Florian Brucker wrote:
> 
> Nevertheless it's annoying that a degenerate cylinder causes a parse 
> time error and not a warning. Degenerate triangles, spheres and boxes do 
> not trigger errors (in fact they're not even triggering warnings), 
> whereas an empty mesh throws an error, too. Is that really necessary? 
> What's the problem with ignoring those objects at parse time?

In contrast to a sphere with radius 0 a degenerate cylinder is not 
simply invisible - it is not well defined how it should look like.  Also 
note triangles, spheres and boxes are not ignored - triangles in a mesh 
are but this is something different.

Christoph

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