gluDisk

GLUDISK(3G)							  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 ori-
       entation 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(3G),	       gluNewQuadric(3G),	  gluPartialDisk(3G),
       gluQuadricOrientation(3G), gluQuadricTexture(3G), gluSphere(3G)



								  GLUDISK(3G)