Hello,
If I understand you right, you want to be able to "pick" individual
transforms within a Scenegraph and manipulate them by rotation, translation,
and zoom.
The way I achieved this was extracting the code for PickRotateBehavior.java,
PickTranslationBehavior.java, and PickZoomBehavior.java from the source
"jar" file that came with Java3D. I tailored them to my needs and compiled
them directly in the folder where my application was.
I realized that PickRotate and the others actually use MouseRotateBehavior.
So, I didn't use MouseRotateBehavior in my code, just pick rotate, etc..
When I created the instance of the Pick Behaviors, I passed them my outer
most TransformGroup (my Scene scaling group) and the "this" of my
application..
I revamped my Pick code to take the passed transform group and application's
"this". In the part of the code where it shoots out a ray or something and
finds a transform group, I made it only pick one if the "shift" key was
done; otherwise, it would assume to use the passed outer most
transformgroup. The effect of that is the same as using just a
MouseBehavior on the scene.
One other thing, I had to pass the "this" of my application so that the Pick
behavior could get the display. In the code, you'll see (sjmLoad). That's
just my application I was passing.
In my createSceneGraph routine, the Picks were set up as follows:
PickRotateBehavior behavior4 = new PickRotateBehavior(objRoot, objScale,
sjmLoad.this, bounds,
PickObject.USE_GEOMETRY);
objRoot=the outermost BranchGroup
objScale=the TransformGroup attached to objRoot
sjmLoad.this=pointer to my application which is an extension of a Frame
bounds=the bounds
Attached is the revamped PickRotateBehavior.
Good luck,
Sean
PickRotateBehavior.java
