def test_plane():
bounds = Box([(0, 3), (0, 3), (0, 3)])
plane = Plane((1.5, 1.5, 1.5), (1, 1, 1), bounds)
field = set(bounds.render())
points = field - set(plane.render())
layers = draw_layers(points, on='#', off='-')
assert_equal(
'\n\n'.join(layers),
dedent('''
##--
###-
####
####
#---
##--
###-
####
----
#---
##--
###-
----
----
#---
##--
''').strip(),
)
def test_plane_sphere_boolean():
# Draw a sphere and slice off the top half.
sphere = Sphere((0, 0, 0), 3)
plane = Plane((0, 0, 0), (0, 0, 1), sphere.bounds())
points = set(sphere.render()) - set(plane.render())
layers = draw_layers(points, on='#', off='-')
assert_equal(
'\n\n'.join(layers),
dedent('''
--#--
-###-
#####
-###-
--#--
-###-
#####
#####
#####
-###-
''').strip(),
)