POV-Ray : Newsgroups : povray.binaries.animations : Flowing particles - take two (144kbu) : Re: Flowing particles - take two (144kbu) Server Time
20 Jul 2024 09:19:27 EDT (-0400)
  Re: Flowing particles - take two (144kbu)  
From: Rick [Kitty5]
Date: 18 Mar 2001 09:42:36
Message: <3ab4c95c@news.povray.org>
> Thanks! It was quite a headache to implement, but it seems to work now.

i can well imagine!

> > does a blobs behavour change acording to its size?
>
> No.
>
> > - ie smaller blobs bounder more and higher than larger fatter
> > blobber blobs?
>
> No, but I don't think it would be correct anyway. Theoretically if there's
a
> large object and a small object with the same "springiness" and the two
> objects hit a surface with equal velocity, they should bounce equally
much,
> shouldn't they?

no, with water there is a sliding scale, large blobs are more likely to
fragment more on impact that very very small droplets witch are more likly
to either bounce almost whole, or simply stick. - this in one of the reasons
that when models are used on films for the obligatoy damn breaking scene it
dosnt look real.

> But anyway, I don't think a particle system can be compared to real water
> that directly. Real water doesn't consist of particles. And when a water
> drop hits a surface it may divide into several smaller drops and generally
> behave in very complicated ways.

i think in may ways it can be compared, and yours with thousands of
incredably small particals should be quite close (then of course we will
want you to add a detergent feature for froth & bubbles)

>
> I hope my particle system will be cool-looking, but it's not supposed to
be
> used by scientists! ;)

well, if its any consolation, one of the great unsolved problems are the
mathematical formulas for motion of fliuds like water, and turbulance in
general (hence the continuing use of wind tunnels and smoke) - skicky fluids
(like syrup) are aparently no problem, but you dont get vortex's in syrup :)

> Do you mean the pseudo motion blur that stretches out the particles in the
> direction of movement? I personally like it, but it can be made stronger
or
> weaker or turned completely off.

yes, could you add real mega pov motion blur?


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