Okay, here's another question on Bounds that I haven't figured out yet.
I finally figured out that to get the bounds of a Shape3D (or any Node)
in virtual world coordinates, to do the following:
void printBounds( Node n )
{
Bounds b = new BoundingSphere( n.getBounds() );
Transform3D xform = new Transform3D();
n.getLocalToVworld( xform );
b.transform( xform );
System.out.println( "NODE " + node + " nchildren=" +
node.numChildren() );
System.out.println( " bounds=" + b );
}
This works to show me the true bounds of my shape. Now, I have a scene
graph that looks like:
TG (instance)
|
TG (pivot)
|
G (group)
|
Shape3D
Since I compute the bounds of the shape in vworld coords, it include the
2 TG's above. Thus, the bounds for each node shown in my scene graph
SHOULD BE EXACTLY THE SAME, but it's not:
NODE javax.media.j3d.TransformGroup@78aa80 nchildren=1
bounds=Center=(37.001460210540245, 217.4887110348027,
50.68139838796939) Radius=33.7654125608372 NODE
javax.media.j3d.TransformGroup@1d98a nchildren=1
bounds=Center=(8.189181655713963, 179.66457649987368,
37.125225898632465) Radius=48.28454144558632 NODE
javax.media.j3d.Group@712651 nchildren=1
bounds=Center=(8.189181655713963, 179.66457649987368,
37.125225898632465) Radius=48.28454144558632 NODE
javax.media.j3d.Shape3D@aab40
bounds=Center=(8.189181655713963, 179.66457649987368,
37.125225898632465) Radius=48.28454144558632
How could a transform group change the bounds if it only has one child??
Again, the bounds computed for each node INCLUDES the transforms above
it using the code I have shown.
J. Lee Dixon
SAIC - Celebration, FL
321-939-7917
[EMAIL PROTECTED] AOL: LeeOrlando
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