[Unity3d]旋转拖动物体

效果图：

代码：

using UnityEngine; using System.Collections;  public class DragModel : MonoBehaviour { 	 	 	private float x = 0.0f; 	private float y = 0.0f; 	 	private float xSpeed = 800.0f; 	private float ySpeed = 800.0f; 	 	private float zSpeed = 160f; 	 	private float minDistence = -3; 	private float maxDistence = 15; 	  	void Update ()  	{ 		 		if(Input.GetMouseButton(0)) 		{ 			x=Input.GetAxis("Mouse X") *xSpeed;  			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*-ga*zSpeed*Time.deltaTime,Space.World);	 			} 		} 	} }