原型模式應用於旋轉不同角度之圖片: 使用C#－天天向上

   1: public interface IRotate   2: {   3:     void Rotate();   4:     void PyrmidDown();   5:     void PyrmidUp();   6: }

ImgData類別

1. Line 4: 旋轉角度

2. Line 5: 創建img(影像資料)

3. Line 6~10: ImgData創建子，輸入影像路徑，並且讀入imread()。

4. Line 11~14: 回傳影像資料(img)

5. Line 16~21: Clone()函式中

5.1 新增ImgData實體obj

5.2 利用OpenCV函式(CopyTo)進行影像複製

5.3 回傳該ImgData實體

   1: public class ImgData : ICloneable   2:    {   3:        Mat img = null;   4:        public int Angle { get; set; }   5:        public ImgData() { img = new Mat(); }   6:        public ImgData(string filePath)   7:        {   8:            img = new Mat();   9:            img = CvInvoke.Imread(filePath, ImreadModes.Unchanged);  10:        }  11:        public Mat Data  12:        {  13:            get { return img; }  14:        }  15:    16:        public object Clone()  17:        {  18:            ImgData obj = new ImgData();  19:            this.Data.CopyTo(obj.Data);  20:            return obj;  21:        }  22:    }

ImgTemp類別

1. Line 4~7: ImgTemp創建子

2. Line 8~11:深複製會呼叫他複製影像資料至 this.imgData

3. Line 13: Data公開屬性: 回傳影像資料

4. Line 14: Angle公開屬性: 旋轉角度

5. Line 15~22:公開方法: 旋轉

6. Line 23~ 26: 公開方法: PyrmidDown 縮小一半

7. Line 27~ 30: 公開方法: PyrmidUp 放大一半

8: Line 32~37: 深複製，新增ImgTemp實體(以舊有imgData初始化)，並複製角度

   1: public class ImgTemp : IRotate, ICloneable   2:     {   3:         private ImgData imgData;   4:         public ImgTemp(string filePath)   5:         {   6:             imgData = new ImgData(filePath);   7:         }   8:         public ImgTemp(ImgData imgData)   9:         {  10:             this.imgData = (ImgData)imgData.Clone();  11:         }  12:    13:         public Mat Data { get { return imgData.Data; } }  14:         public int Angle { get { return imgData.Angle; } set { imgData.Angle = value; } }  15:         public void Rotate()  16:         {  17:             PointF srcCenter = new PointF(imgData.Data.Cols / 2, imgData.Data.Rows / 2);  18:             Mat transMat = new Mat();  19:             double scale = 1.0;  20:             CvInvoke.GetRotationMatrix2D(srcCenter, imgData.Angle, scale, transMat);  21:             CvInvoke.WarpAffine(imgData.Data, imgData.Data, transMat, imgData.Data.Size);  22:         }  23:         public void PyrmidDown()  24:         {  25:             CvInvoke.PyrDown(imgData.Data, imgData.Data, BorderType.Default);  26:         }  27:         public void PyrmidUp()  28:         {  29:             CvInvoke.PyrUp(imgData.Data, imgData.Data, BorderType.Default);  30:         }  31:    32:         public object Clone()  33:         {  34:             ImgTemp obj = new ImgTemp(this.imgData);  35:             obj.Angle = this.Angle;  36:             return obj;  37:         }  38:    39:     }

客戶端

   1: public Form1()   2:        {   3:            InitializeComponent();   4:        }   5:     6:        ImgTemp imgTemp;   7:        const int COPYNUMBER = 20;   8:        ImgTemp[] imgArray = new ImgTemp[COPYNUMBER];   9:        private void button1_Click(object sender, EventArgs e)  10:        {  11:            using (OpenFileDialog ofd = new OpenFileDialog())  12:            {  13:                if(ofd.ShowDialog()== DialogResult.OK)  14:                {  15:                    imgTemp = new ImgTemp(ofd.FileName);  16:                    //  17:                    //imgTemp.PyrmidDown();  18:                    if(comboBox2.SelectedIndex>0)  19:                    {  20:                        for(int i=0;i< comboBox2.SelectedIndex; i++)  21:                        imgTemp.PyrmidDown();  22:                    }  23:                    imageBox1.Image = imgTemp.Data;  24:                }  25:            }  26:    27:        }  28:    29:        private void button2_Click(object sender, EventArgs e)  30:        {  31:    32:            Stopwatch s = new Stopwatch();  33:            s.Start();  34:            int angleStep = 180 / COPYNUMBER;  35:            //imgTemp.PyrmidDown();  36:            Parallel.For(0, COPYNUMBER, delegate (int i)  37:            {  38:                imgArray[i] = (ImgTemp)imgTemp.Clone();  39:                if (i > 0)  40:                {  41:                    imgArray[i].Angle = (i + 1) * angleStep;  42:                      43:                    imgArray[i].Rotate();  44:                    //imgArray[i].PyrmidDown();  45:                }  46:            });  47:    48:              49:            //for(int i=0; i<imgCpyArray.Length; i++)  50:            //{  51:            //    imgCpyArray[i] = (ImgSrc)imgSrc.Clone();  52:            //    if (i > 0)  53:            //    {  54:            //        imgCpyArray[i].Angle = (i + 1) * angleStep;  55:            //        imgCpyArray[i].imgRotate();  56:            //    }  57:            //}  58:            s.Stop();  59:            this.Text = s.Elapsed.TotalMilliseconds.ToString();  60:        }  61:    62:        private void Form1_Load(object sender, EventArgs e)  63:        {  64:            comboBox2.SelectedIndex = 0;  65:            for (int i = 0; i < COPYNUMBER; i++)  66:                comboBox1.Items.Add(i.ToString());  67:     68:        }  69:    70:        private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)  71:        {  72:            int index = comboBox1.SelectedIndex;  73:            if (index >= 0)  74:            {  75:                if (imgArray[index] == null) return;  76:                if (!imgArray[index].Data.IsEmpty)  77:                {  78:                    imageBox1.Image = imgArray[index].Data;  79:                    int angleStep = 180 / COPYNUMBER;  80:                    int angle = (comboBox1.SelectedIndex ) * angleStep;  81:                    label3.Text = string.Format("旋轉角度: {0}", angle);  82:                }  83:                else  84:                {  85:                    imageBox1.Image = imgTemp.Data;   86:                }  87:            }  88:        }