Hello all,
I have a question about coordinate conversion. In my program, I have
transformed the Shape3D from local system to Virtual World space, then I add
Mouse Behaviors,such as MouseRotate,MouseZoom,MouseTranslate to it. The
scenegraph is like this:
objRoot
|
TG1--------MouseRotate,MouseZoom,MouseTranslate
|
TG2
|
Shape3D
I also add KeyNavigator Behavior to the viewplatform.
For example,when I use MouseBehavior to rotate the Shape3D,and then I use
mouse to pick one point in the scene, I want to get its local system's real
physical coordinate values,say (1002,234,78). How to do that? if invert the
getLocaltoVWorld will help? I used the Picking Utiity in the Java3D
1.2.1Beta,but it seems that I did not get the right result.How do I convert
the coordinates correctly taking into account of the MouseBehaviors(and
KeyNavigatorBehaviors)(no matter how the user rotate,zoom,translate the
scene)?
Could you write some sample code about my sceneGraph above/some
suggestions on how to solve this problem?
Thanks a lot!
David
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