||02160562||洪伊盈||Week 05|| 滑鼠轉動 3D長方體

#include <GL/glut.h>

float angle=0;

void display()
{
    glClear(GL_COLOR_BUFFER_BIT);
    glPushMatrix();

    glRotatef( angle, 0, 1, 0);

    glBegin(GL_POLYGON);
      glColor3f(1,0,0);
        glVertex3f(0.1,0.1,0.8);
        glVertex3f(-0.1,0.1,0.8);
        glVertex3f(-0.1,-0.1,0.8);
        glVertex3f(0.1,-0.1,0.8);

    glEnd();

    glPopMatrix();
    angle+=0.01;

    glFlush();
}

int main(int argc, char **argv)
{
    glutInit(&argc, argv);

    glutCreateWindow("02160562");

    glutDisplayFunc(display);
    glutIdleFunc(display);

    glutMainLoop();
}

#include <GL/glut.h>

float angle=0;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT);

    glPushMatrix();

    glRotatef( angle, 0, 1, 0);

    glBegin(GL_POLYGON);

      glColor3f(1,0,0);

        glVertex3f(0.1,0.1,0.8);

        glVertex3f(-0.1,0.1,0.8);

        glVertex3f(-0.1,-0.1,0.8);

        glVertex3f(0.1,-0.1,0.8);

    glEnd();

    glBegin(GL_POLYGON);

      glColor3f(1,0,0);

        glVertex3f(0.1,0.1,-0.8);

        glVertex3f(-0.1,0.1,-0.8);

        glVertex3f(-0.1,-0.1,-0.8);

        glVertex3f(0.1,-0.1,-0.8);

    glEnd();

    glBegin(GL_QUAD_STRIP);

        glVertex3f(0.1,0.1,0.8);

        glVertex3f(0.1,0.1,-0.8);

        glVertex3f(-0.1,0.1,0.8);

        glVertex3f(-0.1,0.1,-0.8);

        glVertex3f(-0.1,-0.1,0.8);

        glVertex3f(-0.1,-0.1,-0.8);

        glVertex3f(-0.1,-0.1,0.8);

        glVertex3f(0.1,-0.1,-0.8);

    glEnd();

    glPopMatrix();

    angle+=0.01;

    glFlush();

}

int main(int argc, char **argv)

{

    glutInit(&argc, argv);

    glutCreateWindow("02160562");

    glutDisplayFunc(display);

    glutIdleFunc(display);

    glutMainLoop();

}

更改選轉軸 glRotatef( angle, 0, 1, 0.5);

#include <GL/glut.h>

float angle=0;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT);

    glPushMatrix();

    glRotatef( angle, 0, 1, 0.5);

    glBegin(GL_POLYGON);

      glColor3f(1,0,0);

        glVertex3f(0.1,0.1,0.8);

        glVertex3f(-0.1,0.1,0.8);

        glVertex3f(-0.1,-0.1,0.8);

        glVertex3f(0.1,-0.1,0.8);

    glEnd();

    glBegin(GL_POLYGON);

      glColor3f(1,1,0);

        glVertex3f(0.1,0.1,-0.8);

        glVertex3f(-0.1,0.1,-0.8);

        glVertex3f(-0.1,-0.1,-0.8);

        glVertex3f(0.1,-0.1,-0.8);

    glEnd();

    glBegin(GL_QUAD_STRIP);

        glVertex3f(0.1,0.1,0.8);

        glVertex3f(0.1,0.1,-0.8);

        glVertex3f(-0.1,0.1,0.8);

        glVertex3f(-0.1,0.1,-0.8);

        glVertex3f(-0.1,-0.1,0.8);

        glVertex3f(-0.1,-0.1,-0.8);

        glVertex3f(-0.1,-0.1,0.8);

        glVertex3f(0.1,-0.1,-0.8);

    glEnd();

    glPopMatrix();

    angle+=0.01;

    glFlush();

}

//增加滑鼠移動

int oldX=0; 

void motion(int x,int y)

{

    angle +=(x-oldX);

    oldX=x;

}

int main(int argc, char **argv)

{

    glutInit(&argc, argv);

    glutCreateWindow("02160562");

    glutDisplayFunc(display);

    glutIdleFunc(display);

    glutMotionFunc(motion);

    glutMainLoop();

}