做面食专业网站,深圳建站公司专业公司,手机app定制开发,北京昨天出啥大事了这里先封装一个方法#xff0c;使用的时候先创建一个Draw#xff0c;拿到DrawingContext 之后就可以通过DrawingContext 去绘制想要的图形#xff0c;绘制完成后通过GetDraw拿到所有绘制的结果 添加一个PrintImage()用于测试当前绘图的样子用于测试 public class DrawVector…这里先封装一个方法使用的时候先创建一个Draw拿到DrawingContext 之后就可以通过DrawingContext 去绘制想要的图形绘制完成后通过GetDraw拿到所有绘制的结果 添加一个PrintImage()用于测试当前绘图的样子用于测试 public class DrawVector{public DrawingVisual? visual { get; set; }public DrawingContext CreateDraw(){if (visual null)visual new DrawingVisual();var dc visual.RenderOpen();return dc;}public DrawingGroup? GetDraw(DrawingContext? dc){if (visual null)return null;if (dc null)return null;Dispose(dc);var draw visual.Drawing.Frozen();//PrintImage();return draw;}/// summary/// 测试打印绘图结果/// /summaryprivate void PrintImage(){var bmp new RenderTargetBitmap(2000, 2000, 96, 96, PixelFormats.Pbgra32);bmp.Render(visual);var encoder new PngBitmapEncoder();encoder.Frames.Add(BitmapFrame.Create(bmp));using (var stream new FileStream($D:\\{Guid.NewGuid()}.png, FileMode.Create)){encoder.Save(stream);}}public void RotationAngle(DrawingContext dc, Rect rect, double angleInDegrees){var rotateTransform new RotateTransform(angleInDegrees, rect.X rect.Width / 2, rect.Y rect.Height / 2);dc.PushTransform(rotateTransform);}private void Dispose(DrawingContext? dc){if (dc ! null)dc.Close();}}使用实例 var drawVector new DrawVector();var dc drawVector.CreateDraw();dc.DrawRectangle(System.Windows.Media.Brushes.White, new System.Windows.Media.Pen(System.Windows.Media.Brushes.White, 1).Frozen(), new Rect(0, 0, MapBackCanvasWidth, MapBackCanvasHeight));DrawVectorContent(dc);return drawVector.GetDraw(dc);
