Hi All,
I have the following scenegraph:
BranchGroup
|_____TransformGroup
|_____ BranchGroup b
|____ BranchGroup b1
|_______ Morph m1
|_______ Morph m2
|_______ Behavior object with trigger as mouse click
|____ BranchGroup b2
|____ BranchGroup b3
|____ BranchGroup b4
b1, b2, b3 and b4 are identical with different geometries.
m1 and m2 are different morph objects.
At some stage, I want to replace the geometries of b1 with some other
geometry.
But, due to some bug in Java3D, I have to detach this branchgroup, create a
new
one with the other geometry and attach it to the branchgroup b.
Replacing (attaching and detaching) of the geometry b1 works fine, but after
that,
when I try to pick the object using the mouse, it gives me the following
exception:
Exception occurred during Behavior execution:
java.lang.IllegalStateException: Picking can only work if BranchGroup is
alive
at javax.media.j3d.BranchGroup.pickAll(BranchGroup.java:115)
at
com.sun.j3d.utils.picking.PickTool.pickGeomAllSortedIntersect(PickTool.java:
793)
at
com.sun.j3d.utils.picking.PickTool.pickGeomClosestIntersect(PickTool.java:84
7)
at com.sun.j3d.utils.picking.PickTool.pickClosest(PickTool.java:515)
at
com.liqwidkrystal.vBook.behaviors.MorphBehavior.processStimulus(MorphBehavio
r.java:258)
at javax.media.j3d.BehaviorScheduler.doWork(BehaviorScheduler.java:167)
at javax.media.j3d.J3dThread.run(J3dThread.java:256)
Is it not that when I add a BranchGroup to an already compiled branch group
(b in this case),
the added branch group becomes live?
Also, the behavior is expected till the mouse is clicked on the geometry of
the
newly added branch group.
Am I doing something wrong? Or something more has to be done to make the
newly
added branch group live?
Thanks,
Sameer
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