Author Topic: Mode 7 (Read 5005 times)

fb39ca4 · « **on:** July 22, 2010, 12:30:06 pm »

Does anyone know the math involved for mode 7 graphics? I googled it, but got a bunch of GBA tutorials (GBAs have it as a graphics mode). The wikipedia page wasn't much help either.

mapar007 · « **Reply #1 on:** July 22, 2010, 02:25:24 pm »

Are you going to write a mode 7 engine for the NSpire/68k calcs? Sounds good, but I doubt it's gonna be easy. Anyway, here's some information I found while searching around. (I don't know the subject that well)

- http://en.wikipedia.org/wiki/Affine_transformation
- http://en.wikipedia.org/wiki/Linear_map

So far it looks like lots of linear algebra and matrix theory (this pretty much always crosses your path in 3D graphing engines).

bwang · « **Reply #2 on:** July 22, 2010, 04:25:47 pm »

Darn, you beat me to this project. I was going to start one today

I've been trying to understand the math myself. From what I see, it indeed greatly resembles the math behind 3D.
This tutorial is probably your best bet.
@Mapar007: I don't think you need linear maps to do mode7. That's goes too much into the theory of matrices and such.

DJ Omnimaga · « **Reply #3 on:** July 27, 2010, 08:40:56 pm »

Maybe Calc84maniac could also help, as he wrote one for the z80 calcs. However, his was in z80 ASM, not in C

Author Topic: Mode 7 (Read 5005 times)

fb39ca4

Mode 7

mapar007

Re: Mode 7

bwang

Re: Mode 7

DJ Omnimaga

Re: Mode 7