Appendix A. C++ Vector Library

A decent vector library is useful in any 3D graphics application but doubly so when you’re using OpenGL ES 2.0, since it doesn’t provide functions for matrix math on its own. Review Section 2.8 for an overview of the library listed in this appendix. In brief, it’s template-based C++, and it’s composed solely of three simple header files. The library defines a set of types that are named after GLSL’s vector types.