> Any ideas how to render the surface so that I can see it from above and
below?
That's because the back faces of your polygon are culled (i.e. not drawn).
You have to create a PolygonAttibutes. In this class you must specify
that you want culling mode to CULL_NONE, and set this PolygonAttributes to
your appearance and it's should work fine.
renaud
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