y position within a range of two values

[Dan Ebberts]

You didn’t describe what kind of up and down motion you’re looking for, but this will oscillate a layer’s y value between 300 and 700:

maxY = 700;
minY = 300;
f = 1;

y = linear(Math.cos(time*f*Math.PI*2),-1,1,maxY,minY);
[value[0],y]

Dan

[Aqeel Arruhaili]

wonderful but how about if i want to use wiggle with that and how could i make it slower

[Dan Ebberts]

This should work:

maxY = 700;
minY = 300;
f = .5;

y = linear((wiggle(f,1)-value)[1],-1,1,maxY,minY);
[value[0],y]

Modify f to adjust the speed.

Dan

[Aqeel Arruhaili]

Thank you so much

[Aqeel Arruhaili]

what if i want to show the wiggled value in a text layer but with a different range between 40 to (-90).

[Dan Ebberts]

I’m not sure if it does what you’re asking, but try this:

maxY = 40;
minY = -90;
f = .5;

p = transform.position;
y = linear((p.wiggle(f,1)-p.value)[1],-1,1,maxY,minY);

Dan

[Aqeel Arruhaili]

If I have an object that wiggles up and down using your expression within 300 and 700 and I wanted to use the y position in a text layer to display a changing number on screen but i need it to be within the range of 40 to -90 instead of 300 to 700.

[Dan Ebberts]

Try this:

y = thisComp.layer(“wiggle layer”).transform.position[1];
linear(y,300,700,40,-90)

Dan

[Aqeel Arruhaili]

i used the expression but nothing changed. the same numbers between 300 and 700 appears on screen.

[Aqeel Arruhaili]

Oh sorry it was my fault…it works wonderfully…thanks alot