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GLUPARTIALDISK(3gl)					   GLUPARTIALDISK(3gl)

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 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 along the -y axis, and 270
       along the -x axis).

       The partial disk has a radius of outer, and contains a concentric  cir‐
       cular  hole with a radius of inner. If inner is 0, then no hole is gen‐
       erated. 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

				   15 Mar 97		   GLUPARTIALDISK(3gl)
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