Hi, The first one is very easy. How (or to be more exact, where) virtual / physical world units ratio is set? I want virtual coord system to be in meters, but i also want to set this ratio: that is how many meters of virtual world can be fitted into xxx pixels of real world, that is my display. Another question is a more difficult one. It concerns 3D math. Lets say we have an object (a car, for instance). We put it at (0,0,0) point, so that the length of the car is along Z axis, and Y and X axices go orthogonally through it (that is the object is simply added to TransormGroup). Let say that Length and Width are some imaginary axices that coinside in this moment with Z and X axices correspondingly and are attached to the object. Now, we rotate the object for sereral times. As a result we got to find a signed projection of (0,-c,0) vector (in the coord of the object) to the current Length and Width of the object. Is there a way to do it in a smart way, without creating real Width and Length vectors, rotating them together with the object and then calculating the angles between them and (0,-c,0) vector? So, guys, waiting for your wise advise. Thanks a ton for your efforts. vladimir =========================================================================== 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".
