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/*  Project Starshatter 4.6
    Destroyer Studios LLC
    Copyright © 1997-2006. All Rights Reserved.

    SUBSYSTEM:    Stars.exe
    FILE:         TrackIR.h
    AUTHOR:       John DiCamillo


    OVERVIEW
    ========
    TrackIR head tracker interface class
*/

#ifndef TrackIR_h
#define TrackIR_h

#include "Types.h"

// +--------------------------------------------------------------------+

class TrackIR
{
public:
   TrackIR();
   ~TrackIR();

   DWORD    ExecFrame();

   bool     IsRunning()    const { return running; }
   double   GetAzimuth()   const { return az; }
   double   GetElevation() const { return el; }

   double   GetX()         const { return x;  }
   double   GetY()         const { return y;  }
   double   GetZ()         const { return z;  }

protected:

   bool     running;
   DWORD    stale_frames;
   DWORD    frame_signature;

   double   az;
   double   el;

   double   x; // vrt
   double   y; // vup
   double   z; // vpn (i think)
};

#endif TrackIR_h