Re: Recreating scene graph with VisAD

• To: Greg Buron <gburon@xxxxxxxxxxxxxxxxxxxx>
• Subject: Re: Recreating scene graph with VisAD
• From: Bill Hibbard <billh@xxxxxxxxxxxxx>
• Date: Wed, 17 Jul 2002 18:06:20 -0500 (CDT)

On Wed, 17 Jul 2002, Greg Buron wrote:

> I have a question regarding recreating the scene graph with VisAd.  I am
> working on an application in which an object is created and a scene graph
> is created (somehow) and then when that file is closed, the scene graph is
> destroyed.  Then, when I try to open a new file in the same application I
> run into a null pointer exception because in the DisplayRendererJ3D class,
> when the renderer tries to access the view and vpTrans transform group.

We never see this behavior. You need to tell us what
VisAD methods you are calling to cause the Exception,
and whether you are directly manipulating the Java3D
scene graph by extending VisAD classes or some other
means.

Bill

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• References:
  • Recreating scene graph with VisAD
    • From: Greg Buron