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OpenGL 1.2 for AIX: Reference Manual

gluSphere Subroutine

Purpose

Draws a sphere.

Library

OpenGL C bindings library: libGL.a

C Syntax

void gluSphere( GLUquadric* quad, 
   GLdouble radius, 
   GLint slices, 
   GLint stacks)

Description

The gluSphere subroutine draws a sphere of the supplied radius around the centerpoint of the origin. The sphere is subdivided around the z axis into slices (longitude) and along the z axis into stacks (latitude).

If the orientation is set to GLU_OUTSIDE (with the gluQuadricOrientation subroutine), any normals generated point away from the center of the sphere. Otherwise, they point toward the center of the sphere.

If texturing is turned on using the gluQuadricTexture subroutine, texture coordinates are generated so that t ranges from 0.0 at z=-radius to 1.0 at z=radius (t increases linearly along longitudinal lines), and s ranges from 0.0 at the +y axis to 0.25 at the +x axis, as well as up to 0.5 at the -y axis and 0.75 at the -x axis, then back to 1.0 at the +y axis.

Parameters

quad Specifies the quadrics object created with the gluNewQuadric subroutine.
radius Specifies the radius of the sphere.
slices Specifies the number of subdivisions around the z axis (similar to lines of longitude).
stacks Specifies the number of subdivisions along the z axis (similar to lines of latitude).

Files

/usr/include/GL/gl.h Contains C language constraints, variable type definitions, and ANSI function prototypes for OpenGL.

Related Information

The gluCylinder subroutine, gluDisk subroutine, gluNewQuadric subroutine, gluPartialDisk subroutine, gluQuadricOrientation subroutine, gluQuadricTexture subroutine.

OpenGL Overview.


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