I recently started seeing a strange anomaly.  I have a solar system
simulator in one of my scenes.  Each planet is lit and has a line
through its rotational axis.  The planets are actually Sun J3D utility
Spheres.  For some reason, they began to disappear and reappear as I
changed my viewing angle, but the axis line remained visible.

I took a guess and figured that the only thing different was that the
planets were made using the Sun Sphere class, and that this class SHARES
it's geometry among the different Sphere instantiations.  After setting
the flag GEOMETRY_NOT_SHARED, the problem went away.

Of course the problem is sporadic, and I do not have time to make a test
case.  I found this problem while using J3D OpenGL 1.2.1 beta 1 and
DirectX 1.2.1 beta 1.  I have been unable to replicate the problem using
J3D OpenGL 1.2.

J. Lee Dixon
SAIC - Celebration, FL
407-566-1438
[EMAIL PROTECTED]    AOL: LeeOrlando

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