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Re: T-Junctions re-visited
avatarMarch 18, 2013 12:28PM
Quote
Ben Supnik
Yep - this is exactly what I saw when I had triangulation on. But I think in theory a weighting by arc-angle could fix this. Two of the three triangles at a given vertex will share 90 degrees of "span" and the other will have 90 to itself - by this weighting, normals will go back to vertical. I don't know what the effect would be on other shapes.

When implementing LDView's smoothing, I actually considered using the un-normalized cross product as the input to the average calculation. Since the magnitude of the cross product is proportional to the area of the triangle, I think this would result in correct surface normals in the case of a cylinder. However, in order for it to work, quads would in fact have to be split into triangles, and my smoothing code acts on the quads.
SubjectAuthorViewsPosted
T-Junctions re-visited Travis Cobbs741March 11, 2013 10:38PM
Re: T-Junctions re-visited Tim Gould364March 11, 2013 11:31PM
Re: T-Junctions re-visited Roland Melkert342March 12, 2013 11:17AM
Re: T-Junctions re-visited Ben Supnik360March 12, 2013 11:17AM
Re: T-Junctions re-visited Roland Melkert338March 12, 2013 11:22AM
Re: T-Junctions re-visited Ben Supnik331March 12, 2013 11:32AM
Re: T-Junctions re-visited Roland Melkert317March 12, 2013 11:41AM
Re: T-Junctions re-visited Ben Supnik330March 12, 2013 11:55AM
Re: T-Junctions re-visited Roland Melkert324March 13, 2013 10:08AM
Re: T-Junctions re-visited Travis Cobbs352March 13, 2013 11:27AM
Re: T-Junctions re-visited Allen Smith352March 12, 2013 02:01PM
Re: T-Junctions re-visited Michael Heidemann338March 13, 2013 09:27AM
Re: T-Junctions re-visited Ben Supnik323March 13, 2013 10:37AM
Re: T-Junctions re-visited Tim Gould329March 13, 2013 02:31PM
Re: T-Junctions re-visited Michael Heidemann315March 13, 2013 03:42PM
Re: T-Junctions re-visited Michael Heidemann348March 17, 2013 04:35AM
Re: T-Junctions re-visited Ben Supnik287March 17, 2013 08:43AM
Re: T-Junctions re-visited Michael Heidemann282March 17, 2013 08:59AM
Re: T-Junctions re-visited Ben Supnik281March 17, 2013 09:02AM
Re: T-Junctions re-visited Magnus Forsberg308March 17, 2013 09:15AM
Re: T-Junctions re-visited Travis Cobbs355March 17, 2013 10:09PM
Re: T-Junctions re-visited Ben Supnik322March 18, 2013 07:30AM
Re: T-Junctions re-visited Travis Cobbs317March 18, 2013 10:57AM
Re: T-Junctions re-visited Ben Supnik325March 18, 2013 11:27AM
Re: T-Junctions re-visited Travis Cobbs316March 18, 2013 12:23PM
Re: T-Junctions re-visited Ben Supnik340March 18, 2013 01:41PM
Re: T-Junctions re-visited Roland Melkert358March 18, 2013 02:51PM
Re: T-Junctions re-visited Travis Cobbs335March 18, 2013 02:59PM
Re: T-Junctions re-visited Roland Melkert406March 18, 2013 03:41PM
Re: T-Junctions re-visited Ben Supnik373March 18, 2013 06:09PM
Re: T-Junctions re-visited Roland Melkert328March 19, 2013 11:38AM
Re: T-Junctions re-visited Ben Supnik345March 19, 2013 11:43AM
Re: T-Junctions re-visited Roland Melkert371March 19, 2013 07:07PM
Re: T-Junctions re-visited Travis Cobbs342March 19, 2013 10:13PM
Re: T-Junctions re-visited Tim Gould335March 20, 2013 03:56AM
