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_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
from raytracer.shapes import Sphere
from raytracer.tuples import Point, Color
if __name__ == '__main__':
ray_origin = Point(0, 0, -5)
wall_z = 10
wall_size = 7.0
canvas_pixels = 100
pixel_size = wall_size / canvas_pixels
half = wall_size / 2
canvas = Canvas(canvas_pixels, canvas_pixels)
red = Color(1, 0, 0)
sphere = Sphere()
m = Material()
m.color = Color(1, 0.2, 1)
sphere.material = m
light = PointLight(Point(-10, 10, -10), Color(1, 1, 1))
for y in range(canvas_pixels):
world_y = half - pixel_size * y
for x in range(canvas_pixels):
world_x = -half + pixel_size * x
position = Point(world_x, world_y, wall_z)
ray = Ray(ray_origin, (position - ray_origin).normalize())
hit = sphere.intersect(ray).hit()
if hit:
point = ray.position(hit.t)
normal = hit.object.normal_at(point)
# - add: light # at: [ -400, 50, -10 ] # 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: