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Re: T-Junctions re-visited
March 20, 2013 10:23AM
Hi Travis,

If you have a multi-map, then the only property you need on keys is that if (a==b) then (a' == b') for key-gen - that is, all equal keys have to encode the same way.

If you are using a non-multi-map then your map is auto-consolidating equal points and you must ensure that if a != b then a' != b'.

In particular, the 'iterative' rounding aglo suggested somewhere else in this now massively-out-of-control thread requires that rounding be done by a series of distance comparisons...any kind of "just round the numbers" algo fails because two nearby points that are just on opposite sides of the 'fall line' will round to different 'snapped' grids.

I had this kind of 'grid' rounding in my first version of smoothing and it can fail pretty badly when key vertices round away from each other and not to each other. I'm poking at iterative rounding this week.

cheers
Ben
SubjectAuthorViewsPosted
T-Junctions re-visited Travis Cobbs759March 11, 2013 10:38PM
Re: T-Junctions re-visited Tim Gould374March 11, 2013 11:31PM
Re: T-Junctions re-visited Roland Melkert355March 12, 2013 11:17AM
Re: T-Junctions re-visited Ben Supnik375March 12, 2013 11:17AM
Re: T-Junctions re-visited Roland Melkert346March 12, 2013 11:22AM
Re: T-Junctions re-visited Ben Supnik335March 12, 2013 11:32AM
Re: T-Junctions re-visited Roland Melkert327March 12, 2013 11:41AM
Re: T-Junctions re-visited Ben Supnik335March 12, 2013 11:55AM
Re: T-Junctions re-visited Roland Melkert329March 13, 2013 10:08AM
Re: T-Junctions re-visited Travis Cobbs357March 13, 2013 11:27AM
Re: T-Junctions re-visited Allen Smith362March 12, 2013 02:01PM
Re: T-Junctions re-visited Michael Heidemann350March 13, 2013 09:27AM
Re: T-Junctions re-visited Ben Supnik331March 13, 2013 10:37AM
Re: T-Junctions re-visited Tim Gould334March 13, 2013 02:31PM
Re: T-Junctions re-visited Michael Heidemann319March 13, 2013 03:42PM
Re: T-Junctions re-visited Michael Heidemann358March 17, 2013 04:35AM
Re: T-Junctions re-visited Ben Supnik291March 17, 2013 08:43AM
Re: T-Junctions re-visited Michael Heidemann283March 17, 2013 08:59AM
Re: T-Junctions re-visited Ben Supnik290March 17, 2013 09:02AM
Re: T-Junctions re-visited Magnus Forsberg316March 17, 2013 09:15AM
Re: T-Junctions re-visited Travis Cobbs365March 17, 2013 10:09PM
Re: T-Junctions re-visited Ben Supnik333March 18, 2013 07:30AM
Re: T-Junctions re-visited Travis Cobbs324March 18, 2013 10:57AM
Re: T-Junctions re-visited Ben Supnik330March 18, 2013 11:27AM
Re: T-Junctions re-visited Travis Cobbs322March 18, 2013 12:23PM
Re: T-Junctions re-visited Ben Supnik346March 18, 2013 01:41PM
Re: T-Junctions re-visited Roland Melkert371March 18, 2013 02:51PM
Re: T-Junctions re-visited Travis Cobbs345March 18, 2013 02:59PM
Re: T-Junctions re-visited Roland Melkert414March 18, 2013 03:41PM
Re: T-Junctions re-visited Ben Supnik381March 18, 2013 06:09PM
Re: T-Junctions re-visited Roland Melkert334March 19, 2013 11:38AM
Re: T-Junctions re-visited Ben Supnik354March 19, 2013 11:43AM
Re: T-Junctions re-visited Roland Melkert381March 19, 2013 07:07PM
Re: T-Junctions re-visited Travis Cobbs351March 19, 2013 10:13PM
Re: T-Junctions re-visited Tim Gould342March 20, 2013 03:56AM
