呱! - Week12 - 鍵盤、滑鼠控制角度🦆

 Week12

step01

開啟空白檔案 > 存至桌面 > 命名為week12-1_printf_fprintf.cpp > 程式碼執行 > 到桌面目錄找到檔名為file.txt

開啟空白檔案

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檔案存至桌面 > 命名為week12-1_printf_fprintf.cpp

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程式碼執行 > 到桌面目錄找到檔名為file.txt

#include <stdio.h>

int main(){

    ///檔案指標fout=開檔案("檔名","用什麼模式")

    FILE*fout=fopen("file.txt","w");

    printf("Hello World\n");

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

}

-1

step02

檔案存至桌面 > 命名為week12-2_scanf_fscanf.cpp

程式碼執行 > 到桌面目錄找到檔名為file.txt

#include <stdio.h>

int main(){

    ///檔案指標fout=開檔案("檔名","用什麼模式")

    FILE*fin=fopen("file.txt","r");

    char line[100];

    fscanf(fin,"%s",line);

    printf("從file.txt讀到了:%s\n",line);

    fscanf(fin,"%s",line);

    printf("從file.txt讀到了:%s\n",line);

}

-2

要先把小黑視窗關掉file3.txt才會顯示文字

檔案存至桌面 > 命名為week12-3_scanf__printf_fscanf_fprintf.cpp

程式碼執行 > 到桌面目錄找到檔名為file.txt

#include <stdio.h>

int main(){

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

    int b[10]={};

    FILE*fout=fopen("file3.txt","w");

    for(int i=0;i<10;i++){

        printf("%d",a[i]);

        fprintf(fout,"%d ",a[i]);

    }

    printf("\n");

    fprintf(fout,"\n");

    fclose(fout);

    FILE*fin=fopen("file3.txt","r");

    for(int i=0;i<10;i++){

        fscanf(fin,"%d",&b[i]);

        printf("b%d:%d ",i,b[i]);

    }

    fclose(fin);

}

-3

使用keyboard mouse操控茶壺

#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){

    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();

}

-4

開GLUT檔

Project > Properties > Build targets  > Execution working dir > Debug和Release兩個都要改 > 預設設定改成. >  要Save everthing

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#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();

        glTranslatef(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();

}

-5

安裝Git GitBash

-cd desktop

-git clone https://github.com/Owoyayou/2023graphicsa

-cd 2023graphicsa

-start .

  (打開2023graphicsa資料夾，把今日程式碼檔案放進來)

-git add .

-git status

(開啟檔案總管)

-git config --global user.email ______________

-git config --global user.name Owoyayou

-git commit -m "week12"

-git push