WEEK15 天氣陰

1-1. CodeBlocks / File / Empty File 檔名:week15-1_PlaySound.cpp

1-2

程式碼:

1-3要在 Setting / Compiler / Linker Settings /Add:wnmm

1-4 在 https://sound-effects.bbcrewind.co.uk/search 下載聲音

把下載的聲音放到執行目錄

PS還沒進入迴圈前，會是動物07074095.wav的聲音，按下1,2,時，便會進入迴圈，且不

用等待音檔撥放完，就可以按下一個數字撥放其他音檔。

3-1 wav (檔案較大)v.s mp3(檔案較小)，PlaySound()只能用原始的wav檔

3-2 到moodle下載 CMP3_MCI.h 放在同目錄中 檔名:week15-mp3.cpp的位置

每調好一個動作按s存檔，再按r就可以了，也可以到freeglut/bin/file.txt

完整程式碼:

#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<20 ; i++){

        printf(" %.1f ", angle[i]);

        fprintf(fout, " %.1f ",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<20 ; i++){

        fscanf(fin, "%f",&angle[i]);

    }

    glutPostRedisplay();

}

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

    oldX= x;

}

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

    if(key=='s') myWrite(); ///調好動作再存檔

    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 motion(int x,int y){

    angle[angleID] += (x-oldX);

    ///myWrite();

    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,-0.5);

    glPushMatrix();

        glTranslatef(0.3,0.4,0);

        glRotatef(angle[0],0,0,1);

        glTranslatef(-0.3,-0.4,0);

        glColor3f(1,0,0);

        glRectf(0.3,0.5,0.7,0.3);

        glPushMatrix();

            glTranslatef(0.7,0.4,0);

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

            glTranslatef(-0.7,-0.4,0);

            glColor3f(0,1,0);

            glRectf(0.7,0.5,1,0.3);

        glPopMatrix();

    glPopMatrix();

    glPushMatrix();

        glTranslatef(-0.3,0.4,0);

        glRotatef(angle[2],0,0,1);

        glTranslatef(0.3,-0.4,0);

        glColor3f(1,0,0);

        glRectf(-0.3,0.5,-0.7,0.3);

        glPushMatrix();

            glTranslatef(-0.7,0.4,0);

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

            glTranslatef(0.7,-0.4,0);

            glColor3f(0,1,0);

            glRectf(-0.7,0.5,-1,0.3);

        glPopMatrix();

    glPopMatrix();

    glutSwapBuffers();

}

int main(int argc, char**argv)

{

    glutInit( &argc, argv );

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week15-angles-TRT-again");

    glutKeyboardFunc(keyboard);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutDisplayFunc(display);

    glutMainLoop();

}