React to Layer Distance

Scale, rotate, or change opacity based on distance from another layer.

Expression Code

// React to Layer Distance
// Apply to Scale, Rotation, or Opacity
// Set the target layer name below

target = thisComp.layer("Controller"); // Change to your layer name
maxDist = 500;   // Maximum reaction distance
minVal = 50;     // Value when far away
maxVal = 100;    // Value when close

myPos = thisLayer.toWorld(anchorPoint);
targetPos = target.toWorld(target.anchorPoint);
d = length(myPos, targetPos);

t = linear(d, 0, maxDist, maxVal, minVal);
[t, t]; // For Scale — use just t for Rotation or Opacity

Create a null or shape layer called "Controller". Apply this to Scale, Rotation, or Opacity. Move the controller around — nearby layers react to its proximity.

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