def random_sphere():
r = random.random()
g = random.random()
b = random.random()
x = random.randint(0, 10) * (random.random() * 2 - 1)
y = random.randint(0, 10) * (random.random() * 2 - 1)
z = random.randint(0, 10) * (random.random() * 2 - 1)
sphere = Shapes.Sphere(1, 20, 20, (x, y, z), (r, g, b),(0, 0, 0))
return sphere
def prepared_scene(params):
# Invent matter
matte_white = Materials.Lambertian(Color.white)
matte_green = Materials.Lambertian(Color.green)
glass = Materials.Dielectric(Color.Color(0.73, 1.0, 0.82), 1.33)
mirror = Materials.Metallic(Color.Color(0.64, 1.0, 1.0), 0.0)
gunmetal = Materials.Metallic(Color.darkgrey, 0.03)
# Make a scene
scene = []
scene.append(Shapes.Plane(matte_white, Vector(0, 0, 0), up))
scene.append(Shapes.Sphere(matte_green, Vector(-3, 250, 3), 3))
scene.append(Shapes.Sphere(glass, Vector(4, 260, 5), 5))
scene.append(Shapes.Sphere(mirror, Vector(-5, 270, 7), 7))
scene.append(Shapes.Sphere(gunmetal, Vector(13, 285, 20), 20))
# Build a camera obscura
camera = Camera(Vector(0, 0, 3), Vector(0, 1, 0), up, params.resolution,
5.0, params.samples, params.depth, params.frustum)
return scene, camera