Hi Sam, >2) My second question is: "What is a cheap algorithm to extract/ trace the >outline of the compressed objected onto the required plane? "
One quick way to do it would be to compress the object onto a plane, render it onto an offscreen buffer, read back the buffer and then apply an edge detection algorithm to this buffer. Edge detection isn't a very expensive operation and essentially involves convolving the buffer with a small kernel (5x5 matrix). You should be able to find details of edge detection in any computer vision book within the first 20 pages. Moreover, as you noted you could use the bounding sphere of the object to restrict the area on which you apply the edge detection kernel. Surendra Java 3D Team Sun Microsystems =========================================================================== 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".
