"PM 2Ring" <nomail@nomail> wrote:
> After seeing Cassini's recent pictures of some of the icy crater fields of
> Saturn's moons Dione & Tethys, I was inspired to dig up my old crater
> height field generator I wrote on the Amiga to see how it works on Linux.
>
> As you can see from the quick test below, it functions ok (yes, the texture
> looks more like plastic than ice :). I've just improved the way each crater
> is blended into the existing landscape, although I'm still not completely
> happy with the crater generation algorithm.
>
> To be perfectly honest, I can't remember the algebra behind some of the
> parameters.  That's what happens when you don't use enough comments & other
> documentation and you then try to decipher 5 year old code. :) I'll just
> have to sit down & reverse-engineer the geometry...
>
> The crater generator height field output is only 8 bit .pgm, but I'm
> thinking of adding 16 bit & maybe even simple floating point (hdr) output.
>
> If anyone's interested in this crater generator, I'll post the C source &
> Linux binary (in the appropriate area).
>
> PS. The crater heightfield is tileable.


This looks nice. I would suggest a better shape for the out site of the
craters. Not so steep and with a few debris lines. Also not every crater
would be made by direct 90 degree angles. In fact many would be any where
with in the 90 degree from the ground.

Just some opinions.

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