def test_assigning_a_material():
# Given
s = MockShape()
m = Material()
m.ambient = 1
# When
s.material = m
# Then
assert s.material == m
def test_lighting_with_the_eye_in_the_path_of_the_reflection_vector():
# Given
m = Material()
position = Point(0, 0, 0)
eyev = Vector(0, -sqrt(2) / 2, -sqrt(2) / 2)
normalv = Vector(0, 0, -1)
light = PointLight(Point(0, 10, -10), Color(1, 1, 1))
object = Sphere()
# When
result = m.lighting(object, light, position, eyev, normalv)
# Then
assert result == Color(1.6364, 1.6364, 1.6364)
def test_lighting_with_the_light_behind_the_surface():
# Given
m = Material()
position = Point(0, 0, 0)
eyev = Vector(0, 0, -1)
normalv = Vector(0, 0, -1)
light = PointLight(Point(0, 0, 10), Color(1, 1, 1))
object = Sphere()
# When
result = m.lighting(object, light, position, eyev, normalv)
# Then
assert result == Color(0.1, 0.1, 0.1)
def test_lighting_with_the_eye_between_light_and_surface_eye_offset_45degree():
# Given
m = Material()
position = Point(0, 0, 0)
eyev = Vector(0, sqrt(2) / 2, sqrt(2) / 2)
normalv = Vector(0, 0, -1)
light = PointLight(Point(0, 0, -10), Color(1, 1, 1))
object = Sphere()
# When
result = m.lighting(object, light, position, eyev, normalv)
# Then
assert result == Color(1.0, 1.0, 1.0)
def test_lighting_with_the_eye_opposite_surface_light_offset_45degree():
# Given
m = Material()
position = Point(0, 0, 0)
eyev = Vector(0, 0, -1)
normalv = Vector(0, 0, -1)
light = PointLight(Point(0, 10, -10), Color(1, 1, 1))
object = Sphere()
# When
result = m.lighting(object, light, position, eyev, normalv)
# Then
assert result == Color(0.7364, 0.7364, 0.7364)
def test_the_default_material():
# Given
s = MockShape()
# When
m = s.material
# Then
assert m == Material()
def test_the_default_material():
# Given
m = Material()
# Then
assert m.color == Color(1, 1, 1)
assert m.ambient == 0.1
assert m.diffuse == 0.9
assert m.specular == 0.9
assert m.shininess == 200.0
def test_lighting_with_a_pattern_applied():
# Given
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))
object = Sphere()
# When
c1 = m.lighting(object, light, Point(0.9, 0, 0), eyev, normalv)
c2 = m.lighting(object, light, Point(1.1, 0, 0), eyev, normalv)
# Then
assert c1 == Color(1, 1, 1)
assert c2 == Color(0, 0, 0)
from raytracerchallenge_python.plane import Plane
from raytracerchallenge_python.cube import Cube
# from raytracerchallenge_python.stripe_pattern import StripePattern
# from raytracerchallenge_python.checkers_pattern import CheckersPattern
# from raytracerchallenge_python.ring_pattern import RingPattern
if __name__ == "__main__":
# pattern = StripePattern(Color(1, 0, 0), Color(1, 1, 1))
# pattern = CheckersPattern(Color(1, 0, 0), Color(1, 1, 1))
pattern = GradientPattern(Color(1, 0, 0), Color(1, 1, 1))
# pattern = RingPattern(Color(1, 0, 0), Color(1, 1, 1))
pattern.transform = scaling(0.2, 0.2, 0.2)
floor = Plane()
floor.material = Material()
floor.material.color = Color(1, 0.9, 0.9)
# floor.material.pattern = pattern
backdrop = Plane()
backdrop.transform = \
rotation_y(pi / 3) * translation(0, 0, 5) * rotation_x(pi / 2)
backdrop2 = Plane()
backdrop2.transform = \
rotation_y(-pi / 3) * translation(0, 0, 5) * rotation_x(pi / 2)
middle = Sphere()
# middle = glass_sphere()
middle.transform = translation(-0.5, 1, 0.5)
# middle.reflective = 1.0
def __init__(self):
self.transform = identity_matrix()
self.material = Material()
self.parent = None
from raytracerchallenge_python.intersection import Intersections
from raytracerchallenge_python.canvas import Canvas
from raytracerchallenge_python.material import Material
from raytracerchallenge_python.point_light import PointLight
if __name__ == "__main__":
ray_origin = Point(0, 0, -5)
wall_z = 10
wall_size = 7.0
canvas_pixcels = 100
pixel_size = wall_size / canvas_pixcels
half = wall_size / 2
canvas = Canvas(canvas_pixcels, canvas_pixcels)
shape = Sphere()
shape.material = Material()
shape.material.color = Color(1, 0.2, 1)
light_position = Point(-10, 10, -10)
light_color = Color(1, 1, 1)
light = PointLight(light_position, light_color)
# for each row of pixels in the canvas
for y in range(canvas_pixcels):
# compute the world y coordinate (top = +half, bottom = -half)
world_y = half - pixel_size * y
for x in range(canvas_pixcels):
# compute the world x coordinate (left = -half, right = half)
world_x = -half + pixel_size * x
def test_material_equality_with_different_materials():
m1 = Material()
m2 = Material()
m2.ambient = 1
assert m1 != m2
def test_material_equality_with_identical_materials():
m1 = Material()
m2 = Material()
assert m1 == m2
def test_transparency_and_refractive_index_for_the_default_material():
# Given
m = Material()
# Then
assert m.transparency == 0.0
assert m.refractive_index == 1.0
def test_reflectivity_for_the_default_material():
# Given
m = Material()
# Then
assert m.reflective == 0.0