Particle Playground Wall properties

[Julian Sixx]

Hi
[duffbeer911] “btw I don’t have particular although I would be curious to know if it would help me out.”
Yes,Particular does the trick.It has got a bouncing option

[Roland R. kahlenberg]

There are options for velocity and kinetic friction in the Persistent Property Mapper. Those should help you somewhat. Have you tried to see if Foam will do the same thing for you?

Good Luck
Roland Kahlenberg
broadcastGEMs
customizable animated backdrops with Adobe After Effects project files

[Michael Duff]

hi guys, thanks for the suggestions although I still haven’t had much luck…. foam just didn;t seem to create the physics that I wanted,,,, and I couldn’t get PPM to do exacly what I wanted. I think maybe I will have to do it in real 3D as I don’t have particular.

Anyways, here is a simplified render of my scene – you see the particles just never die!

https://www.bearcage.com.au/duff/particletest.mov

Thanks for the help

[Roland R. kahlenberg]

Here’s the deal: Use a Solid and apply Render->Ramp with its default value. use this as your Persistent Property Mapper.

For Particle Playground, use the Kinetic Friction property to affect your particles. Set the Maximum value to 0.01 (no keyframes required). For the Minimum value, set an initial keyframe value of 0.01 at about the 2-second mark. At a later point in time, perhaps 10 seconds layer, set a value of 0.1

Becareful though, your balls will die off this way. Sorry, I couldn’t resist.

Cheers
Roland Kahlenberg
broadcastGEMs
customizable animated backdrops with Adobe After Effects project files

[Michael Duff]

https://www.bearcage.com.au/duff/particletest2.mov

thank you very much! this is doing the job….although my balls do drop off at the end 😉 a bit of timeremapping should dodge me around that

…… and you’ve opened me up to a whole new world of persistent property mapper

[Roland R. kahlenberg]

[duffbeer911] “although my balls do drop off at the end 😉 a bit of timeremapping should dodge me around that”

You can get around that by adding keyframes for the Max value. Set the first keyframe to .01 as prescribed earlier. Change it to a Hold Keyframe. Then, at the same time as the last keyframe for the Minimum Value, set the value for Max to a large negative value, eg. -50. This should stop the balls from falling off.

I had a look at your movie and it looks decent but a little cartoony. Things seem to move too much – perhaps that’s what you want. You should be able to achieve a more natural feel to the movements by adjusting the timing of your keyframes – just a thought.

You may also want to create another property map for Scale X to give the balls a squashed look as they hit the Wall. Just create Solid with Ramp applied. This time, the gradient has to be mostly black at the top and the gray areas to only slightly encroach into the Wall area – the bottom should be white.

For the ScaleX property, Set Minimum Value to 1 and Maximum to 2, or slightly larger – to taste. If you’re not sure of how to create muliple property mappers then use the Ephemereal Property Mapper. Check out my COW Tutorial entitled, Fun in Particle Playland. It covers the creation of multiple mappers for either the Persistent Property Mapper or the Ephemereal Property Mapper.

Have Fun!Roland Kahlenberg
broadcastGEMs
customizable animated backdrops with Adobe After Effects project files

[Michael Duff]

thanks for the tips….. the balls are actually going to be “hundreds and thousands”, you know, those little round sprinkles that go on cakes. so the squash factor isn’t too important – but I’m sure I will use that technique in future

thanks again!