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expression to double scale based on z position
I’m trying to write an expression for the scale property of several text layers based on there z position. I want each layer’s scale to be 100% when z is 0 or lower and go up to 200% when z is -100.
All of the text layers are parented to a null layer and spaced out on the z and y planes in a ferris wheel type fashion (they are 100 pixels from the null and the null’s z position is 0). When I animate the x rotation of the null, they spin around. The effect would look better if they would scale too.
Anyone know how to do this? Thanks in advance for any help.
–mat
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3 Replies
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I think this is what you want but you need to test it on the wheel. It goes on each layer’s scale.
s = linear(position[2],0,-100,200,100);
[s,s,s] -
Since you have the layers parented to a Null the expression should be:
z = toWorld(anchorPoint)[2];s = linear(z, -100, 0, 200, 100);
[s,s,s];
Apply this to the scale property.
Darby Edelen
Designer
Left Coast Digital
Santa Cruz, CA -
Thanks everyone. The expression works great. I did need to add:
z = toWorld(anchorPoint)[2];
to get it to work right with the null.Thanks again.
–mat
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