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import unittest
from numpy import array, ones
from kiva import agg
from test_utils import Utils
class RgbaTestCase(unittest.TestCase, Utils):
def test_init(self):
m = agg.Rgba()
def test_init1(self):
m = agg.Rgba(.5,.5,.5)
desired = array((.5,.5,.5,1.0))
self.assertRavelEqual(m.asarray(),desired)
def test_init_from_array1(self):
a = ones(3,'d') * .8
m = agg.Rgba(a)
desired = ones(4,'d') * .8
desired[3] = 1.0
result = m.asarray()
self.assertRavelEqual(result, desired)
def test_init_from_array2(self):
a = ones(4,'d') * .8
m = agg.Rgba(a)
desired = ones(4,'d') * .8
result = m.asarray()
self.assertRavelEqual(result, desired)
def test_init_from_array3(self):
a = ones(5,'d')
try:
m = agg.Rgba(a)
except ValueError:
pass # can't init from array that isn't 6 element.
def test_init_from_array4(self):
a = ones((2,3),'d')
try:
m = agg.Rgba(a)
except ValueError:
pass # can't init from array that isn't 1d.
def test_gradient(self):
first = agg.Rgba(0.,0.,0.,0.)
second = agg.Rgba(1.,1.,1.,1.)
actual = first.gradient(second,.5).asarray()
desired = array((.5,.5,.5,.5))
self.assertRavelEqual(actual, desired)
def test_pre(self):
first = agg.Rgba(1.0,1.0,1.0,0.5)
actual = first.premultiply().asarray()
desired = array((.5,.5,.5,.5))
self.assertRavelEqual(actual, desired)
if __name__ == "__main__":
unittest.main()
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