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[gupta61 <>]

Hi,

I was wondering if it is possible to have a surface defined by Polyhedron_3
with different/opposite normal orientation of facets?

All facets of my surface are triangles. My understanding is that the normals
of all the triangles/facets should point in the same direction. And if this
condition is violated, I should get an error. Am I missing something here?

Piyush 



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Piyush Gupta
UIUC
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