[Unity3d]控制物体的旋转以及缩放

Code：

using UnityEngine; using System.Collections;  public class DragModel : MonoBehaviour { 	 	 	private float x = 0.0f; 	private float y = 0.0f; 	 	private float xSpeed = 200.0f; 	private float ySpeed = 200.0f; 	 	private float zSpeed = 40f; 	 	private float normalDistence = 0; 	 	private float minDistence = 0; 	private float maxDistence = 10; 	  	void Update ()  	{ 		 		if(Input.GetMouseButton(1)) 		{ 			x=Input.GetAxis("Mouse X") *xSpeed; 			print(Input.GetAxis("Mouse X")); 			y=Input.GetAxis("Mouse Y") *ySpeed; 			 			transform.Rotate(Vector3.up * -x *Time.deltaTime,Space.World); 			transform.Rotate(Vector3.right * y *Time.deltaTime,Space.World); 			 		} 		 		 		else if(Input.GetAxis("Mouse ScrollWheel")!=0) 		{ 			float ga = Input.GetAxis("Mouse ScrollWheel"); 			if(transform.position.z > minDistence && transform.position.z<maxDistence||transform.position.z<=minDistence && ga<0||transform.position.z>=maxDistence && ga>0) 			{ 				transform.Translate(Vector3.forward*-Input.GetAxis("Mouse ScrollWheel")*zSpeed*Time.deltaTime,Space.World);	 			} 			 		} 	} } 

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