Wijnand Nijs wrote:
> Pov-help and the isosurface tutorial was a great help, but I have still 
> some problems. How to make the image transparent for the areas of paper 
> which are ripped off around the edges (advice of Slime)?

Actually, I was thinking more of having the edges be part of the
isosurface, eliminating need for a transparency mask...I'm sure
some creatively applied noise to the perimeter would do the trick?

But if you want a transparency mask, example code would be

#declare Tex0    =texture{pigment{image_map{gif "parchment.gif"}}}
#declare Tex1    =texture{pigment{rgbt 1}}
#declare ParchTex=texture{image_pattern{gif "ParchmentMask.gif"} 
texture_map{[0 Tex0][1 Tex1]}}


-- 
Tim Cook
http://home.bellsouth.net/p/PWP-empyrean

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