static public Rectangle Edge(this Rectangle src, XCOMlike dir_code)
{
switch (dir_code)
{
case XCOMlike.N: return(new Rectangle(src.Left, src.Top, src.Width, 1));
case XCOMlike.S: return(new Rectangle(src.Left, src.Bottom - 1, src.Width, 1));
case XCOMlike.W: return(new Rectangle(src.Left, src.Top, 1, src.Height));
case XCOMlike.E: return(new Rectangle(src.Right - 1, src.Top, 1, src.Height));
default: throw new InvalidOperationException("direction code out of range");
}
}
static public Point Anchor(this Rectangle src, XCOMlike dir_code) // Tk/Tcl anchor point for aligning a rectangle
{
switch (dir_code)
{
case XCOMlike.N: return(new Point(src.Width / 2 + src.Left, src.Top));
case XCOMlike.NE: return(new Point(src.Right - 1, src.Top));
case XCOMlike.E: return(new Point(src.Right - 1, src.Height / 2 + src.Top));
case XCOMlike.SE: return(new Point(src.Right - 1, src.Bottom - 1));
case XCOMlike.S: return(new Point(src.Width / 2 + src.Left, src.Bottom - 1));
case XCOMlike.SW: return(new Point(src.Left, src.Bottom - 1));
case XCOMlike.W: return(new Point(src.Left, src.Height / 2 + src.Top));
case XCOMlike.NW: return(new Point(src.Left, src.Top));
default: throw new InvalidOperationException("direction code out of range");
}
}
