3D MATH 101

I’ll try my best to make this topic interesting. I’ll know I’ve succeeded if I get through writing it without losing consciousness. This stuff can make your eyes glaze over. Remember one thing: You must understand the math, or you’ll be hopelessly confused if you attempt any 3D programming. Sure, you’ll be able to compile a DirectX sample program, tweak some parameters, and make some pretty pictures. Once you leave “Sampleland” and start making changes to your 3D code, however, you won’t have a clue why your screen is black and none of the pretty pictures show up. You’ll attempt to fix the problem with random tweaks of various numbers in your code, mostly by adding and removing minus signs, and you’ll end up with the same black screen and ....