def convert(components, src, dst, preserve_alpha=True):
if not preserve_alpha:
if src == 'Grayscale':
non_alpha = 1
elif src == 'CMYK':
non_alpha = 4
else:
non_alpha = 3
def omit_alpha(*c):
return c[:non_alpha]
components = stacked(omit_alpha, components)
if src == dst:
return components
path = _paths.get((src, dst), None)
if path is None:
return None
for s, d in zip(path[:-1], path[1:]):
func = conversions.get('%s>%s' % (s, d))
if not func:
return None
components = stacked(func, components)
return components
def convert(components, src, dst, preserve_alpha=True):
if not preserve_alpha:
if src == 'Grayscale':
non_alpha = 1
elif src == 'CMYK':
non_alpha = 4
else:
non_alpha = 3
def omit_alpha(*c):
return c[:non_alpha]
components = stacked(omit_alpha, components)
if src == dst:
return components
path = _paths.get((src, dst), None)
if path is None:
return None
for s, d in zip(path[:-1], path[1:]):
func = conversions.get('%s>%s' % (s, d))
if not func:
return None
components = stacked(func, components)
return components
def testImageConversions(self):
# test that f([x, y, ...]) = [f(x), f(y), ...] for rectangular image arrays.
for name, convert in colors.conversions.items():
if name.find("CMYK") < 0:
self._checkImageConversion(
4,
lambda p: vectorize(p, 1, lambda q: stacked(convert, q)))
def testImageConversions(self):
# test that f([x, y, ...]) = [f(x), f(y), ...] for rectangular image arrays.
for name, convert in colors.conversions.items():
if name.find('CMYK') < 0:
self._checkImageConversion(4, lambda p: vectorize(p, 1, lambda q: stacked(convert, q)))
