using OpenCvSharp;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace PaintDotNet.GeneralAnalysis
{
    public class AnalysisTools
    {
        /// <summary>
        /// 获取指定颜色在mat中的比例，去掉透明
        /// </summary>
        /// <param name="mat"></param>
        /// <param name="color"></param>
        /// <param name="bgColor"></param>
        /// <returns></returns>
        public static int GetPointsFromMat(Mat mat)
        {
            Mat[] aaa = mat.Split();
            int amount = Cv2.CountNonZero(aaa[3]);
            return amount;
        }

        public static int GetAlphaPointsFromMat(Mat mat)
        {
            Mat[] aaa = mat.Split();
            int amount = Cv2.CountNonZero(aaa[0]);
            return amount;
        }

        public static int GetPointsFromMatByGray(Mat mat)
        {
            Mat[] aaa = mat.Split();
            int amount = Cv2.CountNonZero(aaa[1]);
            return amount;
        }

        /// <summary>
        /// 保留几位小数转换为字符串
        /// </summary>
        /// <param name="decnum"></param>
        /// <returns></returns>
        public static String GetDecNum(double value ,int decnum)
        {
            return Math.Round(value, decnum).ToString();
        }

    }
}