Hello World_Week10

20210426 聲音&打光

今天學了要如何播放音樂

只要將音樂(wav檔)放到freeglut的bin資料夾裡面

再使用windiws套件中的PlatSound就可以播放音樂了!

#include <windows.h>

int main()

{

    PlaySound("pig.wav",NULL,SND_SYNC);

}

--------------------------------------------------------------------------------------------------------------------------

也可以用一樣的方式播很多段音樂

#include <windows.h>

int main()

{

    PlaySound("so.wav",NULL,SND_SYNC);

    PlaySound("mi.wav",NULL,SND_SYNC);

    PlaySound("mi.wav",NULL,SND_SYNC);

    PlaySound("fa.wav",NULL,SND_SYNC);

    PlaySound("re.wav",NULL,SND_SYNC);

    PlaySound("re.wav",NULL,SND_SYNC);

    PlaySound("do.wav",NULL,SND_SYNC);

    PlaySound("re.wav",NULL,SND_SYNC);

    PlaySound("mi.wav",NULL,SND_SYNC);

    PlaySound("fa.wav",NULL,SND_SYNC);

    PlaySound("so.wav",NULL,SND_SYNC);

    PlaySound("so.wav",NULL,SND_SYNC);

    PlaySound("so.wav",NULL,SND_SYNC);

}

--------------------------------------------------------------------------------------------------------------------------

因為音樂後面有一段沒聲音的部分

但用上面的方法就得等上一段完全播完才能播下一段

所以要用鍵盤來控制音樂播放的時間點

#include <windows.h>

#include <stdio.h>

int main()

{

    ///PlaySound("so.wav",NULL,SND_SYNC);///等待同步

    char c;

    while(1)

    {

        c=getchar();

        PlaySound("so.wav",NULL,SND_ASYNC);///不等待同步

    }

}

--------------------------------------------------------------------------------------------------------------------------

再來要用不同按鍵來播不同的聲音

#include <windows.h>

#include <stdio.h>

int main()

{

    ///PlaySound("so.wav",NULL,SND_SYNC);///等待同步

    char c;

    while(1)

    {

        c=getchar();

        if(c=='1') PlaySound("do.wav",NULL,SND_ASYNC);

        if(c=='2') PlaySound("re.wav",NULL,SND_ASYNC);

        if(c=='3') PlaySound("mi.wav",NULL,SND_ASYNC);

        if(c=='4') PlaySound("fa.wav",NULL,SND_ASYNC);

        if(c=='5') PlaySound("so.wav",NULL,SND_ASYNC);

        ///PlaySound("so.wav",NULL,SND_ASYNC);///不等待同步

    }

}

--------------------------------------------------------------------------------------------------------------------------

接下來要讓圖跟音樂一起出現

#include <windows.h>

#include <GL/glut.h>

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glutSolidTeapot(0.3);

    glutSwapBuffers();

}

void keyboard(unsigned char key,int x,int y)

{

    if(key=='1') PlaySound("do.wav",NULL,SND_ASYNC);

    if(key=='2') PlaySound("re.wav",NULL,SND_ASYNC);

    if(key=='3') PlaySound("mi.wav",NULL,SND_ASYNC);

}

int main(int argc, char** argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week10 sound");

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

    glutMainLoop();

}

--------------------------------------------------------------------------------------------------------------------------

然後要加入用滑鼠播放聲音的功能

#include <windows.h>

#include <GL/glut.h>

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glutSolidTeapot(0.3);

    glutSwapBuffers();

}

void keyboard(unsigned char key,int x,int y)

{///按下鍵盤即可播放聲音(wav檔)

    if(key=='1') PlaySound("do.wav",NULL,SND_ASYNC);

    if(key=='2') PlaySound("re.wav",NULL,SND_ASYNC);

    if(key=='3') PlaySound("mi.wav",NULL,SND_ASYNC);

}

void mouse(int button,int state,int x,int y)

{///按下滑鼠即可播放槍聲(wav檔)

    if(state==GLUT_DOWN) PlaySound("shot.wav",NULL,SND_ASYNC);

}

int main(int argc, char** argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week10 sound");

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

    glutMouseFunc(mouse);

    glutMainLoop();

}

--------------------------------------------------------------------------------------------------------------------------

前面播放的音樂都是wav檔的格式

接下來要改成播放mp3檔!

這邊要使用CMP3_MCI.h的套件 並跟程式碼放在同一個資料夾裡

要播放的mp3檔也是放在freeglut的bin資料夾裡面

這樣就可以載入及播放mp3檔了

接下來要學打光的方式

前面的茶壺因為沒有打光 所以看起來像是2D圖片

只要加上打光之後看起來就會變成3D物件了!