using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using XRTool.Util;

public class ArrowList : UnitySingleton<ArrowList>
{
    public GameObject arrow;
    public int num = 0;
    void Update()
    {
        //if (Input.GetKey(KeyCode.I))
        //{
        //    Vector3[] v3List = GetCorners(1f);
        //    for (int i = 0; i < v3List.Length; i++)
        //    {
        //        Debug.Log(v3List[i]);
        //    }
        //}
    }

    public void AddArrow(float Valuex, float Valuey)
    {
        if (this.transform.childCount >= 5)
        {
            Destroy(transform.GetChild(0).gameObject);
        }
        ShowArrow(Valuex, Valuey);
    }

    public void ShowArrow(float Valuex, float Valuey)
    {
        if (transform.childCount > 0)
        {
            num++;
            if (num > 9)
            {
                num = 1;
            }
        }
        else
        {
            num = 1;
        }
        GameObject obj = Instantiate(arrow) as GameObject;
        //obj.GetComponentInChildren<Text>().text = Valuex + "," + Valuey;
        obj.transform.position = CameraView.PosChange(Valuex, 1 - Valuey, 1, RemoteRtc.Instance.cam.transform);
        obj.transform.SetParent(this.transform);
        NewJiantou newJiantou = obj.transform.GetComponent<NewJiantou>();
        if (newJiantou)
        {
            newJiantou.Init(num);
        }
        if (TimerMgr.Instance)
        {
            TimerMgr.Instance.CreateTimer(() => { Destroy(obj); }, 60f);
        }
    }

    public void DeleteAll()
    {
        if (transform.childCount > 0)
        {
            for (int i = 0; i < transform.childCount; i++)
            {
                Destroy(transform.GetChild(i).gameObject);
            }
        }
        num = 0;
    }

    public Vector3 PosChange(float a, float b)
    {
        Vector3[] v3List = GetCorners(1f);
        Vector3 posX = Vector3.zero;
        float juliX = Vector3.Distance(v3List[1], v3List[0]);
        Vector3 vector = (v3List[1] - v3List[0]).normalized; //向量单位化
        float rand = juliX * a;//随机距离
        posX = vector * rand; //得到新坐标
        posX += v3List[0];

        Vector3 posY = Vector3.zero;
        float juliY = Vector3.Distance(v3List[2], v3List[0]);
        Vector3 vectorY = (v3List[0] - v3List[2]).normalized; //向量单位化
        float randY = b * juliY;//随机距离
        posY = vectorY * randY; //得到新坐标
        posY += v3List[2];

        return new Vector3(posX.x, posY.y, v3List[0].z);
    }

    Vector3[] GetCorners(float distance)
    {
        Vector3[] corners = new Vector3[4];

        float halfFOV = (RemoteRtc.Instance.cam.fieldOfView * 0.5f) * Mathf.Deg2Rad;
        float aspect = RemoteRtc.Instance.cam.aspect;

        float height = distance * Mathf.Tan(halfFOV);
        float width = height * aspect;

        Transform tx = RemoteRtc.Instance.cam.transform;

        // UpperLeft
        corners[0] = tx.position - (tx.right * width);
        corners[0] += tx.up * height;
        corners[0] += tx.forward * distance;

        // UpperRight
        corners[1] = tx.position + (tx.right * width);
        corners[1] += tx.up * height;
        corners[1] += tx.forward * distance;

        // LowerLeft
        corners[2] = tx.position - (tx.right * width);
        corners[2] -= tx.up * height;
        corners[2] += tx.forward * distance;

        // LowerRight
        corners[3] = tx.position + (tx.right * width);
        corners[3] -= tx.up * height;
        corners[3] += tx.forward * distance;

        return corners;
    }
}