CGAL users discussion list

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

Le lundi 07 janvier 2013 20:13:36 

 a écrit :
>  Dear Lauren Rineau:
>      Insert segments one by one can only be used for simple geometry, if i
> treate with a complex region, like the one on the CGAL manual page
> http://www.cgal.org/Manual/latest/doc_html/cgal_manual/Mesh_2/delaunaymesh-
teaser.png
> , how to input the boundary into cgal.
> regards

Even that complex geometry is a collection of segments. You just have to loop 
on all segments in the polygon, and insert them one by one in the constrained 
Delaunay triangulation (CDT). The precise code that does that depends on how 
you input polygons are represented, or if they are loaded from a file. For 
example, the function 'loadEdgConstraints' at line 502 of the file 
CGAL-4.1/demo/Triangulation_2/Constrained_Delaunay_triangulation_2.cpp inputs 
a set of segments from a file, and insert them in a CDT.

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