Rune wrote:

> It's much more visible now, and looks rather cool!

Thank you!


>
>
> However, I think the repulsion is too weak compared to the attraction. The
> result is that it looks like it is being compressed to a fraction of the
> space it occupies in the start. I get the feeling "hey, where did all the
> particles go?".

You are right. I set my max repulsion too low. When I get a better example, I'll
post it.


>
>
> > I save particle data for each frame so that re-renders
> > are quicker and a re-render of any particular frame
> > on its own is possible.
>
> How much disc space does that take in total?
> (And how many particles and how many frames do you use?)

For that animation, there were 500 particles. Each frame of data took up ~ 32kb.
The animation I sent had 400 frames (from memory. I rendered 500, but the last
100 or so were uneventful), so that's about 12.5 Mb. The way I save my data could
be more efficient, but it works for now. I originally wrote this part of my
system to save time. Not having to recalculate particle interaction cut the
render time down by three quarters. I think this is a good trade-off.

MJL

--
light_source{12*(y-z)rgb 2fade_distance 9fade_power 2area_light x,z,5,5}#macro A
(H,B,R,T)prism{0,1H+4,0u*9,9v*9,0#local I=1;#while(I<H)#local V=asc(substr(B,I,1
))-33;<div(V,10)mod(V,10)>#local I=I+1;#end pigment{red 1}rotate-<90,R>translate
-T}#end A(16"/.@VZno=<PLA89/"0,5*x)A(14",6;MWmhryXN3,"60<15,0,8>)camera{location
25*(y-z)look_at 0}A(8"6hiAG=6"-60,-10*x)box{-99(x+z)*99 pigment{rgb 1}}   // MJL

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