def default(cls):
world = cls()
world.light = PointLight(Point(-10, 10, -10), Color(1, 1, 1))
m = Material()
m.color = Color(0.8, 1.0, 0.6)
m.diffuse = 0.7
m.specular = 0.2
s1 = Sphere()
s1.set_material(m)
s2 = Sphere()
s2.set_transform(Scaling(0.5, 0.5, 0.5))
world.objects.extend([s1, s2])
return world
def test_lighting_with_pattern_applied(self):
m = Material()
m.pattern = StripePattern(Color.white(), Color.black())
m.ambient = 1
m.diffuse = 0
m.specular = 0
eyev = Vector(0, 0, -1)
normalv = Vector(0, 0, -1)
light = PointLight(Point(0, 0, -10), Color.white())
c1 = m.lighting(Sphere(), light, Point(0.9, 0, 0), eyev, normalv, False)
c2 = m.lighting(Sphere(), light, Point(1.1, 0, 0), eyev, normalv, False)
assert c1 == Color.white()
assert c2 == Color.black()
def test_lighting_pattern():
s = Sphere()
m = Material()
m.pattern = StripePattern(Color(1, 1, 1), Color(0, 0, 0))
m.ambient = 1
m.diffuse = 0
m.specular = 0
eyev = Vector(0, 0, -1)
normalv = Vector(0, 0, -1)
light = PointLight(Point(0, 0, -10), Color(1, 1, 1))
c1 = m.lighting(s, light, Point(0.9, 0, 0), eyev, normalv, False)
c2 = m.lighting(s, light, Point(1.1, 0, 0), eyev, normalv, False)
assert c1 == Color(1, 1, 1)
assert c2 == Color(0, 0, 0)
def test_default_world():
light = PointLight(Point(-10, 10, -10), Color(1, 1, 1))
s1 = Sphere()
m = Material()
m.color = Color(0.8, 1.0, 0.6)
m.diffuse = 0.7
m.specular = 0.2
s1.set_material(m)
s2 = Sphere()
t = Scaling(0.5, 0.5, 0.5)
s2.set_transform(t)
w = World.default()
assert w.light == light
assert s1 in w.objects
assert s2 in w.objects
# intensity: [ 0.2, 0.2, 0.2 ] # # ====================================================== # # define some constants to avoid duplication # # ====================================================== # - define: white-material # value: # color: [ 1, 1, 1 ] # diffuse: 0.7 # ambient: 0.1 # specular: 0.0 # reflective: 0.1 white = Material() white.color = Color(1, 1, 1) white.diffuse = 0.7 white.ambient = 0.1 white.specular = 0.0 white.reflective = 0.1 # - define: blue-material # extend: white-material # value: # color: [ 0.537, 0.831, 0.914 ] blue = copy.deepcopy(white) blue.color = Color(0.537, 0.831, 0.914) # - define: red-material # extend: white-material # value: # color: [ 0.941, 0.322, 0.388 ] red = copy.deepcopy(white) red.color = Color(0.941, 0.322, 0.388)