[Octave-bug-tracker] [bug #38779] patch failure with quadrilateral face

[Rik]

Update of bug #38779 (project octave):

                  Status:                    None => Postponed              

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Follow-up Comment #1:

This bug is confirmed.  It is very sensitive to the actual values of the pts. 
For example, changing x(1,1) by .0001 is enough to force the correct
interpretation.

I don't have time to look into this, but for anyone who is interested you
probably want to start with the function draw_patch in
libinterp/interp-core/gl-render.cc.  It appears to be a renderer bug rather
than a bug in graphics.cc since the data on faces and X,Y,Z points is stored
correctly.

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