GNU Octave - Bugs: bug #55493, Orientation of automatically...

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bug #55493: Orientation of automatically calculated normals differ from Matlab

Submitter:	Markus Mützel <mmuetzel>
Submitted:	Wed 16 Jan 2019 07:40:04 PM UTC


Category:	Plotting	Severity:	3 - Normal
Priority:	5 - Normal	Item Group:	None
Status:	None	Assigned to:	None
Originator Name:		Open/Closed: *	Open
Release: *	dev	Operating System: *	Any
Fixed Release:	None	Planned Release:	None

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Wed 16 Jan 2019 07:40:04 PM UTC, original submission:

Running "demo isonormal 1" in Octave and in Matlab (see bug #55481), the direction of the automatically calculated normals is different in Matlab and in Octave.
While in Matlab all normals seem to point towards the center (the origin or the barycenter of the patch?), they point in different directions in Octave (determined by the order of the vertices in each face).
This is not a bug in isonormal but in the algorithm that is used to automatically calculate the normals.

Markus Mützel <mmuetzel>

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GNU Octave - Bugs: bug #55493, Orientation of automatically...

bug #55493: Orientation of automatically calculated normals differ from Matlab

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