Week 13 宋侑恩

Week 13 - Part 1 - 檔案讀寫

開啟一個全新的空檔並命名為week13_fprintf.cpp

將程式碼打上

#include <stdio.h>

int main ()

{

    FILE * fout = fopen("output.txt","w+"); ///w+:要寫(write)新增檔案

    printf("Hello world\n");

}

執行過後會發現，在桌面上產生出了一個output.txt檔案

接著對程式碼作稍為的修改，讓原本在codeblocks執行視窗會印出來的Hello word印到output.txt裡

#include <stdio.h>

int main ()

{

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

    fprintf(fout,"Hello world\n");

}

Week 13 - Part 2 - 裡用鍵盤來寫檔

開啟一個新的專案

將程式碼打上

#include <GL/glut.h>

#include <stdio.h>

FILE * fout = NULL;

float angle=0,angle2=90,angle3=60;

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

{

    if(key=='s'||key=='S'||key=='w'||key=='W'){

        if(fout==NULL) fout=fopen("output.txt","w+");///只有第一次按下s/w建(為空值)，才會open

        printf("%.3f %.3f %.3f\n",angle,angle2,angle3);

        fprintf(fout,"%.3f %.3f %.3f\n",angle,angle2,angle3);

    }

}

const GLfloat light_ambient[]  = { 0.0f, 0.0f, 0.0f, 1.0f };

const GLfloat light_diffuse[]  = { 1.0f, 1.0f, 1.0f, 1.0f };

const GLfloat light_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };

const GLfloat light_position[] = { 2.0f, 5.0f, 5.0f, 0.0f };

const GLfloat mat_ambient[]    = { 0.7f, 0.7f, 0.7f, 1.0f };

const GLfloat mat_diffuse[]    = { 0.8f, 0.8f, 0.8f, 1.0f };

const GLfloat mat_specular[]   = { 1.0f, 1.0f, 1.0f, 1.0f };

const GLfloat high_shininess[] = { 100.0f };

void display()

{

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glutSwapBuffers();

}

int main(int argc, char *argv[])

{

    glutInit(&argc, argv);

    glutInitWindowSize(640,480);

    glutInitWindowPosition(10,10);

    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("GLUT Shapes");

    glutDisplayFunc(display);

    glutKeyboardFunc(keyboard);

    glClearColor(1,1,1,1);

    glEnable(GL_DEPTH_TEST);

    glDepthFunc(GL_LESS);

    glEnable(GL_LIGHT0);

    glEnable(GL_NORMALIZE);

    glEnable(GL_COLOR_MATERIAL);

    glEnable(GL_LIGHTING);

    glLightfv(GL_LIGHT0, GL_AMBIENT,  light_ambient);

    glLightfv(GL_LIGHT0, GL_DIFFUSE,  light_diffuse);

    glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);

    glLightfv(GL_LIGHT0, GL_POSITION, light_position);

    glMaterialfv(GL_FRONT, GL_AMBIENT,   mat_ambient);

    glMaterialfv(GL_FRONT, GL_DIFFUSE,   mat_diffuse);

    glMaterialfv(GL_FRONT, GL_SPECULAR,  mat_specular);

    glMaterialfv(GL_FRONT, GL_SHININESS, high_shininess);

    glutMainLoop();

    return EXIT_SUCCESS;

}

執行過後，在 C:\Users\N\Desktop\CCE\2下\電腦圖學\freeglut\bin 沒有output.txt檔

在按下s鍵之後，發現在 C:\Users\N\Desktop\CCE\2下\電腦圖學\freeglut\bin  產生了output.txt

接著將程式碼做修改的動作，好讓我們按下S/W可以記錄茶壺轉動的角度

Week 13 - Part 3 - 裡用數字鍵盤來控制關節

將老師給的程式碼開啟，執行後可以用程式碼來控制關節

#include <stdio.h>

#include <GL/glut.h>

FILE * fout=NULL;

