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Archived issue #0000325

Checkshape does not recognize an error in a bad face

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Description

An attached face has incorrect placed edges:

           1
 I<---------------------I
 | 2 ^
 |<---------------------|
4| |5
 | |
 v 3 |
 II-------------------->II

Where is 4 and 5 are pcurves of the seam edge.
The ends of edges 1 and 2 share the same vertex I.
Here we have one of edges 1 or 2 being redundant but
checkshape says that the shape is valid.

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