void initLine(Color c) { line = new ArrowLine(); line.ArrowAngle = 40; line.Stroke = new SolidColorBrush(c); line.StrokeThickness = ShapeUtils.LINE_WIDTH; line.Effect = ShapeUtils.ShadowProvider(); line.Tag = this; selMarker1 = ShapeUtils.MakeLinkEnd(); selMarker1.Tag = this; selMarker2 = ShapeUtils.MakeLinkEnd(); selMarker2.Tag = this; line.MouseWheel += MouseWheel; }