圖學week15

 今天一開始我們先學播聲音

因為沒有音檔，所以一開始應該會播錯誤訊息的音效

然而可能程式會錯誤無法播放

就必須在compilier>linker裡設定winmm

然後是MP3檔 要先去moodle下載CMP3_MCI.h

才能播放

#include <stdio.h>

#include "CMP3_MCI.h"

CMP3_MCI mp3;

int main()

{

    mp3.Load("07042111.mp3");

    mp3.Play();

    printf("隨便輸入數字程式就卡住了: ");

    int N;

    scanf("%d",&N);

}

然後我們把上週教的動畫程式碼複製過來

因為上週教的程式會動得很慢，所以我們要改善它

把myWrite()註解掉，在keyboard裡新增save的程式

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

{

    if(key=='s')myWrite();

    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();

    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(0.7,0.5,1.0,0.3);

        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,-1.0,0.3);

        glPopMatrix();

     glPopMatrix();

     glutSwapBuffers();

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    ///glutInitWindowSize(600,600);

    glutCreateWindow("week15");

    glutKeyboardFunc(keyboard);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutDisplayFunc(display);

    glutMainLoop();

}