Wow, it's really impressive. I had visited this stanford guy's webpage some
time ago, and I'm glad he's updated it with some new really cool videos...
everything there is impressive.

Your smoke looks terrific. I suppose it's a 2D simulation, but it does look
nice.

Congratulations,

Fernando



news:40b7fa2b@news.povray.org...
> Well, it's been a while so I hope this attachment works.  It's just an
mpeg
> attached with KNode so we'll see.
>
> Here's the beginning of an attempt at that Visual Simulation of Smoke
paper
> (graphics.stanford.edu/~fedkiw/papers/stanford2001-01.pdf [I hope I got
> that right - I had to type it in from OS X -- if not, google it!]).  Each
> pixel represents one voxel, so that makes the simulation 100 x 160.  It
has
> vorticity confinement, the semi-lagrangian scheme and a conjugate gradient
> solver.  That last part really isn't as bad as it looks.  Frankly, I only
> vaguely understand the concept, but the algorithm isn't hard to implement.
>
> I still have to do the cubic interpolation, and (of course) add another
> dimension, but so far it at least looks somewhat like smoke.  Oh and I
> suppose incomplete cholesky preconditioning would be a plus too.  The mpeg
> compression made it darker than it should be so the eddies lost a lot of
> detail, but it isn't too bad.  Once I get things working better, I'll post
> the c++ code, but I warn you in advance that it's pretty ugly coming from
> someone who's just proud they figured out how to work objects.
>
> It's sad this is how I spend my summer.  Just a parting thought.
>
>  - Ricky

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