 =mesh.add_face(v, w, z);
        face_descriptor face2 =mesh.add_face(x, z, w);
        face_descriptor face3 =mesh.add_face(x, u, z); 
        //or (I use this like following)
        vertex_range range=mesh.vertices();
        face_descriptor face=mesh.add_face(range);
This operation adds all of the vertices into one face which is not the case.
I would like to add each linear ring into one face (or polygon). I have 7
Linear rings and I like to insert them into 7 faces.  (see the attached .gml
file).  test_data_set_1.gml
<http://cgal-discuss.949826.n4.nabble.com/file/n4662635/test_data_set_1.gml>  
 

how can I do it with Surface_Mesh/Polyhedron? Thanks in advance. 





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