旋转问题修改

TSA-V/frmBoard/FrmNImageViewer.cs

@@ -19,6 +19,9 @@ namespace TSA_V
         private string fileName = "";
         private bool update = false;
         public Image lastImage = null;
+        private int LastWidth = 0;
+        private int LastHeight = 0;
+        private float targetAngle = 0;
 
         /// <summary>
         /// 选择图片的方式0=新增电路板。1=元器件图片
@@ -40,7 +43,10 @@ namespace TSA_V
 
                 lastImage = myImage;
                 this.picViewer.Image = myImage;
-
+                lastImage =(Image) myImage.Clone();
+                LastWidth = lastImage.Width;
+                LastHeight= lastImage.Height;
+                targetAngle = 0;
                 img.Dispose();
                 btnOK.Focus();
             }
@@ -108,40 +114,23 @@ namespace TSA_V
             // 旋转图片90度
             RotateImage(v);
         }
-        //private void RotateImage(float angle)
-        //{
-        //    update = true;
-        //    Image originalImage = (Image)picViewer.Image.Clone();
-        //    // 创建一个新的 Bitmap 用于存储旋转后的图片
-        //    Bitmap bmp = new Bitmap(originalImage.Width, originalImage.Height);
-
-        //    // 设置绘图的旋转角度和中心点
-        //    Graphics g = Graphics.FromImage(bmp);
-        //    g.TranslateTransform((float)bmp.Width / 2, (float)bmp.Height / 2);
-        //    g.RotateTransform(angle);
-        //    g.TranslateTransform(-(float)bmp.Width / 2, -(float)bmp.Height / 2);
-
-        //    // 绘制旋转后的图片
-        //    g.DrawImage(originalImage, new Point(0, 0));
-
-        //    g.Dispose();
-
-        //    // 更新 PictureBox 中的图片
-        //    picViewer.Image = bmp;
      
-        //    // 更新旋转后的图片
-        //    //rotatedImage = bmp;
-        //}
         private void RotateImage(float angle)
         {
+            targetAngle += angle;
+            
             update = true;
-            Image originalImage = (Image)picViewer.Image.Clone();
+            //Image originalImage = (Image)picViewer.Image.Clone();
+            Image originalImage = (Image)lastImage.Clone();
 
             // 计算旋转后包含整个图像的最小矩形
-            RectangleF rotatedRect = new RectangleF(0, 0, originalImage.Width, originalImage.Height);
-            PointF[] points = new PointF[] { new PointF(rotatedRect.Left, rotatedRect.Top), new PointF(rotatedRect.Right, rotatedRect.Top), new PointF(rotatedRect.Left, rotatedRect.Bottom) };
+            RectangleF rotatedRect = new RectangleF(0, 0,LastWidth, LastHeight);
+            //RectangleF rotatedRect = new RectangleF(0, 0, originalImage.Width, originalImage.Height);
+            PointF[] points = new PointF[] { new PointF(rotatedRect.Left, rotatedRect.Top), new PointF(rotatedRect.Right, rotatedRect.Top) ,
+                new PointF(rotatedRect.Left, rotatedRect.Bottom), new PointF(rotatedRect.Right, rotatedRect.Bottom) };
             Matrix matrix = new Matrix();
-            matrix.RotateAt(angle, new PointF(rotatedRect.Width / 2, rotatedRect.Height / 2));
+            float pointA = targetAngle % 360;
+            matrix.RotateAt(pointA, new PointF(rotatedRect.Width / 2, rotatedRect.Height / 2));
             matrix.TransformPoints(points);
             rotatedRect = RectangleF.FromLTRB(points.Min(p => p.X), points.Min(p => p.Y), points.Max(p => p.X), points.Max(p => p.Y));
 
@@ -151,7 +140,7 @@ namespace TSA_V
             // 设置绘图的旋转角度和中心点
             Graphics g = Graphics.FromImage(bmp);
             g.TranslateTransform(rotatedRect.Width / 2, rotatedRect.Height / 2);
-            g.RotateTransform(angle);
+            g.RotateTransform(pointA);
             g.TranslateTransform(-originalImage.Width / 2, -originalImage.Height / 2);
 
             // 绘制旋转后的图片
@@ -167,12 +156,6 @@ namespace TSA_V
         }
 
          
-        /// <summary>
-        /// 获取单通道的掩模图片
-        /// </summary>
-        /// <param name="img"></param>
-        /// <param name="path"></param>
-        /// <returns></returns>
         public Image GetRoiMask(Image img, GraphicsPath path)
         {
             if (path != null)
@@ -244,6 +227,11 @@ namespace TSA_V
                     Image cutImage = CutImage(originalImage, path, true);
                     picViewer.Image = cutImage;
                     picViewer.SelectionRegion = null;
+
+                    lastImage = (Image)cutImage.Clone();
+                    LastWidth = lastImage.Width;
+                    LastHeight = lastImage.Height;
+                    targetAngle = 0;
                 }
 
             }