去掉obi，使用自写绳索

Assets/Obi/Samples/Common/SampleResources/Scripts/ObjectDragger.cs

@@ -1,25 +0,0 @@
-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;
-        }
-
-    }
- }