Txemi Jendrix wrote:
>> with the trick from Gilles: function(x,y,z){min(1,max(y,0))}
> Could you explain in detail the trick from Gilles, or is it in his
> website?.

  It consist on simply using this function instead "gradient y", because 
it's like the bottom half of a gradient y, and this avoids the upper part 
of the gradient showing on the top of the object. Very useful...

-- 
Jaime Vives Piqueres

La Persistencia de la Ignorancia
http://www.ignorancia.org

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