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Change value when position reaches certain value
Hello,
I want Opacity to change the value from 100 to 50 when the Shape Layer position is around [90, 90] and [110, 110]. I wrote this expression on opacity
x = transform.position[0]; y = transform.position[1];
a = thisComp.layer("Shape Layer 1").transform.position[0]; b = thisComp.layer("Shape Layer 1").transform.position[1];
z = x + y; c = a + b;
if(z == c){
50;
} else {
100;
}//Comp size = 200*200
//x and y value = [100, 100]
//a and b value = [100, 100]
in this, the Opacity is changing exactly at the value [100, 100] but I wanted to change it when a and b value is within 90 to 110
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3 Replies
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// something like this: p = thisComp.layer("Shape Layer 1").transform.position;
if ( (p[0]>=90 && p[0]<=110) || (p[1]>=90 && p[1]<=110) ) {
o = 50;
} else {
o = 100;
}
o; -
Instead of using
==
you’ll need to use
>= or <=
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Alternatively, (if you would look in a circle of radius 10px around [100,100] instead of inside of a box from 90,90 to 110,100):
p = thisComp.layer("Shape Layer 1").transform.position;
o = length(p,[100,100]) < 10 ? 50 : 100;
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