Thanks a lot for all your suggestions. I've used IndexedTriangleArrays to model the geometries as even though the coordinates data differs for every particle, there are only 4 or 5 'types' or 'shape' of particles, such that every particle of a certain 'type' or 'shape' uses the same index arrays. I thought doing it this way would help reduce the amount of memory used (and thus lead to better peformance) as otherwise the coordinates data for each vertex would have to be added several times (atleast 6 times for 3 faces meeting at a corner) if I were to use 1 TriangleArray. Am I correct in thinking so?
-----Original Message----- From: Discussion list for Java 3D API [mailto:[EMAIL PROTECTED] On Behalf Of Florin Herinean Sent: Friday, February 20, 2004 9:27 AM To: [EMAIL PROTECTED] Subject: Re: [JAVA3D] Shape3D problem Ok, now I understand better. You can still use 1 TriangleArray holding all your geometry. Better, BY_REFERENCE, and then you update it with a GeometryUpdater. That ensures that the whole geometry will be consistent. And, considering what you're doing, the fastest option. Cheers, Florin -----Original Message----- From: Discussion list for Java 3D API [mailto:[EMAIL PROTECTED] Behalf Of Ibrahim Z Mohammad Sent: Freitag, 20. Februar 2004 16:17 To: [EMAIL PROTECTED] Subject: Re: [JAVA3D] Shape3D problem I can't use a Point Array as each particle has to be modelled as a 3D object with distinct geometry and orientation. The simulation includes particles of different arbitrary geometries (shapes with n-sided polygonal convex faces) and the orientations change from frame to frame. Instead of dealing with a large number of TransformGroups I just recreate the geometries for each frame. -----Original Message----- From: Discussion list for Java 3D API [mailto:[EMAIL PROTECTED] On Behalf Of T.J.Hunt Sent: Friday, February 20, 2004 8:29 AM To: [EMAIL PROTECTED] Subject: Re: [JAVA3D] Shape3D problem From: Ibrahim Z Mohammad [mailto:[EMAIL PROTECTED] > The problem is, since > I have a very large number of geometries (around 30,000, I'm > doing visualization for a granular soil particle simulation > where each geometry is a soil particle), the geometries don't > appear at the same time, rather the renderer starts by > rendering the geometries one by one, from the first added one > to the last. Why not use just one geometry, which is a PointArray with 30,000 points in it, and instead of adding and removing the Geometries, just change the coordinates of the points in the array? Tim. =========================================================================== 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". =========================================================================== 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".
