The Ray Tracer Challenge

Putting It Together

Let’s wrap this up with an example of how you can use groups in your scenes. You are going to build a model of a hexagon using cylinders and spheres, like this:

You’ll build this by first defining a single instance of each component: one sphere (to become the corners of the hexagon), and one cylinder (to become the edges). You’ll transform each into place once, and add them to a group. Then, you’ll create duplicates of that group, rotating each duplicate around the y axis until the whole hexagon is constructed.

Start by writing a function that creates the prototypical sphere component, scaling it by 25% and translating it -1 ...