def testOpaqueness(self):
ims_opaque = RGBAImageSource(self.red,
self.green,
self.blue,
ConstantSource(),
RGBALayer(self.red,
self.green,
self.blue,
alpha_missing_value=255),
guarantees_opaqueness=True)
self.assertTrue(ims_opaque.isOpaque())
ims_notopaque = RGBAImageSource(
self.red, self.green, self.blue, ConstantSource(),
RGBALayer(self.red, self.green, self.blue,
alpha_missing_value=100))
self.assertFalse(ims_notopaque.isOpaque())
def setUp(self):
super(RGBAImageSourceTest, self).setUp()
basedir = os.path.dirname(volumina._testing.__file__)
self.data = numpy.load(os.path.join(basedir, 'rgba129x104.npy'))
self.red = _ArraySource2d(self.data[:, :, 0])
self.green = _ArraySource2d(self.data[:, :, 1])
self.blue = _ArraySource2d(self.data[:, :, 2])
self.alpha = _ArraySource2d(self.data[:, :, 3])
self.ims_rgba = RGBAImageSource(
self.red, self.green, self.blue, self.alpha,
RGBALayer(self.red, self.green, self.blue, self.alpha))
self.ims_rgb = RGBAImageSource(
self.red, self.green, self.blue, ConstantSource(),
RGBALayer(self.red, self.green, self.blue))
self.ims_rg = RGBAImageSource(self.red, self.green, ConstantSource(),
ConstantSource(),
RGBALayer(self.red, self.green))
self.ims_ba = RGBAImageSource(red=ConstantSource(),
green=ConstantSource(),
blue=self.blue,
alpha=self.alpha,
layer=RGBALayer(blue=self.blue,
alpha=self.alpha))
self.ims_a = RGBAImageSource(red=ConstantSource(),
green=ConstantSource(),
blue=ConstantSource(),
alpha=self.alpha,
layer=RGBALayer(alpha=self.alpha))
self.ims_none = RGBAImageSource(ConstantSource(), ConstantSource(),
ConstantSource(), ConstantSource(),
RGBALayer())
