Returns a PolarRay based on a line and origin.
If origin is omitted, the origin is taken to be the 'a' point of the line. Otherwise, the origin value is used to determine the 'offset' of the ray.
origin
Optional
Returns a PolarRay based on a line and origin.
If
originis omitted, the origin is taken to be the 'a' point of the line. Otherwise, the origin value is used to determine the 'offset' of the ray.