GLUDISK(3G)

💖 GLUDISK(3G) 💖

okay bestie, welcome to the gluDisk page — it's a 3G manual page, it lives in the GLU family, and it's literally just about drawing a disk. a whole page. for a disk. iconic.

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✨ NAME ✨

gluDisk — draw a disk 💿

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🌸 C SPECIFICATION 🌸

here's the whole thing, copy it exactly, no cap:

void gluDisk( GLUquadric* quad,
              GLdouble inner,
              GLdouble outer,
              GLint slices,
              GLint loops )

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🎀 PARAMETERS 🎀

• quad — the quadrics object, fr. you make it with gluNewQuadric.
• inner — the inner radius of the disk. it can be 0, and yes that's allowed, that's the whole point.
• outer — the outer radius of the disk. the big one. the main character radius.
• slices — how many subdivisions around the z axis.
• loops — how many concentric rings around the origin the disk gets chopped into.

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🦋 DESCRIPTION 🦋

so gluDisk renders a disk, and it does it on the z = 0 plane. the disk's radius is outer, and inside it there's a concentric circular hole with radius inner. if inner is 0? no hole. solid disk. we love a solid disk. 🍩

the disk gets subdivided around the z axis into slices (think pizza slices, genuinely) and also about the z axis into rings — those two things are slices and loops respectively, in that order, don't mix them up bestie.

now the orientation tea ☕: the +z side of the disk is considered "outside" — check gluQuadricOrientation for that whole situation. what this means is: if the orientation is set to GLU_OUTSIDE, then any normals that get generated point along the +z axis. otherwise, they point along the -z axis. periodt.

and if texturing is turned on (via gluQuadricTexture), texture coordinates get generated linearly, like this, where r=outer:

• at (r, 0, 0) → (1, 0.5)
• at (0, r, 0) → (0.5, 1)
• at (-r, 0, 0) → (0, 0.5)
• at (0, -r, 0) → (0.5, 0)

slay. ✨

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👑 SEE ALSO 👑

• gluCylinder(3G)
• gluNewQuadric(3G)
• gluPartialDisk(3G)
• gluQuadricOrientation(3G)
• gluQuadricTexture(3G)
• gluSphere(3G)

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okay that's the whole page, you're officially a disk girlie now 💅🫶 this was GLUDISK(3G), same name at the top and at the bottom because that's how manual pages do, mwah, bye bestie 💜🌸