def write(self, pbrtwriter: PbrtWriter):
pbrtwriter.makeNamedMedium("Rayleigh", "string type", "homogeneous",
"rgb sigma_s", self.I_s, "rgb sigma_a",
[0, 0, 0])
pbrtwriter.mediumInterface("", "Rayleigh")
def write(self, pbrtwriter: PbrtWriter):
I_s = tuple([self.I_s] * 3)
I_a = tuple([self.I_a] * 3)
pbrtwriter.makeNamedMedium("Fog", "string type", "homogeneous",
"rgb sigma_s", I_s, "rgb sigma_a", I_a)
pbrtwriter.mediumInterface("", "Fog")