Unity 鼠标拖动场景内的物体

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using UnityEngine;using System.Collections;public class mouse_Drag : MonoBehaviour {    public Camera mCamera;    public float deth = 10f;    //鼠标放到物体上    void OnMouseEnter()    {        this.transform.localScale = new Vector3(1.3f,1.3f,1.3f);    }    //鼠标在物体上移除的时候    void OnMouseExit()    {        this.transform.localScale = new Vector3(1.0f, 1.0f, 1.0f);    }    //鼠标放在物体上一直触发    void OnMouseOver()    {        this.transform.Rotate(Vector3.up,45 * Time.deltaTime,Space.Self);    }    void OnMouseDrag()    {        //moveObject();        moveObject_fixdepth();    }    void moveObject()    {        //把鼠标点坐标转换为世界坐标，并发出一条射线        Ray r = mCamera.ScreenPointToRay(Input.mousePosition);        //采集射线打到的物体信息        RaycastHit hit;        //设置射线长度为1000        if(Physics.Raycast(r,out hit, 1000f,1))        {            this.transform.position = new Vector3(hit.point.x,hit.point.y,hit.point.z);            Debug.DrawLine(r.origin,hit.point,Color.red);        }    }    void moveObject_fixdepth()    {        Vector3 mouseScreen = Input.mousePosition;        mouseScreen.z = deth;        Vector3 mouseWorld = mCamera.ScreenToWorldPoint(mouseScreen);        this.transform.position = mouseWorld;    }}
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