private static GraphicsLibrary.RotationType PreviousRotation(GraphicsLibrary.RotationType rotation)
{
if ((int)rotation == 0)
{
return((GraphicsLibrary.RotationType) 3);
}
return(rotation - 1);
}
private static GraphicsLibrary.RotationType NextRotation(GraphicsLibrary.RotationType rotation)
{
if ((int)rotation == 3)
{
return(0);
}
return(rotation + 1);
}
