gluDisk(3G)		       OpenGL Reference			   gluDisk(3G)

NAME    [Toc]    [Back]

     gluDisk - draw a disk

C SPECIFICATION    [Toc]    [Back]

     void gluDisk( GLUquadric* quad,
		   GLdouble inner,
		   GLdouble outer,
		   GLint slices,
		   GLint loops )

PARAMETERS    [Toc]    [Back]

     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    [Toc]    [Back]

     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. 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    [Toc]    [Back]

     gluCylinder, gluNewQuadric, gluPartialDisk, gluQuadricOrientation,
     gluQuadricTexture,	gluSphere


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