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

[Markus Mützel]

Follow-up Comment #2, bug #47677 (project octave):

Rik:
Please, find the resulting figure from the example in comment #0 in
"non-plane_patch.pdf". To better visualize the "elbow" in the patch surface,
"non-plane_patch+line.pdf" was saved after executing this additional line
(from vertices(1,:) to vertices(3,:) ):

line ([0 0], [1 0], [0 0], 'Color', 'w', 'LineStyle', ':')


The triangle that is produced by Octave 4.0.1 with the same example from
comment #0 is none of the two parts of that surface but lies on the "space
diagonal" surface given by [1, 1, 0; 0, 0, 0; 0, 0, 1] ( = vertices(2:4,:) ),
see "non-plane_patch_Octave.pdf" for Octave's result from a similar
perspective.

I do not know where the thin, white, dashed and dotted lines come from in the
latter pdf. I cannot see them in the original figure on the screen before and
after saving to pdf. Maybe that is a different bug or they might even give a
hint on what is going wrong...

(file #36932, file #36933, file #36934)
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Additional Item Attachment:

File name: non-plane_patch.pdf            Size:3 KB
File name: non-plane_patch+line.pdf       Size:3 KB
File name: non-plane_patch_Octave.pdf     Size:3 KB


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