[Octave-bug-tracker] [bug #47677] non-planar patches are not supported in Octave

[Markus Mützel]

Follow-up Comment #4, bug #47677 (project octave):

Attached is a patch that finds planar subsets for non-planar faces.
When using OpenGL, these subsets are drawn separately.

There are different approaches for separating non-planar polygons into planar
subsets. The approach taken in this patch is the following:
1- Find the largest sequence starting from edge(1) that gives a planar
polygon.
2- Including edge(1), find the largest sequence starting from the last edge of
the prior polygon that gives a planar polygon.
3- Repeat from 2 until the face is complete.

I also attached a script for testing with some exemplary non-planar polygons.

(file #37672, file #37673)
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Additional Item Attachment:

File name: patch_with_nonplanar_faces.patch Size:9 KB
File name: test_nonplanar_patches.m       Size:1 KB


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