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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 Cobbs586March 11, 2013 10:38PM
Re: T-Junctions re-visited Tim Gould262March 11, 2013 11:31PM
Re: T-Junctions re-visited Roland Melkert247March 12, 2013 11:17AM
Re: T-Junctions re-visited Ben Supnik250March 12, 2013 11:17AM
Re: T-Junctions re-visited Roland Melkert238March 12, 2013 11:22AM
Re: T-Junctions re-visited Ben Supnik238March 12, 2013 11:32AM
Re: T-Junctions re-visited Roland Melkert230March 12, 2013 11:41AM
Re: T-Junctions re-visited Ben Supnik240March 12, 2013 11:55AM
Re: T-Junctions re-visited Roland Melkert233March 13, 2013 10:08AM
Re: T-Junctions re-visited Travis Cobbs255March 13, 2013 11:27AM
Re: T-Junctions re-visited Allen Smith282March 12, 2013 02:01PM
Re: T-Junctions re-visited Michael Heidemann240March 13, 2013 09:27AM
Re: T-Junctions re-visited Ben Supnik240March 13, 2013 10:37AM
Re: T-Junctions re-visited Tim Gould232March 13, 2013 02:31PM
Re: T-Junctions re-visited Michael Heidemann231March 13, 2013 03:42PM
Re: T-Junctions re-visited Michael Heidemann218March 17, 2013 04:35AM
Re: T-Junctions re-visited Ben Supnik207March 17, 2013 08:43AM
Re: T-Junctions re-visited Michael Heidemann206March 17, 2013 08:59AM
Re: T-Junctions re-visited Ben Supnik217March 17, 2013 09:02AM
Re: T-Junctions re-visited Magnus Forsberg210March 17, 2013 09:15AM
Re: T-Junctions re-visited Travis Cobbs247March 17, 2013 10:09PM
Re: T-Junctions re-visited Ben Supnik233March 18, 2013 07:30AM
Re: T-Junctions re-visited Travis Cobbs247March 18, 2013 10:57AM
Re: T-Junctions re-visited Ben Supnik250March 18, 2013 11:27AM
Re: T-Junctions re-visited Travis Cobbs238March 18, 2013 12:23PM
Re: T-Junctions re-visited Ben Supnik254March 18, 2013 01:41PM
Re: T-Junctions re-visited Roland Melkert260March 18, 2013 02:51PM
Re: T-Junctions re-visited Travis Cobbs231March 18, 2013 02:59PM
Re: T-Junctions re-visited Roland Melkert246March 18, 2013 03:41PM
Re: T-Junctions re-visited Ben Supnik249March 18, 2013 06:09PM
Re: T-Junctions re-visited Roland Melkert246March 19, 2013 11:38AM
Re: T-Junctions re-visited Ben Supnik264March 19, 2013 11:43AM
Re: T-Junctions re-visited Roland Melkert285March 19, 2013 07:07PM
Re: T-Junctions re-visited Travis Cobbs254March 19, 2013 10:13PM
Re: T-Junctions re-visited Tim Gould245March 20, 2013 03:56AM
Re: T-Junctions re-visited Travis Cobbs227March 20, 2013 10:13AM
Re: T-Junctions re-visited Ben Supnik219March 20, 2013 10:23AM
Re: T-Junctions re-visited Travis Cobbs233March 20, 2013 10:29AM
Re: T-Junctions re-visited Travis Cobbs228March 20, 2013 10:26AM
Re: T-Junctions re-visited Ben Supnik213March 20, 2013 11:18AM
Re: T-Junctions re-visited Ben Supnik231March 20, 2013 06:42AM
Re: T-Junctions re-visited Roland Melkert234March 20, 2013 11:36AM
Re: T-Junctions re-visited Philippe Hurbain235March 20, 2013 06:36AM
Re: T-Junctions re-visited Ben Supnik237March 20, 2013 06:58AM
Re: T-Junctions re-visited Allen Smith241March 20, 2013 09:08AM
Re: T-Junctions re-visited Roland Melkert252March 20, 2013 11:35AM
Re: T-Junctions re-visited Ben Supnik623March 20, 2013 11:50AM
Re: T-Junctions re-visited Michael Heidemann252March 18, 2013 03:54PM
Re: T-Junctions re-visited Roland Melkert236March 13, 2013 10:03AM
Re: T-Junctions re-visited Tim Gould212March 13, 2013 03:56PM
Re: T-Junctions re-visited Sergio Reano217March 13, 2013 03:51PM
Re: T-Junctions re-visited Roland Melkert275March 13, 2013 04:36PM
Re: T-Junctions re-visited Tim Gould241March 13, 2013 05:10PM
Re: T-Junctions re-visited Ben Supnik222March 14, 2013 08:17PM
Re: T-Junctions re-visited Tim Gould282March 14, 2013 08:41PM
Re: T-Junctions re-visited Ben Supnik278March 15, 2013 10:56AM
Re: T-Junctions re-visited Roland Melkert236March 15, 2013 11:36AM
Re: T-Junctions re-visited Ben Supnik215March 13, 2013 06:58PM
Re: T-Junctions re-visited Roland Melkert225March 13, 2013 07:27PM
Re: T-Junctions re-visited Ben Supnik202March 13, 2013 07:37PM
Re: T-Junctions re-visited Roland Melkert220March 13, 2013 07:59PM
Re: T-Junctions re-visited Ben Supnik244March 13, 2013 08:18PM
Re: T-Junctions re-visited Travis Cobbs267March 14, 2013 03:23PM
Re: T-Junctions re-visited Roland Melkert274March 14, 2013 03:34PM
Re: T-Junctions re-visited Tim Gould289March 14, 2013 03:41PM
Re: T-Junctions re-visited Roland Melkert248March 15, 2013 11:33AM
Re: T-Junctions re-visited Tim Gould205March 13, 2013 07:43PM
Re: T-Junctions re-visited Roland Melkert219March 13, 2013 08:08PM
Re: T-Junctions re-visited Tim Gould219March 13, 2013 08:18PM
Re: T-Junctions re-visited Ben Supnik282March 14, 2013 08:15PM
Re: T-Junctions re-visited Roland Melkert268March 15, 2013 11:29AM
Re: T-Junctions re-visited Travis Cobbs242March 15, 2013 12:27PM
Re: T-Junctions re-visited Ben Supnik256March 15, 2013 05:08PM
Re: T-Junctions re-visited Travis Cobbs244March 16, 2013 11:29PM
Re: T-Junctions re-visited Ben Supnik205March 17, 2013 08:58AM
Re: T-Junctions re-visited Roland Melkert210March 17, 2013 12:35PM
Re: T-Junctions re-visited Travis Cobbs232March 18, 2013 12:28PM
Re: T-Junctions re-visited Travis Cobbs250March 18, 2013 12:32PM
Re: T-Junctions re-visited Roland Melkert250March 18, 2013 05:00PM
Re: T-Junctions re-visited Travis Cobbs273March 18, 2013 11:05PM
Re: T-Junctions re-visited Roland Melkert293March 19, 2013 11:38AM
Re: T-Junctions re-visited Sergio Reano282March 26, 2013 02:46PM
Re: T-Junctions re-visited Roland Melkert231March 27, 2013 11:19AM
Re: T-Junctions re-visited Sergio Reano285March 27, 2013 01:48PM



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