02160934蔡閎鈞_week14_課堂練習

1.劃出一個茶壺並且打光

2.在劃出一個茶壺並且將握柄綁訂在壺嘴可以動

3.弄出一隻可以動的手臂

4.兩隻可以動的手筆

#include <GL/glut.h>
float angle=0,oldX=0,oldY=0;
void drawBody()
{
    glPushMatrix();
    glScalef(1,0.5,0.5);
    glutSolidCube(1);
    glPopMatrix();
}
void drawArm()
{
    glPushMatrix();
    glScalef(0.6,0.3,0.3);
    glutSolidCube(1);
    glPopMatrix();
}

void display()
{
    GLfloat pos[]={0,0,-1,0};
    glLightfv(GL_LIGHT0,GL_POSITION,pos);
    glEnable(GL_LIGHT0);
    glEnable(GL_LIGHTING);

    glEnable(GL_DEPTH_TEST);
    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glPushMatrix();
        glTranslatef(0.5,0.0,0);
        glRotatef(angle,0,0,1);
        glTranslatef(0.3,0,0);
        drawArm();
        glPushMatrix();
        glTranslatef(0.25,0.0,0);
        glRotatef(angle,0,0,1);
        glTranslatef(0.25,0,0);
        drawArm();
        glPopMatrix();
    glPopMatrix();
    glPushMatrix();
        glTranslatef(-0.5,0.0,0);
        glRotatef(-angle,0,0,1);
        glTranslatef(-0.25,0,0);
        drawArm();
        glPushMatrix();
        glTranslatef(-0.25,0.0,0);
        glRotatef(-angle,0,0,1);
        glTranslatef(-0.25,0,0);
        drawArm();
        glPopMatrix();
    glPopMatrix();
    drawBody();

    glFlush();
}
void timer(int t)
{
    glutTimerFunc(20,timer,t+1);
    //angle++;
    glutPostRedisplay();
}

void motion(int x,int y)
{
    angle-=y-oldY;
    oldY=y;oldX=x;
}
void mouse(int button, int state, int x,int y)
{
    if(state==GLUT_DOWN)
    {
        oldX=x;oldY=y;
    }
}

int main(int argc,char**argv)
{
    glutInit(&argc,argv);
    glutCreateWindow("GLUT");
    glutDisplayFunc(display);
    glutTimerFunc(20,timer,0);
    glutMouseFunc(mouse);
    glutMotionFunc(motion);
    glutMainLoop();
}