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. Author manuscript; available in PMC: 2019 Dec 1.
Published in final edited form as: Adv Space Res. 2018 Aug 25;62(11):3214–3228. doi: 10.1016/j.asr.2018.08.022

Figure 1:

Figure 1:

Block diagram showing the various interactions between objects necessary to compute the illumination received at the surface or at an observer (O) from a number of sources. The arrows indicate line-of-sight evaluations through raytracing. Datasets of various types, resolutions, extents, and projections can be combined to create a single triangular mesh Wm to test against for raytracing. Any number of light sources (Ls) and occulting bodies (Bo) can be used. Either direct (Ed) or surface-scattered (Es) input can be evaluated.