GLUTWIREOCTAHEDRON(3)

✨ GLUTWIREOCTAHEDRON(3) ✨

okay bestie, pull up a chair, this is page GLUTWIREOCTAHEDRON from section 3 of the manual (yeah the man page itself is literally untitled, we don't talk about it 💀) and it's lowkey one of the cutest little geometry calls in all of OpenGLUT.

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🌸 NAME 🌸

glutWireOctahedron — draws a wireframe octahedron, no cap 💅

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📚 LIBRARY 📚

OpenGLUT — geometry 🎀

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🦋 SYNOPSIS 🦋

#include <openglut.h>

void
glutWireOctahedron(void);

not a single argument. not one. she takes zero parameters and she serves. periodt. 👑

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💖 DESCRIPTION 💖

So this function draws a regular wireframe 8-sided polyhedron, centered right at the origin. Main character energy, centered, unbothered. 🌈

And the vertices? Iconic placement, let me tell you exactly where they live:

• (+/-1, 0, 0)
• (0, +/-1, 0)
• (0, 0, +/-1)

That's it, that's the whole geometry, and she ate. ✨

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😭 CAVEATS 😭

okay so here's the tea, and some of it is a little cursed:

• We visit the same vertices the same number of times as we do for the solid octahedron, but the order is different. same vibes, different choreography. 🕺
• It draws every edge twice. yes, twice. not a typo, not me being dramatic (for once). 🙈
• The lines have normals, but those normals are from the facets, rather than upon the edge. So if you squint too hard, the lighting on a wireframe octahedron does not look quite right. 💀

fr fr, do not squint. the lighting will betray you.

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🧚 TODO 🧚

The man page itself is manifesting this one: it may be faster (and look better) to draw each edge once, setting the Normal at each edge. 🫶

And then there's the aside — the author says they don't think this matters all that much, but a lineloop was proposed for the wire Cube for speed. so like, notes were taken, ideas were had, no promises were made. 💜

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🔥 SEE ALSO 🔥

• glutSolidOctahedron(3)

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that's the whole page, bestie, you're officially fluent in wireframe octahedron 💅

this lil masterpiece comes from OpenGLUT, it's dated UNDATED, and the manual it lives in is called UNTITLED() — which honestly? mysterious. enigmatic. very her. 🎀