Re: T-Junctions re-visited Travis Cobbs314March 20, 2013 10:13AM
Re: T-Junctions re-visited Ben Supnik304March 20, 2013 10:23AM
Re: T-Junctions re-visited Travis Cobbs338March 20, 2013 10:29AM
Re: T-Junctions re-visited Travis Cobbs319March 20, 2013 10:26AM
Re: T-Junctions re-visited Ben Supnik296March 20, 2013 11:18AM
Re: T-Junctions re-visited Ben Supnik329March 20, 2013 06:42AM
Re: T-Junctions re-visited Roland Melkert300March 20, 2013 11:36AM
Re: T-Junctions re-visited Philippe Hurbain331March 20, 2013 06:36AM
Re: T-Junctions re-visited Ben Supnik383March 20, 2013 06:58AM
Re: T-Junctions re-visited Allen Smith355March 20, 2013 09:08AM
Re: T-Junctions re-visited Roland Melkert383March 20, 2013 11:35AM
Re: T-Junctions re-visited Ben Supnik777March 20, 2013 11:50AM
Re: T-Junctions re-visited Michael Heidemann362March 18, 2013 03:54PM
Re: T-Junctions re-visited Roland Melkert328March 13, 2013 10:03AM
Re: T-Junctions re-visited Tim Gould294March 13, 2013 03:56PM
Re: T-Junctions re-visited Sergio Reano285March 13, 2013 03:51PM
Re: T-Junctions re-visited Roland Melkert364March 13, 2013 04:36PM
Re: T-Junctions re-visited Tim Gould313March 13, 2013 05:10PM
Re: T-Junctions re-visited Ben Supnik340March 14, 2013 08:17PM
Re: T-Junctions re-visited Tim Gould377March 14, 2013 08:41PM
Re: T-Junctions re-visited Ben Supnik374March 15, 2013 10:56AM
Re: T-Junctions re-visited Roland Melkert320March 15, 2013 11:36AM
Re: T-Junctions re-visited Ben Supnik284March 13, 2013 06:58PM
Re: T-Junctions re-visited Roland Melkert291March 13, 2013 07:27PM
Re: T-Junctions re-visited Ben Supnik286March 13, 2013 07:37PM
Re: T-Junctions re-visited Roland Melkert307March 13, 2013 07:59PM
Re: T-Junctions re-visited Ben Supnik317March 13, 2013 08:18PM
Re: T-Junctions re-visited Travis Cobbs380March 14, 2013 03:23PM
Re: T-Junctions re-visited Roland Melkert382March 14, 2013 03:34PM
Re: T-Junctions re-visited Tim Gould366March 14, 2013 03:41PM
Re: T-Junctions re-visited Roland Melkert370March 15, 2013 11:33AM
Re: T-Junctions re-visited Tim Gould331March 13, 2013 07:43PM
Re: T-Junctions re-visited Roland Melkert291March 13, 2013 08:08PM
Re: T-Junctions re-visited Tim Gould309March 13, 2013 08:18PM
Re: T-Junctions re-visited Ben Supnik378March 14, 2013 08:15PM
Re: T-Junctions re-visited Roland Melkert373March 15, 2013 11:29AM
Re: T-Junctions re-visited Travis Cobbs350March 15, 2013 12:27PM
Re: T-Junctions re-visited Ben Supnik342March 15, 2013 05:08PM
Re: T-Junctions re-visited Travis Cobbs356March 16, 2013 11:29PM
Re: T-Junctions re-visited Ben Supnik273March 17, 2013 08:58AM
Re: T-Junctions re-visited Roland Melkert278March 17, 2013 12:35PM
Re: T-Junctions re-visited Travis Cobbs315March 18, 2013 12:28PM
Re: T-Junctions re-visited Travis Cobbs384March 18, 2013 12:32PM
Re: T-Junctions re-visited Roland Melkert339March 18, 2013 05:00PM
Re: T-Junctions re-visited Travis Cobbs364March 18, 2013 11:05PM
Re: T-Junctions re-visited Roland Melkert408March 19, 2013 11:38AM
Re: T-Junctions re-visited Sergio Reano359March 26, 2013 02:46PM
Re: T-Junctions re-visited Roland Melkert304March 27, 2013 11:19AM
Re: T-Junctions re-visited Sergio Reano386March 27, 2013 01:48PM



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