---

/home/slang/XVision2/src/Tracking/XVTracker.h

// *** BEGIN_XVISION2_COPYRIGHT_NOTICE ***
// *** END_XVISION2_COPYRIGHT_NOTICE ***

//-----------------------------------------------------------------------------
//
//  XVTracker.h
//
//  Sam Lang - 2.02.01
//
//-----------------------------------------------------------------------------

#ifndef _XVTRACKER_H_
#define _XVTRACKER_H_

#define DEFAULT_ITERATIONS 1

#include <XVInteractive.h>
#include <XVDrawable.h>
#include <Video.h>
#include <XVWindow.h>
#include <XVException.h>
#include <XVFeature.h>

class XVTrackerException : public XVException { protected:
  XVTrackerException() : XVException("XVTracker Expection") {} 
  XVTrackerException( char * err ) : XVException(err) {} };  

template <class SRCTYPE, class FEATURETYPE>
class XVTracker {

  typedef typename FEATURETYPE::STATE STATE;

 protected:

  SRCTYPE     & source;
  FEATURETYPE & feature;
  
  int stepsPerFrame;
  int frameNum;

 public:

  XVTracker(SRCTYPE & s, FEATURETYPE & f, int pf = DEFAULT_ITERATIONS) 
    : source(s), feature(f), stepsPerFrame(pf), frameNum(0) {};
  
  virtual typename FEATURETYPE::STATE init() = 0;
  virtual void track() throw (XVTrackerException) = 0;
  virtual typename FEATURETYPE::STATE nextState() throw (XVTrackerException) = 0;
};

template <class SRCTYPE, class WINTYPE, class FEATURETYPE>
class XVDisplayTracker : public XVTracker<SRCTYPE, FEATURETYPE> {

 protected:

  WINTYPE & window;

 public:

  XVDisplayTracker(SRCTYPE & s, WINTYPE & w, FEATURETYPE & f, int pf = DEFAULT_ITERATIONS) 
    : XVTracker<SRCTYPE, FEATURETYPE>(s, f, pf), window(w) {}

  virtual typename FEATURETYPE::STATE init();
  virtual void track() throw (XVTrackerException);
  virtual typename FEATURETYPE::STATE nextState() throw (XVTrackerException);
};

#include <XVTracker.icc>


#include <config.h>
#include <XVWindowX.h>
#include <XVImageRGB.h>
#include <XVImageScalar.h>

#define _REGISTER_XVTRACKER_(_FEATURE_TYPE_, _SRC_PIX_) \
template class XVTracker<Video< _SRC_PIX_ >, _FEATURE_TYPE_ >;

#define _REGISTER_XVDISPLAYTRACKER_(_FEATURE_TYPE_, _SRC_PIX_, _WIN_PIX_) \
template class XVTracker<Video< _SRC_PIX_ >, _FEATURE_TYPE_>; \
template class XVDisplayTracker<Video< _SRC_PIX_ >, XVInteractWindowX< _WIN_PIX_ >, _FEATURE_TYPE_>;

  
#endif

---