CGAL users discussion list

[Ben Supnik <>]

What kernel are you templated against?

On 10/7/11 3:47 PM, Asher Kamiraze wrote:
> Hi all,
>
> I am facing a problem with a piece which used to work but which now crashes.
> Here is the method a segmentation fault:
>
> void  myobject::build_arr(const  string&  path,  double  tolerance)
>
> {
>
>      /// Here, we read the polygons from a file -->  m_rectangles
>
>
>      vector<Polygon_2>::const_iterator  itb  =  m_rectangles.begin(),  ite  = 
>  m_rectangles.end();
>
>      for(;itb!=ite;++itb)
>
>      {
>
>          Polygon_2::Edge_const_iterator  e  =  itb->edges_begin(),  ite_edges  = 
>  itb->edges_end();
>
>          for(;e!=ite_edges;++e)
>
>          {
>
>              Vector_2  v  =  e->to_vector();
>
>              double  d  =  sqrt(CGAL::to_double(v.squared_length()));
>
>              v  =  (tolerance  /  d)  *  v  ;
>
>              std::cout  <<  v  <<  std::endl;
>
>              std::cout  <<  Segment_2(e->source()-v,  e->target()+v)  <<  
> std::endl;
>
>              CGAL::insert(m_arr,  Segment_2(e->source()-v,  e->target()+v)); 
> /// Whatever the dataset is, the second call to CGAL::insert causes a segmentation 
> fault
>
>          }
>
>      }
>
> }
>
>
> Here is the output on the console with one of my dataset:
>
> 45.5953 20.5199
>
> 387.269 239.624 506.547 293.304
>
> -20.5199 45.5953
>
> 481.472 227.189 407.029 392.6
>
>
> There is no duplicate point. I am on a linux ubuntu 11.04, g++ 4.5.2 and
> CGAL 3.7 (I compiled it myself).
> The same code used to work on the same machine, with an ubuntu 10.04
> (cannot remember g++ version ...), and CGAL 3.7 also compiled by myself.
>
> Do you have any idea on what the problem is?
>
> Regards,
>
> Asher

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