''' Purpose: support image copy transformation
'''

# This module basically defines functions that we want to use when we want to
# create a copy of an image.
# We want to define three functions:
    # 1. Dimensions (width/height)
    # 2. Color (pixels - r,g,b)
    # 3. Locations (spots in image (x,y))

def size( original ) :
    ''' Purpose: return the size of the new image when performing a copy
    '''

    nw, nh = original.size # gives us the dimensions (width and height of the original image)
    return ( nw , nh )

def color( opixel ) :
    ''' Purpose: return the new pixel when performing a copy of opixel
    '''

    npixel = opixel # We want the same colors as the original image's colors!
    return npixel

def where( nspot, original = None ) :
    ''' Purpose: return the correspondent of nspot in the original when
            doing a copy
    '''
    ospot = nspot
    return ospot



if ( __name__ == '__main__' ) :

    import url
    from manip import manip # from manip.py import the manip function
    
    # get web image of interest
    link = "http://www.cs.virginia.edu/~cs1112/images/mandrill/full.png"

    original = url.get_image( link )

    original.show()

    new_image = manip( original, size, color, where ) # Pass in the copy.py functions
                                                      # functions to manipulate the image

    new_image.show()