private Point MoveWithNegative270Rotation(Point translation, CustomControl control)
{
double dx = Canvas.GetLeft(control) + translation.Y;
double dy = Canvas.GetTop(control) - translation.X;
Canvas.SetTop(control, dy);
Canvas.SetLeft(control, dx);
this.CheckControlBounds(control);
Point point = new Point(Canvas.GetLeft(control) + control.Width / 2,
Canvas.GetTop(control) + control.Height / 2);
return point;
}
private void CheckControlBounds(CustomControl control)
{
if ((Canvas.GetLeft(control) + control.Width / 2) < 0) Canvas.SetLeft(control, -control.Width / 2);
if (Canvas.GetLeft(control) + control.Width / 2 > this.vb.ActualWidth)
Canvas.SetLeft(control, this.vb.ActualWidth - control.Width / 2);
if ((Canvas.GetTop(control) + control.Height / 2) < 0) Canvas.SetTop(control, -control.Height / 2);
if (Canvas.GetTop(control) + control.Height / 2 > this.vb.ActualHeight)
Canvas.SetTop(control, this.vb.ActualHeight - control.Height / 2);
}