def fromrgb(rgb):
""" http://www.rapidtables.com/convert/color/rgb-to-hsv.htm """
R = rgb[0] / 255 # norm to [0,1]
G = rgb[1] / 255 # norm to [0,1]
B = rgb[2] / 255 # norm to [0,1]
Imax = max_index(R, G, B)
Cmax = max(R, G, B)
Cmin = min(R, G, B)
delta = Cmax - Cmin
if delta == 0:
H = 0
else:
H = {
0: 60 * ((G - B) / delta % 6), # Max R
1: 60 * ((B - R) / delta + 2), # Max G
2: 60 * ((R - G) / delta + 4), # Max B
}[Imax]
V = Cmax
S = {True: 0, False: delta / Cmax if Cmax != 0 else 1}[Cmax == 0]
return [round(H), round(S * 100), round(V * 100)]
def fromrgb(rgb):
""" http://www.rapidtables.com/convert/color/rgb-to-hsl.htm """
R = rgb[0] / 255 # norm to [0,1]
G = rgb[1] / 255 # norm to [0,1]
B = rgb[2] / 255 # norm to [0,1]
Imax = max_index(R, G, B)
Cmax = max(R, G, B)
Cmin = min(R, G, B)
delta = Cmax - Cmin
if delta == 0:
H = 0
else:
H = {
0: 60 * ((G - B) / delta % 6), # Max R
1: 60 * ((B - R) / delta + 2), # Max G
2: 60 * ((R - G) / delta + 4), # Max B
}[Imax]
L = (Cmax + Cmin) / 2
S = {True: 0, False: delta / (1 - abs(2 * L - 1)) if L != 1 and L != 0 else delta}[delta == 0]
return [round(H), round(S * 100), round(L * 100)]
def circle(self, force=False):
# To calculate the circle based on the vectorial space of RGB.
# TODO: Add reference to paper about this
if self._circle is not None and not force:
return self._circle
base = ''
# copy of the rgb
rgb = self()
# create a dict to contain all the colors in the circle
circle = { k : [ 0 for i in range(3) ] for k in [ a + str(b) for b in (1,2) for a in _rgb_str ] + list(_cmy_str) }
# normalize the rgb values from 0 - 255, to 0 - 1
percents = [ i/255 for i in rgb ]
# The first thing, is to verify, which type of color is this
# get the index of the dominant color
dominant = vector.max_index(rgb)
# REDS
if dominant == 0: # Meaning this color is primarily red
# YELLOW
# If the green component is within the range 10% of the red,
# from the left is a yellow
if _in_range( percents[1], percents[0]-0.1, percents[0] ):
base = 'Y'
# MAGENTA
# If the blue component is within the range 10% of the red,
# from the left is a magenta
elif _in_range( percents[2], percents[0]-0.1, percents[0] ):
base = 'M'
# RED
else:
base = 'R'
# GREENS
elif dominant == 1: # Meaning this color is primarily green
# YELLOW
# If the red component is within the range 10% of the green,
# from the left is a yellow
if _in_range( percents[0], percents[1]-0.1, percents[1] ):
base = 'Y'
# CYAN
# If the blue component is within the range 10% of the green,
# from the left is a cyan
elif _in_range( percents[2], percents[1]-0.1, percents[1] ):
base = 'C'
# GREEN
else:
base = 'G'
# BLUES
elif dominant == 2: # Meaning this color is primarily blue
# MAGENTA
# If th red component is within the range 10% of the blue,
# from the left is a magenta
if _in_range( percents[0], percents[2]-0.1, percents[2] ):
base = 'M'
# CYAN
# If the green component is within the range 10% of the blue,
# from the left is a cyan
elif _in_range( percents[1], percents[2]-0.1, percents[2] ):
base = 'C'
else:
base = 'B'
self._identity = base
if base in _rgb_str:
if base == 'R':
val = _add_color( 'R', circle, rgb )
green = _rotate_color('R', 'G', rgb)
_add_color( 'G', circle, green )
blue = _rotate_color('R', 'B', rgb)
_add_color( 'B', circle, blue )
elif base == 'G':
val = _add_color( 'G', circle, rgb )
red = _rotate_color('G', 'R', rgb)
_add_color( 'R', circle, red )
blue = _rotate_color('G', 'B', rgb)
_add_color( 'B', circle, blue )
elif base =='B':
val = _add_color( 'B', circle, rgb )
green = _rotate_color('B', 'G', rgb)
_add_color( 'G', circle, green )
red = _rotate_color('B', 'R', rgb)
_add_color( 'R', circle, red )
self._identity += str(val)
yellow = _get_color('Y', circle, val)
_add_color( 'Y', circle, yellow )
cyan = _get_color('C', circle, val)
_add_color( 'C', circle, cyan )
magenta = _get_color('M', circle, val)
_add_color( 'M', circle, magenta )
elif base in _cmy_str:
if base == 'C':
_add_color( 'C', circle, rgb )
yellow = _rotate_color('C', 'Y', rgb)
_add_color( 'Y', circle, yellow )
magenta = _rotate_color('C', 'M', rgb)
_add_color( 'M', circle, magenta )
elif base == 'Y':
_add_color( 'Y', circle, rgb )
cyan = _rotate_color('Y', 'C', rgb)
_add_color( 'C', circle, cyan )
magenta = _rotate_color('Y', 'M', rgb)
_add_color( 'M', circle, magenta )
elif base == 'M':
_add_color( 'M', circle, rgb )
cyan = _rotate_color('M', 'C', rgb)
_add_color( 'C', circle, cyan )
yellow = _rotate_color('M', 'Y', rgb)
_add_color( 'Y', circle, yellow )
red = _get_color('R', circle)
_add_color( 'R', circle, red )
green = _get_color('G', circle)
_add_color( 'G', circle, green )
blue = _get_color('B', circle)
_add_color( 'B', circle, blue )
result = []
result.append(circle['R1'])
result.append(circle['Y'])
result.append(circle['G1'])
if circle['G1'] != circle['G2']:
result.append(circle['G2'])
result.append(circle['C'])
result.append(circle['B2'])
if circle['B1'] != circle['B2']:
result.append(circle['B1'])
result.append(circle['M'])
if circle['R1'] != circle['R2']:
result.append(circle['R2'])
self._circle = result
return result
