Illustration of the results for the Pascucci benchmark (Pascucci et al. 2004). The left panel shows a cut through the central edge-on plane of the dust density distribution discretized on a 3D Voronoi grid with one million cells randomly placed according to a 1/r distribution. The other panels show the simulated spectral energy distribution (SED) for disk inclinations equal to 12.5° (center) and 77.5° (right), for optical depths τ = 0.1,1, and 10. Dots indicate benchmark reference points; solid lines represent our simulation results using the 3D Voronoi grid shown in the left panel.