def scatter(self, r_in, rec):
condition = (rec.t > 0) & rec.front_face
scatter_direction = rec.normal + Vec3.random_unit_vector(len(r_in))
scattered = RayList(rec.p.mul_ndarray(condition),
scatter_direction.mul_ndarray(condition))
attenuation = Vec3List.from_array(condition) * self.albedo
return scattered, attenuation
def scatter(self, r_in: Ray, rec: HitRecord) \
-> Optional[Tuple[Ray, Color]]:
if not rec.front_face:
return None
scatter_direction: Vec3 = rec.normal + Vec3.random_unit_vector()
scattered = Ray(rec.p, scatter_direction, r_in.time())
attenuation = self.albedo.value(rec.u, rec.v, rec.p)
return scattered, attenuation
def scatter(self, r_in: Ray, rec: HitRecord) \
-> Optional[Tuple[Ray, Color]]:
scatter_direction: Vec3 = rec.normal + Vec3.random_unit_vector()
scattered = Ray(rec.p, scatter_direction)
attenuation = self.albedo
return scattered, attenuation