Marc Schimmler wrote:
> 
> Hi Warp1
> 
> Thank you for your answer!
> 
> I checked your solution and changed it in two ways.
> 
> First a height of 1 for the cylinder leads to the repeating of the
> gradient so that both ends are opaque. By using y*0.999 I avoided this.

play some with the waveforms here. scallop_wave and sine_wave are nice.

> Second, the effect I was looking for is more the solution spider had
> given using the rgbt instead of the rgbf.
> 
//Spider

-- 
#declare life = rand(seed(42))*sqrt(-1);

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