Polarization degree maps for two inclinations of a disk with high optical density (τ = 10⁶). On the left are the linear polarization degree maps we calculated using SKIRT. The dust grain size is the same as the wavelength (1 μm), creating the intricate pattern of the polarization degree. On the right are cuts 1–6 through the maps along with results of various codes. Pinball (Watson & Henney 2001) in green, MCMax (Min et al. 2009) in black, MCFOST (Pinte et al. 2006) in blue, TORUS (Harries 2000) in dashed orange, and SKIRT in red. The data of the other codes were taken from the official website.