week15

複習怎麼發出聲音

way1:

將TestSound.wav放在程式執行檔裡面

在執行之前Settings>>Complier>>Linker Settings加入winmm

```c

#include <windows.h>

int main()

{

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

}

```c

way2:

下載CMP3_MCI.h

放在程式的資料夾裡

```c

#include <windows.h>

#include <stdio.h>

#include "CMP3_MCI.h"

CMP3_MCI mp3;

int main()

{

    printf("Start\n");

    mp3.Load("TestSound.mp3");

    mp3.Play();

    int n;

    scanf("%d",&n);

    printf("End\n");

}

```c

把聲音加入上週的程式碼

```c

#include <GL/glut.h>

#include <stdio.h>

float angle[20]={},oldX=0;

int angleID=0;

FILE*fout=NULL,*fin=NULL;

void myWrite(){

    if(fout==NULL) fout=fopen("file.txt","w+");

    for(int i=0;i<8;i++){

        printf("%.2f ",angle[i]);

        fprintf(fout,"%.2f",angle[i]);

    }

    printf("\n");

    fprintf(fout,"\n");

}

void myRead(){

    if(fout!=NULL){fclose(fout),fout=NULL;}

    if(fin==NULL) fin=fopen("file.txt","r");

    for(int i=0;i<8; i++){

        fscanf(fin,"%f",&angle[i]);

    }

    glutPostRedisplay();

}

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

{

    if(key=='s')myWrite(); ///加這一行

    if(key=='r')myRead();

    if(key=='0')angleID=0;

    if(key=='1')angleID=1;

    if(key=='2')angleID=2;

    if(key=='3')angleID=3;

}

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

    oldX=x;

}

void motion(int x,int y){

    angle[angleID]+=(x-oldX);

    myWrite(); ///刪掉這一行

    oldX=x;

    glutPostRedisplay();

}

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glColor3f(1,1,1);

    glRectf(0.3,0.5,-0.3,-0.2);

    glPushMatrix();

        glTranslatef(0.3,0.5,0);

        glRotatef(angle[0],0,0,1);

        glTranslatef(-0.3,-0.4,0);

        glColor3f(1,0,0);

        glRectf(0.3,0.5,0.8,0.3);

        glPushMatrix();

            glTranslatef(0.8,0.4,0);

            glRotatef(angle[1],0,0,1);

            glTranslatef(-0.8,-0.4,0);

            glColor3f(0,1,0);

            glRectf(0.8,0.5,1.1,0.3);

            glPopMatrix();

    glPopMatrix();

    glPushMatrix();

        glTranslatef(-0.3,0.5,0);

        glRotatef(angle[2],0,0,1);

        glTranslatef(0.3,-0.4,0);

        glColor3f(1,0,0);

        glRectf(-0.3,0.5,-0.8,0.3);

        glPushMatrix();

            glTranslatef(-0.8,0.4,0);

            glRotatef(angle[3],0,0,1);

            glTranslatef(0.8,-0.4,0);

            glColor3f(0,1,0);

            glRectf(-0.8,0.5,-1.1,0.3);

            glPopMatrix();

    glPopMatrix();

    glutSwapBuffers();

}

int main (int argc,char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week14_2");

    glutKeyboardFunc(keyboard);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutDisplayFunc(display);

    glutMainLoop();

    return 0;

}

```c