On Fri, Jul 18, 2008 at 12:01, John Hunter <[EMAIL PROTECTED]> wrote: > On Fri, Jul 18, 2008 at 11:49 AM, Jeff Whitaker <[EMAIL PROTECTED]> wrote: > >> John: I concur with your plan. The triangulation algorithm used in the >> natgrid package is quite bulletproof. Unfortunately, it's GPL and I haven't >> been able to get NCAR to change the license. I checked Shewchuk's web page >> and unfortunately his code comes with this license: > > Well there are two parts to his code. His triangulation code license > is clearly unacceptable, but we could send Fernando over to talk to > him (since Fernando is now at Berkeley too) about considering a > license change. But his predicates code for orientation and incircle > tests is in the public domain > (http://www.cs.cmu.edu/afs/cs/project/quake/public/code/predicates.c). > I think Robert was referring to incorporating these robust tests into > his code rather than the actual triangle implementation, but perhaps > he can clarify.
I meant that a Delaunay triangulation routine can be written using these public domain robust predicates. The current sweepline algorithm is not formulated to be able to use these predicates, so a different algorithm has to be implemented rather than simply incorporating the predicates into the current code. -- Robert Kern "I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth." -- Umberto Eco ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Matplotlib-devel mailing list Matplotlib-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-devel
