Mike Williams <nos### [at] econymdemoncouk> wrote:
> If you want to use it on an object that doesn't lie within that region,
> then you need to consider what colour you want to have for points
> outside that region and code it accordingly.

Thanks for the answer!

What's odd is that you can't scale the pigment either. For instance, the
following produces errors.

sphere {0,1
  pigment{
   function {sqrt(pow(x,2) + pow(z,2)) / cos(asin(abs(y)))}
   pigment_map
   {
    [0 color rgb 0]
    [1 color rgb <0,1,0,>]
   }
 scale y/2
 translate y
  }
}

Shouldn't the function be evaluated to completion before the pigment gets
scaled?

-Mike

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