When I get done with this book, there are a few things I really want to wrap my poor brain around.
Quaternions. Apparently good for rotating things in 3D, avoids gimbal lock, which is something else I only vaguely understand, but think I know it when I see it. 🙂 Anyway, quaternions get into some complex concepts, like hyperspace and imaginary dimensions, the edge of the earth, and sea monsters. So I usually get scared and turn back.
Voronoi diagrams. They look like this:
Basically, each cell consists of all the points on the plane that are closer to the dot in that cell than to any other dot. I’ve actually accomplished this going through each pixel of a bitmap and measuring distances, but that seems pretty brute force. I know there are better ways, but it is more complex than it looks at first glance. Mario has had a go at this, and Robert has done beautiful stuff with them. I just want to understand them so I can do pretty things too.
There are probably more things, but those are on my mind now as things I’ve bumped into and bounced off of more than once.