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ISVREngine.H

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#ifndef ISVRENGINE_H
#define ISVRENGINE_H

#include "ISApp.H"
#include "StatusBar.H"
#include "WallClockInt.H"

#define OUTSIDE_GLUE_CORE
#include <mlib/points.H>

class ISVREngine
{
public:

  // put the following function in all subclasses, not sure how to
  // make it virtual, since it's static?
  // static ISVREngine* createInstance(int argc, char **argv);
  
  static ISVREngine* instance() { return _instance; }

  virtual void readDisplaySettings();

  virtual void run(ISApp *app) = 0;

  virtual int maxScreenWidth() = 0;
  virtual int maxScreenHeight() = 0;


  virtual int numGlContexts() { return 1; }
  virtual int currentGlContext() { return 0; }

  void    setHeadXform(Wtransf m)  { _head = m; }
  Wtransf headXform(int usernum=0) { return _head; }

  virtual void setIOD(double iod) { _iod = iod; }
  virtual double iod()            { return _iod; }
  virtual void toggleStereo() {}


  Wpt displayTopLeft(int tile=0)     { return _topl[tile]; }     
  Wpt displayTopRight(int tile=0)    { return _topr[tile]; }    
  Wpt displayBottomLeft(int tile=0)  { return _botl[tile]; }  
  Wpt displayBottomRight(int tile=0) { return _botr[tile]; } 

  int displayHeightPixels(int tile=0) { return _h[tile]; } 
  int displayWidthPixels(int tile=0)  { return _w[tile]; }

  StatusBar* statusBar() { return _statusBar; }

  void quit() { _quit = 1; }

  double synchronizedTime() {
    if (_wallClockInt)
      return _wallClockInt->time();
    else {
      cerr << "ISVREngine:: No wallclock, can't get synchronized time." << endl;
      return 0.0;
    } 
  }

protected: 

  ISVREngine(int argc, char **argv);
  virtual ~ISVREngine() {}

  void processInput();
  
  void isInit();

  void isGLContextInit();

  static ISVREngine *_instance;

  ISApp    *_app;
  Wtransf   _head;
  double    _iod;
  int       _quit;

  Wpt_list _topl, _topr, _botl, _botr;
  ARRAY<int> _h, _w;
  ARRAY<int> _stereo;
  
  StatusBar    *_statusBar;
  WallClockInt *_wallClockInt;

};




#endif

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