[JAVA3D] collision detection

hi There are two shapes in my scene. Both of them are loaded by using Lw3dLoader class.(They are lws models) user can move,rotate and zoom by picking on one of them. When two shapes are intersected, I want to write a message to the screen. I write a code similar the example that is given demo Tick

Re: [JAVA3D] contour plots

Thank you all for your helpful comments.  While searching the net, I came across some free software called VisAD ( www.ssec.wisc.edu/~billh/visad.html ).  Has anyone had any experience with it? Could I use classes from there to construct contour planes and link it with my program that display

[JAVA3D] j3d.backgroundtexture in applets

Does anyone know a way to set a system parameter inside one's code, or otherwise to get the effect of setting it when an applet executes? My application is just running an animation in front of a background texture. I find that setting the system parameter j3d.backgroundtexture=false dramatically