/**
* Move the camera back or forward in its current angle to a given distance
* from some target, at a given height.
*/
private void CorrectFollowDistance(
Vector2 arrow, Vector2 target, float distance, float height)
{
Vector2 newPos = VectorUtils.Backtrack(arrow, target, distance);
transform.position = VectorUtils.Extrude(newPos, height);
}