def test_cmyk_to_rgb():
"""Test translation function cmyk_to_rgb"""
cmyk = colormodel.CMYK(0.0, 0.0, 0.0, 1.2356)
rgb = a3.cmyk_to_rgb(cmyk)
cornelltest.assert_equals(252, rgb.red)
cornelltest.assert_equals(252, rgb.green)
cornelltest.assert_equals(252, rgb.blue)
cmyk = colormodel.CMYK(7.1254, 100.0, 25.569, .123456032934)
rgb = a3.cmyk_to_rgb(cmyk)
cornelltest.assert_equals(237, rgb.red)
cornelltest.assert_equals(0, rgb.green)
cornelltest.assert_equals(190, rgb.blue)
cmyk = colormodel.CMYK(63.409, 2.0000001, 100.0, 83.099)
rgb = a3.cmyk_to_rgb(cmyk)
cornelltest.assert_equals(16, rgb.red)
cornelltest.assert_equals(42, rgb.green)
cornelltest.assert_equals(0, rgb.blue)
cmyk = colormodel.CMYK(100.0, 54.99999, 3.694286, 100.0)
rgb = a3.cmyk_to_rgb(cmyk)
cornelltest.assert_equals(0, rgb.red)
cornelltest.assert_equals(0, rgb.green)
cornelltest.assert_equals(0, rgb.blue)
def test_str5_color():
"""Test the str5 functions for cmyk and hsv."""
cornelltest.assert_equals('(98.45, 25.36, 99.99, 21.99)',\
a3.str5_cmyk(colormodel.CMYK(98.448, 25.362, 99.99, 21.994)));
cornelltest.assert_equals('(32.33, 6.355, 0.001, 10.01)',\
a3.str5_cmyk(colormodel.CMYK(32.3256, 6.3546, .0013, 10.013567)))
def test_cmyk_to_rgb():
"""Test translation function cmyk_to_rgb"""
cmyk = colormodel.CMYK(0.0, 0.0, 0.0, 0.0)
rgb = a3.cmyk_to_rgb(cmyk)
cornelltest.assert_equals(255, rgb.red)
cornelltest.assert_equals(255, rgb.green)
cornelltest.assert_equals(255, rgb.blue)
cmyk = colormodel.CMYK(100.0, 100.0, 100.0, 100.0)
rgb = a3.cmyk_to_rgb(cmyk)
cornelltest.assert_equals(0, rgb.red)
cornelltest.assert_equals(0, rgb.green)
cornelltest.assert_equals(0, rgb.blue)
cmyk = colormodel.CMYK(34.0, 12.5432, 66.666666, 1.0)
rgb = a3.cmyk_to_rgb(cmyk)
cornelltest.assert_equals(167, rgb.red)
cornelltest.assert_equals(221, rgb.green)
cornelltest.assert_equals(84, rgb.blue)
cmyk = colormodel.CMYK(72.4444, 65.0, 90.1, 56.23)
rgb = a3.cmyk_to_rgb(cmyk)
cornelltest.assert_equals(31, rgb.red)
cornelltest.assert_equals(39, rgb.green)
cornelltest.assert_equals(11, rgb.blue)
cmyk = colormodel.CMYK(0.0, 0.0, 0.0, 100.0)
rgb = a3.cmyk_to_rgb(cmyk)
cornelltest.assert_equals(0, rgb.red)
cornelltest.assert_equals(0, rgb.green)
cornelltest.assert_equals(0, rgb.blue)
def test_cmyk_to_rgb():
"""Test translation function cmyk_to_rgb"""
#Test cmyk_to_rgb() when K = 1:
cmyk = colormodel.CMYK(10, 11, 12, 100)
rgb = a3.cmyk_to_rgb(cmyk)
cunittest.assert_equals(0, rgb.red)
cunittest.assert_equals(0, rgb.green)
cunittest.assert_equals(0, rgb.blue)
#Test cmyk_to_rgb() when C, M, or Y = 0:
cmyk = colormodel.CMYK(0, 11, 12, 0)
rgb = a3.cmyk_to_rgb(cmyk)
cunittest.assert_equals(255, rgb.red)
cunittest.assert_equals(227, rgb.green)
cunittest.assert_equals(224, rgb.blue)
cmyk = colormodel.CMYK(10, 0, 12, 0)
rgb = a3.cmyk_to_rgb(cmyk)
cunittest.assert_equals(230, rgb.red)
cunittest.assert_equals(255, rgb.green)
cunittest.assert_equals(224, rgb.blue)
cmyk = colormodel.CMYK(10, 11, 0, 0)
rgb = a3.cmyk_to_rgb(cmyk)
cunittest.assert_equals(230, rgb.red)
cunittest.assert_equals(227, rgb.green)
cunittest.assert_equals(255, rgb.blue)
#General Test Case
cmyk = colormodel.CMYK(4, 20, 7, 18.63)
rgb = a3.cmyk_to_rgb(cmyk)
cunittest.assert_equals(199, rgb.red)
cunittest.assert_equals(166, rgb.green)
cunittest.assert_equals(193, rgb.blue)
def rgb_to_cmyk(rgb):
"""Returns: color rgb in space CMYK, with the most black possible.
