CGAL users discussion list

["Sebastien Loriot (GeometryFactory)" <>]

Could you provide a full example reproducing the issue?

Thanks,

Sebastien.

On 09/02/2016 07:24 PM, Sukhraj Singh wrote:
> Hello,
>
> I am trying to create a particular segment (which is the output of
> surface mesh segmentation) as ROI in Surface Mesh Deformation.
>
> I implemented following code, which is crashing( psb comment below)
>
> ==========================================================
>
> void  set_all_vertices_as_roi()
>
>    {
>
>      vertex_iterator  vb,  ve;
>
>      for(boost::tie(vb,  ve)  =  vertices(*polyhedron());  vb  !=  ve;  ++vb)
>
>      {
>
>        insert_roi_vertex(*vb);
>
>      }
>
>    }
>
>
>
> //Implement it likewise all mesh vertices as roi
>
>
>    void  set_segment_vertices_as_roi(Polyhedron  mesh)
>
>    {
>
>      std::size_t  number_of_clusters;
>
>      double  smoothing_lambda  ;
>
>
>      //  create  a  property-map  for  segment-ids
>
>      typedef  std::map<Polyhedron::Facet_const_handle,  std::size_t>  
> Facet_int_map;
>
>      Facet_int_map  internal_segment_map;
>
>      boost::associative_property_map<Facet_int_map>  
> segment_property_map(internal_segment_map);
>
>
> //Run the sdf segmentation algo
>
>      int  nb_segments  =  
> SegmentPolyhedron(segment_property_map,number_of_clusters,  smoothing_lambda  
> ,mesh);
>
>
>      std::vector  <Polyhedron>  PolySegments;
>
>      PolySegments.resize(nb_segments);
>
>
> //Get the segement of the mesh
>
>      GetSegments(mesh,segment_property_map,nb_segments,PolySegments,0);
>
>
>
>      vertex_iterator  vb,  ve;
>
>
>
> //Make zeroth segment as ROI
>
>      for(boost::tie(vb,  ve)  =  vertices(PolySegments[0]);  vb  !=  ve;  
> ++vb)
>
>      {
>
>        //std::cout  <<  __LINE__  <<  std::endl;
>
>          insert_roi_vertex(*vb); // GIVES CRASH
>
>      }
>
>
>
>
>
>    }
>
>
>
> ===============================================================================
>
>
> Perhaps it is because of size of deform_mesh, which was  equal to
> complete non-segmented mesh size. ?
>
> There is k-ring selection as well, which is used when picked by mouse.
>
> Can someone suggest me some other way maybe, so that I could make the
> mesh segment as ROI
>
>
> Thanks to provide input.
>
>
> --
> Sukhraj Singh