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.
Second, the effect I was looking for is more the solution spider had
given using the rgbt instead of the rgbf.
I will post at binaries.images two cylinders that show the difference.
Again, thank you
Marc
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Marc Schimmler
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