gluPartialDisk - draw an arc of a disk



C SPECIFICATION

       void gluPartialDisk( GLUquadric* quad,
                            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 circular hole with a radius of inner. If  inner
       is  0, then no hole is generated. The partial disk is sub-
       divided 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     considered     to    be    outside    (see
       gluQuadricOrientation).  This means that if  the  orienta-



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