Index for Section 3

Alphabetical listing for G

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gluPartialDisk()
NAME
  gluPartialDisk - draw an arc of a disk

SYNOPSIS
  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
  +yFoNt axis, 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 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 +zside 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 -zaxis.

  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(3), gluDisk(3), gluNewQuadric(3), gluQuadricOrientation(3),
  gluQuadricTexture(3), gluSphere(3)

Index for Section 3

Alphabetical listing for G

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