//<Snippet37>
private void HitTestWithEraser(Point[] points)
{
RectangleStylusShape eraser = new RectangleStylusShape(3, 3, 0);
StrokeCollection strokes = presenter.Strokes.HitTest(points, eraser);
foreach (Stroke s in strokes)
{
s.DrawingAttributes.Color = Colors.Purple;
}
}
private StylusShape generateStylusShape()
{
double size = drawingAttributes.Width;
StylusShape stylusShape;
if (drawingAttributes.StylusTip == StylusTip.Ellipse)
{
stylusShape = new EllipseStylusShape(size, size);
}
else
{
stylusShape = new RectangleStylusShape(size, size);
}
return(stylusShape);
}
