PhysicsRaycaster.ComputeRayAndDistance

protected function ComputeRayAndDistance(eventData: EventSystems.PointerEventData, out ray: Ray, out distanceToClipPlane: float): void;

protected void ComputeRayAndDistance(EventSystems.PointerEventData eventData, out Ray ray, out float distanceToClipPlane);

Parameters

eventData	The pointer event for which we will cast a ray.
ray	The ray.
distanceToClipPlane	The distance between the near and far clipping planes along the ray.

Returns a ray going from camera through the event position and the distance between the near and far clipping planes along that ray.