You can use a shared group and a link node to solve this problem. The other solution is to use a "fake" sphere by using alpha blended textures (with a picture of a sphere on it) and using a single geometry array with one quad per sphere. Each frame adjust the coords of each quad to point at the camera.
Dave Yazel ----- Original Message ----- From: Nitin.Jain <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, January 21, 2002 10:08 AM Subject: [JAVA3D] Sphere rendering problem Hi, We have an application in which we need to display thousands of sphere(upto 50k) at a time. The standard java3D Sphere class takes lot of memory and gives an OutOfMemory error. I tried sharing the Appearance object (as suggested in the archives) but it hardly improves the condition. It only displays maximum 3k spheres at a time. We need to find a way where we can SAVE on the memory usage. Is there a way where we can share the Sphere object also. We have only 4-5 different colours-radii combination. Is there a way to create these 4-5 unique sphere object and render them at different position. Another option comes to my mind is to develop our own sphere class, in which we only display the hemi-sphere which is visible. But, how do we handle the rotation, because as we rotate the view, the other side of hemi-sphere(which is not drawn) starts appearing on the screen. OR suggest, if there are any algorithms which can be used in such scenarios. Thanks in advance, Regards, Nitin Jain ingenovis, A division of i-Labs Ltd. Hyderabad, India Phone : 91-40-3352900/2 Ext.2016 Fax : 91-40-3351522 Email : [EMAIL PROTECTED] http://www.ingenovis.com =========================================================================== 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".
