Transform.InverseTransformPoint
InverseTransformPoint(position: Vector3): Vector3;
Description

Transforms position from world space to local space. The opposite of Transform.TransformPoint.

Note that the returned position is affected by scale. Use Transform.InverseTransformDirection if you are dealing with directions.
	// Calculate the transform's position relative to the camera.

var cam = Camera.main.transform; var cameraRelative = cam.InverseTransformPoint(transform.position); if (cameraRelative.z > 0) print ("The object is in front of the camera"); else print ("The object is behind the camera");
InverseTransformPoint(x: float, y: float, z: float): Vector3;
Description

Transforms the position x, y, z from world space to local space. The opposite of Transform.TransformPoint.

Note that the returned position is affected by scale. Use Transform.InverseTransformDirection if you are dealing with directions.
	// Calculate the world origin relative to this transform.

relativePoint = transform.InverseTransformPoint(0, 0, 0); if (relativePoint.z > 0) print ("The world origin is in front of this object"); else print ("The world origin is behind of this object");