Timothy Cook wrote:
> 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]}}
> 

Hai Tim,

Nice not? The edges as part of the isosurface is for the future. Thank 
for the help, also to the others.

Greetings...
Wijnand Nijs

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