﻿using UnityEngine;
using System.Collections;

namespace Obi.Samples
{
    public class ObjectDragger : MonoBehaviour
    {

        private Vector3 screenPoint;
        private Vector3 offset;

        void OnMouseDown()
        {
            screenPoint = Camera.main.WorldToScreenPoint(gameObject.transform.position);
            offset = gameObject.transform.position - Camera.main.ScreenToWorldPoint(new Vector3(Input.mousePosition.x, Input.mousePosition.y, screenPoint.z));
        }

        void OnMouseDrag()
        {
            Vector3 curScreenPoint = new Vector3(Input.mousePosition.x, Input.mousePosition.y, screenPoint.z);
            transform.position = Camera.main.ScreenToWorldPoint(curScreenPoint) + offset;
        }

    }
 }