AL_VERTICAL_SHEAR_TRANSFORM(3)

✨ al_vertical_shear_transform(3) ✨

okay so bestie, welcome to the Allegro 5 API reference manual, specifically the page for al_vertical_shear_transform — a function with a name so long it got its own vibe check. it's a Library Functions Manual situation, and we're about to make a transform go all slanted and cute 💅

---

🎀 SYNOPSIS 🎀

like, here's the whole thing, no cap:

#include <allegro5/allegro.h>

void al_vertical_shear_transform(ALLEGRO_TRANSFORM* trans, float theta)

that's it. that's the whole call. void return, so nothing comes back to you — it just does the thing and dips 🦋

---

🌸 DESCRIPTION 🌸

so what does it actually do?? it applies a vertical shear to the transform. that's the whole sentence, and honestly? iconic brevity.

like, imagine your transform is a nice rectangle and you just tilt it vertically — that's the shear energy. main character transformation arc, literally 🔥

here are the Parameters you gotta feed it:

• trans — the transformation you want to alter. this is the victim, the one getting sheared. it's a pointer to ALLEGRO_TRANSFORM, so it gets changed in place — yes bestie, it mutates, that's the whole point 🫶
• theta — the rotation angle, and it is measured in radians (not degrees!! radians!! don't come at me with degrees or the math will be off 😭). this decides how much shear you're getting.

---

🦋 SINCE 🦋

5.1.7 — so this one's been around a hot minute, vintage but still slaying ✨

---

💖 SEE ALSO 💖

• al_horizontal_shear_transform(3) — the horizontal twin, for when you wanna shear the other way. matching set, honestly adorable, get both 👑

---

and that's the page!! short, sweet, and to the point — very demure, very mindful 🧚💜

fr fr though: remember it's radians for theta, and trans gets altered in place. no return value, no copy, no drama. periodt.

---

this has been the Allegro reference manual — the source/version line and date got folded into this cute lil sign-off instead of a boring footer, you're welcome bestie 💅🎀