相關知識參考DrawTool畫筆之紋理筆? ， 圖形筆的實現跟紋理筆的實現是一樣的，重載Stroke的DrawCore方法,效果圖:

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代碼如下:

/// <summary>/// 圖形筆/// </summary>public class ImageStroke : Stroke{private string imageFile_;private System.Windows.Media.ImageSource imageSource_;private Point curPoint;public ImageStroke(System.Windows.Input.StylusPointCollection points, DrawingAttributes da, string file): base(points, da){this.imageFile_ = file;this.imageSource_ = new System.Windows.Media.Imaging.BitmapImage(new Uri( this.imageFile_));}protected override void DrawCore(System.Windows.Media.DrawingContext drawingContext, DrawingAttributes drawingAttributes){double num = drawingAttributes.Width + 20.0;System.Windows.Media.StreamGeometry streamGeometry = new System.Windows.Media.StreamGeometry();using (System.Windows.Media.StreamGeometryContext streamGeometryContext = streamGeometry.Open()){streamGeometryContext.BeginFigure((Point)base.StylusPoints[0], false, false);drawingContext.DrawImage(this.imageSource_, new Rect(((Point)base.StylusPoints[0]).X - num / 2.0, ((Point)base.StylusPoints[0]).Y - num / 2.0, num, num));this.curPoint = (Point)base.StylusPoints[0];foreach (System.Windows.Input.StylusPoint current in base.StylusPoints){ImageStroke.DrawImage(ref this.curPoint, (Point)current, num, drawingContext, this.imageSource_);}}}public static double GetDistance(Point a, Point b){return System.Math.Abs(Point.Subtract(a, b).Length);}public static Point GetPointBetween(Point a, Point b, double len){Vector vector = Point.Subtract(a, b);vector.Normalize();vector = Vector.Multiply(vector, len);return Point.Subtract(a, vector);}public static void DrawImage(ref Point a, Point b, double width, System.Windows.Media.DrawingContext drawingContext, System.Windows.Media.ImageSource imageSource){for (double distance = ImageStroke.GetDistance(a, b); distance >= width; distance = ImageStroke.GetDistance(a, b)){Point pointBetween = ImageStroke.GetPointBetween(a, b, width);drawingContext.DrawImage(imageSource, new Rect(pointBetween.X - width / 2.0, pointBetween.Y - width / 2.0, width, width));a = pointBetween;}}}

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實例應用可以參考紋理筆，在生成stroke對象時候使用ImageStroke然后將stroke添加到inkcanvas的strokes集合中

轉載于:https://www.cnblogs.com/andy1987/p/4349677.html

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