using OpenCvSharp;
using PaintDotNet.Base;
using System;
using System.Collections.Generic;

namespace PaintDotNet.Adjust
{
    /// <summary>
    /// 图像间操作
    /// </summary>
    public class InterImageIntent
    {
        /// <summary>
        /// 图像间操作-最小值
        /// </summary>
        /// <param name="src"></param>
        /// <returns></returns>
        public static Mat ImageMin(Mat src, List<Args> lists)
        {
            Mat dst = new Mat();
            Mat mat1 = new Mat();
            Mat mat2 = new Mat();
            try
            {
                for (int i = 0; i < lists.Count; i++)
                {
                    Args args = lists[i];
                    switch (args.Key)
                    {
                        case "Src2":
                            mat1 = (Mat)args.Value;
                            break;

                        default:
                            break;
                    }
                }

                int w = src.Width;
                int h = src.Height;
                int w1 = mat1.Width;
                int h1 = mat1.Height;

                mat2 = new Mat(h, w, src.Type(), Scalar.All(0));
                Rect rect = new Rect(0, 0, Math.Min(w, w1), Math.Min(h, h1));
                Mat tempMat = mat1.Clone(rect);

                //复制用户选中的区域到原图像
                Mat mask = tempMat.CvtColor(ColorConversionCodes.RGBA2GRAY);

                Mat pos = new Mat(mat2, rect);
                tempMat.CopyTo(pos, mask);
                //Cv2.CopyMakeBorder(src, src, 0, maxh - src.Height, 0, maxw - src.Width, BorderTypes.Isolated);
                //Cv2.CopyMakeBorder(mat1, mat1, 0, maxh - mat1.Height, 0, maxw - mat1.Width, BorderTypes.Isolated);
                Mat tempMat0 = src.Clone(rect);
                //复制用户选中的区域到原图像
                Mat mask0 = tempMat0.CvtColor(ColorConversionCodes.RGBA2GRAY);
                Mat mat0 = new Mat(h, w, src.Type(), Scalar.All(/*255*/0));
                Mat pos0 = new Mat(mat0, rect);
                tempMat0.CopyTo(pos0, mask0);

                Cv2.Min(mat0, mat2, dst);
            }
            catch (Exception e)
            {
                Console.WriteLine(e.ToString());
                src.CopyTo(dst);
            }
            finally
            {
                if (src != null) dst.CopyTo(src);
                if (dst != null) dst.Dispose();
            }
            return src;
        }

        /// <summary>
        /// 图像间操作-最大值
        /// </summary>
        /// <param name="src"></param>
        /// <returns></returns>
        public static Mat ImageMax(Mat src, List<Args> lists)
        {
            Mat dst = new Mat();
            Mat mat1 = new Mat();
            Mat mat2 = new Mat();
            try
            {
                for (int i = 0; i < lists.Count; i++)
                {
                    Args args = lists[i];
                    switch (args.Key)
                    {
                        case "Src2":
                            mat1 = (Mat)args.Value;
                            break;

                        default:
                            break;
                    }
                }

                int w = src.Width;
                int h = src.Height;
                int w1 = mat1.Width;
                int h1 = mat1.Height;

                mat2 = new Mat(h, w, src.Type(), Scalar.All(0));
                Rect rect = new Rect(0, 0, Math.Min(w, w1), Math.Min(h, h1));
                Mat tempMat = mat1.Clone(rect);

                //复制用户选中的区域到原图像
                Mat mask = tempMat.CvtColor(ColorConversionCodes.RGBA2GRAY);

                Mat pos = new Mat(mat2, rect);
                tempMat.CopyTo(pos, mask);
                //Cv2.CopyMakeBorder(src, src, 0, maxh - src.Height, 0, maxw - src.Width, BorderTypes.Isolated);
                //Cv2.CopyMakeBorder(mat1, mat1, 0, maxh - mat1.Height, 0, maxw - mat1.Width, BorderTypes.Isolated);
                Mat tempMat0 = src.Clone(rect);
                //复制用户选中的区域到原图像
                Mat mask0 = tempMat0.CvtColor(ColorConversionCodes.RGBA2GRAY);
                Mat mat0 = new Mat(h, w, src.Type(), Scalar.All(/*255*/0));
                Mat pos0 = new Mat(mat0, rect);
                tempMat0.CopyTo(pos0, mask0);

