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Opacity of Layer 1 driven by Position of Layer 2
THis might be a no brainer, but I can’t seem to find a solution of my own.
Okay, I have a column of ‘buttons’ that I have pushing forward in z-space. Their forward movement is being driven by an expression that affects tthe each button layer based on the proximity of a null.
I also have a text layer for every button. each text layer is parented to the position value of it’s respective button layer.
What i want is acheive is a set up so the text’s opacity shifts from 0 to 100 as it’s parent button layer is offset in z space, then back down to 0 as the button returns to it’s original position.
Put another way: when button’s Z value is 0, then text’s opacity is 0,
but when button’s value is 30 (or possibly 60), then text’s opacity is 100.I hope this makes sense. Any help or ideas would be awesome. Thanks!
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3 Replies
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[johnnyfix] “Put another way: when button’s Z value is 0, then text’s opacity is 0,
but when button’s value is 30 (or possibly 60), then text’s opacity is 100.”I would do:
x = thisComp.layer(“name”).transform.position[2]
linear (x, 0, 30, 0, 100)So, as the value of “x” changes from 0 to 30, the opacity changes from 0 to 100 in a linear interpolation.
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Thank you so much.
This works perfectly.
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You are welcome!
There are some variations of it:
x = thisComp.layer(“name”).transform.position[2]
ease (x, 0, 30, 0, 100)x = thisComp.layer(“name”).transform.position[2]
easeIn (x, 0, 30, 0, 100)x = thisComp.layer(“name”).transform.position[2]
easeOut (x, 0, 30, 0, 100)In ease, when the value of x is 0, the velocity is 0 and when the value of x is 30, the velocity is 0 also.
In easeIn, when the value of x is 30, the velocity is 0 and in easeOut, when the value of x is 0 the velocity is 0.
Lord Scales
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