# Look At object with Falloff

Look At object with Falloff allows you to rotate items to look at a specified object and additionally specify a falloff range so that only items within a certain radius of the object are affected. To use it.

- Use the
**Effects > lookAt**parameter to pick the look at target from the scene. - Use the
**Effects > falloffDistance**parameter to specify the falloff for the look at effect.

## Effect Script:

vector v = Lookat.Position - fpItem.Position; fpItem.rotation.z = easein(length(v),falloffDistance,0,fpItem.rotation.z, -atan2(v.x, v.y));

You can find this Effect within the Forest Effects Library.

## This Effect Uses:

### Parameters

**falloffDistance**

Type: Scene Units**lookAt**

Type: Object

### Attributes

**fpItem.position**

Minimum Z rotation as set in the Transform rollout.**fpItem.rotation.z**

Rotation of Forest Item on Z axis in local coordinates.

### Functions

**easeIn(x,x1,x2,y1,y2)**

Returns an ease-in interpolation between y1 and y2. Returns y1 when x < x1.**length(v)**

The length of v.**atan2(x,y)**

Returns the principal value of the arc tangent of y/x, expressed in radians