Formulae from en.wikipedia.org/wiki/CMYK_color_model.
Parameter rgb: the color to convert to a CMYK object
Precondition: rgb is an RGB object"""
# Divide all rgb values by 255.0 to change range from 0..255.0 to 0..1.0
r = rgb.red / 255.0
g = rgb.green / 255.0
b = rgb.blue / 255.0
#Subtract all rgb values from 1
c = 1 - r
m = 1 - g
y = 1 - b
#Change all CMYK values to 0 except black
if c == 1 and m == 1 and y == 1:
return colormodel.CMYK(0.0, 0.0, 0.0, 1.0 * 100.0)
else:
k = min(c, m, y)
cy = ((c - k) / (1 - k)) * 100.0
mag = ((m - k) / (1 - k)) * 100.0
yell = ((y - k) / (1 - k)) * 100.0
return colormodel.CMYK(cy, mag, yell, k * 100.0)
def rgb_to_cmyk(rgb):
"""Returns: color rgb in space CMYK, with the most black possible.
Formulae from en.wikipedia.org/wiki/CMYK_color_model.
Parameter rgb: the color to convert to a CMYK object
Precondition: rgb is an RGB object"""
# The RGB numbers are in the range 0..255.
cmyk = colormodel.CMYK(0.0, 0.0, 0.0, 0.0)
c = 1 - (rgb.red / 255.0)
m = 1 - (rgb.green / 255.0)
y = 1 - (rgb.blue / 255.0)
if c == 1.0 and m == 1.0 and y == 1.0:
cmyk = colormodel.CMYK(0.0, 0.0, 0.0, 100.0)
else:
k = min(c, m, y)
cmyk.cyan = (c - k) / (1 - k) * 100
cmyk.magenta = (m - k) / (1 - k) * 100
cmyk.yellow = (y - k) / (1 - k) * 100
cmyk.black = k * 100
return cmyk
def test_str5_color():
"""Test the str5 functions for cmyk and hsv."""
cornelltest.assert_equals(
'(98.45, 25.36, 72.80, 1.000)',
a3.str5_cmyk(colormodel.CMYK(98.448, 25.362, 72.8, 1.0)))
cornelltest.assert_equals(
'(1.000, 100.0, 23.12, 54.44)',
a3.str5_cmyk(colormodel.CMYK(1, 100, 23.12345, 54.435)))
cornelltest.assert_equals('(98.45, 0.000, 0.123)',
a3.str5_hsv(colormodel.HSV(98.448, 0, .123456)))
cornelltest.assert_equals('(312.0, 0.500, 0.568)',
a3.str5_hsv(colormodel.HSV(312, 0.5, 0.56789)))
def test_str5_color():
"""Test the str5 functions for cmyk and hsv."""
cornelltest.assert_equals(
'(98.45, 25.36, 72.80, 1.000)',
a3.str5_cmyk(colormodel.CMYK(98.448, 25.362, 72.8, 1.0)))
cornelltest.assert_equals(
'(100.0, 0.225, 83.50, 0.000)',
a3.str5_cmyk(colormodel.CMYK(100.0, .2245, 83.5, 0.0)))
cornelltest.assert_equals(
'(56.00, 0.000, 0.987)',
a3.str5_hsv(colormodel.HSV(55.999, 0.0, 0.9874234353442)))
cornelltest.assert_equals(
'(250.4, 1.000, 0.488)',
a3.str5_hsv(colormodel.HSV(250.356, 1.0, .4878325345)))
def rgb_to_cmyk(rgb):
"""Returns: color rgb in space CMYK, with the most black possible.
