Bugs74 wrote :
> Is this pure pov-code?

Yes. The object and the texture are generated with POV-Ray.


Simon de Vet wrote :
> 
> Very nice...
> 
> All I would reccomend is a lessening of the normal in the texture, and maybe a more
> uniform colour..
> 
> Asteroids do not look like they are made of a lump of granite, or other volcanic
> rock, but more of a light, uniform grey, from so much dust on the surface.
> 
> This would also bring out the details of the blob surface.
 
For my first test-rendering, I didn't use any normal perturbation. And you're
right, this bring out the details of the blob surface (especially in a animation
of a rotating asteroid I made). But, in this case, the asteroid looks like a
simple stone.

I will try to increase the details on the blob.

If someone has a good, soft asteroid texture...

It could be interesting to simulate dust on the surface.

> BTW, any chance of making something to export to the .blb files? (These are
> supported by Moray, and I think it's a pretty straightforward text format....)

Why not? I'm not a moray-specialist, but many people use this modeler. If
someone describes me the .blb format, I'll see what I can do.



> Apparently, you used soft shadows. I think that due to lack of atmosphere, the
> shadows are always dead sharp as it is on the moon ( I went up there lately).
> My ever-present question : How long did it take to render 300 blobs ?

I use soft shadows because a round object with normal perturbation looks bad
with a basic shadow: try rendering a simple sphere with and without normal
perturbation and you will understand me.

But I'm agree with you: I would be more satisfied if the shadows were sharp.

The rendering is extremely fast for 1 asteroid: 1 asteroid = 1 blob.
This blob is made with 930 components (spheres).

On my PII300: parsing: 1-2s
              rendering: 2mn without AA
                         1-2h with AA (it's much more faster without normal)


But, when I render a large number of asteroid (for an asteroid field scene I'm
making), the parse-time is extremely long: 30,40 mn (I tried more Asteroids, but
after 50mn, I stopped).

And this is *the* problem.
I can't really decrease the number of components:
for the body, under 300 components, it looks more like a big potato than an
asteroid.

The solution: I must convert my blob object into a mesh of triangles.
But I don't know how to do that...



PS: Excuse me for my poor English...  :-)
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