CGAL users discussion list

[Ophir Setter <>]

It depends on your requirements, Boolean set operation package might also be of help:

http://www.cgal.org/Manual/latest/doc_html/cgal_manual/Boolean_set_operations_2/Chapter_main.html

On Jan 17, 2012 11:53 PM, "Sebastien Loriot (GeometryFactory)" <> wrote:

pgiitu wrote:

Hello

I am doing a project using CGAL and I need to find the union of multiple
polygons.I should be able to get all the faces that arise out from the union
of multiple polygons.

Can any one help me on this as I need it urgently. In CGAL we have functions
to calculate the union of two polygons but I also want the faces.

Then you need to compute the arrangement induced by the polygons, the outer face will describe the union of the polygons.

http://www.cgal.org/Manual/latest/doc_html/cgal_manual/Arrangement_on_surface_2/Chapter_main.html

Sebastien.

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