On 11/3/23 18:25, Mike Miller wrote:
> my scene is enclosed/surrounded with a mapped sphere object. I did try Alain's
> idea....same results. I added depth to the billboards but it renders both front
> and back resulting in a double image. Is there backface culling in POV? ...don't
> see it in the help files. I'll try a clipped plane just to test.

There is interior_texture{}.

I think you could make the normal texture{} completely transparent and 
the interior_texture{} your image map. It should be the first 
intersection on the billboard uses the exterior texture{} and the second 
interior_texture{}.

Aside: By default texture{} gets used for the interior texture of shapes 
too - if you only specify a texture{}.

Bill P.

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