CSCI 480/580 Lecture 13 - In-Class Problems

You will spend today’s class giving yourself a self-guided tour of the A2 skeleton code.

0. Find your A2 partner and log into a (single) computer. If you haven’t already, create your team (username1_username2_a2), and create your repository. Clone the repository locally and open up the WWURay/src folder in a file browser. Take a look at each file and, where applicable, read the comments at the top describing each submodule’s purpose.

1. For each of the following functions, read the spec to get an idea of its purpose, then determine which lecture(s) covers the material needed to implement it:

   • main
   • traceray
   • closest_intersect
   • Scenes.ray_intersect
   • determine_color
   • shade_light
   • is_shadowed

2. Draw a directed graph that describes the structure of the ray tracing code, in which each of the above functions is a node and a directed edge from node a to node b means “a calls b”. It’s ok if you’re a little fuzzy on some particulars at this stage: the goal is to understand the purpose of the major functions and how they fit together.