code

#include <GL/glut.h>
#include <opencv/highgui.h>
#include <opencv/cv.h>
GLUquadric * quad=NULL;
float angle=0;

void display()
{
 glEnable(GL_DEPTH_TEST);
 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 glPushMatrix();
  glRotatef(90,1,0,0);
 
  glRotatef(angle,0,1,0);
  gluQuadricTexture(quad,true);
  gluSphere(quad, 0.5,30,30);
glPopMatrix();
 glutSwapBuffers();
}
void idle()
{
angle++;
glutPostRedisplay();
}
int main()
{
 glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
 glutCreateWindow("week06");
 glutDisplayFunc(display);
 glutIdleFunc(idle);

 GLuint id;
 IplImage * img = cvLoadImage("earth_map.jpg");
 cvCvtColor(img, img, CV_BGR2RGB);
 glEnable(GL_TEXTURE_2D);
 glGenTextures(1,&id);
 glBindTexture(GL_TEXTURE_2D,id);

 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_LINEAR);
 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_LINEAR);
 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData);

 quad = gluNewQuadric();
 glutMainLoop();

}