Here's my try at rendering Mr. Dahlstrom's crater function which uses a
spline. I haven't changed anything about it yet except to apply a psuedo
curved surface over the whole thing so I could get a asteroid look instead
of flat plane. This is only a heightfield but the crater function has a
sphere added to make the image used for the HF. I really like these craters
so thanks, Johannes, from me too.

Just a thought here, you (anybody) might want to add your name and possibly
e-mail to your scripts before posting them. I had already forgotten who made
it so I looked it up again and added your name to my file here. I don't
always do that either though, depends on whether I'm thinking of it at the
time or not.

--
Farewell,
Bob

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