CGAL users discussion list

[Andreas Fabri <>]

On 06/06/2011 04:17, Fabio Casado Ruiz wrote:
> Hi everyone, I'm trying to make some comparisons between meshes
> generated using both TetGen as CGAL. Tetgen statistics for generated
> meshes are pretty detailed, but for CGAL (and I must admit that
> because of time issued I'm only using the Mesh_3 demo) there are a
> few statistics I dont comprehend fully. Is there a place where the
> demo, its way of functioning and statistics are explained? I'm
> interested in facet angles (this are the angles of superficial faces
> right?), the dihedral angle (these are showned in the diagram at the
> bottom of the window right?) and the tet. max size (does this size
> refer to tetrahedral volumes?).
>
> Another issue is the aspect (visually) of final meshes. I've
> generated a couple, and when I look at them I can see places where
> the original borders are not included (see example pictures). Is this
> because CGAL doesnt conform to boundaries????

Hi Fabio,

Did you run the demo that comes with CGAL to produce this mesh?
There the sharp edges should appear nicely, as the demo first
detects sharp features and then passes the polyline describing
them to the mesh generation function.

http://www.cgal.org/Manual/latest/doc_html/cgal_manual/Mesh_3/Chapter_main.html#Subsection_49.3.5

andreas

> Please I would appretiate your help a lot . Thanks again, Fabio.