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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 Cobbs635March 11, 2013 10:38PM
Re: T-Junctions re-visited Tim Gould293March 11, 2013 11:31PM
Re: T-Junctions re-visited Roland Melkert272March 12, 2013 11:17AM
Re: T-Junctions re-visited Ben Supnik282March 12, 2013 11:17AM
Re: T-Junctions re-visited Roland Melkert256March 12, 2013 11:22AM
Re: T-Junctions re-visited Ben Supnik263March 12, 2013 11:32AM
Re: T-Junctions re-visited Roland Melkert256March 12, 2013 11:41AM
Re: T-Junctions re-visited Ben Supnik264March 12, 2013 11:55AM
Re: T-Junctions re-visited Roland Melkert259March 13, 2013 10:08AM
Re: T-Junctions re-visited Travis Cobbs284March 13, 2013 11:27AM
Re: T-Junctions re-visited Allen Smith303March 12, 2013 02:01PM
Re: T-Junctions re-visited Michael Heidemann269March 13, 2013 09:27AM
Re: T-Junctions re-visited Ben Supnik264March 13, 2013 10:37AM
Re: T-Junctions re-visited Tim Gould251March 13, 2013 02:31PM
Re: T-Junctions re-visited Michael Heidemann256March 13, 2013 03:42PM
Re: T-Junctions re-visited Michael Heidemann246March 17, 2013 04:35AM
Re: T-Junctions re-visited Ben Supnik235March 17, 2013 08:43AM
Re: T-Junctions re-visited Michael Heidemann231March 17, 2013 08:59AM
Re: T-Junctions re-visited Ben Supnik241March 17, 2013 09:02AM
Re: T-Junctions re-visited Magnus Forsberg234March 17, 2013 09:15AM
Re: T-Junctions re-visited Travis Cobbs305March 17, 2013 10:09PM
Re: T-Junctions re-visited Ben Supnik261March 18, 2013 07:30AM
Re: T-Junctions re-visited Travis Cobbs268March 18, 2013 10:57AM
Re: T-Junctions re-visited Ben Supnik277March 18, 2013 11:27AM
Re: T-Junctions re-visited Travis Cobbs260March 18, 2013 12:23PM
Re: T-Junctions re-visited Ben Supnik278March 18, 2013 01:41PM
Re: T-Junctions re-visited Roland Melkert285March 18, 2013 02:51PM
Re: T-Junctions re-visited Travis Cobbs259March 18, 2013 02:59PM
Re: T-Junctions re-visited Roland Melkert285March 18, 2013 03:41PM
Re: T-Junctions re-visited Ben Supnik270March 18, 2013 06:09PM
Re: T-Junctions re-visited Roland Melkert273March 19, 2013 11:38AM
Re: T-Junctions re-visited Ben Supnik300March 19, 2013 11:43AM
Re: T-Junctions re-visited Roland Melkert312March 19, 2013 07:07PM
Re: T-Junctions re-visited Travis Cobbs283March 19, 2013 10:13PM
Re: T-Junctions re-visited Tim Gould270March 20, 2013 03:56AM
Re: T-Junctions re-visited Travis Cobbs261March 20, 2013 10:13AM
Re: T-Junctions re-visited Ben Supnik249March 20, 2013 10:23AM
Re: T-Junctions re-visited Travis Cobbs263March 20, 2013 10:29AM
Re: T-Junctions re-visited Travis Cobbs265March 20, 2013 10:26AM
Re: T-Junctions re-visited Ben Supnik240March 20, 2013 11:18AM
Re: T-Junctions re-visited Ben Supnik259March 20, 2013 06:42AM
Re: T-Junctions re-visited Roland Melkert252March 20, 2013 11:36AM
Re: T-Junctions re-visited Philippe Hurbain260March 20, 2013 06:36AM
Re: T-Junctions re-visited Ben Supnik264March 20, 2013 06:58AM
Re: T-Junctions re-visited Allen Smith270March 20, 2013 09:08AM
Re: T-Junctions re-visited Roland Melkert283March 20, 2013 11:35AM
Re: T-Junctions re-visited Ben Supnik666March 20, 2013 11:50AM
Re: T-Junctions re-visited Michael Heidemann282March 18, 2013 03:54PM
Re: T-Junctions re-visited Roland Melkert259March 13, 2013 10:03AM
Re: T-Junctions re-visited Tim Gould236March 13, 2013 03:56PM
Re: T-Junctions re-visited Sergio Reano241March 13, 2013 03:51PM
Re: T-Junctions re-visited Roland Melkert307March 13, 2013 04:36PM
Re: T-Junctions re-visited Tim Gould265March 13, 2013 05:10PM
Re: T-Junctions re-visited Ben Supnik247March 14, 2013 08:17PM
Re: T-Junctions re-visited Tim Gould316March 14, 2013 08:41PM
Re: T-Junctions re-visited Ben Supnik307March 15, 2013 10:56AM
Re: T-Junctions re-visited Roland Melkert263March 15, 2013 11:36AM
Re: T-Junctions re-visited Ben Supnik234March 13, 2013 06:58PM
Re: T-Junctions re-visited Roland Melkert247March 13, 2013 07:27PM
Re: T-Junctions re-visited Ben Supnik232March 13, 2013 07:37PM
Re: T-Junctions re-visited Roland Melkert247March 13, 2013 07:59PM
Re: T-Junctions re-visited Ben Supnik272March 13, 2013 08:18PM
Re: T-Junctions re-visited Travis Cobbs292March 14, 2013 03:23PM
Re: T-Junctions re-visited Roland Melkert299March 14, 2013 03:34PM
Re: T-Junctions re-visited Tim Gould315March 14, 2013 03:41PM
Re: T-Junctions re-visited Roland Melkert280March 15, 2013 11:33AM
Re: T-Junctions re-visited Tim Gould240March 13, 2013 07:43PM
Re: T-Junctions re-visited Roland Melkert241March 13, 2013 08:08PM
Re: T-Junctions re-visited Tim Gould246March 13, 2013 08:18PM
Re: T-Junctions re-visited Ben Supnik306March 14, 2013 08:15PM
Re: T-Junctions re-visited Roland Melkert301March 15, 2013 11:29AM
Re: T-Junctions re-visited Travis Cobbs269March 15, 2013 12:27PM
Re: T-Junctions re-visited Ben Supnik283March 15, 2013 05:08PM
Re: T-Junctions re-visited Travis Cobbs269March 16, 2013 11:29PM
Re: T-Junctions re-visited Ben Supnik228March 17, 2013 08:58AM
Re: T-Junctions re-visited Roland Melkert233March 17, 2013 12:35PM
Re: T-Junctions re-visited Travis Cobbs257March 18, 2013 12:28PM
Re: T-Junctions re-visited Travis Cobbs277March 18, 2013 12:32PM
Re: T-Junctions re-visited Roland Melkert271March 18, 2013 05:00PM
Re: T-Junctions re-visited Travis Cobbs303March 18, 2013 11:05PM
Re: T-Junctions re-visited Roland Melkert325March 19, 2013 11:38AM
Re: T-Junctions re-visited Sergio Reano307March 26, 2013 02:46PM
Re: T-Junctions re-visited Roland Melkert258March 27, 2013 11:19AM
Re: T-Junctions re-visited Sergio Reano307March 27, 2013 01:48PM



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