                Cv2.Max(mat0, mat2, dst);
            }
            catch (Exception e)
            {
                Console.WriteLine(e.ToString());
                src.CopyTo(dst);
            }
            finally
            {
                if (src != null) dst.CopyTo(src);
                if (dst != null) dst.Dispose();
            }
            return src;
        }

        /// <summary>
        /// 图像间操作-指数
        /// </summary>
        /// <param name="src"></param>
        /// <returns></returns>
        public static Mat ImageIndex(Mat src)
        {
            Mat dst = new Mat();
            try
            {
                Mat resultImage = new Mat(src.Size(), src.Type());
                src.ConvertTo(resultImage, MatType.CV_64F, 1.0 / 255, 0);
                Cv2.Pow(resultImage, 5.5, resultImage);
                Cv2.ConvertScaleAbs(resultImage * 255, resultImage);
                Cv2.Normalize(resultImage, resultImage, 1, 255, NormTypes.MinMax);
                resultImage.CopyTo(dst);
            }
            catch (Exception e)
            {
                Console.WriteLine(e.ToString());
                src.CopyTo(dst);
            }
            finally
            {
                if (src != null) dst.CopyTo(src);
                if (dst != null) dst.Dispose();
            }
            return src;
        }

        /// <summary>
        /// 图像间操作-对数
        /// </summary>
        /// <param name="src"></param>
        /// <returns></returns>
        public static Mat ImageLogarithm(Mat src)
        {
            bool isFourChannels = false;
            if (src.Channels() == 4)
            {
                Cv2.CvtColor(src, src, OpenCvSharp.ColorConversionCodes.BGRA2BGR);
                isFourChannels = true;
            }

            Mat dst = new Mat();
            try
            {
                Mat resultImage = new Mat(src.Size(), src.Type());
                for (int y = 0; y < src.Height; y++)//行			
                {
                    for (int x = 0; x < src.Width; x++)//列
                    {
                        Vec3b pix = src.At<Vec3b>(y, x);
                        pix[0] = (byte)(Math.Log(pix[0] + 1) * 9);
                        pix[1] = (byte)(Math.Log(pix[1] + 1) * 9);
                        pix[2] = (byte)(Math.Log(pix[2] + 1) * 9);
                        //if (pix[0] > 255) pix[0] = 255;
                        //if (pix[0] < 0) pix[0] = 0;
                        //if (pix[1] > 255) pix[1] = 255;
                        //if (pix[1] < 0) pix[1] = 0;
                        //if (pix[2] > 255) pix[2] = 255;
                        //if (pix[2] < 0) pix[2] = 0;
                        resultImage.Set<Vec3b>(y, x, pix);
                    }
                }
                Cv2.ConvertScaleAbs(resultImage, resultImage);
                Cv2.Normalize(resultImage, resultImage, 1, 255, NormTypes.MinMax);
                resultImage.CopyTo(dst);
            }
            catch (Exception e)
            {
                Console.WriteLine(e.ToString());
                src.CopyTo(dst);
            }
            finally
            {
                if (src != null) dst.CopyTo(src);
                if (dst != null) dst.Dispose();
            }

            if (isFourChannels)
            {
                Cv2.CvtColor(src, src, OpenCvSharp.ColorConversionCodes.BGR2BGRA);
            }

            return src;
        }

        /// <summary>
        /// 图像间操作-平方根
        /// </summary>
        /// <param name="src"></param>
        /// <returns></returns>
        public static Mat ImageSquareBoot(Mat src)
        {
            Mat dst = new Mat();

            bool isFourChannels = false;
            if (src.Channels() == 4)
            {
                Cv2.CvtColor(src, src, OpenCvSharp.ColorConversionCodes.BGRA2BGR);
                isFourChannels = true;
            }

