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. Other-
       wise, 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



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