using UnityEngine;
using System.Collections;
using System.IO;
using System;
using System.Collections.Generic;
using UnityEngine.UI;


public class ImageInfo
{
    public int type;
    public Vector2 pos=Vector2.zero;
    public float width;
    public float height;
}
public class GetImage : MonoBehaviour
{
    [Header("待截图的目标摄像机")]
    public Camera mainCam;
    [Header("是否开始录像")]
    public bool isStartRecord=false;
    public string ImgPath;
    public string TxtPath;
    RenderTexture rt;  //声明一个截图时候用的中间变量 
    Texture2D t2d;
    int num = 0;  //截图计数
    [Header("服务器地址")]
    public string ServerPath;
    [Header("播放图片集的RenderTex")]
    public Image imgPlayer;
    private List<byte[]> imgList = new List<byte[]>();

    public Transform TestObj;

    //public GameObject pl;  //一个调试用的板子

    int width = 512;
    int height = 512;

    void Start()
    {
        t2d = new Texture2D(width, height, TextureFormat.RGB24, false);
        rt = new RenderTexture(width, height,24);
        mainCam.targetTexture = rt;

        //Debug.Log((Vector2)mainCam.WorldToScreenPoint(TestObj.position));

        //float x = mainCam.WorldToViewportPoint(TestObj.position).x;
        
        //float y = mainCam.WorldToViewportPoint(TestObj.position).y;
        //Debug.Log(x+"-"+y);
        //Debug.Log(mainCam.WorldToScreenPoint(TestObj.position).normalized.x);
        //Debug.Log(mainCam.WorldToScreenPoint(TestObj.position).normalized.y);
        //Vector2 view = mainCam.WorldToViewportPoint(TestObj.position) * new Vector2(1920, 1080);
        
        //Debug.Log(view.normalized);
        //Debug.Log(Input.mousePosition);
        //Debug.Log((Vector2)mainCam.WorldToViewportPoint(TestObj.position));

    }

    void Update()
    {
       
        //截图
        if (isStartRecord)
        {
            if (Time.frameCount % 2 == 0)
            {
                CreatImg();
            }

            //CreatImgAndText();
        }
    }

    public void CreatImgAndText()
    {

        List<Car> cars = DriveManager.Instance.carList;

        List<ImageInfo> infos = new List<ImageInfo>();

        for (int i = 0; i < cars.Count; i++)
        {
            //检测是否在屏幕内
            if (IsInScreen(mainCam, cars[i].gameObject.transform.position))
            {
                ImageInfo info = new ImageInfo();
                Vector3 viewPos = mainCam.WorldToViewportPoint(cars[i].gameObject.transform.position);
               //Vector3 viewPos = mainCam.WorldToScreenPoint(cars[i].gameObject.transform.position);
                float x = viewPos.x;
                float y = 1-viewPos.y;
                
                info.pos.x=x;
                info.pos.y = y;
                Debug.Log(x + "-" + y);
                info.type = cars[i].CarType;
                //计算框
                float distance = Vector3.Distance(mainCam.transform.position, cars[i].transform.position);
                float maxDistance = 100;
                distance = Mathf.Clamp(distance, 15, maxDistance);
                float rate = Mathf.SmoothStep(0, 1, 1 - (distance / maxDistance));
                if (rate <= 0.04f)
                {
                    continue;
                }
                //float h = (1 - (viewPos.y * 1080 / 1080)) * 240/1080;
                //float w= (1 - (viewPos.y * 1080 / 1080)) * 195/1920;
                float h = rate * 240 / 1080;
                float w = rate * 195 / 1920;
                info.width = w;
                info.height = h;

                //添加到图片信息队列
                infos.Add(info);

                #region 画线测试
                // Debug.Log(info.type + "-" + info.pos.x + "-" + info.pos.y + "-" + info.width + "-" + info.height);
                //画线,测试用
                //DrawTool.mMouseStart = new Vector2((viewPos.x-w)*Screen.width,(viewPos.y-h)*Screen.height);
                //DrawTool.mMouseEnd = new Vector2((viewPos.x + w) * Screen.width, (viewPos.y + h) * Screen.height);
                //DrawTool.mBDrawMouseRect = true; 
                #endregion

            }
        }

        CreatImg(infos.ToArray());
    }

    private bool IsInScreen(Camera camera, Vector3 targetPos)
    {
        Vector3 viewPos = camera.WorldToViewportPoint(targetPos);
        Vector3 dir = (camera.transform.position - viewPos).normalized;
        float dot = Vector3.Dot(camera.transform.forward, dir);
        return dot > 0 && viewPos.x > 0 && viewPos.x < 1 && viewPos.y > 0 && viewPos.y < 1;
    }


    public void CreatImg()
    {

        //截图到t2d中
        RenderTexture.active = rt;
        t2d.ReadPixels(new Rect(0, 0, rt.width, rt.height), 0, 0);
        t2d.Apply();
        RenderTexture.active = null;

