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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 Cobbs924March 11, 2013 10:38PM
Re: T-Junctions re-visited Tim Gould486March 11, 2013 11:31PM
Re: T-Junctions re-visited Roland Melkert423March 12, 2013 11:17AM
Re: T-Junctions re-visited Ben Supnik440March 12, 2013 11:17AM
Re: T-Junctions re-visited Roland Melkert411March 12, 2013 11:22AM
Re: T-Junctions re-visited Ben Supnik396March 12, 2013 11:32AM
Re: T-Junctions re-visited Roland Melkert386March 12, 2013 11:41AM
Re: T-Junctions re-visited Ben Supnik398March 12, 2013 11:55AM
Re: T-Junctions re-visited Roland Melkert393March 13, 2013 10:08AM
Re: T-Junctions re-visited Travis Cobbs418March 13, 2013 11:27AM
Re: T-Junctions re-visited Allen Smith428March 12, 2013 02:01PM
Re: T-Junctions re-visited Michael Heidemann411March 13, 2013 09:27AM
Re: T-Junctions re-visited Ben Supnik389March 13, 2013 10:37AM
Re: T-Junctions re-visited Tim Gould397March 13, 2013 02:31PM
Re: T-Junctions re-visited Michael Heidemann382March 13, 2013 03:42PM
Re: T-Junctions re-visited Michael Heidemann409March 17, 2013 04:35AM
Re: T-Junctions re-visited Ben Supnik354March 17, 2013 08:43AM
Re: T-Junctions re-visited Michael Heidemann353March 17, 2013 08:59AM
Re: T-Junctions re-visited Ben Supnik343March 17, 2013 09:02AM
Re: T-Junctions re-visited Magnus Forsberg363March 17, 2013 09:15AM
Re: T-Junctions re-visited Travis Cobbs430March 17, 2013 10:09PM
Re: T-Junctions re-visited Ben Supnik399March 18, 2013 07:30AM
Re: T-Junctions re-visited Travis Cobbs394March 18, 2013 10:57AM
Re: T-Junctions re-visited Ben Supnik402March 18, 2013 11:27AM
Re: T-Junctions re-visited Travis Cobbs375March 18, 2013 12:23PM
Re: T-Junctions re-visited Ben Supnik448March 18, 2013 01:41PM
Re: T-Junctions re-visited Roland Melkert457March 18, 2013 02:51PM
Re: T-Junctions re-visited Travis Cobbs436March 18, 2013 02:59PM
Re: T-Junctions re-visited Roland Melkert497March 18, 2013 03:41PM
Re: T-Junctions re-visited Ben Supnik488March 18, 2013 06:09PM
Re: T-Junctions re-visited Roland Melkert428March 19, 2013 11:38AM
Re: T-Junctions re-visited Ben Supnik442March 19, 2013 11:43AM
Re: T-Junctions re-visited Roland Melkert467March 19, 2013 07:07PM
Re: T-Junctions re-visited Travis Cobbs442March 19, 2013 10:13PM
Re: T-Junctions re-visited Tim Gould446March 20, 2013 03:56AM
Re: T-Junctions re-visited Travis Cobbs408March 20, 2013 10:13AM
Re: T-Junctions re-visited Ben Supnik404March 20, 2013 10:23AM
Re: T-Junctions re-visited Travis Cobbs434March 20, 2013 10:29AM
Re: T-Junctions re-visited Travis Cobbs410March 20, 2013 10:26AM
Re: T-Junctions re-visited Ben Supnik388March 20, 2013 11:18AM
Re: T-Junctions re-visited Ben Supnik409March 20, 2013 06:42AM
Re: T-Junctions re-visited Roland Melkert387March 20, 2013 11:36AM
Re: T-Junctions re-visited Philippe Hurbain407March 20, 2013 06:36AM
Re: T-Junctions re-visited Ben Supnik450March 20, 2013 06:58AM
Re: T-Junctions re-visited Allen Smith456March 20, 2013 09:08AM
Re: T-Junctions re-visited Roland Melkert523March 20, 2013 11:35AM
Re: T-Junctions re-visited Ben Supnik933March 20, 2013 11:50AM
Re: T-Junctions re-visited Michael Heidemann472March 18, 2013 03:54PM
Re: T-Junctions re-visited Roland Melkert395March 13, 2013 10:03AM
Re: T-Junctions re-visited Tim Gould362March 13, 2013 03:56PM
Re: T-Junctions re-visited Sergio Reano350March 13, 2013 03:51PM
Re: T-Junctions re-visited Roland Melkert438March 13, 2013 04:36PM
Re: T-Junctions re-visited Tim Gould384March 13, 2013 05:10PM
Re: T-Junctions re-visited Ben Supnik431March 14, 2013 08:17PM
Re: T-Junctions re-visited Tim Gould483March 14, 2013 08:41PM
Re: T-Junctions re-visited Ben Supnik448March 15, 2013 10:56AM
Re: T-Junctions re-visited Roland Melkert396March 15, 2013 11:36AM
Re: T-Junctions re-visited Ben Supnik349March 13, 2013 06:58PM
Re: T-Junctions re-visited Roland Melkert367March 13, 2013 07:27PM
Re: T-Junctions re-visited Ben Supnik349March 13, 2013 07:37PM
Re: T-Junctions re-visited Roland Melkert407March 13, 2013 07:59PM
Re: T-Junctions re-visited Ben Supnik409March 13, 2013 08:18PM
Re: T-Junctions re-visited Travis Cobbs473March 14, 2013 03:23PM
Re: T-Junctions re-visited Roland Melkert487March 14, 2013 03:34PM
Re: T-Junctions re-visited Tim Gould474March 14, 2013 03:41PM
Re: T-Junctions re-visited Roland Melkert444March 15, 2013 11:33AM
Re: T-Junctions re-visited Tim Gould382March 13, 2013 07:43PM
Re: T-Junctions re-visited Roland Melkert383March 13, 2013 08:08PM
Re: T-Junctions re-visited Tim Gould405March 13, 2013 08:18PM
Re: T-Junctions re-visited Ben Supnik476March 14, 2013 08:15PM
Re: T-Junctions re-visited Roland Melkert446March 15, 2013 11:29AM
Re: T-Junctions re-visited Travis Cobbs425March 15, 2013 12:27PM
Re: T-Junctions re-visited Ben Supnik413March 15, 2013 05:08PM
Re: T-Junctions re-visited Travis Cobbs436March 16, 2013 11:29PM
Re: T-Junctions re-visited Ben Supnik351March 17, 2013 08:58AM
Re: T-Junctions re-visited Roland Melkert339March 17, 2013 12:35PM
Re: T-Junctions re-visited Travis Cobbs379March 18, 2013 12:28PM
Re: T-Junctions re-visited Travis Cobbs479March 18, 2013 12:32PM
Re: T-Junctions re-visited Roland Melkert433March 18, 2013 05:00PM
Re: T-Junctions re-visited Travis Cobbs459March 18, 2013 11:05PM
Re: T-Junctions re-visited Roland Melkert519March 19, 2013 11:38AM
Re: T-Junctions re-visited Sergio Reano464March 26, 2013 02:46PM
Re: T-Junctions re-visited Roland Melkert384March 27, 2013 11:19AM
Re: T-Junctions re-visited Sergio Reano492March 27, 2013 01:48PM



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