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You could make a real pile of powder with trace if you have the memory
for it. All you'd really need to do is drop your particles at random
according to a distribution that made them prefer to fall in the centre
of the pile, and make sure you make them small enough that you can't see
that they haven't settled down in a realistic way.
I imagine someone will be able to come up with a more elegant solution
with texturing or isosurfaces though...
"Andrew Coppin" <orp### [at] btinternet com> wrote in message
news:3d9c76a7@news.povray.org...
> Does anyone out there have any bright ideas about how to make a pile
of
> powder? I can make a pile shape, but how do you make it look
"powdery"? I'm
> looking for something amorphus, like flour.
>
> So far, the best thing I can come up with is an isosurface featuring
the
> basic shape x^2 + y^2 - z (is that a parabola or a hyperbola? I always
get
> those confused!) plus a little bit of f_wrinkles(x, y, z), which works
> suprisingly well (with a fairly matt finish{} block). Can anyone else
do
> better? (My isosurface requires max_gradient 60, which isn't too bad I
> guess...)
>
> Oh, and later in the scene I might need some crystalline powder -
hopefully
> that should be easier... (Any ideas folks?)
>
> Thanks!
> Andrew.
>
>
>
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