Welcome! Log In Create A New Profile

Advanced
Re: T-Junctions re-visited
avatarMarch 19, 2013 10:13PM
For reference I use a std::map for my vertex lookups. My key is a custom class that uses integers to store (x * 100, y * 100, z * 100), and implements operator<. See the TREVertexKey class here:

http://ldview.cvs.sourceforge.net/viewvc/ldview/LDView/TRE/TREVertexKey.h?view=markup

You could do something similar with your adjusted vertices. The std::map class uses a balanced binary tree, so has a lookup performance of O( log n ). Insertion is also O( log n ), but the balancing/heap allocation means that actual time to insert is longer than to do lookups. To be honest, I wouldn't know where to start to write a good hash function for a 3D vector to store them in a hash table.
SubjectAuthorViewsPosted
T-Junctions re-visited Travis Cobbs796March 11, 2013 10:38PM
Re: T-Junctions re-visited Tim Gould401March 11, 2013 11:31PM
Re: T-Junctions re-visited Roland Melkert374March 12, 2013 11:17AM
Re: T-Junctions re-visited Ben Supnik392March 12, 2013 11:17AM
Re: T-Junctions re-visited Roland Melkert361March 12, 2013 11:22AM
Re: T-Junctions re-visited Ben Supnik346March 12, 2013 11:32AM
Re: T-Junctions re-visited Roland Melkert340March 12, 2013 11:41AM
Re: T-Junctions re-visited Ben Supnik350March 12, 2013 11:55AM
Re: T-Junctions re-visited Roland Melkert346March 13, 2013 10:08AM
Re: T-Junctions re-visited Travis Cobbs369March 13, 2013 11:27AM
Re: T-Junctions re-visited Allen Smith379March 12, 2013 02:01PM
Re: T-Junctions re-visited Michael Heidemann365March 13, 2013 09:27AM
Re: T-Junctions re-visited Ben Supnik352March 13, 2013 10:37AM
Re: T-Junctions re-visited Tim Gould351March 13, 2013 02:31PM
Re: T-Junctions re-visited Michael Heidemann337March 13, 2013 03:42PM
Re: T-Junctions re-visited Michael Heidemann372March 17, 2013 04:35AM
Re: T-Junctions re-visited Ben Supnik306March 17, 2013 08:43AM
Re: T-Junctions re-visited Michael Heidemann306March 17, 2013 08:59AM
Re: T-Junctions re-visited Ben Supnik301March 17, 2013 09:02AM
Re: T-Junctions re-visited Magnus Forsberg327March 17, 2013 09:15AM
Re: T-Junctions re-visited Travis Cobbs380March 17, 2013 10:09PM
Re: T-Junctions re-visited Ben Supnik346March 18, 2013 07:30AM
Re: T-Junctions re-visited Travis Cobbs337March 18, 2013 10:57AM
Re: T-Junctions re-visited Ben Supnik346March 18, 2013 11:27AM
Re: T-Junctions re-visited Travis Cobbs338March 18, 2013 12:23PM
Re: T-Junctions re-visited Ben Supnik373March 18, 2013 01:41PM
Re: T-Junctions re-visited Roland Melkert389March 18, 2013 02:51PM
Re: T-Junctions re-visited Travis Cobbs364March 18, 2013 02:59PM
Re: T-Junctions re-visited Roland Melkert431March 18, 2013 03:41PM
Re: T-Junctions re-visited Ben Supnik404March 18, 2013 06:09PM
Re: T-Junctions re-visited Roland Melkert356March 19, 2013 11:38AM
Re: T-Junctions re-visited Ben Supnik377March 19, 2013 11:43AM
Re: T-Junctions re-visited Roland Melkert400March 19, 2013 07:07PM
Re: T-Junctions re-visited Travis Cobbs371March 19, 2013 10:13PM
Re: T-Junctions re-visited Tim Gould373March 20, 2013 03:56AM
Re: T-Junctions re-visited Travis Cobbs344March 20, 2013 10:13AM
