gluDisk()gluDisk()NAMEgluDisk - draw a disk
GLint loops );
Specifies the quadrics object (created with gluNewQuadric()). Speci‐
fies the inner radius of the disk (may be 0). Specifies the outer
radius of the disk. Specifies the number of subdivisions around the z
axis. Specifies the number of concentric rings about the origin into
which the disk is subdivided.
DESCRIPTIONgluDisk() renders a disk on the z = 0 plane. The disk has a radius of
outer, and contains a concentric circular hole with a radius of inner.
If inner is 0, then no hole is generated. The disk is subdivided around
the z axis into slices (like pizza slices), and also about the z axis
into rings (as specified by slices and loops, respectively).
With respect to orientation, the +z side of the disk is considered to
be "outside" (see gluQuadricOrientation()). This means that if the ori‐
entation is set to GLU_OUTSIDE, then any normals generated point along
the +z axis. Otherwise, they point along the -z axis.
If texturing has been turned on (with gluQuadricTexture()), texture
coordinates are generated linearly such that where $ r = outer, the
value at (r, 0, 0) is (1, 0.5), at (0, r, 0) it is (0.5, 1), at (-r, 0,
0) it is (0, 0.5), and at (0, -r, 0) it is (0.5, 0).
SEE ALSOgluCylinder(3), gluNewQuadric(3), gluPartialDisk(3), gluQuadricOrienta‐
tion(3), gluQuadricTexture(3), gluSphere(3)gluDisk()