[PD] The Party at the Center of the Universe

[megalegoland at yahoo.fr]

Date: Sun, 4 Dec 2005 17:12:55 -0000
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>
>If you're into physical particle systems, Cyrille & Damien Henry have a
>mass/spring plugin, which was called PMPD when I saw their performance.  
>Else, GridFlow could do things like that too, but it can also do density
>models, which are more like "we have the space and then there's matter in
>it" whereas particle systems are more like "we have matter and then it's
>somewhere in space".
>PMPD  would be a good tool for exploring gravity - but you would have to  explore the escape velocity scenario, where links (springs) are broken  if an object attains a certain angular momentum, and a different  (repulsive) mechanism comes into effect (and what about dark  matter/energy or as it should be termed, the foo fudge factor (FooFF)).
>  
>  Also - how fast is your computer? They normally use supercomputers to  do this, I think you may have problems on a standard machine. Modelling  aspects of the universe such as doppler shift would be easy, but it's a  problem of scale...perhaps you ahould start with a solar system?
>  
>  Best,
>  Ed
>  
>
 Well I am working on PMPD and particulary on the morphing exemple for a live show in two weeks, my computer (athlon 2600+, 333Mhz bus freq, 512 RAM, and Nvidia 64Mo) can handle the 125 spheres with no problems, it's slowing down if I use text with 'round' fonts and more than two  letters, So I could make an emulation of the largest planets (from mercury to pluto-charon) with our sun  without problems, but the solar system has more than four hundred thousands planets if we are counting, centaurs, troyans, comets, ect...there is an encyclopedia of solar planets I don't remember the adress yet. So, a cluster of several computers (maybe with pure-dyne) would be needed to make an accurate model, indeed...

patco