Gambas Documentation - /comp/gb.opengl.glu/glu/disk

# Glu.Disk (gb.opengl.glu)

Static Sub Disk ( Quad As GluQuadric, Inner As Float, Outer As Float, Slices As Integer, Loops As Integer )

draw a disk.

### Parameters

quad

  Specifies the quadrics object (created with Glu.NewQuadric).

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

Glu.Disk 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 Glu.QuadricOrientation). 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 Glu.QuadricTexture), 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

- Glu.Cylinder,

Glu.NewQuadric, Glu.PartialDisk, Glu.QuadricOrientation, Glu.QuadricTexture, Glu.Sphere

See original documentation on OpenGL website