CGAL users discussion list

["Thomas Zangl - Home" <>]

Dear List!

I am able to create a Polyhedron_3 out of a bunch of triangles
(Point_3) and their combinatorical information (indices of the
vertices which form a triangle).

I now want to create a Polyhedron_3 which uses both types of
information: the vertices (as coordinates) and their combinatorical
relation. The incremental_builder was able to insert triangles together
with the combinatorical information into a polyhedron_3 but without I
am lost :-)

So, whats the proper way to create a polyhedron_3 and to avoid the
duplication of vertices? I insert triangles currently this way:

poly_.make_triangle(p1, p2, p3) // pX is a Point3

Here's the combinatorical information lost and duplicated vertices
created ... :-/ 

(I now have 6 faces and 18 vertices resulting in a non-closed
polyhedron. I know that the 6 faces are forming a closed polyhedron but
because of the duplicated vertices this is prevented.)

TIA!

Best regards,
-- 
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,yours Thomas Zangl, Bakk.rer.soc.oec. - 

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- Freelancer - IT Consulting & Software Development -
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