06160105_HW14

電腦圖學
(1)主題:計時器Timer
(2)主題:內插公式
(3)主題:動畫
(4)期末作品


(1)測試-茶壺

#include <GL/glut.h>
void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glutSolidTeapot( 0.3 );

    glutSwapBuffers();
}
int main(int argc, char**argv)
{
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
    glutInitWindowSize(500,500);///變大了
    glutCreateWindow("week 14 timer");

    glutDisplayFunc(display);
    glutMainLoop();
}

(2)加入音效(wav下載)

#include <GL/glut.h>
#include <mmsystem.h>///Now (1)
void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glutSolidTeapot( 0.3 );

    glutSwapBuffers();
}
int main(int argc, char**argv)
{
    PlaySoundA("bubbs.wav", NULL, SND_ASYNC);///Now (2)
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
    glutInitWindowSize(500,500);///變大了
    glutCreateWindow("week 14 timer");

    glutDisplayFunc(display);

    glutMainLoop();
}

(3)延遲發出音效

#include <GL/glut.h>
#include <mmsystem.h>///Now (1)
void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glutSolidTeapot( 0.3 );
    glutSwapBuffers();
}
void timer(int t)///NOW timer!!!!
{
    PlaySoundA("bubbs.wav", NULL, SND_ASYNC);///Now (2) ///NOW timer!!!!
}
int main(int argc, char**argv)
{
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
    glutInitWindowSize(500,500);///變大了
    glutCreateWindow("week 14 timer");

    glutDisplayFunc(display);
    glutTimerFunc(3000, timer, 0);///NOW timer!!!!

    glutMainLoop();
}

(4)連續發出音效

#include <GL/glut.h>

#include <mmsystem.h>///Now (1)

#include <stdio.h>///printf()

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glutSolidTeapot( 0.3 );

    glutSwapBuffers();

}

void timer(int t)///NOW timer!!!!

{

    glutTimerFunc(1000, timer, t+1 );///NOW timer!!!! 起床要播下一個鬧鐘

    printf("timer(t) 的 t是 %d\n", t);///順便印一下現在的t是多少

    PlaySoundA("fart.wav", NULL, SND_ASYNC);///Now (2) ///NOW timer!!!!

}

int main(int argc, char**argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutInitWindowSize(500,500);///變大了

    glutCreateWindow("week 14 timer");

    glutDisplayFunc(display);

    glutTimerFunc(3000, timer, 0);///NOW timer!!!!

    glutMainLoop();

}

(5)每一秒轉33度

#include <GL/glut.h>

#include <mmsystem.h>///Now (1)

float angle=0;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glRotatef(angle, 0,0,1);

        glutSolidTeapot( 0.3 );

    glPopMatrix();

    glutSwapBuffers();

}

void timer(int t)///NOW timer!!!!

{

    /// 1000 ms = 1 sec,  30 ms = 1/33 sec , 33 fps

    glutTimerFunc(30, timer, t+1 );///NOW timer!!!! 起床要播下一個鬧鐘

    angle += 1;

    glutPostRedisplay();///系統重繪畫面

}

int main(int argc, char**argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutInitWindowSize(500,500);///變大了

    glutCreateWindow("week 14 timer");

    glutDisplayFunc(display);

    glutTimerFunc(3000, timer, 0);///NOW timer!!!!

    glutMainLoop();

}

(6)觀察內插法

(7)用內插法讓茶壺水平移動

#include <GL/glut.h>

#include <mmsystem.h>///Now (1)

float angle=0;

float nowX=0;///NOW2

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        ///glRotatef(angle, 0,0,1);

        glTranslatef(nowX, 0, 0);///NOW2

        glutSolidTeapot( 0.3 );

    glPopMatrix();

    glutSwapBuffers();

}

void timer(int t)///NOW timer!!!!

{

    /// 1000 ms = 1 sec,  30 ms = 1/33 sec , 33 fps

    glutTimerFunc(30, timer, t+1 );///NOW timer!!!! 起床要播下一個鬧鐘

    float alpha = (t%33) / 33.0;///NOW2 alpha 內插

    nowX = alpha* 1 + (1-alpha)* -1 ;///NOW2

    angle += 1;

    glutPostRedisplay();///系統重繪畫面

}

int main(int argc, char**argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutInitWindowSize(500,500);///變大了

    glutCreateWindow("week 14 timer");

    glutDisplayFunc(display);

    glutTimerFunc(1000, timer, 0);///NOW timer!!!!

    glutMainLoop();

}

(8)用內插法