Lighting Calculations Let p be a point in the OCS, n be the point's surface normal in the OCS, lues be the light direction in the WCS, and ewes be the eye position in the WCS. All four vectors are 4D homogeneous vectors with 0 or 1 in the last position, as appropriate. Let M be the object-to-world transform, V be the world-to-view transform, and P be the view-to-CCS transform. Which sets of transformed point, normal, light direction, and eye position below can be used together to compute the Phong illumination at the point? Select all that apply. • M Pocs, M nocs, lwes, ewes • M Pocs, M noes, Mlwes, Mewes • VM Pocs, VM nocs, Vlwes (ewes is not available) PVM Pocs, PVM nocs, PVlwes, PVewes (all followed by division by the fourth coordinate)

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Theoretical Computer Science

Usually, computer science seems like a practical field that involves studying, building, and working closely with computers. However, a subclass of this discipline also centers on the mathematical factors of the same. This is called theoretical computer science, and its focal point differentiates it from other branches of computer science: the rigorous mathematical approach it takes. This discipline falls under the umbrella of discrete mathematics, which is the study of countable or discontinuous mathematical structures.