360全景图片

  1  public float moveSpeed = 1;//物体旋转速度    
  2     public GameObject target;
  3 
  4     private Vector2 oldPosition;
  5     private Vector2 oldPosition1;
  6     private Vector2 oldPosition2;
  7 
  8 
  9     private float distance = 0;
 10     private bool flag = false;
 11     //摄像头的位置  
 12     private float x = 0f;
 13     private float y = 0f;
 14     //左右滑动移动速度  
 15     public float xSpeed = 250f;
 16     public float ySpeed = 120f;
 17     //缩放限制系数  
 18     public float yMinLimit = -360;
 19     public float yMaxLimit = 360;
 20     //是否旋转  
 21     private bool isRotate = true;
 22     //计数器  
 23     private float count = 0;
 24 
 25     public static CamCtrl _instance;
 26     //初始化游戏信息设置  
 27     void Start()
 28     {
 29         _instance = this;
 30         Vector3 angles = transform.eulerAngles;
 31         x = angles.y;
 32         y = angles.x;
 33         if (GetComponent<Rigidbody>())
 34             GetComponent<Rigidbody>().freezeRotation = true;
 35     }
 36 
 37 
 38     void Update()
 39     {
 40 
 41         if (isRotate)
 42         {
 43 
 44             target.transform.Rotate(Vector3.down, Time.deltaTime * moveSpeed, Space.World);
 45 
 46         }
 47         if (!isRotate)
 48         {
 49             count += Time.deltaTime;
 50             if (count > 5)
 51             {
 52                 count = 0;
 53                 isRotate = true;
 54             }
 55         }
 56 
 57         //触摸类型为移动触摸  
 58         if (Input.GetMouseButton(0))
 59         {
 60             //根据触摸点计算X与Y位置  
 61             x += Input.GetAxis("Mouse X") * xSpeed * Time.deltaTime;
 62             y -= Input.GetAxis("Mouse Y") * ySpeed * Time.deltaTime;
 63             isRotate = false;
 64         }
 65         //判断鼠标滑轮是否输入  
 66         //float temp = Input.GetAxis("Mouse ScrollWheel");
 67         //if (temp != 0)
 68         //{
 69         //    if (temp > 0)
 70         //    {
 71         //        // 这里的数据是根据我项目中的模型而调节的，大家可以自己任意修改  
 72         //        if (distance > -15)
 73         //        {
 74         //            distance -= 0.5f;
 75         //        }
 76         //    }
 77         //    if (temp < 0)
 78         //    {
 79         //        // 这里的数据是根据我项目中的模型而调节的，大家可以自己任意修改  
 80         //        if (distance < 20)
 81         //        {
 82         //            distance += 0.5f;
 83         //        }
 84         //    }
 85         //}
 86 
 87     }
 88 
 89     //计算距离，判断放大还是缩小。放大返回true，缩小返回false    
 90     bool IsEnlarge(Vector2 oP1, Vector2 oP2, Vector2 nP1, Vector2 nP2)
 91     {
 92         //old distance    
 93         float oldDistance = Mathf.Sqrt((oP1.x - oP2.x) * (oP1.x - oP2.x) + (oP1.y - oP2.y) * (oP1.y - oP2.y));
 94         //new distance    
 95         float newDistance = Mathf.Sqrt((nP1.x - nP2.x) * (nP1.x - nP2.x) + (nP1.y - nP2.y) * (nP1.y - nP2.y));
 96 
 97         if (oldDistance < newDistance)
 98         {
 99             //zoom+    
100             return true;
101         }
102         else
103         {
104             //zoom-    
105             return false;
106         }
107     }
108 
109     //每帧执行，在Update后    
110     void LateUpdate()
111     {
112         if (target)
113         {
114             //重置摄像机的位置  
115             y = ClampAngle(y, yMinLimit, yMaxLimit);
116             var rotation = Quaternion.Euler(y, x, 0);
117             var position = rotation * (new Vector3(0.0f, 0.0f, -distance)) + target.transform.position;
118 
119             transform.rotation = rotation;
120             transform.position = position;
121         }
122     }
123     float ClampAngle(float angle, float min, float max)
124     {
125         if (angle < -360)
126             angle += 360;
127         if (angle > 360)
128             angle -= 360;
129         return Mathf.Clamp(angle, min, max);
130 
131     }