using UnityEngine;
using System;
using AX.TrackRecord;
using AX.MessageSystem;

public class MouseFollowRotation : MonoBehaviour {
    public static MouseFollowRotation Instance;

	public Transform target;			
	public float xSpeed=200, ySpeed=200, mSpeed=35;
	public float yMinLimit=-40, yMaxLimit=90;
	public float distance=100, minDistance=5, maxDistance=400;
    public float distanceSize = 1, mindistanceSize = 10, maxdistanceSize = 100;

	//bool needDamping = false;
	public bool needDamping =true; 
	public float damping = 5.0f;
	
	public float x = 0.0f;
	public float y = 0.0f;
    public float Top= 2;
    public bool EnableMouseScrollwhell = true;
    protected const float PRECISION = 0.000001f;
    public static bool RMouseDownWithMove = false, RMouseDownHadMove=false;
    public static Vector3 cur=Vector3.zero,pre=new Vector3(1,0,0);
    private GameObject UIRoot;
    public GameObject TheChangeView;

    private CameraAttribute camAttribute;

    private float oldDis;
    private float nowDis;
    private int scales;//缩放次数
    public CameraAttribute CameraAttri
    {
        set
        {
            camAttribute = new CameraAttribute();
            camAttribute = value;
            enabled = false;
            target.localPosition = camAttribute.CameraTargetPos;
            x = camAttribute.x;
            y = camAttribute.y;

            oldDis = distance;//*******
            distance = camAttribute.distance;
            enabled = true;

            nowDis = distance;//****
            ScaleObjInfo(oldDis, nowDis);//*****

        }
        get
        {
            camAttribute = new CameraAttribute();
            camAttribute.CameraTargetPos = target.localPosition;
            camAttribute.x = x;
            camAttribute.y = y;
            camAttribute.distance = distance;
            TrackRecordHelpClass.Set_Pos_Rot_Sca_Record(transform, ref camAttribute.trans);
            return camAttribute;
        }
    }

	public void SetTarget( GameObject go )	
	{
		target = go.transform;
	}
    void Awake()
    {
        if (Instance == null)
        {
            Instance = this;
        }
    }
	void Start () {
		Vector3 angles = transform.eulerAngles;
    	x = angles.y;
        y = angles.x; 
        //t1 = DateTime.Now;
        //t2 = DateTime.Now;
        UIRoot = GameObject.Find("UI Root");
        yMinLimit =- 10;
        MessageDispatcher.AddListener("TabChangeView", tabChangeView);

        oldDis = distance;

        MessageDispatcher.AddListener("CAMERA_FOCUS_CAROBJ", CameraFocusCarObj);
    }
    void OnDestroy()
    {
        MessageDispatcher.RemoveListener("TabChangeView", tabChangeView);

        MessageDispatcher.RemoveListener("CAMERA_FOCUS_CAROBJ", CameraFocusCarObj);
    }

    /// <summary>
    /// 摄像机跟随聚焦车辆
    /// </summary>
    /// <param name="obj"></param>
    private void CameraFocusCarObj(IMessage obj)
    {
        oldDis = distance;

        var data = (CameraFocusData)obj.Data;

        target.position = new Vector3(data.obj.transform.position.x, target.position.y, data.obj.transform.position.z);

        distance = data.distance;
        x = data.x;
        y = data.y;

        nowDis = distance;
        ScaleObjInfo(oldDis, nowDis);
    }

    public int Index =1;
    public enum View : int
    {
         ziyouview=1,
         dingshiview=2,
         threeview=3
    }
    private View theview = View.ziyouview;
    public void tabChangeView(IMessage mes)
    {
        Index++;

        if (LineamentEvent.gameobj != null && LineamentEvent.gameobj.name.Contains("xiaofangyuan"))
        {
            oldDis = distance;
            Camera.main.orthographic = false;
            
