middle.material.color = color(0.1, 1, 0.5)
middle.material.diffuse = 0.7
middle.material.specular = 0.3
middle.material.reflective = 0.1
middle.material.pattern = checkers_pattern(color(0.2, 0.5, 0.7),
color(0.8, 0.8, 0.2))
w.objects.append(middle)
right = sphere()
right.transform = translation(1.5, 0.5, -0.5) * scaling(0.5, 1.5, 0.5)
right.material = material()
right.material.color = color(0.5, 1, 0.1)
right.material.diffuse = 0.7
right.material.specular = 0.3
right.material.reflective = 0.15
right.material.pattern = ring_pattern(color(0.2, 0.5, 0.7),
color(0.8, 0.8, 0.2))
w.objects.append(right)
left = sphere()
left.transform = translation(-1.5, 0.33, -0.75) * scaling(0.33, 0.33, 0.33)
left.material = material()
left.material.color = color(1, 0.8, 0.1)
left.material.diffuse = 0.7
left.material.specular = 0.3
left.material.reflective = 0.1
left.material.pattern = gradient_pattern(color(0.7, 0.5, 0.7),
color(0, 0.8, 0.2))
w.objects.append(left)
cam = camera(1600, 800, pi / 2)
cam.transform = view_transform(point(0, 1.5, -5), point(0, 1, 0),
def step_impl(context):
context.pattern = ring_pattern(context.white, context.black)