DECEMBER 20, 2002
Inside the Studio Artist Paint Synthesizer
Part 1: An introduction to Time Particles
by David Nagel
Page 3 of 6

4. Switch over to the "Timeline Animation" pane in Studio Artist, and set the length of your movie to whatever you want. (If you're using Time Particles to rotoscope a video, the number of frames will be automatically set by the source movie.)

[an error occurred while processing this directive]5. To animate the strokes, choose File > New Movie Stream > From Main Canvas.



6. Then choose Action > Generate Frames > Run PASeq Animation. When Studio Artist finishes rendering--which should be pretty quick in this case--choose File > Close Stream. You now have a complete QuickTime movie sitting on your hard drive somewhere that contains your animation.



So what made all of this happen? To know this, you have to know what all of the parameters mean in the Time Particles panel.

Shape Track
Now, first of all, the key to the Time Particles feature is its ability to maintain the look of a stroke while also introducing movement into the stroke. We've seen some of this in the examples above, although I included some randomness in my strokes so that they didn't look too "fixed." Here's an example of a more stable brush preset with Time Particles applied.



You can constrain the shape of the strokes in one of two ways. Down at the bottom of the Time particles interface, you'll see and option called "Shape Track." By default, this option is turned off. But you can set it either to tween the initial shape from frame to frame or to maintain the initial shape throughout the animation, as seen in the last example above.



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