旻_Week12

 電腦圖學 2023-05-03 Week12

1. 主題: 檔案讀寫
2. 主題: 鍵盤、滑鼠控制角度
3. 回家作業: 可控制關節角度的模型

Week12-1

1. 在CodeBlocks開一個的新的file，存在桌面檔名為week12-1.cpp

2. 加入以下程式碼

#include <stdio.h>

int main()

{

    FILE*fout=fopen("file.txt","w");

      printf("Hello World\n");

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

}

3. 執行結果，小黑會出現Hello Word，桌面上的.txt檔中的字為Hello Word在檔案裡

Week12-2

Week12-3

Week12-4 MNK控制角度

1. 在CodeBlocks開新的GLUT 

2. 加入以下程式碼

#include <stdio.h>
#include <GL/glut.h>
float teapotX=0,teapotY=0;
void display()
{
    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
    glPushMatrix();
        glTranslated(teapotX,teapotY,0);
        glutSolidTeapot(0.3);
    glPopMatrix();
    glutSwapBuffers();
}
void mouse(int button,int state,int x,int y)
{
    if(state==GLUT_DOWN)
    {
        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();
}

3. 執行結果，茶壺會跟著滑鼠點擊的地方移動

Week12-5 MNK控制角度而且會記錄下來
1. 繼續使用week12-4
2. 修改code
#include <stdio.h>
#include <GL/glut.h>
FILE*fout=NULL;
FILE*fin=NULL;
float teapotX=0,teapotY=0;
void display()
{
    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
    glPushMatrix();
        glTranslated(teapotX,teapotY,0);
        glutSolidTeapot(0.3);
    glPopMatrix();
    glutSwapBuffers();
}
void mouse(int button,int state,int x,int y)
{
    if(state==GLUT_DOWN)
    {
        teapotX=(x-150)/150.0;
        teapotY=(150-y)/150.0;
        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);
    glutKeyboardFunc(keyboard);
    glutMainLoop();
}
3. 執行結果，先用滑鼠點擊紀錄茶壺位置，再按空白鍵回放之前紀錄的位置


Week12-6 更改工作執行目錄
1. 繼續使用week12-4
 2. 更改工作目錄設定(右鍵->properties)
3. 將freeglut/bin/freeglut.dll複製到week12-4資料夾中
4. 執行結果，file4.txt會在week12-4資料夾中
5. 更改Release路徑為"."，並save everything