1 using System.Collections;
 2 using System.Collections.Generic;
 3 using UnityEngine;
 4 using UnityEngine.UI;
 5 using UnityEngine.EventSystems;
 6
 7 //脚本挂在Modelshow GameObject下
 8 public class ModelViewControl : MonoBehaviour {
 9     private bool isClick = false;
10     private Vector3 startPos;       //点下开始位置
11     private Vector3 endPos;         //点下终点位置
12     private float Move_X;           //x方向上的移动距离
13     private float Move_Y;           //Y方向上的移动距离
14
15     //回调间距
16     float interval = 0.01f;
17     float clickBeginTime = 0.0f;
18     //模型引用
19     private Transform model;    //模型根节点
20     void Start () {
21         model = transform;
22
23     }
24     // Update is called once per frame
25     void Update () {
26 #if UNITY_STANDALONE_WIN
27         if (Input.GetMouseButtonDown(0))
28 #elif UNITY_ANDROID
29         if(Input.touchCount > 0 && !isClick)
30 #endif
31         {
32             isClick = true;
33 #if UNITY_STANDALONE_WIN
34             startPos = Input.mousePosition;
35 #elif UNITY_ANDROID
36             startPos = Input.touches[0].position;
37 #endif
38             clickBeginTime = Time.time;
39         }
40 #if UNITY_STANDALONE_WIN
41         if (Input.GetMouseButtonUp(0))
42 #elif UNITY_ANDROID
43         if (Input.touchCount == 0 && isClick)
44 #endif
45         {
46             isClick = false;
47         }
48         if (isClick && (Time.time - clickBeginTime) > interval)
49         {
50 #if UNITY_STANDALONE_WIN
51             endPos = Input.mousePosition;
52 #elif UNITY_ANDROID
53             endPos = Input.touches[0].position;
54 #endif
55             if ((endPos - startPos).magnitude < 5)
56             {
57                 return;
58             }
59             if(Mathf.Abs(endPos.x - startPos.x) < 5)
60             {
61                 endPos.x = startPos.x;
62             }
63             if (Mathf.Abs(endPos.y - startPos.y) < 5)
64             {
65                 endPos.y = startPos.y;
66             }
67             RotateModel(startPos,endPos);
68             startPos = endPos;
69         }
70     }
71     void RotateModel(Vector3 startPos , Vector3 endPos)
72     {
73         Vector3 direction = endPos - startPos;
74         Vector3 world_axis = Vector3.Cross(direction, Vector3.forward);
75         model.Rotate(world_axis.normalized, direction.magnitude * 0.3f, Space.World);
76     }
77 }