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Code Issues Projects Releases Packages Wiki Activity Actions 8

pep8tify conditionals

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This commit is contained in:
Benjamin Peterson 2009-01-30 02:02:25 +00:00
parent 5da9a51d9d
commit 4a69410e9f
1 changed files with 58 additions and 29 deletions
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87
Lib/colorsys.py
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@ -44,12 +44,18 @@ def yiq_to_rgb(y, i, q):
r = y + 0.948262*i + 0.624013*q r = y + 0.948262*i + 0.624013*q
g = y - 0.276066*i - 0.639810*q g = y - 0.276066*i - 0.639810*q
b = y - 1.105450*i + 1.729860*q b = y - 1.105450*i + 1.729860*q
if r < 0.0: r = 0.0 if r < 0.0:
if g < 0.0: g = 0.0 r = 0.0
if b < 0.0: b = 0.0 if g < 0.0:
if r > 1.0: r = 1.0 g = 0.0
if g > 1.0: g = 1.0 if b < 0.0:
if b > 1.0: b = 1.0 b = 0.0
if r > 1.0:
r = 1.0
if g > 1.0:
g = 1.0
if b > 1.0:
b = 1.0
return (r, g, b) return (r, g, b)
@ -63,30 +69,42 @@ def rgb_to_hls(r, g, b):
minc = min(r, g, b) minc = min(r, g, b)
# XXX Can optimize (maxc+minc) and (maxc-minc) # XXX Can optimize (maxc+minc) and (maxc-minc)
l = (minc+maxc)/2.0 l = (minc+maxc)/2.0
if minc == maxc: return 0.0, l, 0.0 if minc == maxc:
if l <= 0.5: s = (maxc-minc) / (maxc+minc) return 0.0, l, 0.0
else: s = (maxc-minc) / (2.0-maxc-minc) if l <= 0.5:
s = (maxc-minc) / (maxc+minc)
else:
s = (maxc-minc) / (2.0-maxc-minc)
rc = (maxc-r) / (maxc-minc) rc = (maxc-r) / (maxc-minc)
gc = (maxc-g) / (maxc-minc) gc = (maxc-g) / (maxc-minc)
bc = (maxc-b) / (maxc-minc) bc = (maxc-b) / (maxc-minc)
if r == maxc: h = bc-gc if r == maxc:
elif g == maxc: h = 2.0+rc-bc h = bc-gc
else: h = 4.0+gc-rc elif g == maxc:
h = 2.0+rc-bc
else:
h = 4.0+gc-rc
h = (h/6.0) % 1.0 h = (h/6.0) % 1.0
return h, l, s return h, l, s
def hls_to_rgb(h, l, s): def hls_to_rgb(h, l, s):
if s == 0.0: return l, l, l if s == 0.0:
if l <= 0.5: m2 = l * (1.0+s) return l, l, l
else: m2 = l+s-(l*s) if l <= 0.5:
m2 = l * (1.0+s)
else:
m2 = l+s-(l*s)
m1 = 2.0*l - m2 m1 = 2.0*l - m2
return (_v(m1, m2, h+ONE_THIRD), _v(m1, m2, h), _v(m1, m2, h-ONE_THIRD)) return (_v(m1, m2, h+ONE_THIRD), _v(m1, m2, h), _v(m1, m2, h-ONE_THIRD))
def _v(m1, m2, hue): def _v(m1, m2, hue):
hue = hue % 1.0 hue = hue % 1.0
if hue < ONE_SIXTH: return m1 + (m2-m1)*hue*6.0 if hue < ONE_SIXTH:
if hue < 0.5: return m2 return m1 + (m2-m1)*hue*6.0
if hue < TWO_THIRD: return m1 + (m2-m1)*(TWO_THIRD-hue)*6.0 if hue < 0.5:
return m2
if hue < TWO_THIRD:
return m1 + (m2-m1)*(TWO_THIRD-hue)*6.0
return m1 return m1
@ -99,29 +117,40 @@ def rgb_to_hsv(r, g, b):
maxc = max(r, g, b) maxc = max(r, g, b)
minc = min(r, g, b) minc = min(r, g, b)
v = maxc v = maxc
if minc == maxc: return 0.0, 0.0, v if minc == maxc:
return 0.0, 0.0, v
s = (maxc-minc) / maxc s = (maxc-minc) / maxc
rc = (maxc-r) / (maxc-minc) rc = (maxc-r) / (maxc-minc)
gc = (maxc-g) / (maxc-minc) gc = (maxc-g) / (maxc-minc)
bc = (maxc-b) / (maxc-minc) bc = (maxc-b) / (maxc-minc)
if r == maxc: h = bc-gc if r == maxc:
elif g == maxc: h = 2.0+rc-bc h = bc-gc
else: h = 4.0+gc-rc elif g == maxc:
h = 2.0+rc-bc
else:
h = 4.0+gc-rc
h = (h/6.0) % 1.0 h = (h/6.0) % 1.0
return h, s, v return h, s, v
def hsv_to_rgb(h, s, v): def hsv_to_rgb(h, s, v):
if s == 0.0: return v, v, v if s == 0.0:
return v, v, v
i = int(h*6.0) # XXX assume int() truncates! i = int(h*6.0) # XXX assume int() truncates!
f = (h*6.0) - i f = (h*6.0) - i
p = v*(1.0 - s) p = v*(1.0 - s)
q = v*(1.0 - s*f) q = v*(1.0 - s*f)
t = v*(1.0 - s*(1.0-f)) t = v*(1.0 - s*(1.0-f))
i = i%6 i = i%6
if i == 0: return v, t, p if i == 0:
if i == 1: return q, v, p return v, t, p
if i == 2: return p, v, t if i == 1:
if i == 3: return p, q, v return q, v, p
if i == 4: return t, p, v if i == 2:
if i == 5: return v, p, q return p, v, t
if i == 3:
return p, q, v
if i == 4:
return t, p, v
if i == 5:
return v, p, q
# Cannot get here # Cannot get here