Week13_02160261_鄧安倫

攝影機.運鏡

打光過後的茶壺,而且會自動轉向

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#include <GL/glut.h>

float eyeX=-100, eyeY=80 ,eyeZ=-200;

void display()

{

    GLfloat pos[] ={0,0,200,0};

    glLightfv(GL_LIGHT0, GL_POSITION,pos);

    glEnable(GL_LIGHT0);

    glEnable(GL_NORMALIZE);

    glEnable(GL_LIGHTING);

    glEnable(GL_DEPTH_TEST);

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        gluLookAt(eyeX,eyeY,eyeZ, 0,0,0, 0,1,0);

        glPushMatrix();

            glutSolidTeapot(100);

        glPopMatrix();

    glPopMatrix();

    glFlush();

}

void motion(int x,int y)

{

    eyeX=x-400; eyeY=300-y;

    glutPostRedisplay();

}

void reshape(int w,int h)

{

    glViewport(0,0, w, h);

    glMatrixMode(GL_PROJECTION);

    glLoadIdentity();

    gluPerspective(90, w/h ,0.001, 10000);

    glMatrixMode(GL_MODELVIEW);

    glLoadIdentity();

}

void timer(int t)

{

    glutTimerFunc( 20, timer, t+1);

    eyeX+=2;

    if(eyeX>300) eyeY+=4;

    glutPostRedisplay();

}

int main(int argc,char **argv)

{

    glutInit(&argc,argv);

    glutInitWindowSize(800,600);

    glutCreateWindow("3D");

    glutDisplayFunc(display);

    glutReshapeFunc(reshape);

    glutMotionFunc(motion);

    glutTimerFunc(0,timer,0);

    glutMainLoop();

}