            theview = View.threeview;
            if (!LoadManager.Instance.IsPlayBacking)
            {
                target.parent = LineamentEvent.gameobj.transform;
                target.transform.localPosition = new Vector3(0, 4.36f, 0);
            }
            distance = 15.5f;
            //MessageDispatcher.SendMessage("Operatinghints", (object)"第三人称视角");
            Index = 0;

            nowDis = distance;
            ScaleObjInfo(oldDis, nowDis);

            return;
        }
        if (Index == 1)
        {
            theview = View.ziyouview;
            target.parent = null;
            //MessageDispatcher.SendMessage("Operatinghints", (object)"自由视角");
            Camera.main.orthographic = false;
            x = 117f;
            y = 36f;
        }
        else if (Index == 2)
        {
            theview = View.dingshiview;
            target.parent = null;
            //MessageDispatcher.SendMessage("Operatinghints", (object)"顶视图");
            Camera.main.orthographic = true;
            Camera.main.orthographicSize = 150;

        }
        else if (Index == 3)
        {
            if (LineamentEvent.gameobj != null && LineamentEvent.gameobj.name.Contains("xiaofangyuan"))
            {
                oldDis = distance;

                theview = View.threeview;
                if (!LoadManager.Instance.IsPlayBacking)
                {
                    target.parent = LineamentEvent.gameobj.transform;
                    target.transform.localPosition = new Vector3(0, 4.36f, 0);
                    distance = 15.5f;
                }
                //MessageDispatcher.SendMessage("Operatinghints", (object)"第三人称视角");
                Index = 0;
                Camera.main.orthographic = false;
                nowDis = distance;
                ScaleObjInfo(oldDis, nowDis);
            }
            else
            {
                theview = View.ziyouview;
                target.parent = null;
                //MessageDispatcher.SendMessage("Operatinghints", (object)"自由视角");
                Index = 1;
                x = 117f;
                y = 36f;
                Camera.main.orthographic = false;
            }
            
        }

    }
    //DateTime t1, t2;
    public  int Pos=1;

    bool isUseFixTop = true;
	void LateUpdate () 
	{
       if (Input.GetMouseButtonDown(1))
        {
            pre = Input.mousePosition;
        }
        if (Input.GetMouseButtonUp(1))
        {
            cur = Input.mousePosition;
            if (Vector3.Distance(cur, pre) < 3f)
            {             
              MessageDispatcher.SendMessage("ResettingButton", (object)this.name);
            }
        }

       

        if (target) 
	    {
            oldDis = distance;



            if (theview ==View.threeview || theview == View.ziyouview)
            {

                if (Input.GetMouseButton(1))
                {
                    x += Input.GetAxis("Mouse X") * xSpeed * 0.02f;
                    y -= Input.GetAxis("Mouse Y") * ySpeed * 0.02f;

                    y = ClampAngle(y, yMinLimit, yMaxLimit);

                }
                if (EnableMouseScrollwhell)
                {
                    distance -= Input.GetAxis("Mouse ScrollWheel") * mSpeed;
                }
               

                distance = Mathf.Clamp(distance, minDistance, maxDistance);
                //MessageDispatcher.SendMessage("ScaleObjInfo");

                if (isUseFixTop)
                {
                    Top = fixTop(distance);
                }
                //if (Input.GetKeyDown(KeyCode.Space))
                //{
                //    isUseFixTop = !isUseFixTop;
                //}
                Quaternion rotation = Quaternion.Euler(y, x, 0.0f);
                Vector3 disVector = new Vector3(0.0f, Top, -distance);
                Vector3 position = rotation * disVector * Pos + target.position;
                if (needDamping)
                {
                    transform.rotation = Quaternion.Lerp(transform.rotation, rotation, Time.deltaTime * damping);
                    transform.position = Vector3.Lerp(transform.position, position, Time.deltaTime * damping);
                }
                else
                {
                    transform.rotation = rotation;
                    transform.position = position;
                }
            }
            else if (theview == View.dingshiview)
            {
                x = 90;
                y = 90;

                if (Input.GetAxis("Mouse ScrollWheel") > 0)
                {
                    if (Camera.main.orthographicSize <= 8)
                    {
                        distanceSize = 5;
                        Camera.main.orthographicSize = 8;
                        return;
                    }
                    Camera.main.orthographicSize -= 8;

