#include <GL/glut.h>
#include <iostream>
#include <cstdlib>
using namespace std;

typedef unsigned char uchar;

void disp(void);
void idle(void);
void drawAxis(void);
void keyb(uchar key, int x, int y);

static float angle=0;
int main(int argc,char **argv){

  glutInit(&argc,argv);
  glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE);
  glutCreateWindow("Axis4");
  glClearColor(0.0,0.0,0.0,0.0);
  glutDisplayFunc(disp);
  glutIdleFunc(idle);
  glutKeyboardFunc(keyb);
  glutMainLoop();
}


void disp(void){
  glClear(GL_COLOR_BUFFER_BIT);
  glLoadIdentity();
  glRotatef(angle,1.0,1.0,0.0);

  drawAxis();
  glutSwapBuffers();
}


void drawAxis(){
  glBegin(GL_LINES);
  glColor3f(1.0,0.0,0.0);
  glVertex3f(0.0,0.0,0.0);
  glVertex3f(0.80,0.0,0.0);
  glColor3f(0.0,1.0,0.0);
  glVertex3f(0.0,0.0,0.0);
  glVertex3f(0.0,0.80,0.0);
  glColor3f(0.0,0.0,1.0);
  glVertex3f(0.0,0.0,0.0);
  glVertex3f(0.0,0.0,0.80);
  glEnd();

  glPushMatrix();
  glColor3f(1.0,0.0,0.0);
  glTranslatef(0.80,0.0,0.0);
  glRotatef(90,0.0,1.0,0.0);
  glutSolidCone(0.05,0.1,10,10);
  glPopMatrix();
  glPushMatrix();
  glColor3f(0.0,1.0,0.0);
  glTranslatef(0.0,0.80,0.0);
  glRotatef(-90,1.0,0.0,0.0);
  glutSolidCone(0.05,0.1,10,10);
  glPopMatrix();
  glPushMatrix();
  glColor3f(0.0,0.0,1.0);
  glTranslatef(0.0,0.0,0.80);
  glutSolidCone(0.05,0.1,10,10);
  glPopMatrix();
}


void idle(void){
  angle++;
  while(angle>360){
    angle-=360;
  }
  glutPostRedisplay();
}

void keyb(uchar k, int x, int y){
  if(k == 's'){
    glutIdleFunc(NULL);
  }else if(k == 'S'){
    glutIdleFunc(idle);
  }else if(k == 'q'){
    exit(0);
  }
}