Re: T-Junctions re-visited Travis Cobbs327March 20, 2013 10:13AM
Re: T-Junctions re-visited Ben Supnik311March 20, 2013 10:23AM
Re: T-Junctions re-visited Travis Cobbs349March 20, 2013 10:29AM
Re: T-Junctions re-visited Travis Cobbs324March 20, 2013 10:26AM
Re: T-Junctions re-visited Ben Supnik307March 20, 2013 11:18AM
Re: T-Junctions re-visited Ben Supnik341March 20, 2013 06:42AM
Re: T-Junctions re-visited Roland Melkert305March 20, 2013 11:36AM
Re: T-Junctions re-visited Philippe Hurbain343March 20, 2013 06:36AM
Re: T-Junctions re-visited Ben Supnik391March 20, 2013 06:58AM
Re: T-Junctions re-visited Allen Smith365March 20, 2013 09:08AM
Re: T-Junctions re-visited Roland Melkert392March 20, 2013 11:35AM
Re: T-Junctions re-visited Ben Supnik803March 20, 2013 11:50AM
Re: T-Junctions re-visited Michael Heidemann381March 18, 2013 03:54PM
Re: T-Junctions re-visited Roland Melkert335March 13, 2013 10:03AM
Re: T-Junctions re-visited Tim Gould303March 13, 2013 03:56PM
Re: T-Junctions re-visited Sergio Reano293March 13, 2013 03:51PM
Re: T-Junctions re-visited Roland Melkert374March 13, 2013 04:36PM
Re: T-Junctions re-visited Tim Gould322March 13, 2013 05:10PM
Re: T-Junctions re-visited Ben Supnik347March 14, 2013 08:17PM
Re: T-Junctions re-visited Tim Gould388March 14, 2013 08:41PM
Re: T-Junctions re-visited Ben Supnik387March 15, 2013 10:56AM
Re: T-Junctions re-visited Roland Melkert331March 15, 2013 11:36AM
Re: T-Junctions re-visited Ben Supnik291March 13, 2013 06:58PM
Re: T-Junctions re-visited Roland Melkert300March 13, 2013 07:27PM
Re: T-Junctions re-visited Ben Supnik294March 13, 2013 07:37PM
Re: T-Junctions re-visited Roland Melkert318March 13, 2013 07:59PM
Re: T-Junctions re-visited Ben Supnik322March 13, 2013 08:18PM
Re: T-Junctions re-visited Travis Cobbs392March 14, 2013 03:23PM
Re: T-Junctions re-visited Roland Melkert397March 14, 2013 03:34PM
Re: T-Junctions re-visited Tim Gould374March 14, 2013 03:41PM
Re: T-Junctions re-visited Roland Melkert380March 15, 2013 11:33AM
Re: T-Junctions re-visited Tim Gould338March 13, 2013 07:43PM
Re: T-Junctions re-visited Roland Melkert297March 13, 2013 08:08PM
Re: T-Junctions re-visited Tim Gould322March 13, 2013 08:18PM
Re: T-Junctions re-visited Ben Supnik385March 14, 2013 08:15PM
Re: T-Junctions re-visited Roland Melkert382March 15, 2013 11:29AM
Re: T-Junctions re-visited Travis Cobbs362March 15, 2013 12:27PM
Re: T-Junctions re-visited Ben Supnik349March 15, 2013 05:08PM
Re: T-Junctions re-visited Travis Cobbs369March 16, 2013 11:29PM
Re: T-Junctions re-visited Ben Supnik281March 17, 2013 08:58AM
Re: T-Junctions re-visited Roland Melkert283March 17, 2013 12:35PM
Re: T-Junctions re-visited Travis Cobbs324March 18, 2013 12:28PM
Re: T-Junctions re-visited Travis Cobbs392March 18, 2013 12:32PM
Re: T-Junctions re-visited Roland Melkert350March 18, 2013 05:00PM
Re: T-Junctions re-visited Travis Cobbs371March 18, 2013 11:05PM
Re: T-Junctions re-visited Roland Melkert424March 19, 2013 11:38AM
Re: T-Junctions re-visited Sergio Reano364March 26, 2013 02:46PM
Re: T-Junctions re-visited Roland Melkert313March 27, 2013 11:19AM
Re: T-Junctions re-visited Sergio Reano404March 27, 2013 01:48PM



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