Three Dollar Quill

I took a little time to enter the matrix that describes projecting a conic into a form that SymPy can work with, and it feels like it's taking much longer than that to calculate the determinant. I think it's using an entire core pretty much constantly to chew through this. I'm not sure whether it's going to finish tonight.

...

Okay, there it goes. And now I've got it simplified. And I don't really understand most of what I'm looking at. I can see that the conic becomes degenerate if the ellipse if viewed edge-on, so that's going to need special casing. But the meaning of the remaining terms is not obvious to me. I've got a vague handle on the A, C, and F terms, but the B, D, and E terms are harder to eyeball right now. Maybe in a day or two, I'll have the time and focus to understand what's going on there.

Good night.