            try
            {
                Mat resultImage = new Mat(src.Size(), src.Type());
                for (int y = 0; y < src.Height; y++)//行			
                {
                    for (int x = 0; x < src.Width; x++)//列
                    {
                        Vec3b pix = src.At<Vec3b>(y, x);
                        pix[0] = (byte)(Math.Sqrt(pix[0]) * 15);
                        pix[1] = (byte)(Math.Sqrt(pix[1]) * 15);
                        pix[2] = (byte)(Math.Sqrt(pix[2]) * 15);
                        //if (pix[0] > 255) pix[0] = 255;
                        //if (pix[0] < 0) pix[0] = 0;
                        //if (pix[1] > 255) pix[1] = 255;
                        //if (pix[1] < 0) pix[1] = 0;
                        //if (pix[2] > 255) pix[2] = 255;
                        //if (pix[2] < 0) pix[2] = 0;
                        resultImage.Set<Vec3b>(y, x, pix);
                    }
                }
                Cv2.ConvertScaleAbs(resultImage, resultImage);
                Cv2.Normalize(resultImage, resultImage, 1, 255, NormTypes.MinMax);
                resultImage.CopyTo(dst);
            }
            catch (Exception e)
            {
                Console.WriteLine(e.ToString());
                src.CopyTo(dst);
            }
            finally
            {
                if (src != null) dst.CopyTo(src);
                if (dst != null) dst.Dispose();
            }

            if (isFourChannels)
            {
                Cv2.CvtColor(src, src, OpenCvSharp.ColorConversionCodes.BGR2BGRA);
            }

            return src;
        }

        /// <summary>
        /// 图像间操作-平方
        /// </summary>
        /// <param name="src"></param>
        /// <returns></returns>
        public static Mat ImageSquare(Mat src)
        {
            Mat dst = new Mat();
            try
            {
                Mat resultImage = new Mat(src.Size(), src.Type());
                src.ConvertTo(resultImage, MatType.CV_64F, 1.0 / 255, 0);
                Cv2.Pow(resultImage, 2, resultImage);
                Cv2.ConvertScaleAbs(resultImage * 255, resultImage);
                Cv2.Normalize(resultImage, resultImage, 1, 255, NormTypes.MinMax);
                resultImage.CopyTo(dst);
            }
            catch (Exception e)
            {
                Console.WriteLine(e.ToString());
                src.CopyTo(dst);
            }
            finally
            {
                if (src != null) dst.CopyTo(src);
                if (dst != null) dst.Dispose();
            }
            return src;
        }

        /// <summary>
        /// 图像间操作-平均
        /// </summary>
        /// <param name="src"></param>
        /// <returns></returns>
        public static Mat ImageAverage(Mat src, List<Args> lists)
        {
            Mat dst = new Mat();
            Mat mat1 = new Mat();
            Mat mat2;// = new Mat();
            try
            {
                for (int i = 0; i < lists.Count; i++)
                {
                    Args args = lists[i];
                    switch (args.Key)
                    {
                        case "Src2":
                            mat1 = (Mat)args.Value;
                            break;

                        default:
                            break;
                    }
                }

                int w = src.Width;
                int h = src.Height;
                int w1 = mat1.Width;
                int h1 = mat1.Height;

                mat2 = new Mat(h, w, src.Type(), Scalar.All(0));
                Rect rect = new Rect(0, 0, Math.Min(w, w1), Math.Min(h, h1));
                Mat tempMat = mat1.Clone(rect);

                //复制用户选中的区域到原图像
                Mat mask = tempMat.CvtColor(ColorConversionCodes.RGBA2GRAY);

                Mat pos = new Mat(mat2, rect);
                tempMat.CopyTo(pos, mask);
                //Cv2.CopyMakeBorder(src, src, 0, maxh - src.Height, 0, maxw - src.Width, BorderTypes.Isolated);
                //Cv2.CopyMakeBorder(mat1, mat1, 0, maxh - mat1.Height, 0, maxw - mat1.Width, BorderTypes.Isolated);
                Mat tempMat0 = src.Clone(rect);
                //复制用户选中的区域到原图像
                Mat mask0 = tempMat0.CvtColor(ColorConversionCodes.RGBA2GRAY);
                Mat mat0 = new Mat(h, w, src.Type(), Scalar.All(/*255*/0));
                Mat pos0 = new Mat(mat0, rect);
                tempMat0.CopyTo(pos0, mask0);

                Cv2.AddWeighted(src/*mat0*/, 0.5, mat2, 0.5, 1, dst);// (mat0, mat2, dst);

                //Cv2.Add(mat0, mat2, dst);
                //dst = dst / 2;
                ////Cv2.Normalize(dst, dst, 1, 255, NormTypes.MinMax);
            }
            catch (Exception e)
            {
                Console.WriteLine(e.ToString());
                src.CopyTo(dst);
            }
            finally
            {
                if (src != null) dst.CopyTo(src);
                if (dst != null) dst.Dispose();
            }
            return src;
        }

