def CMYK_to_CMY(cobj, *args, **kwargs):
"""
Converts CMYK to CMY.
NOTE: CMYK and CMY values range from 0.0 to 1.0
"""
cmy_c = cobj.cmyk_c * (1.0 - cobj.cmyk_k) + cobj.cmyk_k
cmy_m = cobj.cmyk_m * (1.0 - cobj.cmyk_k) + cobj.cmyk_k
cmy_y = cobj.cmyk_y * (1.0 - cobj.cmyk_k) + cobj.cmyk_k
return CMYColor(cmy_c, cmy_m, cmy_y)
def RGB_to_CMY(cobj, *args, **kwargs):
"""
RGB to CMY conversion.
NOTE: CMYK and CMY values range from 0.0 to 1.0
"""
cmy_c = 1.0 - cobj.rgb_r
cmy_m = 1.0 - cobj.rgb_g
cmy_y = 1.0 - cobj.rgb_b
return CMYColor(cmy_c, cmy_m, cmy_y)
def test_conversion_to_cmy(self):
cmy = convert_color(self.color, CMYColor)
self.assertColorMatch(cmy, CMYColor(0.518, 0.216, 0.804))
def setUp(self):
self.color = CMYColor(0.518, 0.216, 0.804)
