If the grid of vertexes is regular (x point by y points of constant separation), Delaunay triangulation would not be needed, and is 1000x less efficient than a regular grid triangulator that I have.
So i presume something must be wrong with the implementation. Is it possible for your data to have two values at one (x,y) point? This would not qualify as a convex hull, and Delaunay would complain or break (depending on implementation) when it finds two points too cose together. As me any questions about Delaunay if you like, dont see any harm in doing it on list either - someone else may have the same queries and quandries sooner or later. Ta, N ----- Original Message ----- From: "Elisabeth Thorsen" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Tuesday, January 21, 2003 7:40 AM Subject: Re: [JAVA3D] ROAM, Delaunay and terrain-discuss list archive I hoped I would find my answers on that list...too bad... Do you have an updated version of the ROAM method in the source code from j3d.org? V0.6 is quite old.. I tried your code but ran into problems because I have lots of holes (NaN values) in my grid. The grid is also not regular like yours (it is regular (not in real coordinates). For each y the real (physical) distance ((y+1)-y) varies). (For each x,y,z coordinate there is a Point3d containing the real world coordinates). Elisabeth Thorsen -----Original Message----- From: Justin Couch [mailto:[EMAIL PROTECTED]] Sent: 21. januar 2003 08:30 To: [EMAIL PROTECTED] Subject: Re: [JAVA3D] ROAM, Delaunay and terrain-discuss list archive Elisabeth Thorsen wrote: > I am looking for information about ROAM and Delaunay methods used in java3D and thought the [EMAIL PROTECTED] would be the perfect place to start. Err... Didn't realise people could still subscribe. I thought I'd shut it down because no-one was making use of it. Hmmm.. time to check the configs again.... -- Justin Couch http://www.vlc.com.au/~justin/ Java Architect & Bit Twiddler http://www.yumetech.com/ Author, Java 3D FAQ Maintainer http://www.j3d.org/ ------------------------------------------------------------------- "Humanism is dead. Animals think, feel; so do machines now. Neither man nor woman is the measure of all things. Every organism processes data according to its domain, its environment; you, with all your brains, would be useless in a mouse's universe..." - Greg Bear, Slant ------------------------------------------------------------------- =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA3D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help". ========================= To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA3D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help". =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA3D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
