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BazC
04-14-2007, 07:59 AM
I just know this is a RTFM question but I can't figure it out. I'm trying to get particles to be emitted radially on the x-z plane (actually neutrons emitted from a reactor core) I can only get them to travel in one direction.

Is there a simple way to do this or do I have to "fake" it by using multiple emitters?

Skinner3D
04-14-2007, 08:16 AM
I am not sure if it is the right way, but I would create a disk, make it invisible and then set it to emit from object points.
:)

BazC
04-14-2007, 08:27 AM
Thanks for the reply! I tried that though. Unless I add velocity in the Motion tab (say 10m/s in x and z) the particles stay stuck to the surface. If I add the vector info they all travel in the same direction, in this case 45degrees between x and z. :(

dballesg
04-14-2007, 08:46 AM
Hi,

Make the Generator Size on Y axiz = 0 m.

Then add as much Explosion you want on the Motion Tab. No need of Velocity on any axis for that.

Hope it helps.

Best regards,
David

BazC
04-14-2007, 09:07 AM
Ah! Thanks a lot, that's much closer to what I was after! :D

dballesg
04-14-2007, 11:02 AM
Your welcome! :)

MonroePoteet
04-14-2007, 03:59 PM
You might also have luck by setting the Y size of the emitter to very small, adding a high Z velocity (say 100m) and rotating the emitter quickly, say through 14411 degrees of heading in a 300-frame animation. Each particle emitted goes "straight", but as the emitter rotates, you get a disk.

mTp

BazC
04-15-2007, 07:45 AM
Great idea, I'll try that too though I think it might be difficult to avoid getting a spiral of particles? Worth playing with though, thanks!

MonroePoteet
04-15-2007, 11:08 AM
If you choose the rotation speed well, you avoid the spiral effect. The value I provided (14411) is not evenly divisible by either 300 (frames) or 360 (degrees). Not sure if it's prime or not, but a large prime number would be best. If you avoid a common factor, you won't see a recognizable pattern.

mTp

BazC
04-15-2007, 12:09 PM
If you choose the rotation speed well, you avoid the spiral effect. The value I provided (14411) is not evenly divisible by either 300 (frames) or 360 (degrees). Not sure if it's prime or not, but a large prime number would be best. If you avoid a common factor, you won't see a recognizable pattern.

mTp

Excellent, thanks a lot! :D