In this article I’ll talk about a very very important part of the 3D world. As you already know, this world behind of our devices’ screen is just an attempt to recreate the beauty and complexity of the human eye. To do that we use cameras, which is in the real world the simulation of the human eye. To construct cameras we use mathematical equations.
In this article I’ll treat about those cameras and equations behind it, the difference between convex and concave lenses, what are projections, matrices, quaternions and finally the famous Model View Projection Matrix. If you have some doubt, you know, just ask, I’ll be glad to help.