I just got these images back from the PVR survey spacecraft which is
passing through the hypothetical asteroid belt in the Ersatz solar system.
14 minutes to render at 800x600 with SETI@home running in the background.

Cheers!

Chip Shults
My robotics, space and CGI web page - http://home.cfl.rr.com/aichip

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Attachments:
Download 'Pvr2002a.jpg' (52 KB)

Preview of image 'Pvr2002a.jpg'

Wooow, I love asteroids!  :o)  I once made an asteriod myself that looked
quite nice but I lost the code.. Is this an isosurface?  Rendertime?  I
don't know how you coded this... It looks so good..... :o)

Regards,
Hugo

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Sir Charles W. Shults III wrote:

>     I just got these images back from the PVR survey spacecraft which is
> passing through the hypothetical asteroid belt in the Ersatz solar system.
> 14 minutes to render at 800x600 with SETI@home running in the background.
> 


Very Nice.  I like the smaller asteroid locked in orbit around it. 
(Alright, I know it's an isosurface artifact, but it's still cool!)

Two nitpics, though:

1 - There's some clipping happening in the lower right.
2 - It should have craters.

-- 
/*Francois Labreque*/#local a=x+y;#local b=x+a;#local c=a+b;#macro P(F//
/*    flabreque    */L)polygon{5,F,F+z,L+z,L,F pigment{rgb 9}}#end union
/*        @        */{P(0,a)P(a,b)P(b,c)P(2*a,2*b)P(2*b,b+c)P(b+c,<2,3>)
/*   videotron.ca  */}camera{location<6,1.25,-6>look_at a orthographic}

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Hmm, actually, it's boundaries are well clear of its container, so no
clipping is occurring.  I think you may be referring to the edge you see?
That is just a hard shadow.  I used a negative ambient value to sharpen the
shadows up, and I think that may be what you are seeing, a sharp edged
shadow.  I could re-render and get that clarified pretty easily.
    Also, I will be sharpening up the cratering on this, because I found
what appears to be a good algorithm for them.  This is indeed an isosurface-
one where I combined three selected mathematical functions and some
turbulence.
    The little iso artifact can be "iso-lated" and animated in a slow orbit
around the parent body with a little judicious clipping and boxing, and if I
go so far as to animate this, that is what I will do.  Next, I need to get a
factory on it and a mining pit.

Cheers!

Chip Shults
My robotics, space and CGI web page - http://home.cfl.rr.com/aichip

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Render time 14 minutes on a 1.2GHz Pentium, but with programs running in
the background.  If I trim out all the other tasks, it might render in 12 or
less.  This is a three function isosurface and easy to produce.  You will
need to select your functions and scale factors carefully to get good
results, but this was a fun one to do.
    After a little more play- er, "work", I will post the source code.

Cheers!

Chip Shults
My robotics, space and CGI web page - http://home.cfl.rr.com/aichip

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That is a very nice rock. At only 14 minutes for a big one like that, you
could use several smaller ones in an outside scene.

 -Shay

Sir Charles W. Shults III <aic### [at] cflrrcom> wrote in message
news:3c997f6c@news.povray.org...

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Thanks.  I will post the code shortly.

Cheers!

Chip Shults
My robotics, space and CGI web page - http://home.cfl.rr.com/aichip

#macro B(a,b)sphere{<a,b,13>.5pigment{agate}finish{phong.3}}#end#macro N(a,c)
#local k=1;#while(k<7)#if(mod(c,2))B(k,a)B(-k,-a)#end#local c=int(c/2);#local
k=k+1;#end#end light_source{0rgb 1}N(1,61)N(0,37)N(-1,55)N(-2,4)N(-3,4)N(3,1)

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