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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 Cobbs1110March 11, 2013 10:38PM
Re: T-Junctions re-visited Tim Gould585March 11, 2013 11:31PM
Re: T-Junctions re-visited Roland Melkert488March 12, 2013 11:17AM
Re: T-Junctions re-visited Ben Supnik523March 12, 2013 11:17AM
Re: T-Junctions re-visited Roland Melkert498March 12, 2013 11:22AM
Re: T-Junctions re-visited Ben Supnik480March 12, 2013 11:32AM
Re: T-Junctions re-visited Roland Melkert474March 12, 2013 11:41AM
Re: T-Junctions re-visited Ben Supnik474March 12, 2013 11:55AM
Re: T-Junctions re-visited Roland Melkert483March 13, 2013 10:08AM
Re: T-Junctions re-visited Travis Cobbs504March 13, 2013 11:27AM
Re: T-Junctions re-visited Allen Smith503March 12, 2013 02:01PM
Re: T-Junctions re-visited Michael Heidemann498March 13, 2013 09:27AM
Re: T-Junctions re-visited Ben Supnik475March 13, 2013 10:37AM
Re: T-Junctions re-visited Tim Gould483March 13, 2013 02:31PM
Re: T-Junctions re-visited Michael Heidemann466March 13, 2013 03:42PM
Re: T-Junctions re-visited Michael Heidemann492March 17, 2013 04:35AM
Re: T-Junctions re-visited Ben Supnik431March 17, 2013 08:43AM
Re: T-Junctions re-visited Michael Heidemann438March 17, 2013 08:59AM
Re: T-Junctions re-visited Ben Supnik413March 17, 2013 09:02AM
Re: T-Junctions re-visited Magnus Forsberg448March 17, 2013 09:15AM
Re: T-Junctions re-visited Travis Cobbs508March 17, 2013 10:09PM
Re: T-Junctions re-visited Ben Supnik492March 18, 2013 07:30AM
Re: T-Junctions re-visited Travis Cobbs491March 18, 2013 10:57AM
Re: T-Junctions re-visited Ben Supnik485March 18, 2013 11:27AM
Re: T-Junctions re-visited Travis Cobbs469March 18, 2013 12:23PM
Re: T-Junctions re-visited Ben Supnik562March 18, 2013 01:41PM
Re: T-Junctions re-visited Roland Melkert560March 18, 2013 02:51PM
Re: T-Junctions re-visited Travis Cobbs547March 18, 2013 02:59PM
Re: T-Junctions re-visited Roland Melkert600March 18, 2013 03:41PM
Re: T-Junctions re-visited Ben Supnik602March 18, 2013 06:09PM
Re: T-Junctions re-visited Roland Melkert538March 19, 2013 11:38AM
Re: T-Junctions re-visited Ben Supnik533March 19, 2013 11:43AM
Re: T-Junctions re-visited Roland Melkert567March 19, 2013 07:07PM
Re: T-Junctions re-visited Travis Cobbs561March 19, 2013 10:13PM
Re: T-Junctions re-visited Tim Gould554March 20, 2013 03:56AM
Re: T-Junctions re-visited Travis Cobbs515March 20, 2013 10:13AM
Re: T-Junctions re-visited Ben Supnik523March 20, 2013 10:23AM
Re: T-Junctions re-visited Travis Cobbs560March 20, 2013 10:29AM
Re: T-Junctions re-visited Travis Cobbs507March 20, 2013 10:26AM
Re: T-Junctions re-visited Ben Supnik483March 20, 2013 11:18AM
Re: T-Junctions re-visited Ben Supnik493March 20, 2013 06:42AM
Re: T-Junctions re-visited Roland Melkert482March 20, 2013 11:36AM
Re: T-Junctions re-visited Philippe Hurbain506March 20, 2013 06:36AM
Re: T-Junctions re-visited Ben Supnik515March 20, 2013 06:58AM
Re: T-Junctions re-visited Allen Smith576March 20, 2013 09:08AM
Re: T-Junctions re-visited Roland Melkert647March 20, 2013 11:35AM
Re: T-Junctions re-visited Ben Supnik1057March 20, 2013 11:50AM
Re: T-Junctions re-visited Michael Heidemann561March 18, 2013 03:54PM
Re: T-Junctions re-visited Roland Melkert478March 13, 2013 10:03AM
Re: T-Junctions re-visited Tim Gould439March 13, 2013 03:56PM
Re: T-Junctions re-visited Sergio Reano433March 13, 2013 03:51PM
Re: T-Junctions re-visited Roland Melkert514March 13, 2013 04:36PM
Re: T-Junctions re-visited Tim Gould452March 13, 2013 05:10PM
Re: T-Junctions re-visited Ben Supnik553March 14, 2013 08:17PM
Re: T-Junctions re-visited Tim Gould580March 14, 2013 08:41PM
Re: T-Junctions re-visited Ben Supnik520March 15, 2013 10:56AM
Re: T-Junctions re-visited Roland Melkert494March 15, 2013 11:36AM
Re: T-Junctions re-visited Ben Supnik417March 13, 2013 06:58PM
Re: T-Junctions re-visited Roland Melkert434March 13, 2013 07:27PM
Re: T-Junctions re-visited Ben Supnik419March 13, 2013 07:37PM
Re: T-Junctions re-visited Roland Melkert490March 13, 2013 07:59PM
Re: T-Junctions re-visited Ben Supnik493March 13, 2013 08:18PM
Re: T-Junctions re-visited Travis Cobbs588March 14, 2013 03:23PM
Re: T-Junctions re-visited Roland Melkert592March 14, 2013 03:34PM
Re: T-Junctions re-visited Tim Gould567March 14, 2013 03:41PM
Re: T-Junctions re-visited Roland Melkert538March 15, 2013 11:33AM
Re: T-Junctions re-visited Tim Gould469March 13, 2013 07:43PM
Re: T-Junctions re-visited Roland Melkert483March 13, 2013 08:08PM
Re: T-Junctions re-visited Tim Gould505March 13, 2013 08:18PM
Re: T-Junctions re-visited Ben Supnik586March 14, 2013 08:15PM
Re: T-Junctions re-visited Roland Melkert558March 15, 2013 11:29AM
Re: T-Junctions re-visited Travis Cobbs505March 15, 2013 12:27PM
Re: T-Junctions re-visited Ben Supnik496March 15, 2013 05:08PM
Re: T-Junctions re-visited Travis Cobbs519March 16, 2013 11:29PM
Re: T-Junctions re-visited Ben Supnik443March 17, 2013 08:58AM
Re: T-Junctions re-visited Roland Melkert425March 17, 2013 12:35PM
Re: T-Junctions re-visited Travis Cobbs459March 18, 2013 12:28PM
Re: T-Junctions re-visited Travis Cobbs581March 18, 2013 12:32PM
Re: T-Junctions re-visited Roland Melkert527March 18, 2013 05:00PM
Re: T-Junctions re-visited Travis Cobbs571March 18, 2013 11:05PM
Re: T-Junctions re-visited Roland Melkert630March 19, 2013 11:38AM
Re: T-Junctions re-visited Sergio Reano554March 26, 2013 02:46PM
Re: T-Junctions re-visited Roland Melkert468March 27, 2013 11:19AM
Re: T-Junctions re-visited Sergio Reano569March 27, 2013 01:48PM



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