bugGNU Octave - Bugs: bug #55014, Property VertexNormals not updated...


bug #55014: Property VertexNormals not updated when Vertices are

Submitted by:  Guillaume <gyom>
Submitted on:  Mon 12 Nov 2018 01:44:36 PM UTC  
Category:  Plotting with OpenGL Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Incorrect Result
Status:  Fixed Assigned to:  None
Originator Name:  Guillaume Open/Closed:  Closed
Release:  dev Operating System:  Any

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Mon 19 Nov 2018 12:29:54 PM UTC, comment #4:

Thanks for testing.

Closing as fixed.

Markus Mützel <mmuetzel>
Project Member
Mon 19 Nov 2018 10:28:30 AM UTC, comment #3:

Thank you Markus, it works perfectly now!

Guillaume <gyom>
Fri 16 Nov 2018 07:11:44 PM UTC, comment #2:

I pushed a patch here that fixes the issue for me:

The results for the example script with that changeset:

Marking as ready for test.

Markus Mützel <mmuetzel>
Project Member
Tue 13 Nov 2018 12:14:34 AM UTC, comment #1:

I'm really sure this is just because there isn't a listener on the Vertices property which fires when the Vertices are changed and calls the function to update the VertexNormals.

This can be mimicked with addlistener(), but it probably should be coded in C++. For example, if you update xdata on a patch, the Face and Vertices properties are automatically changed.

Rik <rik5>
Project Administrator
Mon 12 Nov 2018 01:44:36 PM UTC, original submission:

If you download the Stanford Bunny mesh and run the following:

Matlab displays:

while Octave displays the same initial values:

Guillaume <gyom>


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    Follow 4 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2018-11-19 mmuetzel StatusReady For Test => Fixed
        Open/ClosedOpen => Closed
    2018-11-16 mmuetzel StatusConfirmed => Ready For Test
    2018-11-13 rik5 StatusNone => Confirmed

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