HW2 Clarifications

A couple clarifications on Homework 2, Problem 2: first, we forgot to describe how the polygon P is specified. You can assume that you are given the vertices of the polygon in counterclockwise order. Also, when we say that a point is in the polygon we mean that it is actually inside the polygon, not just one of the vertices. So a viewpoint can be anywhere inside the polygon but has to be able to see every point in the polygon, not just the vertices.