Tao.OpenGl SDK Documentation

Glu.gluDisk Method 

Draws a disk.

[Visual Basic]
Public Shared Sub gluDisk( _
   ByVal quad As GLUquadric, _
   ByVal innerRadius As Double, _
   ByVal outerRadius As Double, _
   ByVal slices As Integer, _
   ByVal loops As Integer _
)
[C#]
public static void gluDisk(
   GLUquadric quad,
   double innerRadius,
   double outerRadius,
   int slices,
   int loops
);

Parameters

quad
The quadric object (created with gluNewQuadric).
innerRadius
The inner radius of the disk (may be zero).
outerRadius
The outer radius of the disk.
slices
The number of subdivisions around the z-axis.
loops
The number of concentric rings about the origin into which the disk is subdivided.

Remarks

gluDisk renders a disk on the z = 0 plane. The disk has a radius of outerRadius, and contains a concentric circular hole with a radius of innerRadius. If innerRadius 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 = outerRadius, 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

Glu Class | Tao.OpenGl Namespace | gluCylinder | gluNewQuadric | gluPartialDisk | gluQuadricOrientation | gluQuadricTexture | gluSphere