MCCCU

課程內容:

1.畫一個實心的圓球

///備份完清空

#include <GL/glut.h>

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glutSolidSphere(0.3,30,30);///實心的圓球

                      ///半徑,縱切,橫切

    glutSwapBuffers();

}

int main(int argc, char** argv)

{

    glutInit( &argc, argv );

    glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH );

    glutCreateWindow(" Week14 timer ");

    glutDisplayFunc(display);

    glutMainLoop();

}

2.啟動glutTimerFunc()會在4秒後

///備份完清空

#include <GL/glut.h>

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glutSolidSphere(0.3,30,30);///實心的圓球

                ///半徑,縱切,橫切

    glutSwapBuffers();

}

void timer(int t)

{

    glClearColor(1,0,0,0);///清除背景的色彩:紅色

    display();

}

int main(int argc, char** argv)

{

    glutInit( &argc, argv );

    glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH );

    glutCreateWindow(" Week14 timer ");

    glutDisplayFunc(display);

    glutTimerFunc(4000, timer, 0);

                    ///要等多久,叫誰,參數

    glutMainLoop();

}

3.講解縱切橫切 (glutWireSphere)

4.定時旋轉方塊

#include <GL/glut.h>

int angle=0;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glRotatef(angle,0,0,1);

        glutSolidCube(0.3);

    glPopMatrix();

    glutSwapBuffers();

}

void timer(int t)

{

    glutTimerFunc(30 , timer, t+1);

    angle++;

    display();

}

int main(int argc, char** argv)

{

    glutInit( &argc, argv );

    glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH );

    glutCreateWindow(" Week14 timer ");

    glutDisplayFunc(display);

    glutTimerFunc(4000, timer, 0);

    glutMainLoop();

}

5.讓方塊可以順時針和逆時針旋轉(利用angle+=diff)

#include <GL/glut.h>

int angle=0;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glRotatef(angle,0,0,1);

        glutSolidCube(0.3);

    glPopMatrix();

    glutSwapBuffers();

}

int diff=2;

void timer(int t)

{

    glutTimerFunc(20 , timer, t+1);

    angle+=diff;

    if(angle>180) diff=-diff;

    if(angle<0) diff=-diff;

    display();

}

int main(int argc, char** argv)

{

    glutInit( &argc, argv );

    glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH );

    glutCreateWindow(" Week14 timer ");

    glutDisplayFunc(display);

    glutTimerFunc(4000, timer, 0);

    glutMainLoop();

}

6.比較快的重複旋轉方塊

7.旋轉關節手臂

#include <GL/glut.h>

int angle=0;

void drawArml()

{

    glPushMatrix();

    glScalef(1,0.5,0.5);

    glColor3f(1,0,0); glutSolidCube(0.3);

    glPopMatrix();

}

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glColor3f(1,1,1); glutSolidCube(0.4);///身體白

        glPushMatrix();

        glTranslatef(-0.2,+0.2,0);///掛到右上角

        glRotatef(angle,0,0,1);///轉動

        glTranslatef(-0.15,0,0);///旋轉中心的關節軸,放到正中心

        drawArml();

        glPopMatrix();

        glPopMatrix();

    glutSwapBuffers();

}

int diff=2;

void timer(int t)

{

    glutTimerFunc(20 , timer, t+1);

    angle+=diff;

    if(angle>90 || angle<0) diff=-diff;

    display();

}

int main(int argc, char** argv)

{

    glutInit( &argc, argv );

    glutInitDisplayMode( GLUT_DOUBLE | GLUT_DEPTH );

    glutCreateWindow(" Week14 timer ");

    glutDisplayFunc(display);

    glutTimerFunc(0, timer, 0);

    glutMainLoop();

}