        /// <summary>
        /// 图像间操作-除
        /// </summary>
        /// <param name="src"></param>
        /// <returns></returns>
        public static Mat ShadingDivide(Mat src, List<Args> lists)
        {
            Mat dst = new Mat();
            Mat mat1 = new Mat();
            Mat mat2;// = new Mat();
            double factor = 1;

            bool isFourChannels = false;
            if (src.Channels() == 4)
            {
                Cv2.CvtColor(src, src, OpenCvSharp.ColorConversionCodes.BGRA2BGR);
                isFourChannels = true;
            }

            try
            {
                for (int i = 0; i < lists.Count; i++)
                {
                    Args args = lists[i];
                    switch (args.Key)
                    {
                        case "Src2":
                            var mat = (Mat)args.Value;
                            if (mat.Channels() == 4)
                            {
                                Cv2.CvtColor(mat, mat, OpenCvSharp.ColorConversionCodes.BGRA2BGR);
                            }
                            mat1 = mat;
                            break;
                        case "Factor":
                            if (double.TryParse(args.Value.ToString(), out factor))
                            {
                                if (factor == 0)
                                {
                                    factor = 1;
                                }
                                else
                                {
                                    factor = 1.0 / factor;
                                }
                            }
                            break;

                        default:
                            break;
                    }
                }

                int w = src.Width;
                int h = src.Height;
                int w1 = mat1.Width;
                int h1 = mat1.Height;

                mat2 = new Mat(h, w, src.Type(), Scalar.All(0));
                Rect rect = new Rect(0, 0, Math.Min(w, w1), Math.Min(h, h1));
                Mat tempMat = mat1.Clone(rect);

                //复制用户选中的区域到原图像
                Mat mask = tempMat.CvtColor(ColorConversionCodes.RGBA2GRAY);

                Mat pos = new Mat(mat2, rect);
                tempMat.CopyTo(pos, mask);
                //Cv2.CopyMakeBorder(src, src, 0, maxh - src.Height, 0, maxw - src.Width, BorderTypes.Isolated);
                //Cv2.CopyMakeBorder(mat1, mat1, 0, maxh - mat1.Height, 0, maxw - mat1.Width, BorderTypes.Isolated);
                Mat tempMat0 = src.Clone(rect);
                //复制用户选中的区域到原图像
                Mat mask0 = tempMat0.CvtColor(ColorConversionCodes.RGBA2GRAY);
                Mat mat0 = new Mat(h, w, src.Type(), Scalar.All(/*255*/0));
                Mat pos0 = new Mat(mat0, rect);
                tempMat0.CopyTo(pos0, mask0);

                Cv2.Divide(src/*mat0*/, mat2, dst, factor);
                //Cv2.Normalize(dst, dst, 1, 255, NormTypes.MinMax);
            }
            catch (Exception e)
            {
                Console.WriteLine(e.ToString());
                src.CopyTo(dst);
            }
            finally
            {
                if (src != null) dst.CopyTo(src);
                if (dst != null) dst.Dispose();
            }

            if (isFourChannels)
            {
                Cv2.CvtColor(src, src, OpenCvSharp.ColorConversionCodes.BGR2BGRA);
            }
            return src;
        }

        /// <summary>
        /// 图像间操作-乘
        /// </summary>
        /// <param name="src"></param>
        /// <returns></returns>
        public static Mat ShadingMultiply(Mat src, List<Args> lists)
        {
            bool isFourChannels = false;
            if(src.Channels() == 4)
            {
                Cv2.CvtColor(src, src, OpenCvSharp.ColorConversionCodes.BGRA2BGR);
                isFourChannels = true;
            }

            Mat dst = new Mat();
            Mat mat1 = new Mat();
            Mat mat2;//待优化： = new Mat();
            double factor = 1;
            try
            {
                for (int i = 0; i < lists.Count; i++)
                {
                    Args args = lists[i];
                    switch (args.Key)
                    {
                        case "Src2":
                            var mat = (Mat)args.Value;
                            if (mat.Channels() == 4)
                            {
                                Cv2.CvtColor(mat, mat, OpenCvSharp.ColorConversionCodes.BGRA2BGR);
                            }
                            mat1 = mat;
                            break;
                        case "Factor":
                            if (double.TryParse(args.Value.ToString(), out factor))
                            {
                                if (factor == 0)
                                {
                                    factor = 1;
                                }
                                else
                                {
                                    factor = 1.0 / factor;
                                }
                            }
                            break;

