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X.S.N.R.G
10-27-2002, 01:02 AM
I can't remember is maya particle can collide with each other or not.. :(
I really with the could :)

slice56
10-27-2002, 02:12 AM
unfortunately in maya, particles cant collide, but if it is necessary, then use max, b/c max's particles do collide i believe.

Jozvex
10-27-2002, 04:01 AM
There are a few different ways to "make" them collide though.

One being my Interparticle Collisions tutorial on Highend3D.com

Judge Drury
10-27-2002, 03:30 PM
Originally posted by slice56
unfortunately in maya, particles cant collide...

Real Maya users should know that just because it's not in a menu, it doesn't mean it can't be done!:p

Try this:

*Create the two particle objects

*Create a newton field (just for the sake of this example), and connect it (dynamic relationships editor) to the first particle object. Set the field to a negative number (to repel, not attract the object).

*Select the field, then the second particle object, and go >particles >use selected as source of field.

*Play the animation - you should see the first particle object be affected as the second particles pass through them, assuming that's what they're doing.

*To make it work both ways, repeat the process, but with the other particle object.

Don't forget to play with the particle's attenuation, and all the attributes of the field to get the result you want.;)

artifish
10-27-2002, 11:45 PM
Well, REAL REAL ( ;-) ) Maya users should know particles are just mass points (1-dimensional objects) moved by forces. They've got no volume and hence no area which could collide. Every approach presented is just a workaround for simulating something that looks like a collision, but is no real collision. But this doesn't mean that it doesn't do the job. There are two intercollision fields for download at highend3D's plugin section (dynamics). One by Mikael Sundell and one by Eduardo Schmidek, they both simulate what collisions would loke like if the particles were spheres (check out the example movies on their websites).

Cheers, Carsten

Jozvex
10-28-2002, 12:41 PM
Artfish you are my particle hero!

I can't believe how I lived without Brainbugs before!

slice56
10-28-2002, 02:38 PM
see, i told you they dont collide ;) *shakes head knowing he was right*

artifish
10-28-2002, 04:20 PM
hehe, thanks :) glad you like it ..
if you come up with an interesting animation you've done with it, don't hesitate to send me a link, i'd like to take a look at it!

cheers, carsten

Jozvex
10-29-2002, 06:02 AM
Could you (if you have time) please upgrade it to work with Maya 4.5?

Because I can't use it anymore...

artifish
10-30-2002, 10:37 PM
ok, just posted a small update (including a 4.5 recompiled version) on highend3d > maya > plugins > dynamics

cheers, carsten

Jozvex
10-30-2002, 11:43 PM
awesome! thanks!

TRi-14
10-31-2002, 04:40 AM
to make particles colide with each other, simple apply a radius field in the scene, select the particle object and go to Use Lectected as Emitter, then change the radius field to Per Verticy (or something to that effect in the channel box for the radius field) and adjust the maximum distance on the radius field to the size of the particles, and when they meet, they will be pushed out of each others fields thus creating the effects of particles collising with particles...

if you need exact instructions please e-mail me :)

TRi-14

Jozvex
10-31-2002, 08:35 AM
Just for clarification he means use a Radial Field.

And I recommend you change the Radial Type to 1 instead of zero because the collisions can look a little 'squishy' otherwise.

And lowering the particles conserve value to around .98 can stop 'stacked' particles from jittering as much.

:)

TRi-14
10-31-2002, 09:21 PM
yes, thank you Jozvex.. hehe sorry about that. i was oh so tierd last night when i posted.. my apologies...

TRi-14

X.S.N.R.G
11-07-2002, 01:25 PM
Thanks for all the help everyone. I am going to highend right now to DL the plug-ins I dont want t get MAX ;) You people are awsome here. I love this sight.

Gentle Fury
11-08-2002, 01:19 AM
Originally posted by artifish
Well, REAL REAL ( ;-) ) Maya users should know particles are just mass points (1-dimensional objects) moved by forces. They've got no volume and hence no area which could collide. Every approach presented is just a workaround for simulating something that looks like a collision, but is no real collision. But this doesn't mean that it doesn't do the job. There are two intercollision fields for download at highend3D's plugin section (dynamics). One by Mikael Sundell and one by Eduardo Schmidek, they both simulate what collisions would loke like if the particles were spheres (check out the example movies on their websites).

Cheers, Carsten

ummmmmm, you realize that nothing is actually touching in a computer right?? Spheres dont actually collide in a computer.....remember? so if there is a program that simulates interparticle collision, then how is that not real???? Its all fake when it comes down to it, you are merely using a seperate program to tell maya how to react!!

I think you've been working with this stuff too much if you equate the difference between particle collison and reg collision as one is real and the other isnt ;)


Happy Rendering!

Jozvex
11-08-2002, 02:21 AM
ok then,

'Maya's' 'particles' have no fake volume, so they can't fakely collide.

artifish
11-08-2002, 11:09 AM
gentle fury:
Sorry, I should've made myself more clear: Of course do I know, that there actually no "real" collision in Maya and that everything just comes down to math (That's why I use the term "simulation"). When I was refering to "real collision", I meant a "simulated collision that looks like a similar collision in the real world". The radial field approach does not simulate real world physics collision, these intercollisionFileds I mentioned do ( to a certain degree - the problem of more than 2 objects colliding in not one easily solved in simulation).
But let's stop the nitpicking - as long as it looks good, I'm fine with it ;)

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