get_align_matrix(3)

📦 version 4.4.3.1, in fedora 43, fedora 44

🌸 NAME 🌸

okay so this is the get_align_matrix(3) page from the Allegro manual, bestie. get_align_matrix — rotates a matrix to align it along specified coordinate vectors. It's part of the Allegro game programming library. periodt 💖

✨ SYNOPSIS ✨

Here's the exact incantation, no cap:

#include <allegro.h>

void get_align_matrix(MATRIX *m, fixed xfront, yfront, zfront, fixed
xup, fixed yup, fixed zup);

🦋 DESCRIPTION 🦋

So this function rotates a matrix so that it's aligned along the specified coordinate vectors. Those vectors do not need to be normalized or perpendicular — lowkey flexible, highkey useful. BUT the up and front must not be equal. That's the one rule. Do not let them be equal, fr fr. 😭

And if your front vector is 0,0,-1 and your up vector is 0,1,0, you get the identity matrix back. iconic 👑

The arguments are MATRIX *m, fixed xfront, fixed yfront, fixed zfront, fixed xup, fixed yup, and fixed zup — that's the whole crew. 💅

🔥 SEE ALSO 🔥

Go check those besties out too. 🫶

Allegro version 4.4.3, bestie 💖 no date in this footer, but get_align_matrix(3) is forever ✨

📦 where this page comes from