Week05 徐詩涵課堂

劃出一個小方塊,讓他移動

#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("02160811flight");
    glutDisplayFunc(display);
    glutIdleFunc(display);
    glutMainLoop();
}

轉動

#include <GL/glut.h>

float angle=0;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT);

    glPushMatrix();  //備分Matrix

      glRotatef(angle,0,1,0.5);

      glBegin(GL_POLYGON);;  //開始畫POLYGON

        glColor3f(1,0,0);  //顏色

        glVertex3f(0.1,0.1,0.8); //頂點

        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();  //還原Matrix

    angle+=0.01;

    glFlush();

}

int main(int argc,char **argv)

{

    glutInit(&argc, argv);

    glutCreateWindow("02160811flight");

    glutDisplayFunc(display);

    glutIdleFunc(display);

    glutMainLoop();

}

讓圖片跟著滑鼠轉動

#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(1,0,0);

        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 oldX=0;

void motion(int x, int y)

{

    angle +=(x-oldX);

    oldX=x;

}

int main(int argc,char **argv)

{

    glutInit(&argc, argv);

    glutCreateWindow("02160811flight");

    glutDisplayFunc(display);

    glutIdleFunc(display);

    glutMotionFunc(motion);//mouse motion drag動作移動的函式

    glutMainLoop();

}