a beginner game developer here. I have recently taken upon learning about 3D game development and I am stuck on a simple matrix problem.
The image is found from this article: http://www.codinglabs.net/article_world_view_projection_matrix.aspx
I am trying to represent this matrix in my code but I am not sure what precisely is meant by FOVx and FOVy. What is the difference and how would I represent this in my perspective matrix? I am not using any 3D api.