Re: T-Junctions re-visited Ben Supnik334March 20, 2013 10:23AM
Re: T-Junctions re-visited Travis Cobbs364March 20, 2013 10:29AM
Re: T-Junctions re-visited Travis Cobbs343March 20, 2013 10:26AM
Re: T-Junctions re-visited Ben Supnik325March 20, 2013 11:18AM
Re: T-Junctions re-visited Ben Supnik363March 20, 2013 06:42AM
Re: T-Junctions re-visited Roland Melkert323March 20, 2013 11:36AM
Re: T-Junctions re-visited Philippe Hurbain358March 20, 2013 06:36AM
Re: T-Junctions re-visited Ben Supnik405March 20, 2013 06:58AM
Re: T-Junctions re-visited Allen Smith386March 20, 2013 09:08AM
Re: T-Junctions re-visited Roland Melkert424March 20, 2013 11:35AM
Re: T-Junctions re-visited Ben Supnik845March 20, 2013 11:50AM
Re: T-Junctions re-visited Michael Heidemann398March 18, 2013 03:54PM
Re: T-Junctions re-visited Roland Melkert353March 13, 2013 10:03AM
Re: T-Junctions re-visited Tim Gould319March 13, 2013 03:56PM
Re: T-Junctions re-visited Sergio Reano310March 13, 2013 03:51PM
Re: T-Junctions re-visited Roland Melkert388March 13, 2013 04:36PM
Re: T-Junctions re-visited Tim Gould338March 13, 2013 05:10PM
Re: T-Junctions re-visited Ben Supnik364March 14, 2013 08:17PM
Re: T-Junctions re-visited Tim Gould412March 14, 2013 08:41PM
Re: T-Junctions re-visited Ben Supnik406March 15, 2013 10:56AM
Re: T-Junctions re-visited Roland Melkert352March 15, 2013 11:36AM
Re: T-Junctions re-visited Ben Supnik304March 13, 2013 06:58PM
Re: T-Junctions re-visited Roland Melkert314March 13, 2013 07:27PM
Re: T-Junctions re-visited Ben Supnik311March 13, 2013 07:37PM
Re: T-Junctions re-visited Roland Melkert335March 13, 2013 07:59PM
Re: T-Junctions re-visited Ben Supnik337March 13, 2013 08:18PM
Re: T-Junctions re-visited Travis Cobbs404March 14, 2013 03:23PM
Re: T-Junctions re-visited Roland Melkert416March 14, 2013 03:34PM
Re: T-Junctions re-visited Tim Gould399March 14, 2013 03:41PM
Re: T-Junctions re-visited Roland Melkert403March 15, 2013 11:33AM
Re: T-Junctions re-visited Tim Gould349March 13, 2013 07:43PM
Re: T-Junctions re-visited Roland Melkert319March 13, 2013 08:08PM
Re: T-Junctions re-visited Tim Gould339March 13, 2013 08:18PM
Re: T-Junctions re-visited Ben Supnik404March 14, 2013 08:15PM
Re: T-Junctions re-visited Roland Melkert395March 15, 2013 11:29AM
Re: T-Junctions re-visited Travis Cobbs377March 15, 2013 12:27PM
Re: T-Junctions re-visited Ben Supnik361March 15, 2013 05:08PM
Re: T-Junctions re-visited Travis Cobbs387March 16, 2013 11:29PM
Re: T-Junctions re-visited Ben Supnik291March 17, 2013 08:58AM
Re: T-Junctions re-visited Roland Melkert292March 17, 2013 12:35PM
Re: T-Junctions re-visited Travis Cobbs338March 18, 2013 12:28PM
Re: T-Junctions re-visited Travis Cobbs410March 18, 2013 12:32PM
Re: T-Junctions re-visited Roland Melkert365March 18, 2013 05:00PM
Re: T-Junctions re-visited Travis Cobbs390March 18, 2013 11:05PM
Re: T-Junctions re-visited Roland Melkert445March 19, 2013 11:38AM
Re: T-Junctions re-visited Sergio Reano389March 26, 2013 02:46PM
Re: T-Junctions re-visited Roland Melkert331March 27, 2013 11:19AM
Re: T-Junctions re-visited Sergio Reano427March 27, 2013 01:48PM



Sorry, only registered users may post in this forum.

Click here to login