                }
                else if (Input.GetAxis("Mouse ScrollWheel") < 0)
                {                
                    if (Camera.main.orthographicSize >= 200)
                    {
                        distanceSize = 100;
                        Camera.main.orthographicSize = 200;
                        return;
                    }

                    Camera.main.orthographicSize += 8;
                }
                if (isUseFixTop)
                {
                    Top = fixTop(distance);
                }

                Quaternion rotation = Quaternion.Euler(y, x, 0.0f);
                Vector3 disVector = new Vector3(0.0f, Top, -distance);
                Vector3 position = rotation * disVector * Pos + target.position;
                if (needDamping)
                {
                    transform.rotation = Quaternion.Lerp(transform.rotation, rotation, Time.deltaTime * damping);
                    transform.position = Vector3.Lerp(transform.position, position, Time.deltaTime * damping);
                }
                else
                {
                    transform.rotation = rotation;
                    transform.position = position;
                }
            }

            nowDis = distance;
            ScaleObjInfo(oldDis,nowDis);
        }
	}

    private void ScaleObjInfo(float old, float now)
    {
        if (old != now)
        {
            scales = (int)((now - old) / (mSpeed / 10));
            MessageDispatcher.SendMessage("ScaleObjInfo",(object)scales);
        }
    }

    void forBF() {

		distance=1;
	}
	
	static float ClampAngle (float angle, float min, float max) 
	{
	if (angle < -360)
		angle += 360;
	if (angle > 360)
		angle -= 360;
	return Mathf.Clamp (angle, min, max);
	}

    float fixTop(float distance)
    {
        float fixedTop = 0;
        if (distance >= 5 && distance <= 25)
        {
            fixedTop = (distance - 25)*3 / 20;
        }
        else if(distance>=25){
            fixedTop = (distance - 25) * 8 / 45;
        }
        return fixedTop;
    }
    void Update()
    {
        //if (Input.GetKeyDown(KeyCode.Escape))
        //{
        //    if (MySceneManager.GetActiveScene().name.Equals("1"))//处理城市综合体
        //    {
        //        distance = 100;
        //        x = 337.4315f;
        //        y = 24.44321f;
        //        Top = 13.33333f;

        //        //camAttribute.CameraTargetPos = new Vector3(72.4f, 0, -57.71f);
        //        Transform Trager = GameObject.Find("target").transform;
        //        Trager.transform.localPosition = new Vector3(72.4f, 0, -57.71f);
        //        TrackRecordHelpClass.RecordEseCameraPos(Trager.gameObject);
        //    }
        //    else if (MySceneManager.GetActiveScene().name.Equals("3"))
        //    {

        //        Transform Trager = GameObject.Find("target").transform;
        //        distance = 100;
        //        x = 246.0187f;
        //        y = 24.41299f;
        //        Top = 13.33333f;
        //        Trager.transform.localPosition = new Vector3(-13.1f, 0, 19.5f);
        //        TrackRecordHelpClass.RecordEseCameraPos(Trager.gameObject);
        //    }
        //    else if (MySceneManager.GetActiveScene().name.Equals("7"))
        //    {
        //        Transform Trager = GameObject.Find("target").transform;
        //        distance = 201f;
        //        x = 361f;
        //        y = 6.199997f;
        //        Top = 2f;
        //        Trager.transform.localPosition = new Vector3(-268.6f, 0, 33f);
        //        TrackRecordHelpClass.RecordEseCameraPos(Trager.gameObject);
        //    }


        //}

    }

}