CGAL users discussion list

[panayiotis foteinos <>]

Hello all.

I have implemented a Delaunay Refinement algorithm on CGAL. All the decisions 
made in the algorithm are deterministic: multiple runs on the same input PSLG 
should produce exactly the same mesh.

I observed, however, that the output mesh is not the same after each run. 
Fortunately, the ouput mesh is the "correct" one after each run (I am sure 
about the correctness of the refined output mesh), but different. For 
example, the meshing of the PSLG for the first time yields 1500 faces, while 
the second time yields 1510.

I am sorry I am asking you this but (after spending a lot of time debugging) 
I 
have to be sure:
        Is this behavior possible or there is a bug in my code? Should I 
expect the             
same answers from CGAL (with the same input) when no exact constructions are 
used?

The number type I am using is double, while the predicates are exact.

Thanks,
Panagiotis