#include <GL/glut.h>
#include <stdio.h>
float angle=0;
void keyboard(unsigned char key , int x , int y)
{
     printf("%c %d %d\n",key,x,y);
     if(key=='a') angle+=3;
     if(key=='b') angle-=3;
     glutPostRedisplay();
  
     //glutSwapBuffers();
}
void display()
{
     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
     glPushMatrix();
        glRotatef(angle,0,1,0);
        glutSolidTeapot(0.3);
     glPopMatrix();
     glutSwapBuffers();
}
int main()
{
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
    glutCreateWindow("week10");
  
    glutDisplayFunc(display);
    glutKeyboardFunc(keyboard);
  
    glutMainLoop();
}

打光

#include <GL/glut.h>

#include <stdio.h>

float angle=0;

void keyboard(unsigned char key , int x , int y)

{

     printf("%c %d %d\n",key,x,y);

     if(key=='a') angle+=3;

     if(key=='b') angle-=3;

     glutPostRedisplay();

    

     //glutSwapBuffers();

}

void myLight()

{

 const GLfloat light_position[] = {2.0f, 5.0f,0.0f,0.0f};

 glEnable(GL_LIGHT0);

    glEnable(GL_NORMALIZE);

    glEnable(GL_COLOR_MATERIAL);

    glEnable(GL_LIGHTING);

    glLightfv(GL_LIGHT0,GL_POSITION,light_position);

}

void display()

{

     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );

     glPushMatrix();

        glRotatef(angle,0,1,0);

        glutSolidTeapot(0.3);

     glPopMatrix();

     glutSwapBuffers();

}

int main()

{

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week10");

   

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

   myLight();

    glutMainLoop();

}

用滑鼠轉動(x軸)
#include <GL/glut.h>
#include <stdio.h>
float angleX=0, startX=0;
void mouse(int button,int state , int x , int y)
{
     printf("%c %d %d\n",button,state,x,y);
     startX=x;
    glutPostRedisplay();
    //glutSwapBuffers();
}
void motion(int x,int y)
{
     printf("%d %d\n,x,y");
     angleX=x - startX;
     glutPostRedisplay();
     }
void myLight()
{
 const GLfloat light_position[] = {2.0f, 5.0f,0.0f,0.0f};
 glEnable(GL_LIGHT0);
    glEnable(GL_NORMALIZE);
    glEnable(GL_COLOR_MATERIAL);
    glEnable(GL_LIGHTING);
    glLightfv(GL_LIGHT0,GL_POSITION,light_position);
}
void display()
{
     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
     glPushMatrix();
        glRotatef(angleX,0,1,0);
        glutSolidTeapot(0.3);
     glPopMatrix();
     glutSwapBuffers();
}
int main()
{
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
    glutCreateWindow("week10");
 
    glutDisplayFunc(display);
    glutMouseFunc(mouse);
    glutMotionFunc(motion);
    myLight();
    glutMainLoop();
}