POV-Ray : Newsgroups : povray.binaries.animations : Re: user defined forces test Server Time
19 Jul 2024 19:31:02 EDT (-0400)
  Re: user defined forces test (Message 1 to 2 of 2)  
From: Tim Nikias
Subject: Re: user defined forces test
Date: 11 Mar 2002 16:39:28
Message: <3C8D242E.1F71CB44@gmx.de>
It looks really cool, but I think you should've
made the sphere, in which the action takes place,
a little larger. This would give the particles more
space for movement.

Also, you should put a max-speed on the
particles, I've noticed at least two pacing around
with near-light-speed...

Perhaps you should try a recursion of the system:
Green particles flying towards the red,
Red Particles towards some new blue,
blue towards some even newer white.

That would look pretty interesting, and is actually
not really an exponential algorithm.


--
Tim Nikias
Homepage: http://www.digitaltwilight.de/no_lights/index.html


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From: Mark James Lewin
Subject: Re: user defined forces test
Date: 12 Mar 2002 00:03:35
Message: <3C8D8B3C.803E3F20@yahoo.com.au>
Tim Nikias wrote:

> It looks really cool, but I think you should've
> made the sphere, in which the action takes place,
> a little larger. This would give the particles more
> space for movement.

I suppose. I just didn't want them leaving without permission :-)

> Also, you should put a max-speed on the
> particles,

I dont like to do this because...

> I've noticed at least two pacing around
> with near-light-speed...

in this simulation, that's what they are supposed to do. They probably go too
close to one of the red ones. A better idea would be to have checked if the
velocity was greater than a certain value, and if so, "disintegrate" the particle
(proabably by adding "dust" particles that fade away). The possibilities are
limited to the imagination.

>
>
> Perhaps you should try a recursion of the system:
> Green particles flying towards the red,
> Red Particles towards some new blue,
> blue towards some even newer white.

I like that idea, I might try it.

> That would look pretty interesting, and is actually
> not really an exponential algorithm.

This anim was actually quite fast to parse, because the green ones are only
attracted to the reds... and there is only 5 reds. In the mini solar system anim,
each particle looked at all the others, so if there were more, the cpu crunch
would begin. Exponential algorithm or no, if there are lots of particles, then
it's always slow.

Thanks for the comments.

MJL

--
text{ttf"timrom.ttf"concat(#local O=1;#while(O<7)chr(val(substr(concat(#local Q=
1;#while(Q<7)str(asc(substr("???<?>",Q,1))-56,0,0),#local Q=Q+1;#end""),O,2))),#
local O=O+2;#end"").1,0pigment{rgb 9}translate-<1,.3,-2>} // MJL


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