using UnityEngine;
using System.Collections;

public class RadialDragger : MonoBehaviour {

	public GameObject Dragger;
	public Transform Planet;
	public float Distance;

	// Use this for initialization
	void Start () {

	}

	// Update is called once per frame
	void Update () {

		Vector2 MouseInputPos = Input.mousePosition;

		Ray NewRay = Camera.main.ScreenPointToRay(MouseInputPos);
		RaycastHit NewHit = new RaycastHit();
		Planet.transform.collider.Raycast(NewRay,out NewHit,100.0f);

		Vector3 Direction = Planet.transform.position - GetWorldPos(MouseInputPos);
		Debug.DrawRay(Dragger.transform.position, Direction);
		Vector3 targetPosition = GetWorldPos(MouseInputPos) - Planet.position;
		float Ratio = Distance / targetPosition.magnitude;
		targetPosition.Scale( new Vector3(Ratio, Ratio, Ratio));
		Dragger.transform.position = targetPosition + Planet.position;


	}



	    Vector3 GetWorldPos( Vector2 screenPos )
    {
        Camera mainCamera = Camera.main;
        return mainCamera.ScreenToWorldPoint(new Vector3(screenPos.x, screenPos.y, Mathf.Abs(Planet.position.z - mainCamera.transform.position.z)));

    }

}