using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using OpenCvSharp;
using OpenCvSharp.Blob;
using OpenCvSharp.XFeatures2D;

namespace AOI
{
    /// <summary>
    /// 颜色匹配，各种颜色占比（灰度图的直方图）进行匹配，不方向无关
    /// </summary>
    public class AoiColorMatchMethod : AoiMethod
    {
        /// <summary>
        /// 相似度百分比
        /// </summary>
        public double SamePercent = 50;

        public override ResultBean Check(Image standardImage, Image imageToCheck)
        {
            ResultBean resultBean = new ResultBean(MethodName,5,SamePercent,SamePercent);
           
            bool needCut = true;
            Image standardRoiImg = GetRoiImage(standardImage, needCut);
            resultBean.standardRoiImage = standardRoiImg;
            double percent = GetColorMatchPercent(standardImage, imageToCheck, out Image cutImg);
            bool result = false;
            if(SamePercent > 100)
            {
                SamePercent = 100;
            }

            if(percent >= SamePercent)
            {
                result = true;
            }
            resultBean.currentRoiImage = cutImg;
            resultBean.result = result;
            resultBean.percentValue =Math.Round( percent,3);
            return resultBean;
        }

        /// <summary>
        /// 获取模板相似度
        /// </summary>
        /// <param name="standardImage"></param>
        /// <param name="imageToCheck"></param>
        /// <param name="cutImg"></param>
        /// <returns></returns>
        public double GetColorMatchPercent(Image standardImage, Image imageToCheck, out Image cutImg)
        {
            bool needCut = true;
            //标准图中的Mart区域
            Image templateImage = GetRoiImage(standardImage, RoiPath, needCut);
            //搜索区域
            Image searchImage = GetRoiImage(imageToCheck, RoiPath, needCut);
            cutImg = searchImage;
            try
            {
                //searchImage = imageToCheck;
                if (templateImage != null && searchImage != null)
                {
                    Mat searchMat = ImageUtil.ToMat(new Bitmap(searchImage));
                    Mat templateMat = ImageUtil.ToMat(new Bitmap(templateImage));

                    //转换为灰度图，对直方图进行匹配
                    Mat searchHist = ImageUtil.GetGrayHist(searchMat);
                    Mat templateHist = ImageUtil.GetGrayHist(templateMat);

                    double compareValue = Cv2.CompareHist(templateHist, searchHist, HistCompMethods.Correl);
                    return compareValue * 100;
                }
            }catch(Exception ex)
            {
                Console.Write(ex.ToString());
            }
            return 0;
        }
    }
}