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emitter_vrpn.H

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#ifndef _emitter_vrpn_H_
#define _emitter_vrpn_H_

#include "dev/emitter.H"
#include "dev/polled.H"
#include "vrpn/vrpn_Tracker.h"

class TempEvent {
   protected:
      double  _time_stamp;
      Wtransf _tracker_to_device;
   public:
      TempEvent(double time_stamp = -1, cWtransf &tracker_to_device= Wtransf())
         :_time_stamp(time_stamp), _tracker_to_device(tracker_to_device) {}
      double    time_stamp() const        { return _time_stamp; }
      cWtransf &tracker_to_device() const { return _tracker_to_device; }
      bool operator== (const TempEvent &event) { cerr << "TempEvent == called"
         << endl; return true; }
};
//
// A VRPN tracker (which is a set of what we call trackers which all 
// happen to be on the same physical emitter device set) 
//
class DEVemitter_VRPN : public DEVemitter, public DEVpolled {
 protected:
   vrpn_Tracker_Remote *_vrpndev;
   int                  _new_data_flag;
   ARRAY<TempEvent>     _tracker_events;

   static  void     vrpn_tracker_handler(void *emtr, const vrpn_TRACKERCB info);

   virtual void     clear_new_data_flag()       { _new_data_flag = 0; }
   virtual void     set_new_data_flag()         { _new_data_flag = 1; }
   virtual int      new_data_flag()       const { return _new_data_flag; }

   /* ------------- DEVpolled methods --------------- */
   void             do_poll();

 public:
            DEVemitter_VRPN(Cstr_ptr &dev_name);
   virtual ~DEVemitter_VRPN();
};

#endif

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