particle plotting possible? 2005-04-24 - By admin@(protected)
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Hello,
Here is a very quick solution to your reversing problem, just tried it and
it works, maybe not all that kosher though. But just simulate and cache the
particles, invert the numbers on the files using a batch re-namer and
simulate>create>particles>from file. Then add a new P-Type and you can do
what you like and also specify a new output. When using a renamer make sure
it doesn't mind that XSI doesn't pad numbers on the sim files (no leading
0's).
Hope it works,
Fabian
-- --Original Message-- --
From: owner-xsi@(protected) [mailto:owner-xsi@(protected)] On Behalf Of
Vince Fortin
Sent: 19 April 2005 05:09
To: XSI@(protected)
Subject: Re: particle plotting possible?
Hi Matt, sorry for the delay!
It's been some time now since I've tried that and honestly I'm not
sure I can guide you precisely but it's worth giving it a try:
Cache your particles, load them with the particle player
(Create>Particle>From File). That creates an independant particle
cloud without the simulation operator. (very cool, for more info about
that check out the sim doc)
Then you have to create a clip to the mixer and, from memory, I think
I did that by storing an action. It could have been a shape clip but I
doubt it because it would most probably have led to crazy results due
to the dying & newborn indexes.
Anyways once it's in there you've reached your goal.
I wish I could test it while writing this but I know I've done it in
the past. The idea came from a discussion we had on this list so you
might wanna search the archives.
I think things would be much easier it we had keyframing access to
XSI's global time variable. I mean, unless I'm missing something,
that's the whole point of the particle player: reading, duplicating,
warping & offsetting in time particle systems without the pain.
Hope this helps Matt, keep us posted...
Vincent
On 4/18/05, Matt Morris <matt@(protected)> wrote:
> Hi Vince,
> I actually have no idea what you're talking about concerning the particle
> player, but it sounds like exactly what I was looking for! I don't suppose
> you would care to elaborate a little? The job is finished and the clients
> are happy which is the main thing, but I'd prefer not to put myself
through
> that much pain again if poss :)
> matt
>
> -- --Original Message-- --
> From: owner-xsi@(protected) [mailto:owner-xsi@(protected)]On Behalf
> Of Vince Fortin
> Sent: 16 April 2005 17:36
> To: XSI@(protected)
> Subject: Re: particle plotting possible?
>
> You can also create mixer clips with the cache via the particle player.
>
> On 4/15/05, peterb <peter_b@(protected)> wrote:
> >
> > > Hey Eric, congrats! What are you doing on the list, go out and party
> man!
> > >
> > > I'm kind of getting there with the old constrain objects to particles,
> > plot
> > > objects, remove constraints etc and then mirror f-curves
> >
> > if its at all usefull for you:
> > you can select the particles (select the cloud, go to tag point mode,
tag
> > the particles) and plot their curves.
> > no messing about with attaching objects to particles, which is way to
slow
> > to be fun.
> > Mind that when they die, and new particles are generated, the particle
ID
> > gets recycled so this messes up the plotted curves! So this works best
> with
> > clouds that generate loads of particles in the beginning and then stop
> > generating.
> >
> > You can then with a simple "for i = 1 to x" loop path-constrain objects
to
> > the curves with tangency and all.
> > And by using the point count of the curve, you know how many frames are
> > needed to animate from 0 to 100% on the curve, and you can script
placing
> > those keyframes...
> > (havent got the script I made once for this at hand, but it was very
> simple
> > in the end)
> >
> >
> > - the cloud has to
> > > explode out, slow down, freeze and reverse back in once the camera has
> > > rotated around it so not quite as simple as it could be, but doable.
> I'll
> > > carry on in my lo-fi way, just had to stay a few extra hours than
> needed!
> > >
> > > Cheers
> > > Matt
> > >
> > > -- --Original Message-- --
> > > From: owner-xsi@(protected) [mailto:owner-xsi@(protected)]On
Behalf
> > > Of Eric Lampi
> > > Sent: 16 April 2005 01:46
> > > To: XSI@(protected)
> > > Subject: Re: particle plotting possible?
> > >
> > >
> > > Oops. That was supposed to go to Matt, not Lyn.
> > > Psyop is 5 years old today... I've had a few glasses
> > > of wine. 8)
> > >
> > > I found that just opening the f-curve editor, and
> > > using the "flip in x" function for all of your
> > > animated elements is perfect for this sort of thing.
> > > Animate backwards! The fun part is discussing how you
> > > need to change your animation, thinking about it
> > > backwards and explaining it forwards makes me feel
> > > like I am having a seizure.
> > >
> > > Not as unpleasant a sensation as you may initially
> > > think.
> > >
> > > E
> > >
> > >
> > > --- Matt Morris <matt@(protected)> wrote:
> > > > Hi all,
> > > >
> > > > please help, I'd love to go home now but I really
> > > > need to figure out a way
> > > > to plot out a particle sim and be able to reverse it
> > > > - is this possible with
> > > > mixer clips somehow?
> > > >
> > > > I can't find a way to plot the particles atm except
> > > > to constrain objects to
> > > > them and plot those... would like to avoid that if
> > > > at all poss, any
> > > > suggestions really, really, really appreciated!
> > > >
> > > > ta,
> > > > Matt
> > > >
> > > > P.S. RTFM and searched the net, can't find anything
> > > > useful...
> > > >
> > >
> > > Freelance 3-D Animator, F/X Artist, Particle Man
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