I was wondering (and have experimented and failed) whether you could have a
completely invisible object in the scene that specularly reflects light.

For instance say you have a red sphere of radius 1, an invisible
dodecahedron of radius 1.1, and a few multi-colored spotlights.

Can you make it so the reflections shown on the ground and walls come from
the dodecahedron's surface without actually seeing the dodecahedron, and
all you see is the sphere which seems to be making the dodecahedron
reflections?

Thanks for any help!

Ravious

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