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Wiggle, but never go past set minimum.
I put a wiggle on a Shape Layer’s Trim Path End parameter that’s at 50%. I only want to wiggle values greater than 50 (I never want it to go below 50).
I tried this:
n=wiggle(1,10);
value + nBut it always gives me 100%. What am I doing wrong?
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11 Replies
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You could try something like this:
amp = 5;
w = wiggle(1,amp) – value;
value + amp + wDan
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I didn’t need to make it so complicated. This does the same thing:
amp = 5;
wiggle(1,amp) + amp;Dan
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Fantastic!
Similarly, how can I tell a wiggle to stay between a min and max value?
Traditionally, if I want to wiggle between 50~75%, I’d set the starting value at the midpoint (75-50)÷2+50 then set the amp value to (75-50)÷2. Math!
It would be handy to directly set min and max values, but have the normal controls over wiggle (freq,amp,octave,seed). This is of course for 1-dimensional parameters like rotation and sliders.
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that’s pretty much how you’d do it… you could simplify the math a bit, like this:
min=50;
max=75;
freq=5;
oct=5;
min+Math.abs(wiggle(freq,max-min,oct))Kevin Camp
Art Director
KCPQ, KZJO & KRCW -
This doesn’t seem to be working correctly on a Shape Layer’s Trim Paths which goes from 0~100%.
Your expression pegs the parameter at 100%. It never goes under.
I removed the first ‘min’ from last line and just used this which got me closer:
Math.abs(wiggle(freq,max-min,oct))I set it to wiggle between 54~71, but I’m getting values near 78%.
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trim paths probably needs to be set to 0… wiggle still uses the value of the property.
i’ll take a look when i get a chance.
Kevin Camp
Art Director
KCPQ, KZJO & KRCW -
i’m rendering right now, but if you can, you might try changing the last line to this:
min+Math.abs(wiggle(freq,max-min,oct))-value
Kevin Camp
Art Director
KCPQ, KZJO & KRCW -
nope, that won’t work… i think about it a bit more, but i don’t think we can get around having to set the base value to 0.
Kevin Camp
Art Director
KCPQ, KZJO & KRCW -
You can do it by having the wiggle reference a property that doesn’t get clipped (like rotation):
min = 25;
max = 75;
freq = 1;
amp = (max-min)/2;
w = rotation.wiggle(freq,amp)-rotation;
(min+max)/2 + wDan
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I’m trying your expression to make an object only scale in one axis. But I’m getting “Class number has no property named 0” error
min = 25;
max = 75;
freq = 1;
amp = (max-min)/2;
w = rotation.wiggle(freq,amp)-rotation;
[(min+max)/2 + w[0],value[1]];
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