medium_ray_tracing_code_10.py

# ...
if is_shadowed:
    break

# RGB
illumination = np.zeros((3))

# ambiant
illumination += nearest_object['ambient'] * light['ambient']

# diffuse
illumination += nearest_object['diffuse'] * light['diffuse'] * np.dot(intersection_to_light, normal_to_surface)

# specular
intersection_to_camera = normalize(camera - intersection)
H = normalize(intersection_to_light + intersection_to_camera)
illumination += nearest_object['specular'] * light['specular'] * np.dot(normal_to_surface, H) ** (nearest_object['shininess'] / 4)

image[i, j] = np.clip(illumination, 0, 1)