week12_wendy

電腦圖學 學習日誌

week12

• 主題: 聲音、音效、音樂
• 實作: 播放 WAV檔
• 實作: 播放 MP3檔
• 實作: GLUT .cbp 專案檔 的設定 (執行目錄、include/lib目錄、link lib檔)

(一)播放WAV檔

播放聲音

#include <windows.h>
為了下面的DWRO
#include <mmsystem.h>
裡面有PlaySound函式

int main()
{
    PlaySoundA("llj1p-0y7jq.wav",NULL,SND_SYNC);
    把wav檔放在freeglut\bin資料夾中
}

播放聲音&配合keyboard函式座小鍵盤效果

#include <windows.h>

#include <mmsystem.h>

#include <GL/glut.h>

void display()

{

}

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

{

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

    ASYNC不停頓 SYNC會停頓

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

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

    if(key=='4')PlaySoundA("fa.wav",NULL,SND_ASYNC);

    if(key=='5')PlaySoundA("so.wav",NULL,SND_ASYNC);

}

int main(int argc,char**argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week2_music");

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);   鍵盤函式

    glutMainLoop();

}

(二)播放mp3檔

必須先把CMP3_MCI.h檔放在Project

#include <windows.h>

#include <mmsystem.h>

#include <GL/glut.h>

#include "CMP3_MCI.h" 

CMP3_MCI mp3;    宣告物件變數(mp3)

void display()

{

}

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

{

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

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

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

    if(key=='4')PlaySoundA("fa.wav",NULL,SND_ASYNC);

    if(key=='5')PlaySoundA("so.wav",NULL,SND_ASYNC);

}

int main(int argc,char**argv)

{

    mp3.Load("music2.mp3");   音樂檔案放置

    mp3.Play();

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week2_music");

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

    glutMainLoop();

}

鍵盤合弦設定

⇒

#include <windows.h>

#include <mmsystem.h>

#include <GL/glut.h>

#include "CMP3_MCI.h"

CMP3_MCI mp3;       

宣告物件變數(mp3)

CMP3_MCI DO,RE,MI,FA,SO;      

宣告5個物件變數(音符)

void display()

{

}

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

{

    if(key=='1')DO.Play();

    if(key=='2')RE.Play();

    if(key=='3')MI.Play();

    if(key=='4')FA.Play();

    if(key=='5')SO.Play();

}

int main(int argc,char**argv)

{

    DO.Load("do.wav");RE.Load("re.wav");MI.Load("mi.wav");

    FA.Load("fa.wav");SO.Load("so.wav");

    ///mp3.Load("music2.mp3");

    ///mp3.Play();

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week2_music");

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

    glutMainLoop();

}

(三)如合獨立執行專案檔

遇到的問題:

在之前的課程中我們要執行自己建立的專案檔，但執行目錄的路徑卻指向

⇒C:\Users\Administrator\Desktop\freeglut\bin

並非在我們的project上執行

解決方法:

到project中開啟 XXX.cbp檔

更改路徑 "C:\Users\Administrator\Desktop\freeglut\bin" ⇒"."

(四)變化

#include <windows.h>

#include <mmsystem.h>

#include <GL/glut.h>

#include "CMP3_MCI.h"

CMP3_MCI mp3;

CMP3_MCI DO,RE,MI,FA,SO;

float ballX=0,ballY=0,dx=0.05,dy=0.03;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glTranslatef(ballX, ballY, 0);

        glutSolidSphere(0.1 ,30 ,30);

    glPopMatrix();

    glutSwapBuffers();

}

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

{

    if(key=='1')DO.Play();

    if(key=='2')RE.Play();

    if(key=='3')MI.Play();

    if(key=='4')FA.Play();

    if(key=='5')SO.Play();

}

void timer(int t)

{

    glutTimerFunc(50, timer,t+1);

    ballX+=dx;

    ballY+=dy;

    if(ballX>=1){

        DO.Play();

        dx = -dx;

    }

    if(ballX<=-1){

        RE.Play();

        dx = -dx;

    }

    if(ballY>=1){

        MI.Play();

        dx = -dy;

    }if(ballX<=-1){

        FA.Play();

        dx = -dy;

    }

    glutPostRedisplay();

}

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

{

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

}

int main(int argc,char**argv)

{

    DO.Load("do.wav");RE.Load("re.wav");MI.Load("mi.wav");

    FA.Load("fa.wav");SO.Load("so.wav");

    ///mp3.Load("music2.mp3");

    ///mp3.Play();

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week2_music");

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

    glutTimerFunc(50, timer,0);

    glutMouseFunc(mouse);

    glutMainLoop();

}