Sometimes, when I'm using high complex mech2 objects, I have "light areas" or
"light lines" in concave corners.

see picture

Note:
-this is not an effect of radiosity. (same effect, when I'm render without)
-I have the same effect in MegaPov and PovMan
-the mesh2 object has no normal entrys
-it has _only_ 90 degree corners
-when I'm turn the colour of the object to black the effect disappear
-sometimes it disappear, when I'm reduce the amount of objects in the scene.
This works also, when I'm using the merge{} command to combine several objects
into one.
-it seams to me, that I'm looking through the geometry onto the backside (or
inside) of the object.

Anybody knows a way to give the inside of a mesh2 object a different colour as
the  outside? (depending on the normals of the faces)

This might help to find the problem.

-holger-

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