Download from gintro examples directory

/* File: oglexSphere.c
   Notes: basically a copy of the CAVE OpenGL example ball.c
*/

#include "stdio.h"
#include 
#include 

void oglexInit(void);
void oglexDraw(void);

main(int argc, char **argv)
{
    /* Initialize the CAVE */
    CAVEConfigure(&argc,argv,NULL);
    CAVEInit();

    /* Give the library a pointer to the GL initialization function */
    CAVEInitApplication(oglexInit, NULL);

    /* Give the library a pointer to the drawing function */
    CAVEDisplay(oglexDraw, NULL);

    /* Wait for the escape key to be hit */
    while (!CAVEgetbutton(CAVE_ESCKEY))
	sginap(10);

    /* Clean up & exit */
    CAVEExit();
}


static GLUquadricObj *sphereObj;

void oglexInit(void)
{
    glEnable(GL_LIGHT0);
    glEnable(GL_LIGHTING);
    sphereObj = gluNewQuadric();
}

void oglexDraw(void)
{
    float cyan[4] = { 0.0, 1.0, 1.0, 1.0 };

    glClearColor(0., 0., 0., 0.);
    glClear(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT);
    glPushMatrix();
	glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, cyan);
	glTranslatef(0.0, 5.0, -4.0);
	gluSphere(sphereObj, 1.0, 15, 15);
    glPopMatrix();
}