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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 Cobbs646March 11, 2013 10:38PM
Re: T-Junctions re-visited Tim Gould301March 11, 2013 11:31PM
Re: T-Junctions re-visited Roland Melkert279March 12, 2013 11:17AM
Re: T-Junctions re-visited Ben Supnik286March 12, 2013 11:17AM
Re: T-Junctions re-visited Roland Melkert260March 12, 2013 11:22AM
Re: T-Junctions re-visited Ben Supnik273March 12, 2013 11:32AM
Re: T-Junctions re-visited Roland Melkert261March 12, 2013 11:41AM
Re: T-Junctions re-visited Ben Supnik273March 12, 2013 11:55AM
Re: T-Junctions re-visited Roland Melkert266March 13, 2013 10:08AM
Re: T-Junctions re-visited Travis Cobbs288March 13, 2013 11:27AM
Re: T-Junctions re-visited Allen Smith310March 12, 2013 02:01PM
Re: T-Junctions re-visited Michael Heidemann275March 13, 2013 09:27AM
Re: T-Junctions re-visited Ben Supnik270March 13, 2013 10:37AM
Re: T-Junctions re-visited Tim Gould258March 13, 2013 02:31PM
Re: T-Junctions re-visited Michael Heidemann261March 13, 2013 03:42PM
Re: T-Junctions re-visited Michael Heidemann258March 17, 2013 04:35AM
Re: T-Junctions re-visited Ben Supnik239March 17, 2013 08:43AM
Re: T-Junctions re-visited Michael Heidemann237March 17, 2013 08:59AM
Re: T-Junctions re-visited Ben Supnik247March 17, 2013 09:02AM
Re: T-Junctions re-visited Magnus Forsberg238March 17, 2013 09:15AM
Re: T-Junctions re-visited Travis Cobbs310March 17, 2013 10:09PM
Re: T-Junctions re-visited Ben Supnik266March 18, 2013 07:30AM
Re: T-Junctions re-visited Travis Cobbs277March 18, 2013 10:57AM
Re: T-Junctions re-visited Ben Supnik285March 18, 2013 11:27AM
Re: T-Junctions re-visited Travis Cobbs267March 18, 2013 12:23PM
Re: T-Junctions re-visited Ben Supnik288March 18, 2013 01:41PM
Re: T-Junctions re-visited Roland Melkert296March 18, 2013 02:51PM
Re: T-Junctions re-visited Travis Cobbs268March 18, 2013 02:59PM
Re: T-Junctions re-visited Roland Melkert294March 18, 2013 03:41PM
Re: T-Junctions re-visited Ben Supnik281March 18, 2013 06:09PM
Re: T-Junctions re-visited Roland Melkert287March 19, 2013 11:38AM
Re: T-Junctions re-visited Ben Supnik309March 19, 2013 11:43AM
Re: T-Junctions re-visited Roland Melkert322March 19, 2013 07:07PM
Re: T-Junctions re-visited Travis Cobbs292March 19, 2013 10:13PM
Re: T-Junctions re-visited Tim Gould279March 20, 2013 03:56AM
Re: T-Junctions re-visited Travis Cobbs267March 20, 2013 10:13AM
Re: T-Junctions re-visited Ben Supnik254March 20, 2013 10:23AM
Re: T-Junctions re-visited Travis Cobbs268March 20, 2013 10:29AM
Re: T-Junctions re-visited Travis Cobbs272March 20, 2013 10:26AM
Re: T-Junctions re-visited Ben Supnik248March 20, 2013 11:18AM
Re: T-Junctions re-visited Ben Supnik267March 20, 2013 06:42AM
Re: T-Junctions re-visited Roland Melkert259March 20, 2013 11:36AM
Re: T-Junctions re-visited Philippe Hurbain262March 20, 2013 06:36AM
Re: T-Junctions re-visited Ben Supnik273March 20, 2013 06:58AM
Re: T-Junctions re-visited Allen Smith278March 20, 2013 09:08AM
Re: T-Junctions re-visited Roland Melkert288March 20, 2013 11:35AM
Re: T-Junctions re-visited Ben Supnik672March 20, 2013 11:50AM
Re: T-Junctions re-visited Michael Heidemann284March 18, 2013 03:54PM
Re: T-Junctions re-visited Roland Melkert261March 13, 2013 10:03AM
Re: T-Junctions re-visited Tim Gould243March 13, 2013 03:56PM
Re: T-Junctions re-visited Sergio Reano249March 13, 2013 03:51PM
Re: T-Junctions re-visited Roland Melkert309March 13, 2013 04:36PM
Re: T-Junctions re-visited Tim Gould273March 13, 2013 05:10PM
Re: T-Junctions re-visited Ben Supnik254March 14, 2013 08:17PM
Re: T-Junctions re-visited Tim Gould327March 14, 2013 08:41PM
Re: T-Junctions re-visited Ben Supnik319March 15, 2013 10:56AM
Re: T-Junctions re-visited Roland Melkert270March 15, 2013 11:36AM
Re: T-Junctions re-visited Ben Supnik240March 13, 2013 06:58PM
Re: T-Junctions re-visited Roland Melkert257March 13, 2013 07:27PM
Re: T-Junctions re-visited Ben Supnik239March 13, 2013 07:37PM
Re: T-Junctions re-visited Roland Melkert254March 13, 2013 07:59PM
Re: T-Junctions re-visited Ben Supnik276March 13, 2013 08:18PM
Re: T-Junctions re-visited Travis Cobbs300March 14, 2013 03:23PM
Re: T-Junctions re-visited Roland Melkert309March 14, 2013 03:34PM
Re: T-Junctions re-visited Tim Gould322March 14, 2013 03:41PM
Re: T-Junctions re-visited Roland Melkert290March 15, 2013 11:33AM
Re: T-Junctions re-visited Tim Gould251March 13, 2013 07:43PM
Re: T-Junctions re-visited Roland Melkert250March 13, 2013 08:08PM
Re: T-Junctions re-visited Tim Gould251March 13, 2013 08:18PM
Re: T-Junctions re-visited Ben Supnik316March 14, 2013 08:15PM
Re: T-Junctions re-visited Roland Melkert310March 15, 2013 11:29AM
Re: T-Junctions re-visited Travis Cobbs279March 15, 2013 12:27PM
Re: T-Junctions re-visited Ben Supnik293March 15, 2013 05:08PM
Re: T-Junctions re-visited Travis Cobbs278March 16, 2013 11:29PM
Re: T-Junctions re-visited Ben Supnik236March 17, 2013 08:58AM
Re: T-Junctions re-visited Roland Melkert239March 17, 2013 12:35PM
Re: T-Junctions re-visited Travis Cobbs264March 18, 2013 12:28PM
Re: T-Junctions re-visited Travis Cobbs284March 18, 2013 12:32PM
Re: T-Junctions re-visited Roland Melkert276March 18, 2013 05:00PM
Re: T-Junctions re-visited Travis Cobbs308March 18, 2013 11:05PM
Re: T-Junctions re-visited Roland Melkert331March 19, 2013 11:38AM
Re: T-Junctions re-visited Sergio Reano316March 26, 2013 02:46PM
Re: T-Junctions re-visited Roland Melkert267March 27, 2013 11:19AM
Re: T-Junctions re-visited Sergio Reano317March 27, 2013 01:48PM



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