In this chapter, we learned the important ways to describe our VR world. If you want to think about it this way, we're learning the language of the matrix, and it even involves matrices. We learned about 3D coordinates, points, vectors, right-and left-handed worlds, and transforms.
We learned how all of these concepts come together and are rendered, and how the different web pages take that information and create a visual space out of it. We also learned to test!
To be able to test, we need something in the browser. To do that, we need to know not only how to describe the world in terms of numbers and rotations, but also how these numbers are used in building blocks. The next section will cover the keywords, components, and objects that React VR uses to describe the world.