You just want to perform animation by moving the particle, is that correct? That's what TransformGroups are for. A TransformGroup specifies the position, rotation etc. of its children. So just parent your particle with a TransformGroup, and for every frame, set the translation component of the Transform3D of the TransformGroup equal to the new position read in from your file.
That is how animation is intended. Effectively changing the structure of the Scene Graph each frame is VERY expensive, and should be avoided! Lewis. -----Original Message----- From: Discussion list for Java 3D API [mailto:[EMAIL PROTECTED] On Behalf Of Mika Kastenholz Sent: 25 August 2003 09:26 To: [EMAIL PROTECTED] Subject: [JAVA3D] fast SceneGraph update? what is the fastest way to update a SceneGraph? imagine reading in particle position frames from a coordinate file and displaying them as balls or connected lines so as to obtain a continuous trajectory. the scene itself should be able to allow for rotation and translation while updating the positions. currently, i am simply creating a new BranchGroup with the new positions and using the setChild() method to replace the old BranchGroup. this works, is however very slow once you need to traverse through a number of Nodes/TransformGroups/BranchGroups by using the getChild() method. in addition, the rotation/translation gets jerky even though everything runs as a separate thread. is there a faster way of doing this? thanks in advance m ======================================================================== === 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".
