Michael, It seems to me that this might be a capabilities problem rather than a bounds problem. Specifically, look at the following capabilities and make sure they are getting set in the right Nodes (or Groups): Node.ENABLE_COLLISION_REPORTING and Group.ALLOW_COLLISION_BOUNDS_READ. Also, remember that a Group is a Node, so you should also set: myGroup.setCapability(Node.ENABLE_COLLISION_REPORTING) for your group nodes. From my experience this can be tricky because some capabilities seem to be propagated to children whereas others have to be manually applied recursively. Hope this helps, Guillermo E. Gutierrez, [EMAIL PROTECTED] Software Enginer, Visualization Group Harris Corporation Michael Lorenz wrote: > Hi! > > I have a few problems using the collision detection in java 3d. I'm trying > to catch collisions with my avatar (ViewerAvatar in ViewingPlatform) and the > walls of a maze-like building, to prevent the avatar from running through > walls. So far so good. > > I found several older mails in this group from programmers that tried to > make something simmilar. It would be nice if some of them can tell me about > her/his progress. > > Now to my specific problems: > > * It seems that collisions with group-nodes can't be detected. Is that > right? If yes, what are the collision bounds in groups for? > > * In the scene-graph all of my shapes are located below several group-nodes > (branch- and/or transform-groups). When I turn off the automatic calculation > of the bounds in any of these groups (using setBoundsAutoCompute()) and set > the corresponding bounds and collision-bounds manually (using setBounds() > resp. setCollisionBounds()) then no collision with underlying shapes happens > anymore. Even if I set these bounds to surround my entire scene. What did I > wrong? What are the (normal) bounds for? Do group-bounds have to surround > all their children? Are the bounds of a node (groups and leafs) affected by > superior transform groups (sometimes this seems not to be true for groups)? > > * Does anybody know a tutorial-like text or some sample-code that covers > collisions a bit more deeply than TickTockCollision? > > I'm hoping for your help. > > Sincerely, yours > > Michael Lorenz. > ([EMAIL PROTECTED]) > > ===================================================================== > To subscribe/unsubscribe, send mail to [EMAIL PROTECTED] > Java 3D Home Page: http://java.sun.com/products/java-media/3D/
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