Week05_連訢妤課堂示範

第一節

#include <GL/glut.h>

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

    glFlush();
}

int main(int argc,char **argv)
{
    glutInit(&argc,argv);
    glutCreateWindow("02160013-HW1");
    glutDisplayFunc(display);
    glutMainLoop();
}

#include <GL/glut.h>

float angle=0; ---宣告變數

void display()

{

    glClear(GL_COLOR_BUFFER_BIT);

    glPushMatrix(); ---旋轉矩陣

    glRotatef(angle,0,1,0); ---對哪一軸旋轉

    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();---旋轉矩陣

    angle+=0.01; ---旋轉幾度

    glFlush();

}

int main(int argc,char **argv)

{

    glutInit(&argc,argv);

    glutCreateWindow("02160013-HW1");

    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);---另外一邊的正方形

        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("02160013-HW1");

    glutDisplayFunc(display);

    glutIdleFunc(display);

    glutMainLoop();

}

第二節

#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);---把四角連在一起

        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("02160013-HW1");

    glutDisplayFunc(display);

    glutIdleFunc(display);

    glutMainLoop();

}

第三節

#include <GL/glut.h>

float angle=0;

int oldx=0;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT);

    glPushMatrix();

    glRotatef(angle,0,1,0.5);

    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_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);

        glColor3f(0,0,1);

        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();

}

void motion(int x,int y)---移動函式

{

    angle+=(x-oldx);

    oldx=x;

}

int main(int argc,char **argv)

{

    glutInit(&argc,argv);

    glutCreateWindow("02160013-HW1");

    glutDisplayFunc(display);

    glutIdleFunc(display);

    glutMotionFunc(motion);---利用滑鼠做移動

    glutMainLoop();

}