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GLUPARTIALDISK(3G)                                                                        GLUPARTIALDISK(3G)



NAME
       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 sub-divided. subdivided.
               divided.

       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 +y axis, 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 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  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 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(3G), gluDisk(3G), gluNewQuadric(3G), gluQuadricOrientation(3G), gluQuadricTexture(3G), gluSphere(3G)





                                                                                          GLUPARTIALDISK(3G)