Draging a Cube with UnityEngine.EventSystems

probably ot the best way to do it but this works
hopefully someone else will be helped by the attached script

using UnityEngine;
using System.Collections;
using UnityEngine.EventSystems;

/*
* 3D project
* Create a cube
* Create an empty gameobject and attach an eventsystem to the empty object, add Standalone input module
* Add a Physics Raycaster to the main camera
* Add this scrip to the cube
*
* Now you can drag the cube in the x and y directons.
*
* Add touch input to the eventsystem and it works on ios and android.
*
* */

public class Dragg : MonoBehaviour,IBeginDragHandler,IDragHandler,IEndDragHandler,IPointerClickHandler,IPointerEnterHandler,IPointerExitHandler
{

float dx;
float dy;
Vector3 newPos;

MeshRenderer mesh;

Color col;
Color startCol;


void Start ()
{
newPos = Vector3.zero;

mesh = GetComponent<MeshRenderer> ();
startCol = mesh.material.color;
col = Color.blue;
}

void Update ()
{

}

public void OnPointerEnter (PointerEventData eventData)
{
mesh.material.color = col;
}

public void OnPointerExit (PointerEventData eventData)
{
if (eventData.dragging)
{
return;
}
mesh.material.color = startCol;
}

public void OnBeginDrag (PointerEventData eventData)
{
dx = eventData.pointerPressRaycast.worldPosition.x - transform.position.x;
dy = eventData.pointerPressRaycast.worldPosition.y - transform.position.y;
}

public void OnDrag (PointerEventData eventData)
{
newPos.x = eventData.pointerCurrentRaycast.worldPosition.x - dx;
newPos.y = eventData.pointerCurrentRaycast.worldPosition.y - dy;
if (eventData.pointerCurrentRaycast.worldPosition.x == 0 || eventData.pointerCurrentRaycast.worldPosition.y == 0)
{
newPos.x = eventData.delta.x;
newPos.y = eventData.delta.y;

transform.Translate (newPos * Time.deltaTime);
return;
}
transform.position = newPos;
}

public void OnEndDrag (PointerEventData eventData)
{
Debug.Log ("OnEndDrag");
}

public void OnPointerClick (PointerEventData eventData)
{

Debug.Log ("OnPointerClick");
}
}