Yiting_week14

 1.

1-1:

程式碼：

#include <stdio.h>

int main()

{

    FILE*fout=fopen("file.txt","w+");///開啟一個file,名字為file.txt

                                                               w+ = write+順便新增

    printf("Hello world\n");

    fprintf(fout,"Hello world\n");///file裡的字

    fclose(fout);

}

1-2:

程式碼：

#include <stdio.h>

int main()

{

    FILE*fout=fopen("file2.txt","w+");

    fprintf(fout,"angle1 %d\n",999);

    fclose(fout);

    char line[200];///字串

    int a;///angle

    FILE*fin=fopen("file2.txt","r");

    fscanf(fin,"%s %d",line,&a);

    printf("讀到了字串:%s 及整數%d\n",line,a);

    fclose(fin);

}

2.

2-1:

程式碼：

#include <GL/glut.h>

#include <stdio.h>///為了能用printf、fprintf、fopen......

float angle[20],oldX=0;

int angleID=0; ///0:第0個關節,1:第1個關節

FILE*fout=NULL;

void myWrite(){

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

    for(int i=0;i<20;i++){

        printf("%.2f",angle[i]);

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

    }

     printf("\n");

     fprintf(fout,"\n");

}

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

{

    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,-0.2);

    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");

    glutKeyboardFunc(keyboard);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutDisplayFunc(display);

    glutMainLoop();

}

黃底是新增的程式碼；

紫底是上周程式碼

2-2:

程式碼：

#include <GL/glut.h>

#include <stdio.h>///為了能用printf、fprintf、fopen......

float angle[20],oldX=0;

int angleID=0; ///0:第0個關節,1:第1個關節

FILE*fout=NULL,*fin=NULL;

void myWrite(){

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

    for(int i=0;i<20;i++){

        printf("%.2f",angle[i]);

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

    }

     printf("\n");

        fprintf(fout,"\n");

}

void myRead(){

    if(fout!=NULL){

        fclose(fout);

        fout=NULL;

    }///如果fout正在跑其他東西，把其他東西關掉

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

    for(int i=0;i<20;i++){

        fscanf(fin,"%f",&angle[i]);

    }

    glutPostRedisplay();///重畫畫面

}

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

{

    if(key=='r'){myRead();}///按r重製

    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,-0.2);

    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");

    glutKeyboardFunc(keyboard);

    glutMouseFunc(mouse);

    glutMotionFunc(motion);

    glutDisplayFunc(display);

    glutMainLoop();

}

3.動畫

3-1:

程式碼:

#include <GL/glut.h>

#include <stdio.h>

void timer(int t){///t的單位是毫秒，所以1000=1秒

    printf("鬧鐘%d 我起床了\n",t);

    printf("設定下一個鬧鐘\n");

    glutTimerFunc(1000,timer,t+1);///(等多久,timer,隔多久下一個)

    printf("設好鬧鐘，再回去睡");

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week14 timer");///等多久開始

    glutTimerFunc(3000,timer,0);

    glutDisplayFunc(display);

    glutMainLoop();

}

3-2:加聲音

程式碼:

#include <GL/glut.h>

#include <mmsystem.h>

#include <stdio.h>

void timer(int t){///t的單位是毫秒，所以1000=1秒

    printf("鬧鐘%d 我起床了\n",t);

    PlaySound("do.wav",NULL,SND_ASYNC);///播聲音

    ///音檔要放在freeglut的bin

    printf("設定下一個鬧鐘\n");

    glutTimerFunc(1000,timer,t+1);///第一個=等多久,第二個=timer,隔多久下一個

    printf("設好鬧鐘，再回去睡");

}

int main(int argc,char**argv)

{

    glutInit(&argc,argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week14 timer");///等多久開始

    glutTimerFunc(3000,timer,0);

    glutDisplayFunc(display);

    glutMainLoop();

}