vpMultMatrix(3)

📦 version 1.0b3, in debian bookworm, debian trixie, ubuntu jammy, ubuntu noble, ubuntu questing, ubuntu resolute, ubuntu stonking

💖 vpMultMatrix — ok bestie, we're multiplying matrices 💖

it's giving vpMultMatrix(3), from the Library Functions Manual, and honestly? it's a whole mood. let's go 🫶

✨ NAME ✨

vpMultMatrix — multiply the current transformation matrix by another matrix. that's it. that's the girl. 🔥

🌸 SYNOPSIS 🌸

#include <volpack.h>

vpResult
vpMultMatrix(vpc, m)
    vpContext *vpc;
    vpMatrix4 m;

🎀 ARGUMENTS 🎀

  • vpc — the VolPack context you got from vpCreateContext. your main character. 👑
  • m — the input matrix. the new bestie you're introducing to the group chat. 🦋

💅 DESCRIPTION 💅

so vpMultMatrix multiplies the current transformation matrix by an arbitrary 4-by-4 transformation matrix. lowkey powerful, highkey essential.

wanna set the current transformation matrix instead of multiplying it? that's vpCurrentMatrix's job, not hers. don't mix them up bestie 😭

by default, the matrix gets post-multiplied, which looks like:

N = N*m

where N is the current matrix and m is the argument to vpMultMatrix. yes, the math is real, no cap.

and if post-multiplication isn't your vibe? the VP_CONCAT_MODE option to vpSeti lets you pick pre-multiplication instead. options, we love to see it ✨

🌈 STATE VARIABLES 🌈

you can pull the current matrix concatenation parameters with these state variable codes (peep vpGeti(3) for the deets):

  • VP_CURRENT_MATRIX
  • VP_CONCAT_MODE

💀 ERRORS 💀

the return value is always VP_OK. always. every single time. she does not miss. periodt. 💅

🧚 SEE ALSO 🧚

ok that's the whole page, go forth and concatenate responsibly 🌸

this has been your girl vpMultMatrix(3) from VolPack — stay iconic, bestie 💜
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