鍵盤控制圖形

#include <GL/glut.h>
float teapotX=0, teapotY=0;
void keyboard(unsigned char key, int x,int y)
{
if(key == 'a') teapotX+=0.1;
if(key == 'b') teapotX-=0.1;
if(key == 'c') teapotY+=0.1;
if(key == 'd') teapotY-=0.1;
glutPostRedisplay();
}
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glTranslatef(teapotX ,teapotY, 0);
glutSolidTeapot(0.4);
glPopMatrix();
glutSwapBuffers();
}
int main()
{
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("week10");

glutDisplayFunc(display);
glutKeyboardFunc(keyboard);

glutMainLoop();
}

滑鼠轉動圖形

#include <GL/glut.h>
#include <stdio.h>
float teapotX=0, teapotY=0;
float angleX=0, startX=0;
void keyboard(unsigned char key, int x,int y)
{
printf("%c %d %d\n",key, x, y);
if(key == 'a') teapotX+=0.1;
if(key == 'b') teapotX-=0.1;
if(key == 'c') teapotY+=0.1;
if(key == 'd') teapotY-=0.1;
glutPostRedisplay();
}
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glTranslatef(teapotX ,teapotY, 0);
glRotatef(angleX,0,1,1);
glutSolidTeapot(0.4);
glPopMatrix();
glutSwapBuffers();
}
void mouse (int button, int state, int x, int y)
{
printf("%d %d %d %d\n",button, state ,x, y);
startX=x;
}
void motion(int x, int y)
{
printf("%d %d\n",x,y);
angleX+= (x-startX);
glutPostRedisplay();
}
int main()
{
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("week10");

glutDisplayFunc(display);
glutKeyboardFunc(keyboard);
glutMouseFunc(mouse);
glutMotionFunc(motion);
glutMainLoop();
}

#include <GL/glut.h>
#include <stdio.h>
float teapotX=0, teapotY=0;
float angleX=0, startX=0;
float angleY=0, startY=0;

void display()
{
glEnable(GL_DEPTH_TEST);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glTranslatef(teapotX ,teapotY, 0);
glRotatef(angleX,0,-1,1);
glRotatef(angleY,-1,0,0);
glutSolidTeapot(0.4);
glPopMatrix();
glutSwapBuffers();
}
void mouse (int button, int state, int x, int y)
{
printf("%d %d %d %d\n",button, state ,x, y);
startX=x;
startY=y;
}
void motion(int x, int y)
{
printf("%d %d\n",x,y);
angleX+= (x-startX);
angleY+= (y-startY);
glutPostRedisplay();
}
void mylight()
{
const GLfloat light_position[] = {2.0f, 5.0f, -5.0f, 0.0f};
glEnable(GL_LIGHT0);
glEnable(GL_NORMALIZE);
glEnable(GL_COLOR_MATERIAL);
glEnable(GL_LIGHTING);
glLightfv(GL_LIGHT0 ,GL_POSITION, light_position);
}
int main()
{
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("week10");
glutDisplayFunc(display);
glutMouseFunc(mouse);
glutMotionFunc(motion);
mylight();
glutMainLoop();
}