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simulating particles with expressions
I want to generate something akin to a particle fountain but do it without actually using particles (to have more control over the layers themselves). What I want to do is have 100 layers with the same origin point but just add a randomness to their targeted x and y end coordinates whilst maintaining a particular z depth- essentially having the layers all begin at the same origin but end up, say, 100 pixels away but at different and random x,y coordinates. That way if I punch the expression into the layer and then duplicate it I’ll get a fountain effect, no? How can I write the random target expression? Or is this not a simple question?
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4 Replies
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Hmm … not sure how to do the expression, but did you know that you can:
1. drag your images into a comp
2. make the images 1 frame long
3. Sequence the layers so you end up with a movie of your images
4. in another comp, use that movie as the source for your particles, but set to sample random frames from that movie?That way, your images will be the particles, and you’ll get a nice particle behaviour.
I know Particle Playground can do that, but haven’t tried it with Particular or the CC plugins.
Hope that helps,
Steve -
If you want a very nice, expression-based, physics-abiding particle expression, then the god of expressions–Dan Ebberts–put together an excellent tutorial Here which is a 3D Particle Generator.
Hope it helps!
Cheers!
-jeff mullen
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Whoops! Not sure what happened in that above post, well, the tutorial of the 3D particle generator is Here.
Cheers!
-jeff mullen
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Jeff is right, Dan’ tut is exactly what you want. You can sub in your own image layers (psd’s etc) and control many of the parameter’s within the expression. And the best part is it’s 3D so you can do a flythru if you want.
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