                        default:
                            break;
                    }
                }

                int w = src.Width;
                int h = src.Height;
                int w1 = mat1.Width;
                int h1 = mat1.Height;

                mat2 = new Mat(h, w, src.Type(), Scalar.All(0));
                Rect rect = new Rect(0, 0, Math.Min(w, w1), Math.Min(h, h1));
                Mat tempMat = mat1.Clone(rect);

                //复制用户选中的区域到原图像
                Mat mask = tempMat.CvtColor(ColorConversionCodes.RGBA2GRAY);

                Mat pos = new Mat(mat2, rect);
                tempMat.CopyTo(pos, mask);
                //Cv2.CopyMakeBorder(src, src, 0, maxh - src.Height, 0, maxw - src.Width, BorderTypes.Isolated);
                //Cv2.CopyMakeBorder(mat1, mat1, 0, maxh - mat1.Height, 0, maxw - mat1.Width, BorderTypes.Isolated);
                Mat tempMat0 = src.Clone(rect);
                //复制用户选中的区域到原图像
                Mat mask0 = tempMat0.CvtColor(ColorConversionCodes.RGBA2GRAY);
                Mat mat0 = new Mat(h, w, src.Type(), Scalar.All(/*255*/0));
                Mat pos0 = new Mat(mat0, rect);
                tempMat0.CopyTo(pos0, mask0);

                Cv2.Multiply(src/*mat0*/, mat2, dst, factor);
                //Cv2.Normalize(dst, dst, 1, 255, NormTypes.MinMax);
            }
            catch (Exception e)
            {
                Console.WriteLine(e.ToString());
                src.CopyTo(dst);
            }
            finally
            {
                if (src != null) dst.CopyTo(src);
                if (dst != null) dst.Dispose();
            }

            if (isFourChannels)
            {
                Cv2.CvtColor(src, src, OpenCvSharp.ColorConversionCodes.BGR2BGRA);
            }
            return src;
        }

        /// <summary>
        /// 图像间操作-减
        /// </summary>
        /// <param name="src"></param>
        /// <returns></returns>
        public static Mat ShadingSubtract(Mat src, List<Args> lists)
        {

            Mat dst = new Mat();
            Mat mat1 = new Mat();
            Mat mat2 = new Mat();
            bool isFourChannels = false;
            if(src.Channels() == 4)
            {
                Cv2.CvtColor(src, src, OpenCvSharp.ColorConversionCodes.BGRA2BGR);
                isFourChannels = true;
            }

            try
            {
                for (int i = 0; i < lists.Count; i++)
                {
                    Args args = lists[i];
                    switch (args.Key)
                    {
                        case "Src2":
                            var mat = (Mat)args.Value;
                            if (mat.Channels() == 4)
                            {
                                Cv2.CvtColor(mat, mat, OpenCvSharp.ColorConversionCodes.BGRA2BGR);
                            }
                            mat1 = mat;
                            break;

                        default:
                            break;
                    }
                }

                int w = src.Width;
                int h = src.Height;
                int w1 = mat1.Width;
                int h1 = mat1.Height;

                mat2 = new Mat(h, w, src.Type(), Scalar.All(0));
                Rect rect = new Rect(0, 0, Math.Min(w, w1), Math.Min(h, h1));
                Mat tempMat = mat1.Clone(rect);

                //复制用户选中的区域到原图像
                Mat mask = tempMat.CvtColor(ColorConversionCodes.RGBA2GRAY);

                Mat pos = new Mat(mat2, rect);
                tempMat.CopyTo(pos, mask);
                //Cv2.CopyMakeBorder(src, src, 0, maxh - src.Height, 0, maxw - src.Width, BorderTypes.Isolated);
                //Cv2.CopyMakeBorder(mat1, mat1, 0, maxh - mat1.Height, 0, maxw - mat1.Width, BorderTypes.Isolated);
                Mat tempMat0 = src.Clone(rect);
                //复制用户选中的区域到原图像
                Mat mask0 = tempMat0.CvtColor(ColorConversionCodes.RGBA2GRAY);
                Mat mat0 = new Mat(h, w, src.Type(), Scalar.All(/*255*/0));
                Mat pos0 = new Mat(mat0, rect);
                tempMat0.CopyTo(pos0, mask0);

