2015/5/27week14 課堂作業 黃志楷

目標:茶壺旋轉並移動旋轉軸

#include<GL/glut.h>
float angle=0;
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(0.6,0.2,0);///移動位置
    glRotatef(angle,0,0,1);///旋轉
    glTranslatef(0.3,0,0);///移動旋轉軸
    glutSolidTeapot(0.3);///畫出茶壺
    glPopMatrix();
    glFlush();
}
void timer(int t)
{
    glutTimerFunc(20,timer,t+1);
    angle++;
    glutPostRedisplay();
}
int main(int argc,char *argv[])
{
    glutInit(&argc,argv);
    glutCreateWindow("02160421");
    glutDisplayFunc(display);
    glutTimerFunc(20,timer,0);
    glutMainLoop();
}

目標:放置在正確位置並旋轉

#include<GL/glut.h>

float angle=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);///移動位置

    glRotatef(angle,0,0,1);///旋轉

    glTranslatef(0.3,0,0);///移動旋轉軸

    drawarm();

    glPopMatrix();

    drawbody();

    glFlush();

}

void timer(int t)

{

    glutTimerFunc(20,timer,t+1);

    angle++;

    glutPostRedisplay();

}

int main(int argc,char *argv[])

{

    glutInit(&argc,argv);

    glutCreateWindow("02160421");

    glutDisplayFunc(display);

    glutTimerFunc(20,timer,0);

    glutMainLoop();

}

目標:滑鼠控制手臂

#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);///移動位置

        glRotatef(angle,0,0,1);///旋轉

        glTranslatef(0.25,0,0);///移動旋轉軸

        drawarm();

    glPushMatrix();

        glTranslatef(0.25,0,0);///移動位置

        glRotatef(angle,0,0,1);///旋轉

        glTranslatef(0.25,0,0);///移動旋轉軸

        drawarm();

    glPopMatrix();

    glPopMatrix();

    glPushMatrix();

        glTranslatef(-0.5,0,0);///移動位置

        glRotatef(-angle,0,0,1);///旋轉

        glTranslatef(-0.25,0,0);///移動旋轉軸

        drawarm();

    glPushMatrix();

    glTranslatef(-0.25,0,0);///移動位置

    glRotatef(-angle,0,0,1);///旋轉

    glTranslatef(-0.25,0,0);///移動旋轉軸

    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("02160421");

    glutDisplayFunc(display);

    glutTimerFunc(20,timer,0);

    glutMotionFunc(motion);

    glutMouseFunc(mouse);

    glutMainLoop();

}