week14

 今天一開始老師教我們利用指標fout寫檔案

執行程式後到目標資料夾就會看到多了一個file.txt檔案

然後是用fscanf來讀檔

#include <stdio.h>

int main()

{///檔案指標fout 開啟檔案(檔名,write模式)

    FILE * fout = fopen("file.txt","w+");

    fprintf(fout,"3.1415926\n");

    fclose(fout);///關閉檔案

    float angle=0;

    FILE * fin = fopen("file.txt","r");

    fscanf(fin,"%f",&angle);

    printf("讀到了角度:%f",angle);

    fclose(fin);

}

然後就可以搭配上周的程式碼

當手臂轉動時就會寫出座標

加上跳行讓他更好看

然後利用讀檔就可以讓他跑動畫

先手動讓他記錄好之後按住R就可以讓他跑出剛剛做的動作

#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=='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("week14");

    glutKeyboardFunc(keyboard);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutDisplayFunc(display);

    glutMainLoop();

}

然後老師教我們timer

#include <GL/glut.h>

#include <stdio.h>

void timer(int t)

{

    printf("起床,現在時間: %d\n",t);

    glutTimerFunc(1000,timer,t+1);

}

void display()

{

}

int main(int argc,char ** argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week14_timer");

    glutTimerFunc(5000,timer,0);

    glutDisplayFunc(display);

    glutMainLoop();

}

之後可以加上聲音

每跳一次文字就會響一次音效

#include <GL/glut.h>

#include <stdio.h>

#include <mmsystem.h>

void timer(int t)

{

    printf("我起床了! %d\n",t);

    PlaySound("do.wav",NULL,SND_ASYNC);

    glutTimerFunc(1000,timer,t+1);

}

void display()

{

}

int main(int argc,char ** argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("week14_timer");

    glutTimerFunc(5000,timer,0);

    glutDisplayFunc(display);

    glutMainLoop();

}