2018電腦圖學A: Week 13 張宇涵

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Week13 2018/05/25

(1) 主題: 寫檔案，讀檔案
(2) 主題: 控制關節

(3) 主題: 動作內插

(3) 作業: 會動的機器人

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Class practice1 寫檔案，讀檔案

1. 開啟codeblocks | flie | New | Empty file | 存檔

2.寫出以下的程式:

#include <stdio.h>
int main()
{
FILE * fout = fopen("output.txt", "w+");
///"*"為指標，fin=file input ，fout=file output
///FILE的指標 FILE開黨檔名要寫write新增檔案，w+為能讀寫檔案，w為只能寫
///printf("Hello world\n");
fprintf(fout,"Hello world\n");
}

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Class practice2 寫檔案，讀檔案，用glut改寫

1. 開啟glut專案檔，並且改寫main.cpp，以下為改寫的程式 :

#include <GL/glut.h>

#include <stdio.h>///要檔案

FILE * fout = NULL;///(0)宣告檔案的指標,一開始是空的

float angle=0, angle2=90, angle3=60;///準備3個角度的值

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

{

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

{

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

///上面這行只有第一次案s鍵，才會有值，才fopen

///因為第一按s鍵，fout 名花有主，不會再重複開檔案

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

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

}///3個角度的值印到檔案去

}

///打光前的陣列之前，全部刪掉

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 };

/* Program entry point */

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");

///以下刪掉

///glutReshapeFunc(resize);

glutDisplayFunc(display);

glutKeyboardFunc(keyboard);

///glutKeyboardFunc(key);

///glutIdleFunc(idle);

glClearColor(1,1,1,1);

///glEnable(GL_CULL_FACE);

///glCullFace(GL_BACK);

2.下列為開啟後的結果，一開始在glutfree|bin裡頭不會有output.txt檔案

3.按下s或是w後會出現一開始設定的值，並且會輸入進output檔案裡

4.畫出壺，並且可以用滑鼠移動它

void display ()

{

glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

glPushMatrix();

glutSolidTeapot(0.3);

glPushMatrix();

glTranslatef(0.4,0,0);

glRotatef(angle, 0, 0, 1);

glTranslatef(0.4,0,0);

glutSolidTeapot(0.3);

glPopMatrix();

glutSwapBuffers();

}

void motion(int x, int y)///Now:

{

angle=x;///Now: 角度會隨mouse motion而改值

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");

///以下刪掉

///glutReshapeFunc(resize);

glutDisplayFunc(display);

glutMotionFunc(motion);///Now: 加上motion事件

一執行時會出現下圖 :

用滑鼠按左鍵時可旋轉茶壺

fopen、fclose開檔關檔
r讀，a可讀可寫，w可寫

先關小黑在關小白，程式會掉---程式通常會寫出，但一旦沒寫出會完了

working目錄，

#include <GL/glut.h>
#include <stdio.h>///要檔案
FILE * fout = NULL;///(0)宣告檔案的指標,一開始是空的
FILE * fin = NULL;///Now4: (0)宣告(input)檔案的指標,一開始是空的
float angle=60, angle2=90, angle3=60;///準備3個角度的值
void keyboard(unsigned char key, int s, int y)
{
if(key=='s' || key =='S' || key =='w' || key=='W')
{
if(fout==NULL) fout = fopen("output.txt", "w+");
///上面這行只有第一次案s鍵，才會有值，才fopen
///因為第一按s鍵，fout 名花有主，不會再重複開檔案
printf("%.3f %.3f %.3f", angle ,angle2 ,angle3);
fprintf(fout, "%.3f %.3f %.3f", angle ,angle2 ,angle3);
}///3個角度的值印到檔案去

if(key=='r' || key =='R')///Now4:
{
if(fout==NULL) fout = fopen("output.txt", "r");///Now4: 第一次讀檔時,要先開檔
fprintf(fin, "%f %f %f", &angle ,&angle2 ,&angle3);///Now4: 讀入之前存取的檔案
glutPostRedisplay();///重寫畫面
}
}

///打光前的陣列之前，全部刪掉
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 };

/* Program entry point */

void display ()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glutSolidTeapot(0.3);
glPushMatrix();
glTranslatef(0.4,0,0);
glRotatef(angle, 0, 0, 1);
glTranslatef(0.4,0,0);
glutSolidTeapot(0.3);
glPopMatrix();
glPopMatrix();
glutSwapBuffers();
}
void motion(int x, int y)///Now:
{
angle=x;///Now: 角度會隨mouse motion而改值

if(fout==NULL) fout = fopen("output.txt", "w+");
printf("%.3f %.3f %.3f\n", angle ,angle2 ,angle3);
fprintf(fout, "%.3f %.3f %.3f\n", angle ,angle2 ,angle3);

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");

///以下刪掉
///glutReshapeFunc(resize);
glutDisplayFunc(display);
glutMotionFunc(motion);///Now: 加上motion事件
glutKeyboardFunc(keyboard);
///glutKeyboardFunc(key);
///glutIdleFunc(idle);

glClearColor(1,1,1,1);
///glEnable(GL_CULL_FACE);
///glCullFace(GL_BACK);

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;
}

2018電腦圖學A

2018年5月28日星期一

Week 13 張宇涵

沒有留言:

張貼留言

2018年5月28日 星期一

Week 13 張宇涵

沒有留言:

張貼留言

2018年5月28日星期一