''' Module locate: provides support for locating the spot for a
        pixel grab
'''

def iso( spot, w, h ) :
    ''' Returns a new location (x, y), where x, and y are the two 
        coordinates of spot
    '''

    x, y = spot

    return ( x, y )

def mirror( spot, w, h ) :
    ''' Returns a new location (a, b), that is the x-axis mirroring
        of location spot (x, y) in a w x h image
    '''

    x, y = spot

    a, b = (w - 1) - x, y

    return (a, b)

def flip( p, w, h ) :
    ''' Returns a new location (a, b), that is the y-axis flipping
        of location spot (x, y) in a w x h image
    '''

    x, y = spot

    a, b = x, (h - 1) - y

    return (a, b)

def ccw( p, w, h ) : 
    ''' Returns a new location (a, b), that is a counter-clockwise
        rotation of spot (x, y) in a w x h image
    '''

    pass