#include <iostream>
#include "vgl.h"
#include "Spiral.h"

using namespace std;

extern Spiral mySpiral_G;
extern bool DisplayHex_G;

void SpecialKeypress(int key, int x, int y) {
   return;
}

void KeyUp(unsigned char key, int x, int y) {
   return;
}

void SpecialUp(int key, int x, int y) {
   return;
}

void KeyHelp() {
    cout << endl;
    cout << "Keys " << endl;
    cout << "\tq,Q\tQuit" << endl;
    cout << "\ta\tStart Animation" << endl;
    cout << "\tA\tStop Animation" << endl;
    cout << "\th,?\tHelp" << endl;
    cout << "\tr,R\tRedisplay" << endl;
    cout << "\ts\tToggle Spiral display " << endl;
    cout << "\tt\tToggle Hex display " << endl;
    cout << endl;

    return;
}

void Animate() {
   mySpiral_G.NextTheta();
   glutPostRedisplay();
   return;
}

void StartAnimation() {
   glutIdleFunc(Animate);
   return;
}

void StopAnimation() {
   glutIdleFunc(NULL);
   return;
}


void Keypress(unsigned char key, int x, int y) {
   static int state = 1;

   bool redisplay = false;
   switch (key) {

      case 'a': StartAnimation();  
                break;
      case 'A': StopAnimation(); 
                break;

      case 's': mySpiral_G.ToggleDisplay();
                redisplay = true;
                break;

      case 't': DisplayHex_G = !DisplayHex_G;
                redisplay = true;
		break;

      case 'h': 
      case '?': KeyHelp();
                break;
      case 'Q': 
      case 'q': exit(0);

      case 'r':
      case 'R': redisplay = true;
                break;

      default:
      		cerr << "Unhandled keypress for key '" << key << "'" << endl;
   }

   if (redisplay) {
      glutPostRedisplay();
   }

   return;
}