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Simple if/else statement
I’m having problems with if/else statements. (never done them before)
I want to turn on/off layers based on a sliders value. I have 7 layers and want only 1 layer visible at a time. When the null slides from 1-7 i need the appropriate layer to turn on and all others off (no fades, hard cut). My expression below unfortunately doesn’t round number to an integer either.
I’ve tried variations based around this:
null = thisComp.layer("Null: Controller").effect("LayerID")("Slider")if (null = 1){
[100];
}else{ [0]; }
any help is appreciated. thanks.
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4 Replies
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Something like this should work:
slider = thisComp.layer(“Null: Controller”).effect(“LayerID”)(“Slider”);
Math.round(slider) == index ? 100 : 0Dan
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Hmmm, when i paste this into the opacity expression nothing happens. Not clear what your expression is doing otherwise i’d try my best to fix it.
Do i need the full 0 to 100 range or just 1 to 7?
Thanks dan.
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Just set the slider value to the index (the layer’s number in the layer stack in the timeline) of the layer with the expression. Any other value should make the layer invisible.
Dan
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Thats great. Not sure what i overlooked but it works now.
thanks
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