CGAL users discussion list

["Laurent Rineau (CGAL/GeometryFactory)" <>]

Le Wednesday 30 April 2014 12:21:19 Benjamin Kehlet a écrit :
> That worked very well! Now, however, I get this one when trying to
> mesh file "handle.off" in the same directory.
> 
> terminate called after throwing an instance of
> 'CGAL::Precondition_exception' what():  CGAL ERROR: precondition violation!
> Expr: dimension() >= 2
> File:
> /home/benjamik/software/cgal-4.4-install/include/CGAL/Regular_triangulation
> _3.h Line: 373
> Aborted (core dumped)
> 
> Just replace the filename and change the variable "cs" (just before
> the mesh criteria is set) to 0.075 to reproduce.

Here is another patch.


--- a/include/CGAL/Mesh_3/Protect_edges_sizing_field.h
+++ b/include/CGAL/Mesh_3/Protect_edges_sizing_field.h
@@ -1197,7 +1197,8 @@ change_ball_size(const Vertex_handle& v, const FT size, 
const bool special_ball)
   CGAL_assertion_code(Tr& tr = c3t3_.triangulation());
   CGAL_assertion_code(Cell_handle ch = tr.locate(p));
   CGAL_assertion_code(std::vector<Vertex_handle> hidden_vertices);
-  CGAL_assertion_code(tr.vertices_inside_conflict_zone(Weighted_point(p, w),
+  CGAL_assertion_code(if(tr.dimension() > 1)
+                      tr.vertices_inside_conflict_zone(Weighted_point(p, w),
                                                        ch,
                                                        
std::back_inserter(hidden_vertices)));



I do not understand why that bug never occurred before. Probably the 
assertion was added recently (CGAL-4.3, again), and that was not tested 
enough. I am sorry for that situation.

-- 
Laurent Rineau, PhD
R&D Engineer at GeometryFactory           http://www.geometryfactory.com/
Release Manager of the CGAL Project       http://www.cgal.org/