The Vector3.InverseLerp method calculates the linear parameter t that produces the interpolant value within a specified range. It is the inverse operation of the Lerp method. This method is useful for determining how far a point pos is between two other points a and b in 3D space.
To use the InverseLerp method, provide the position pos you want to evaluate, the start point a, the end point b, and a boolean clamp to indicate whether the result should be clamped between 0 and 1. The method returns a float representing the parameter t where pos lies between a and b.
Vector3 pointA = new Vector3(0, 0, 0); Vector3 pointB = new Vector3(10, 10, 10); Vector3 position = new Vector3(5, 5, 5); float t = Vector3.InverseLerp(position, pointA, pointB, true); // t will be 0.5, as position is halfway between pointA and pointB.