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"Lutz-Peter Hooge" <lpv### [at] gmx de> wrote in message
news:MPG.16787994d47543659896c6@news.povray.org...
> In article <3c0e58e2$1@news.povray.org>, bde### [at] cflrrcom says...
>
> > Energy is conserved, as it is taken
> > from other objects. Some things slow down and other things speed up.
>
> Yep, in reality, but this can't be the case here, because in this
> particle system, the particles themselves doesn't influence each
> other....
Ah, I didn't read that in the previous posts. I assumed that they did
inter-react. If not, you are correct, they either have too high an initial
velocity or he has a problem.
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Rune wrote:
>
> I'm not sure I like what I hear. Are you implying that my particle system
> may not be good enough for NASA to use?
>
It might interest you that NASA once had serious problems with exactly
this problem, but i don't know the precise details, i just heard it
somewhere.
'drift' of the results is a common problem with simulation of such systems
so no need to feel bad about it. ;-)
Christoph
--
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other
things on: http://www.schunter.etc.tu-bs.de/~chris/
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Lutz-Peter Hooge wrote:
>
> I think, they would escape the system immediately if they had sufficient
> energy. I maybe wrong though.
>
Not necessarily, in a 3 body system they can collide with one of the
masses even if the speed is very high.
Christoph
--
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other
things on: http://www.schunter.etc.tu-bs.de/~chris/
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In article <3C0E5F60.E0C56986@gmx.de>, chr### [at] gmxde says...
> Not necessarily, in a 3 body system they can collide with one of the
> masses even if the speed is very high.
Thats even possible with a two-body-system:
o---> <-O
:-)
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Lutz-Peter Hooge wrote:
>
> Thats even possible with a two-body-system:
>
> o---> <-O
>
Yes, but this is one special case, in a 3 body system there are various
situations that can lead to a collision.
Christoph
--
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other
things on: http://www.schunter.etc.tu-bs.de/~chris/
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Sigh. If only all pov particle systems could do this, the world(s) would be a
better place... Reminds me of a program I had years ago that would simulate a
comet passing by the sun.
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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"Mark James Lewin" <m_j### [at] yahoocomau> wrote in message
news:3C0E8B64.1860CEB5@yahoo.com.au...
> Sigh. If only all pov particle systems could do this, the world(s) would
be a
> better place... Reminds me of a program I had years ago that would
simulate a
> comet passing by the sun.
>
> MJL
Back when I was going through university for engineering, we had to write a
program for a calculus course that calculated the movement of one planet
around another using some sort of series (I can't quite remember). I
thought I was pretty slick writing one in VB with a nice GUI, graphics and
laser printouts, I should've done it in POV.
-tgq
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"Rune" <run### [at] mobilixnetdk> wrote in message
news:3c0e4d03@news.povray.org...
> "Nekar Xenos" wrote:
> > Cool!
>
> Thanks!
>
Almost looks like Bueharia ...*hint, hint*
--
- Nekar
http://nekar_xenos.tripod.com/metanoia/
---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.298 / Virus Database: 161 - Release Date: 2001/11/13
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Its hypnotic :-/ and I feel dissapointed(sp?) that after managing to
follow a particle - it ends - too soon :-(
Alf
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"Alf Peake" wrote:
> Its hypnotic :-/ and I feel dissapointed(sp?) that after
> managing to follow a particle - it ends - too soon :-(
Actually I feel/felt the same way, but I had to end the animation at some
point...
Rune
--
3D images and anims, include files, tutorials and more:
Rune's World: http://rsj.mobilixnet.dk (updated Nov 5)
POV-Ray Users: http://rsj.mobilixnet.dk/povrayusers/
POV-Ray Webring: http://webring.povray.co.uk
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