private void On_Mouse_Down(Object sender, MouseEventArgs e)
{
foreach (VertexView v in Views.OfType <VertexView>())
{
v.IsSelected = false;
}
VertexView on_down = VertexHitTest(new Point(e.X, e.Y));
if (on_down != null)
{
on_down.Raise_MouseDown();
}
EdgeView on_click = EdgeHitTest(new Point(e.X, e.Y));
if (on_click != null)
{
on_click.Raise_MouseClick();
}
Refresh();
}
