def test_maximum_recursion_depth_color_at():
w = World().default()
s = Plane()
s.material.reflective = 0.5
s.set_transform(Translation(0, -1, 0))
w.objects.append(s)
r = Ray(Point(0, 0, -3), Vector(0, -math.sqrt(2) / 2, math.sqrt(2) / 2))
i = Intersection(math.sqrt(2), s)
comps = i.prepare_computation(r)
color = w.reflected_color(comps, 0)
assert color == Color(0, 0, 0)
def test_shade_hit_reflective():
w = World().default()
s = Plane()
s.material.reflective = 0.5
s.set_transform(Translation(0, -1, 0))
w.objects.append(s)
r = Ray(Point(0, 0, -3), Vector(0, -math.sqrt(2) / 2, math.sqrt(2) / 2))
i = Intersection(math.sqrt(2), s)
comps = i.prepare_computation(r)
c = w.shade_hit(comps)
assert c == Color(0.87677, 0.92436, 0.82918)
def test_reflected_color():
w = World().default()
s = Plane()
s.material.reflective = 0.5
s.set_transform(Translation(0, -1, 0))
w.objects.append(s)
r = Ray(Point(0, 0, -3), Vector(0, -math.sqrt(2) / 2, math.sqrt(2) / 2))
i = Intersection(math.sqrt(2), s)
comps = i.prepare_computation(r)
c = w.reflected_color(comps)
print(c)
assert c == Color(0.19032, 0.2379, 0.14274)
def test_mutually_reflective_color_at():
w = World()
w.light = PointLight(Point(0, 0, 0), Color(1, 1, 1))
lower = Plane()
lower.material.reflective = 1
lower.set_transform(Translation(0, -1, 0))
w.objects.append(lower)
upper = Plane()
upper.material.reflective = 1
upper.set_transform(Translation(0, 1, 0))
w.objects.append(upper)
r = Ray(Point(0, 0, 0), Vector(0, 1, 0))
assert w.color_at(r) is not None
def shade_hit_transparent():
w = World().default()
floor = Plane()
floor.set_transform(Translation(0, -1, 0))
floor.material.transparency = 0.5
floor.material.refractive_index = 1.5
w.objects.append(floor)
ball = Sphere()
ball.material.color = Color(1, 0, 0)
ball.material.ambient = 0.5
ball.set_transform(Translation(0, -3.5, -0.5))
w.objects.append(ball)
r = Ray(Point(0, 0, -3), Vector(0, -math.sqrt(2) / 2, math.sqrt(2) / 2))
xs = Intersections(Intersection(math.sqrt(2), floor))
comps = xs[0].prepare_computations(r, xs)
color = w.shade_hit(comps, 5)
assert color == Color(0.93642, 0.68642, 0.68642)
# - add: plane # material: # color: [ 1, 1, 1 ] # ambient: 1 # diffuse: 0 # specular: 0 # transform: # - [ rotate-x, 1.5707963267948966 ] # pi/2 # - [ translate, 0, 0, 500 ] p = Plane() p.material.color = Color(1, 1, 1) p.material.ambient = 1 p.material.diffuse = 0 p.material.specular = 0 p.set_transform(Translation(0, 0, 500) * RotationX(math.pi / 2)) w.objects.append(p) # # ====================================================== # # describe the elements of the scene # # ====================================================== # - add: sphere # material: # color: [ 0.373, 0.404, 0.550 ] # diffuse: 0.2 # ambient: 0.0 # specular: 1.0 # shininess: 200 # reflective: 0.7 # transparency: 0.7 # refractive-index: 1.5