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Expression for (Trapcode Particular) 3 color ramp/gradient
Hello, I’ve recorded some music and transformed the audio levels to 3 value controllers (of base, mid and high tones). I want to link not only the particles/second to the controllers, but also the color, with the ‘Color over Life’ function. However, I don’t know the expression to control the 3 color values and link them to the controllers, so that a base tone will create a different color than a mid or high tone. Right now I just duplicated the particular layer 2 times, gave each of them different colors and linked each of those to a different controller. However, I would like to see the effect of having just one layer and controlling the color ramp with an expression. Any suggestion(s) on how that can be done?
Many thanks!
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3 Replies
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They are a special kind of keyframe whose value cannot be manipulated with expressions.
You can however set a few different keyframes, and use an expression with valueAtTime() to dynamically choose/interpolate between those keys.
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Alternatively, you could just keep the gradient from White to Black, and use a TriTone effect where you can effect the 3 colors with expressions.
The result of thosee expression will have to be an array of length 4:
[r,g,b,a];but alpha will be ignored
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Many thanks Filip, I’ll look further into your suggestion:)
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