Formulae from en.wikipedia.org/wiki/CMYK_color_model.
Precondition: rgb is an RGB object"""
assert (type(rgb) == colormodel.RGB), ('Value ' + ` rgb ` +
' is not an RGB object')
R = rgb.red / 255.0
G = rgb.green / 255.0
B = rgb.blue / 255.0
C = 1 - R
M = 1 - G
Y = 1 - B
if C == 1 and M == 1 and Y == 1:
C = 0
Y = 0
M = 0
K = 1
else:
K = min(C, M, Y)
C = (C - K) / (1 - K)
M = (M - K) / (1 - K)
Y = (Y - K) / (1 - K)
C = C * 100.0
M = M * 100.0
Y = Y * 100.0
K = K * 100.0
return colormodel.CMYK(C, M, Y, K)
def on_cmyk_press(self,c,m,y,k):
"""Call back to cmyk button"""
self.cmyk = colormodel.CMYK(c, m, y, k)
temp = a3.cmyk_to_rgb(self.cmyk)
assert (temp == None or type(temp) == colormodel.RGB), 'cmyk_to_rgb does not return a RGB object'
self.rgb = self.rgb if temp is None else temp
self.hsv = a3.rgb_to_hsv(self.rgb)
assert (self.hsv == None or type(self.hsv) == colormodel.HSV), 'rgb_to_hsv does not return a HSV object'
self.update()
def test_cmyk_to_rgb():
"""Test translation function cmyk_to_rgb"""
cmyk= colormodel.CMYK(100.0, 100.0, 100.0, 100.0);
rgb = a3.cmyk_to_rgb(cmyk);
cornelltest.assert_equals( 0, rgb.red)
cornelltest.assert_equals( 0, rgb.green)
cornelltest.assert_equals( 0, rgb.blue)
cmyk= colormodel.CMYK(0.000, 000.0, 000.0, 000.0);
rgb = a3.cmyk_to_rgb(cmyk);
cornelltest.assert_equals( 255, rgb.red)
cornelltest.assert_equals( 255, rgb.green)
cornelltest.assert_equals( 255, rgb.blue)
cmyk= colormodel.CMYK(50.00, 50.00, 50.00, 50.00);
rgb = a3.cmyk_to_rgb(cmyk);
cornelltest.assert_equals( 63, rgb.red)
cornelltest.assert_equals( 63, rgb.green)
cornelltest.assert_equals( 63, rgb.blue)
def test_to_strings():
"""Test toString methods"""
#Test rgb_to_string:()
cunittest.assert_equals("(30, 240, 230)",
a3.rgb_to_string(colormodel.RGB(30, 240, 230)))
#Test cmyk_to_string()
cunittest.assert_equals("(10.00, 11.00, 20.00, 12.00)",
a3.cmyk_to_string(colormodel.CMYK(10, 11, 20, 12)))
#Test that cmyk_to_string() uses round5(), not `truncate5()`:
cunittest.assert_equals(
"(10.01, 11.00, 20.01, 12.00)",
a3.cmyk_to_string(colormodel.CMYK(10.005, 11.0045, 20.009, 12.001)))
#Test hsv_to_string()
cunittest.assert_equals("(100.0, 1.000, 1.000)",
a3.hsv_to_string(colormodel.HSV(100, 1, 1)))
#Test that hsv_to_string uses round5(), not `truncate5()`:
cunittest.assert_equals(
"(100.0, 0.500, 0.499)",
a3.hsv_to_string(colormodel.HSV(99.999, .4996, .4994)))
def on_cmyk_slide(self,c,m,y,k):
"""Call back to cmyk sliders"""
if not self.active:
return
cyan = c / 100.0
magenta = m / 100.0
yellow = y / 100.0
black = k / 100.0
self.cmyk = colormodel.CMYK(cyan, magenta, yellow, black)
temp = a3.cmyk_to_rgb(self.cmyk)
assert (temp == None or type(temp) == colormodel.RGB), 'cmyk_to_rgb does not return a RGB object'
self.rgb = self.rgb if temp is None else temp
self.hsv = a3.rgb_to_hsv(self.rgb)
assert (self.hsv == None or type(self.hsv) == colormodel.HSV), 'rgb_to_hsv does not return a HSV object'
self.update()
