OpenGL C bindings library: libGL.a
void gluDisk(GLquadricObj *qobj, GLdouble InnerRadius, GLdouble OuterRadius, GLint Slices, GLint Loops)
The gluDisk subroutine renders a disk on the z=0 plane. The disk has a radius defined by the OuterRadius parameter and contains a concentric circular hole with a radius defined by the InnerRadius parameter. If the value of InnerRadius is 0, no hole is generated. The disk is subdivided around the z axis into slices and rings (as specified by the Slices and Loops parameters, respectively).
With regard to orientation, the +z side of the disk is considered to be outside. (See the gluQuadricOrientation subroutine for details on specifying quadrics orientation.) If orientation is set to GLU_OUTSIDE, any normals generated point along the +z axis. Otherwise, they point along the -z axis.
If texturing is turned on with the gluQuadricTexture subroutine, texture coordinates are generated linearly such that the value at (r, 0, 0) (where r=OuterRadius) is (1, 0.5).
Under the same definition, the following values also apply:
Coordinates Value
(0, r, 0) (0.5, 1)
(-r, 0, 0) (0, 0.5)
(0, -r, 0) (0.5, 0)
| /usr/include/GL/gl.h | Contains C language constraints, variable type definitions, and ANSI function prototypes for OpenGL. |
The gluCylinder subroutine, gluNewQuadric subroutine, gluPartialDisk subroutine, gluQuadricOrientation subroutine, gluQuadricTexture subroutine, gluSphere subroutine.