vpTracePixel(3)

💖 vpTracePixel(3) — the manual page, but make it cute 💖

so this is a page from the Library Functions Manual, bestie — it's all about vpTracePixel, one little function in the VolPack crew. 🫶

✨ NAME ✨

vpTracePixel — print a trace of the voxels composited into a pixel 🔍👀

🌸 SYNOPSIS 🌸

#include <volpack.h>

vpResult
vpTracePixel(vpc, trace_u, trace_v)
    vpContext *vpc;
    int trace_u, trace_v;

🎀 ARGUMENTS 🎀

• vpc — the VolPack context, aka the one you got from vpCreateContext. your main character. 👑
• trace_u, trace_v — the intermediate image coordinates of the pixel you wanna trace. yes, intermediate, not final — more on that in a sec. 🦋

💅 DESCRIPTION 💅

okay so real talk: this routine is strictly for debugging the rendering algorithms. it's not here to be pretty, it's here to spill the tea. 🍵

if (trace_u, trace_v) is a valid set of coordinates in the intermediate image, then a printout appears during rendering showing a trace of all of the voxels that contribute to that pixel. literally every single one that feeds into it. 💀

and here's the part people trip over: the intermediate image is NOT the same as the final image. they're two different girls. don't confuse them. see vpGetvpSetImage(3) for the whole situation. 😭

heads up bestie: the VolPack library must be compiled with the -DDEBUG compiler option for this function to have any effect at all. no -DDEBUG, no trace. that's it. that's the whole vibe check. 🙈

🌈 SEE ALSO 🌈

VolPack(3) — go read the big one, it's iconic. ⭐

and that's a wrap, angel 💜 this whole thing lives in VolPack and it's vpTracePixel(3) in the Library Functions Manual — mwah, bye, slay, go trace some voxels 💅✨