Hi! I've been working on trying to get something 3D for a while now, and in my first attempt, I wrote my own matrix functions, and I didn't even realize that userdata had built in support for matrix operations!! Well fortunately picotron crashed and I had to rewrite the whole thing!! :sob:
So anyway the cartridge above is my attempt at 3D rendering. This is my second ever attempt so there are probably some inefficiencies in there; so let me know if you have ways to make it run faster!! I've got 3 models included in comments in the code (no fancy gui yet, sorry, just paste the link from the comment to the "parse_obj()" function) so you can see how it performs with different size models.
The main reason I'm posting this is because I spent a really long time figuring out how userdata stuff works and using matrix operations with them, so hopefully this could be a good reference for anyone who is planning to use them?
Welp, thanks for checking this out! Later!
Yo! just wanted to bump this post, I've been pretty stumped as far as why the z axis rotation isn't working... if anyone could give me some tips on how to fix it, that would be super helpful!! again, push z and x buttons to see what it's doing wrong. If you want to see a better representation, you could go into the main.lua code and switch the model to the cube.
It seems like the x and y rotations are working fine, but then when I look at them from the x or y axis instead of the z axis, it's also quite messed up. Is it possibly my rotation matrix?? do I need a proper projection in order for it to actually work? am i mistreating the z-axis as a whole?
I dunno, I've been stumped basically. any help is welcome :>
I'm planning on building on this quite a bit, yea! I wanna get it as far as I can as a functional (albeit jenky) 3d rendering framework. There's some significant issues I'm facing rn (namely the z-axis it seems) which I wanna fix before adding new features. Sadly I haven't had a lotta time to troubleshoot and debug it lately what with uni and all that. Thanks for checkin it out tho :)
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