The selection of the part in view for the torus, in panels (a) and (b), while considering also the disk, in panels (c) and (d). In panels (a) and (c) the source is shown exactly along the LOS direction, while in panels (b) and (d) the reference frame is rotated, for ease of visualization. The points in view are marked in cyan for the torus and in orange for the disk, while those not in view are marked in yellow for the torus and white for the disk. In this case, we used χ = 45°, ξ = 1°, R_max = 70 R_NS, and R_disk = 200 R_NS.