第八次上課

#include <GL/glu.h>
#include <GL/glut.h>
#include <opencv/highgui.h>
#include <opencv/cv.h>
GLUquadric * quad=NULL;
GLuint id;
float rot=0;
void display()
{
    glEnable(GL_DEPTH_TEST);
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glEnable(GL_TEXTURE_2D);
 glBindTexture(GL_TEXTURE_2D,id);
    glPushMatrix();
        glRotated(90,1,0,0);
        glRotated(rot,0,0,1);
        gluQuadricTexture (quad, true);
        gluSphere(quad, 1, 30,30);    
    glPopMatrix();
 glDisable(GL_TEXTURE_2D);
    glutSwapBuffers();
}
void idle()
{
    rot+=0.3;
    glutPostRedisplay();
}
int main()
{
    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);
    glutCreateWindow("99160921");
    glutDisplayFunc(display);
    glutIdleFunc(idle);
//Texture image file by OpenCV
 IplImage * img = cvLoadImage("earth.jpg");
 cvCvtColor(img,img,CV_BGR2RGB);
//Texture image file by OpenGL
 glEnable(GL_TEXTURE_2D);
 glGenTextures(1,&id);
 glBindTexture(GL_TEXTURE_2D,id);
 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_LINEAR);
 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_LINEAR);
 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 glTexImage2D(GL_TEXTURE_2D,0,GL_RGB,img->width,img->height,0,GL_RGB,GL_UNSIGNED_BYTE,img->imageData);
//Texture End
    quad = gluNewQuadric();
    glutMainLoop();
    return 0;
}