第十二周上課內容

1.

#include<GL/glut.h>
float dx=0.2,dy=1.3;
float x=0,y=-10;
void display()
{
     x+=dx;
     y+=dy;
     dy-=0.098;
     glPushMatrix();
        glScalef(0.1,0.1,0.1);
        glTranslatef(x,y,0);
        glutSolidTeapot(0.1);
     glPopMatrix();
     glutSwapBuffers();
 }
 int main()
 {
 glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
 glutCreateWindow("a");
 glutDisplayFunc(display);
 glutIdleFunc(display);
 glutMainLoop();
 return 0;

 }

#include<stdio.h>

#include<GL/glut.h>

float dx=0.2,dy=1.3;

float x=0,y=-10;

void display()

{

     x+=dx;

     y+=dy;

     dy-=0.098;

     glPushMatrix();

        glScalef(0.1,0.1,0.1);

        glTranslatef(x,y,0);

        glutSolidTeapot(0.1);

     glPopMatrix();

     glutSwapBuffers();

 }

 void keyboard(unsigned char key,int keyx,int keyy)

 {

  x=0;

  y=-10;

  dx=0.2;

  dy=1.3;

  printf("%f %f %f %f\n",x,y,dx,dy);

  glutPostRedisplay();

  }

 int main()

 {

 glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

 glutCreateWindow("a");

 glutDisplayFunc(display);

 glutIdleFunc(display);

 glutKeyboardFunc(keyboard);

 glutMainLoop();

 return 0;

 }