View Full Version : GREAT trick for ParticleFX!
05-23-2003, 05:21 PM
Did you know that once you save your .pfx you can tweak the playback speed to basically interpolate your precalculated particles?!
What Im saying is, you can basically take an emitter, blast the particles at high speed, high gravity, ...then calculate only about 100 frames...save pfx, then set the playback speed to 10%, now scrub the timeline past 100 frames! LW will figure out the rest...no need to calculate 1000 frames for a ton of particles...(normally takes forever and sometimes crashes lw!)
...the trick is now figuring out how to tweak .pfx to move really fast in short timeframes, then slow them down to look good!
05-23-2003, 05:22 PM
kick ass! keep us informed.:thumbsup:
05-23-2003, 05:25 PM
Thats it Poli... :) Nothing else to inform! Just try it out...Its a timesaver!
...well one thing, the particles do seem to wobble a tiny bit, but I dont think its too much of a problem...yet! :)
...wonder if theres a trick to fix that?
Anyone know who to ask?
05-23-2003, 05:38 PM
Can you animate this playback speed ?
05-23-2003, 05:48 PM
05-23-2003, 05:49 PM
Animate? You mean control with an envelope? No, thats another thread! :)
But you can set its playback speed...so what Im doing is recording superfast particles in a short amount of frames...then playing them back really slow!
..its a shortcut to not having to calculate alot of frames!
but again, the wobbles may cause some problems, but if its a scene with camera movement, MB, etc...then it looks fine....
...Im playing with the Resolution to see if that can help out the wobbles, but its not....I guess the wobbles are coming from the way its interpolating....kinda like morphing a tube bending...how it wont work if its missing the middle morphs...so the movements may not be curved correctly...
..so im thinking that at least a 200% increase when recording and a 50% playback will give great results...still enough info to interpolate, but 1/2 the calculation time...and of course 400%/25% may still look good...and so on and so on and then she told 2 friends, and they told two friends....
05-23-2003, 06:31 PM
that's some great piece of advice :scream:
I know that there was some controllability with PFX files, but that method never crossed my mind! Good CALL :D
05-23-2003, 07:26 PM
It appears that the only way to keep the wobbles down is to have linear particle movement...so curved paths dont work too well...thats too bad...
Im hoping someone will chime in with a solution though!
01-15-2006, 06:00 AM
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