Kalleheikki Kannisto
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COW Coin
Forum Replies Created
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Worked just fine.
Example:
Text: “Typing some text here are we?”
Hold keyframe at 0: Speed 10, Blink Speed 1, Start at 2
Hold keyframes at 10 sec: Speed -10, Start at 14Kalleheikki Kannisto
Senior Graphic Designer -
Yes, with Particular. There seems to be some limit, around 26000 particles, above which the figure doesn’t really change, meaning you can’t get the points closer to each other than this. But it may be possible to handle it by modifying the formula itself.
One important factor is to make sure that most of the velocity and emitter size related settings are at zero so that the particles don’t start flying around.
Kalleheikki Kannisto
Senior Graphic Designer -
Not sure if I’m interpreting this right, but here’s what I got for the light position:
fps = 1/thisComp.frameDuration;
t = Math.floor(fps*time)/fps;
cur_frame = time*fps;
lambda = cur_frame%1*30;
x= 100*Math.exp(-(t-5)*(t-5)*lambda)*Math.cos(10*t);
y = 100*Math.exp(-(t-5)*(t-5)*lambda)*Math.sin(10*t);
z = 20*t;
[x,y,z]With 30000 particles per second and a particle life of one frame, I get something that looks like this (a still from early in the animation). This shape unfurls along time.
Kalleheikki Kannisto
Senior Graphic Designer -
The built-in script “Scale Composition” does most of it.
Rotobrush is a different story as it is resolution-dependent, but maybe it will give you a starting point. Alternately, you may want to generate rotobrush result mattes from your 360 px footage and scale those up to 720 px and use them as mattes to avoid having to redo them. They won’t be as accurate as doing them at the correct resolution, but maybe you can make that work.
Kalleheikki Kannisto
Senior Graphic Designer -
It seem likely you could achieve it with the existing expression by changing (keyframing) the start time and speed so that it would work in reverse. Meaning the speed would be negative and the start time would change to account for completing the write-in part first. It’s too late at night for me to figure out what the start time would have to be to do that, but you should be able to figure that out by experimenting.
Kalleheikki Kannisto
Senior Graphic Designer -
Can you give an example formula that you want to use? Would be easier to sort it out.
Kalleheikki Kannisto
Senior Graphic Designer -
You have to draw the entire shape in one frame, using particles with a life span of one frame and then draw the next stage of the shape in the next frame, etc.
Works just fine in Particular, where I’ve done it many a time. Haven’t tried in Stardust, but should work the same.Kalleheikki Kannisto
Senior Graphic Designer -
Test with Plexus.
Kalleheikki Kannisto
Senior Graphic Designer -
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In After Effects, yes, in Photoshop, not likely.
Kalleheikki Kannisto
Senior Graphic Designer