                Cv2.Subtract(src/*待确认效果：mat0*/, mat2, dst);
                //Cv2.Normalize(dst, dst, 1, 255, NormTypes.MinMax);
            }
            catch (Exception e)
            {
                Console.WriteLine(e.ToString());
                src.CopyTo(dst);
            }
            finally
            {
                if (src != null) dst.CopyTo(src);
                if (dst != null) dst.Dispose();
            }

            if (isFourChannels) {
                Cv2.CvtColor(src, src, OpenCvSharp.ColorConversionCodes.BGR2BGRA);
            }

            return src;
        }

        /// <summary>
        /// 图像间操作-加
        /// </summary>
        /// <param name="src"></param>
        /// <returns></returns>
        public static Mat ShadingAdd(Mat src, List<Args> lists)
        {
            Mat dst = new Mat();
            Mat mat1 = new Mat();
            Mat mat2 = new Mat(); ;
            try
            {
                for (int i = 0; i < lists.Count; i++)
                {
                    Args args = lists[i];
                    switch (args.Key)
                    {
                        case "Src2":
                            mat1 = (Mat)args.Value;
                            break;

                        default:
                            break;
                    }
                }

                int w = src.Width;
                int h = src.Height;
                int w1 = mat1.Width;
                int h1 = mat1.Height;

                int maxw = w;// w > w1 ? w : w1;
                int maxh = h;// h > h1 ? h : h1;

                //Scalar s = new Scalar(0, 0, 255);//创建一个颜色对象
                //mat2 = new Mat(w, h, MatType.CV_16SC1, s);
                mat2 = new Mat(maxh, maxw, src.Type(), Scalar.All(/*255*/0));
                Rect rect = new Rect(0, 0, Math.Min(w, w1), Math.Min(h, h1));
                Mat tempMat = mat1.Clone(rect);

                //复制用户选中的区域到原图像
                Mat mask = tempMat.CvtColor(ColorConversionCodes.RGBA2GRAY);

                Mat pos = new Mat(mat2, rect);
                tempMat.CopyTo(pos, mask);

                //Cv2.CopyMakeBorder(src, src, 0, maxh - src.Height, 0, maxw - src.Width, BorderTypes.Isolated);
                //Cv2.CopyMakeBorder(mat1, mat1, 0, maxh - mat1.Height, 0, maxw - mat1.Width, BorderTypes.Isolated);

                Mat tempMat0 = src.Clone(rect);
                //复制用户选中的区域到原图像
                Mat mask0 = tempMat0.CvtColor(ColorConversionCodes.RGBA2GRAY);
                Mat mat0 = new Mat(maxh, maxw, src.Type(), Scalar.All(/*255*/0));
                Mat pos0 = new Mat(mat0, rect);
                tempMat0.CopyTo(pos0, mask0);

                Cv2.Add(/*mat0*/src, mat2, dst);
                //Cv2.Normalize(dst, dst, 1, 255, NormTypes.MinMax);
            }
            catch(Exception e)
            {
                Console.WriteLine(e.ToString());
                src.CopyTo(dst);
            }
            finally
            {
                if (src != null) dst.CopyTo(src);
                if (dst != null) dst.Dispose();
                if (mat2 != null)
                {
                    mat2.Dispose();
                }
            }
            return src;
        }

        /// <summary>
        /// 图像任意角度旋转,进行插值(仿射变换)
        /// </summary>
        /// <param name="src">源</param>
        /// <param name="dst">目标</param>
        /// <param name="angle">角度</param>
        public static void ImageRotate(Mat src, Mat dst, float angle, InterpolationFlags flags)
        {
            Mat dst1 = new Mat();
            Point2f center = new Point2f(src.Cols / 2, src.Rows / 2);
            Mat rot = Cv2.GetRotationMatrix2D(center, -angle, 1);
            Size2f s2f = new Size2f(src.Size().Width, src.Size().Height);
            Rect box = new RotatedRect(new Point2f(0, 0), s2f, -angle).BoundingRect();
            double xx = rot.At<double>(0, 2) + box.Width / 2 - src.Cols / 2;
            double zz = rot.At<double>(1, 2) + box.Height / 2 - src.Rows / 2;
            rot.Set(0, 2, xx);
            rot.Set(1, 2, zz);
            //对图片进行仿射变换
            Cv2.WarpAffine(src, dst1, rot, box.Size, flags);
            dst1.CopyTo(dst);
        }
    }
}