Hi there,

I'm seeking guidance on what appears to be a bug in
Java3D. (i.e. Is this a genuine bug, or is my
ignorance of the API?)

The 1.3.1 API docs state for the Window Movement
Policy:-

"A value of PHYSICAL_WORLD implies that the image seen
in the window remains the same no matter where the
user positions the window on the screen. The default
window movement policy is PHYSICAL_WORLD."

(See
http://java.sun.com/products/java-media/3D/forDevelopers/j3dapi/javax/media/j3d/View.html#setWindowMovementPolicy(int))

However, I've noticed that in ALL of the Java 3D demos
when you run them as applets, that if you move the
browser window, the view of the 3D world _is_
transformed. (As if the default policy is
VIRTUAL_WORLD). See this online demo for example
http://www.sportsci.com/pzt/java3d/GearTest/GearBox_plugin.html.

There is one exception to this.  The ConicWorld demo
_does_ appear to work.  However, that appears to be
only because textures have been used - if you remove
the textures, then the demo is also broken.

There is no explicit modification of the window
movement policy in any of the applets source code.

My problem is that I want to use Java3D for a product
that doesn't use textures, so this 'bug' is be a BIG
issue for me. (I cannot use alternative technologies
because they all lack features that I need.)

I've only seen this problem on Windows XP, with the
1.3.1 (OpenGL) SDK installed. But I do not have other
platforms to verify that this is a bug. So....is this
issue seen on other platforms? Anyone care to
contribute their findings???

Thanks in advance for any help

J






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