GLdouble inner,
                                       GLdouble outer,
                                       GLint slices,
                                       GLint loops,
                                       GLdouble start,
                                       GLdouble sweep )

PARAMETERS
       quad    Specifies a quadrics object (created with gluNewQuadric).

       inner   Specifies the inner radius of the partial disk (can be 0).

       outer   Specifies the outer radius of the partial disk.

       slices  Specifies the number of subdivisions around the z axis.

       loops   Specifies  the  number of concentric rings about the origin into
               which the partial disk is subdivided.

       start   Specifies the starting angle, in degrees, of the disk portion.

       sweep   Specifies the sweep angle, in degrees, of the disk portion.

DESCRIPTION
       gluPartialDisk renders a partial disk on the z=0 plane. A  partial  disk
       is  similar to a full disk, except that only the subset of the disk from
       start through start + sweep is included (where 0 degrees  is  along  the
       +yaxis, 90 degrees along the +x axis, 180 degrees along the -y axis, and
       270 degrees along the -x axis).

       The partial disk has a radius of outer, and contains a concentric circu‐
       lar  hole  with a radius of inner. If inner is 0, then no hole is gener‐
       ated. The partial 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 partial disk is  consid‐
       ered  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 is turned on (with gluQuadricTexture), texture coordinates
       are generated linearly such that where r=outer, the value at (r,  0,  0)
       is  (1.0, 0.5), at (0, r, 0) it is (0.5, 1.0), at (-r, 0, 0) it is (0.0,
       0.5), and at (0, -r, 0) it is (0.5, 0.0).

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

                                                             GLUPARTIALDISK(3G)