/// <summary>
///
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void Button2_Checked(object sender, RoutedEventArgs e)
{
using (DrawingContext dc = _grid.RenderOpen())
{
// vertical.
dc.DrawLine(_gridPen, new Point(0, 40), new Point(301, 40));
dc.DrawLine(_gridPen, new Point(0, 80), new Point(301, 80));
dc.DrawLine(_gridPen, new Point(0, 120), new Point(301, 120));
dc.DrawLine(_gridPen, new Point(0, 160), new Point(301, 160));
// horizontal.
dc.DrawLine(_gridPen, new Point(60, 0), new Point(60, 201));
dc.DrawLine(_gridPen, new Point(120, 0), new Point(120, 201));
dc.DrawLine(_gridPen, new Point(180, 0), new Point(180, 201));
dc.DrawLine(_gridPen, new Point(240, 0), new Point(240, 201));
DrawingSpace.AddVisual(_grid);
}
}
/// <summary>
///
/// </summary>
private void _DrawShape()
{
List <Point> points = _CalculatePoints();
DrawingVisual visual = new DrawingVisual();
using (DrawingContext dc = visual.RenderOpen())
{
if (points.Count > 0)
{
Point start = points[0];
foreach (Point p in points)
{
dc.DrawLine(_pen, start, p);
start = p;
}
}
DrawingSpace.DeleteVisual(_visual);
_visual = visual;
DrawingSpace.AddVisual(_visual);
}
}