2023電腦圖學二甲: ww-week11-鍵盤

1.加入按鍵：

新增Project / 選擇GLUT project

Go / Next / 先設定存放位置 / 再更改檔案名稱week11-1_keyboard

小葉老師上課軟體 / freeglut檔案複製到桌面 / 將lib/freeglut.a複製貼上後改成libglut32.a

按一下Esc(=27)茶壺視窗會結束

#include <GL/glut.h>
void display()
{
glutSolidTeapot(0.3);
glutSwapBuffers();
}
void keyboard(unsigned char key, int x, int y)
{
if(key==27) exit(0);//按Esc結束視窗
}
int main(int argc, char **argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
glutCreateWindow("week11");

glutDisplayFunc(display);
glutKeyboardFunc(keyboard);

glutMainLoop();
}

2.加入音樂：

新增Project / 選擇GLUT project / Go / Next / 先設定存放位置 / 再更改檔案名稱week11-2_keyboard_wav_playsound / 複製上一個程式 / 加入PlaySound函式撥放音樂

#include <windows.h>//放上面
#include <GL/glut.h>

void display()
{
glutSolidTeapot(0.3);
glutSwapBuffers();
}
void keyboard(unsigned char key, int x, int y)
{

if(key=='1')PlaySound("C:\\Users\\Administrator\\Desktop\\do_re_mi\\do.wav",NULL,SND_ASYNC);///按1時播放聲音do

if(key=='2')PlaySound("C:\\Users\\Administrator\\Desktop\\do_re_mi\\re.wav",NULL,SND_ASYNC);///絕對位置要兩個斜線

if(key=='3')PlaySound("C:\\Users\\Administrator\\Desktop\\do_re_mi\\mi.wav",NULL,SND_ASYNC);///PlaySound三個參數
}
int main(int argc, char **argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
glutCreateWindow("week11");

glutDisplayFunc(display);
glutKeyboardFunc(keyboard);

glutMainLoop();
}

3.手動把winmm加入lib咒語裡：

重新開啟CodeBlocks / 開新Empty file:week11-3_PlaySound.cpp /寫程式只有include windows.h和playsound的程式 / setting / compiler / Linker settings / 加上winmm咒語

※OpenCV要3個咒語,GLUT要5咒語,PlaySound要1咒語

#include <windows.h>
int main()
{
PlaySound("C:\\Users\\Administrator\\Desktop\\do_re_mi\\do.wav",NULL,SND_SYNC);//第三個參數SYNC等待同步,以免瞬間結束
PlaySound("C:\\Users\\Administrator\\Desktop\\do_re_mi\\re.wav",NULL,SND_SYNC);
PlaySound("C:\\Users\\Administrator\\Desktop\\do_re_mi\\mi.wav",NULL,SND_SYNC);
}

4.MP3檔：

開新專案week11-4_glut_mp3 / 在標頭20行位置加入#include "CMP3_MCI.h"插入外掛 / 將CMP3_MCI.h檔放到week11-4_glut_mp3目錄下 / 加入程式碼

...
#include "CMP3_MCI.h"///插入外掛
CMP3_MCI myMP3;///宣告變數

int main(int argc, char *argv[])
{
char filename[]="C:\\Users\\Administrator\\Desktop\\do_re_mi\\suzumi.mp3";
myMP3.Load(filename);
myMP3.Play();///播放
...