GLdoubleinner,GLdoubleouter,GLintslices,GLintloops)

**eqn not supported**

*quad*- Specifies the quadrics object (created
with
**gluNewQuadric**). *inner*- Specifies the inner radius of the disk (may be 0).
*outer*- Specifies the outer radius of the disk.
*slices*- Specifies the number
of subdivisions around the
*z*axis. *loops*- Specifies the number of concentric rings about the origin into which the disk is subdivided.

With respect to orientation, the +*z*
side of the disk is considered to be "outside" (see **gluQuadricOrientation**).
This means that if the orientation 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).