gluDisk(3G)

NAME
     gluDisk - draw a disk


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


PARAMETERS
     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.

DESCRIPTION
     gluDisk 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
     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).

SEE ALSO
     gluCylinder, gluNewQuadric, gluPartialDisk, gluQuadricOrientation,
     gluQuadricTexture, gluSphere