        //将图片保存起来，添加到队列
        byte[] byt = t2d.EncodeToJPG();
        imgList.Add(byt);

        //string imageFilePath = "D:/UnityProject/ChuanGanQi" + "/ " + ImgPath + "/";
        // if (!Directory.Exists(imageFilePath))
        // {
        //     Directory.CreateDirectory(imageFilePath);
        // }
        //File.WriteAllBytes(imageFilePath + num.ToString() + ".jpg", byt);

        ////如有服务器地址上传服务器
        //if (ServerPath != "")
        //{
        //    StartCoroutine(UnLoadImage(byt));
        //}
        Debug.Log("当前截图序号为：" + num.ToString());

        num++;
    }
    public void CreatImg(ImageInfo[] info)
    {
        //截图到t2d中
        RenderTexture.active = rt;
        t2d.ReadPixels(new Rect(0, 0, rt.width, rt.height), 0, 0);
        t2d.Apply();
        RenderTexture.active = null;

        //将图片保存起来
        byte[] byt = t2d.EncodeToJPG();
        imgList.Add(byt);
        string imageFilePath = "D:/UnityProject" + "/ " + ImgPath + "/";
        if (!Directory.Exists(imageFilePath))
        {
            Directory.CreateDirectory(imageFilePath);
        }
        File.WriteAllBytes(imageFilePath + num.ToString() + ".jpg", byt);
        //如有服务器地址上传服务器
        if (ServerPath != "")
        {
            StartCoroutine(UnLoadImage(byt));
        }
        Debug.Log("当前截图序号为：" + num.ToString());
        //添加信息
        string txtFilePath = "D:/UnityProject" + "/ " + TxtPath + "/";
        if (!Directory.Exists(txtFilePath))
        {
            Directory.CreateDirectory(txtFilePath);
        }
       // StreamWriter sr =new StreamWriter(txtFilePath + num.ToString() + ".txt");
        //注入文本信息
        string text = "";
        List<string> strList = new List<string>();
        for (int i = 0; i < info.Length; i++)
        {
            string content = info[i].type + " " + info[i].pos.x.ToString("0.000000") + " " + info[i].pos.y.ToString("0.000000") + " " + info[i].width.ToString("0.000000") + " " + info[i].height.ToString("0.000000");
            
            if (strList.Contains(content))
            {
                continue;
            }
            strList.Add(content);
            text += content+'\n';
        }
        File.WriteAllText(txtFilePath + num.ToString() + ".txt", text);
        //sr.WriteLine(text);
        //sr.Close();
        //sr.Dispose();
        
        num++;
        if (num == 10000)
        {
            isStartRecord = false;
        }
    }

    /// <summary>
    /// 上传到服务器
    /// </summary>
    /// <param name="path0"></param>
    /// <returns></returns>
    IEnumerator UnLoadImage(byte[] data)
    {
        yield return new WaitForEndOfFrame();
        try
        {
            byte[] bytes = data;
            WWWForm form = new WWWForm();
            form.AddField("Name", num);
            form.AddBinaryData("post", bytes);
            WWW www = new WWW(ServerPath, form);
            
            StartCoroutine(PostData(www));
        }
        catch (Exception e)
        {
            Debug.Log("出现异常：" + e);
        }
        
    }
    /// <summary>
    /// 返回服务器信息
    /// </summary>
    /// <param name="www"></param>
    /// <returns></returns>
    IEnumerator PostData(WWW www)
    {
        yield return www;
        Debug.Log(www.text);
    }

    public void PlayImgsAction()
    {
        if (imgPlayer != null)
        {
            
           StartCoroutine(PlayImg());
        }
    }

    IEnumerator PlayImg()
    {
        Time.timeScale = 0.5f;
        //float width = imgPlayer.rectTransform.rect.width;
        //float height = imgPlayer.rectTransform.rect.height;
        float width = 1024;
        float height = 1024;
        Texture2D texture = new Texture2D((int)width, (int)height);
        for (int i = 0; i < imgList.Count; i++)
        {
            yield return new WaitForEndOfFrame();
            
            
            byte[] bytes = imgList[i];//资源
           
            texture.LoadImage(bytes);
            Sprite sprite = Sprite.Create(texture, new Rect(0, 0, texture.width, texture.height), new Vector2(0.5f, 0.5f));
            
            imgPlayer.sprite = sprite;

            Resources.UnloadUnusedAssets(); //一定要清理游离资源。

        }
        Time.timeScale = 1f;
        //PlayImgsAction();
    }

}