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random hold periods
i’m trying to create an expression that periodically turns the opacity of a layer to 100% but then holds that opacity value at 100 for a period of say, 10 frames of time. here’s what i’ve got so far…
x=random(50);
if(x>45){
value=100;
}else{
value=0;
}obviously that expression produces some chaotic results as a new random number for ‘x’ is created at every frame. so how can i create the hold? if anybody has an example or link to another post here that would be awesome!
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3 Replies
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see if this works
wiggle(1,100)
it worked pretty well for me, kinda random and it held the 100% opacity for a good amount of time.
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hey thanks for the feedback! i guess i was looking for more of a square wav with some pulse width modulation to achieve a slow ‘geiger counter’ esque pulse light effect. so the layer triggers ‘on’ only every so often and stays on for a slightly varying period of time(the goal is between 1-2 seconds)…
maybe an expression slider in null layer with a posterizeTime(3) or something attached to the if/else statement in the opacity of the other layer would do the trick?
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hehehe, I don’t even know what posterizeTime does, I’m just really starting with expressions. But what I think you are trying to do is force the solid to hold 100 opacity for a random time between 1-2 seconds? You could use an if/else to tell it when to turn “on” but how to use a random number generator to tell how long to stay “on” then turn “off” would be beyond me.
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