#include <GL/glut.h>
#include <stdio.h>
float angle[20], oldX=0;
int angleID=0; ///0:第0個關節,1:第一個關節,2:第二個關節
FILE*fout=NULL, *fin=NULL;
void myWrite()
{
if(fin != NULL){
fclose(fin);
fin = NULL;
}
if(fout==NULL) fout=fopen("file.txt", "w+");
for(int i=0; i<20; i++){
printf( "%.2f" , angle[i]);
fprintf(fout, "%.2f", angle[i]);
}
printf("\n");
fprintf(fout,"\n");
}
void myRead()
{
if(fout!=NULL)
{
fclose(fout);
fout=NULL;
}
if(fin==NULL) fin=fopen("file.txt", "r");
for(int i=0; i<20; i++){
fscanf(fin, "%f", &angle[i]);
}
glutPostRedisplay(); ///重畫畫面
}
void keyboard(unsigned char key,int x,int y)
{
if(key=='r')myRead();
if(key=='s')myWrite(); ///save
if(key=='0')angleID=0; ///預設這是第一個
if(key=='1')angleID=1;
if(key=='2')angleID=2;
if(key=='3')angleID=3;
}
void mouse(int button, int state , int x, int y) ///mouse按下去
{
oldX = x;
}
void motion(int x,int y)
{
angle[angleID] += (x-oldX);
///myWrite();///沒有必要一直寫檔
oldX=x;
glutPostRedisplay();
}
void display()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glColor3f(1,1,1); ///白色
glRectf(0.3,0.5,-0.3,-0.2);
glPushMatrix();
glTranslatef(0.3,0.5,0); ///掛在0.5,0.5
glRotatef(angle[0],0,0,1);
glTranslatef(-0.3,-0.4,0);
glColor3f(1,0,0); ///紅色
glRectf(0.3,0.5,0.8,0.3); ///右上手臂
glPushMatrix();
glTranslatef(0.8,0.4,0);
glRotatef(angle[1],0,0,1);
glTranslatef(-0.8,-0.4,0);
glColor3f(0,1,0); ///綠色
glRectf(0.8,0.5,1.1,0.3);
glPopMatrix();
glPopMatrix();
glPushMatrix(); ///左半邊
glTranslatef(-0.3,0.5,0); ///掛在0.5,0.5
glRotatef(angle[2],0,0,1);
glTranslatef(+0.3,-0.4,0);
glColor3f(1,0,0); ///紅色
glRectf(-0.3,0.5,-0.8,0.3); ///左上手臂
glPushMatrix();
glTranslatef(-0.8,0.4,0);
glRotatef(angle[3],0,0,1);
glTranslatef(+0.8,-0.4,0);
glColor3f(0,1,0); ///綠色
glRectf(-0.8,0.5,-1.1,0.3); ///左下手肘
glPopMatrix();
glPopMatrix();
glutSwapBuffers();
}
int main(int argc,char ** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);
glutInitWindowSize(600,600);
glutCreateWindow("Week15 TRT angles again");
glutMouseFunc(mouse);
glutMotionFunc(motion);
glutKeyboardFunc(keyboard);
glutDisplayFunc(display);
glutMainLoop();
}
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