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Author Topic: Mode 7  (Read 4767 times)

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Offline fb39ca4

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Mode 7
« 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.
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Offline mapar007

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Re: Mode 7
« 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).
« Last Edit: July 22, 2010, 02:26:16 pm by mapar007 »
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Offline bwang

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Re: Mode 7
« Reply #2 on: July 22, 2010, 04:25:47 pm »
Darn, you beat me to this project. I was going to start one today :P
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.
« Last Edit: July 22, 2010, 04:26:21 pm by bwang »
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Online DJ Omnimaga

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Re: Mode 7
« 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
« Last Edit: July 27, 2010, 08:41:18 pm by DJ Omnimaga »
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