FILE * fin = NULL;

float angle[20];

int now=0;///用數字鍵來切換關節

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

    if(key=='1') now=1;

    if(key=='2') now=2;

    if(key=='3') now=3;

    if(key=='4') now=4;

    if(key=='5') now=5;

    if(key=='6') now=6;

    if(key=='7') now=7;

    if(key=='8') now=8;

    ///啟用檔案

    if(key=='s' ||key=='S' ||key=='w' ||key=='W' ){

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

        for(int i=0;i<20;i++){

            printf("%.3f ",angle[i]);

            fprintf(fout, "%.3f ",angle[i]);

        }

        printf("\n");

        fprintf(fout,"\n");

        ///讀檔

        if(key=='r' ||key=='R'){

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

            for(int i=0;i<20;i++){

                fscanf(fin, "f",&angle[i]);

            }

            glutPostRedisplay();

        }

    }

}

const GLfloat light_ambient[]  = { 0.0f, 0.0f, 0.0f, 1.0f };

const GLfloat light_diffuse[]  = { 1.0f, 1.0f, 1.0f, 1.0f };

const GLfloat light_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };

const GLfloat light_position[] = { 2.0f, 5.0f, 5.0f, 0.0f };

const GLfloat mat_ambient[]    = { 0.7f, 0.7f, 0.7f, 1.0f };

const GLfloat mat_diffuse[]    = { 0.8f, 0.8f, 0.8f, 1.0f };

const GLfloat mat_specular[]   = { 1.0f, 1.0f, 1.0f, 1.0f };

const GLfloat high_shininess[] = { 100.0f };

void display(){

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glutSolidTeapot(0.3);

        glPushMatrix();

            glTranslatef(0.4,0,0);

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

            glTranslatef(0.4,0,0);

            glutSolidTeapot(0.3);///右手臂

            glPushMatrix();

                glTranslatef(0.4,0,0);

                glRotatef(angle[2],0,0,1);

                glTranslatef(0.4,0,0);

                glutSolidTeapot(0.3);///右手肘

            glPopMatrix();

        glPopMatrix();

        glPushMatrix();

            glTranslatef(-0.4,0,0);

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

            glTranslatef(-0.4,0,0);

            glutSolidTeapot(0.3);///左手臂

            glPushMatrix();

                glTranslatef(-0.4,0,0);

                glRotatef(angle[4],0,0,1);

                glTranslatef(-0.4,0,0);

                glutSolidTeapot(0.3);///左手肘

            glPopMatrix();

        glPopMatrix();

    glPopMatrix();

    glutSwapBuffers();

}

void motion(int x, int y){

    angle[now]=x;

    glutPostRedisplay();

}

int main(int argc, char *argv[])

{

    glutInit(&argc, argv);

    glutInitWindowSize(640,480);

    glutInitWindowPosition(10,10);

    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("GLUT Shapes");

    glutDisplayFunc(display);

    glutMotionFunc(motion);

    glutKeyboardFunc(keyboard);

    glClearColor(1,1,1,1);

    glEnable(GL_DEPTH_TEST);

    glDepthFunc(GL_LESS);

    glEnable(GL_LIGHT0);

    glEnable(GL_NORMALIZE);

    glEnable(GL_COLOR_MATERIAL);

    glEnable(GL_LIGHTING);

    glLightfv(GL_LIGHT0, GL_AMBIENT,  light_ambient);

    glLightfv(GL_LIGHT0, GL_DIFFUSE,  light_diffuse);

    glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);

    glLightfv(GL_LIGHT0, GL_POSITION, light_position);

    glMaterialfv(GL_FRONT, GL_AMBIENT,   mat_ambient);

    glMaterialfv(GL_FRONT, GL_DIFFUSE,   mat_diffuse);

    glMaterialfv(GL_FRONT, GL_SPECULAR,  mat_specular);

    glMaterialfv(GL_FRONT, GL_SHININESS, high_shininess);

    glutMainLoop();

}