CGAL users discussion list

["Wang, Kai" <>]

Hi all,

It seems that there exists a bug in the file subdivision_mask_3.h, in
class Linear_mask_3, method void border_node(Halfedge_handle edge,
Point& ept, Point& vpt) (from line 109).

This method does not modify the value of the variable vpt, which is
passed by reference. Meanwhile, when calling this method from the file
Subdivision_method_impl_3.h using mask.border_node(eitr,
edge_point_buffer[i], vertex_point_buffer[v]) at lines 107 and 226,
the elements in vertex_point_buffer seem not having been initialized
as the initial vertex point values in the current mesh. So, when I
used this linear mask, I could have meaningless subdivision results
(e.g. infinite values) on borders.

Should the method void border_node(?) in subdivision_mask_3.h be
something like the following?
void border_node(Halfedge_handle edge, Point& ept, Point& vpt){
edge_node(edge, ept);

Point vp0 = edge->vertex()->point();
vpt = Point(vp0[0], vp0[1], vp0[2]);
   }

Best regards,

Kai
2009.04.17