劉 Week12 電腦圖學

 Week 12 主題:檔案File

第一堂課

建立一個空白檔案week12_1 printf_fprintf

#include <stdio.h>

int main(void)

{

    ///檔案指標 fout = fopen("檔名", "模式");

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

    printf("Hello world\n");

    fprintf(fout, "Hello world在檔案裡\n");

    return 0;

}

建立一 個新的空白檔案Week12-2_fscanf.

#include <stdio.h>

int main()

{

    char line[20];

    ///scanf("%s", line);

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

    fscanf(fin, "%s\n", line);

    printf("讀到了:%s\n", line);

    fscanf(fin, "%s\n", line);

    printf("讀到了:%s\n", line);

}

建立一 個新的空白檔案Week12-3

#include <stdio.h>

int main()

{

    int a[10] = {10,20,30,40,50,60,70,80,90,100};

    FILE * fout = fopen("file3.txt", "w");

    for(int i=0; i<10; i++){

        fprintf(fout, "%d ", a[i] );

        printf("%d ", a[i] );

    }

    fclose(fout);

    int b[10];

    FILE * fin = fopen("file3.txt","r");

    for(int i=0; i<10; i++){;

    fscanf(fin, "%d", &b[i]);

    printf("%d",b[i]);

}

fclose(fin);

}

第二堂課

建立GLUT專案week12-4 _keyboard_mouse

#include <stdio.h>

#include <GL/glut.h>

float teapotX = 0, teapotY = 0;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glTranslatef(teapotX, teapotY, 0);

        glutSolidTeapot( 0.3 );

    glPopMatrix();

    glutSwapBuffers();

}

void mouse (int button, int state, int x, int y)

{

    teapotX = (x-150)/150.0;

    teapotY = (150-y)/150.0;

    display();

}

int main(int argc, char** argv)

{

   glutInit(&argc, argv);

   glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

   glutCreateWindow("week12");

   glutDisplayFunc(display);

   glutMouseFunc(mouse);

   glutMainLoop();

}

#include <stdio.h>

#include <GL/glut.h>

float teapotX = 0, teapotY = 0;

FILE * fout = NULL;

FILE * fin = NULL;

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glTranslatef(teapotX, teapotY, 0);

        glutSolidTeapot( 0.3 );

    glPopMatrix();

    glutSwapBuffers();

}

void mouse (int button, int state, int x, int y)

{

    teapotX = (x-150)/150.0;

    teapotY = (150-y)/150.0;

    if(state==GLUT_DOWN){

        if(fout==NULL) fout = fopen("file4.txt", "w");

        fprintf(fout, "%f %f\n", teapotX, teapotY);

    }

    display();

}

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

{

   if(fin==NULL){

      fclose(fout);

      fin = fopen("file4.txt", "r");

   }

    fscanf(fin, "%f%f", &teapotX, &teapotY);

    display();

}

int main(int argc, char** argv)

{

   glutInit(&argc, argv);

   glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

   glutCreateWindow("week12");

   glutDisplayFunc(display);

   glutMouseFunc(mouse);

   glutMainLoop();

}

第三堂課

將codeblock的project的Debug和Release的路徑改成.

再將freeglut->lib->中的freeglut.dll

移到week12-4 _keyboard_mouse資料夾中