week14

1機器人2.0
控制許多不同關節

2.貼圖+背景

3.模型+貼圖

4.檔案

開貝殼專案
#include <stdio.h>
FILE *fout=NULL ,*fin=NULL;
int main(int argc,char**argv)
{
    if(fout==NULL) fout=fopen("output.txt","w+");//w是寫入檔案r是讀檔案
        fprintf(fout,"Hello World");

}

#include <GL/glut.h>
#include <stdio.h>
FILE *fout=NULL,*fin=NULL;
void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glutSolidTeapot(0.3);
    glutSwapBuffers();
}
void motion(int x, int y)
{
    if(fout==NULL)
    {
        fout=fopen("output.txt","w+");
    }
    fprintf(fout,"%d %d\n",x,y);
}
int main(int argc,char**argv)
{
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
    glutCreateWindow("3D");
    glutDisplayFunc(display);
    glutMotionFunc(motion);

    glutMainLoop();
}

放freeglut.dll進資料夾

設定好build option

出現茶壺

增加按鍵,當我按按鍵 r 能讓茶壺隨著茶壺隨著剛剛紀錄的滑鼠座標移動

#include <GL/glut.h>
#include <stdio.h>
FILE *fout=NULL,*fin=NULL;
int nowX=150, nowY=150;
void display()
{
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glPushMatrix();
        glTranslatef( (nowX-150)/150.0,-(nowY-150)/150.0, 0);
        glutSolidTeapot(0.3);
    glPopMatrix();
    glutSwapBuffers();
}
void motion(int x, int y)
{
    if(fout==NULL)
    {
        fout=fopen("output.txt","w+");
    }
    fprintf(fout,"%d %d\n",x,y);
}
void keyboard(unsigned char key, int x, int y)
{
    if(key=='r'){
        if(fin==NULL)fin=fopen("output.txt","r");
        fscanf(fin,"%d %d", &nowX, &nowY);
    }
    glutPostRedisplay();
}
int main(int argc,char**argv)
{
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
    glutCreateWindow("3D");
    glutDisplayFunc(display);
    glutMotionFunc(motion);
    glutKeyboardFunc(keyboard);

    glutMainLoop();
}

output.txt就會有一堆座標位置.