Sven Littkowski <jam### [at] yahoocom> wrote:
> Uhmmm, then how do I take off the red and blue channel in Photoshop
> (keeping only the green channel)? Never done before, either. :-)
>
No, no, you don't need to do it in Photoshop. It's done easily and directly in
your POV-Ray scene, using what is called 'dot notation.' This is explained in
the documentation, although I can't remember exactly where. (In the v3.62
documentation, it was at  3.2.1.4.3  Operators)


Here's the line of code I used in your scene...

#declare TheLandscape = object
{
 HF_Cylinder(function { Fn_1(x,y*1.7,z).gray }  (etc.)

Just substitute  .red  or  .green  or  .blue,  instead of .gray

Simple, eh?  ;-)

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