//=============================================================================

#ifndef FEATURECORRELATOR_H
#define FEATURECORRELATOR_H

#include "percentBar.h"
#include "correlator.h"
#include "subWindow.h"

class featureCorrelator : public  correlator, public percentBar
{
public:
  featureCorrelator( const char *initProgressMsg, movieIO &src,
		     bool visible );
  
  vector<subWindowListAnim>
    buildTrackedFeatureList( const char *trackProgressMsg,
			     int minNumFeaturesPerFrm,
			     int minFeatureTrackLen,
			     int maxX=-1, int maxY=-1 );

  
private:
  int findMidInterval( vector<subWindowListAnim> trackedList,
		       int length, int startFrm );
  int numFeatsAtFrame( int frm, const vector<subWindowListAnim> &featList );
  
  bool findNearestCorrel( int srcFrame, int othFrame,
			  int srcX, int srcY, int sizeX, int sizeY,
			  int deltaX, int deltaY,
			  int searchWinX, int searchWinY,
			  float minAcceptCorrel,
			  int &bestX, int &bestY );

  subWindowListAnim trackFeatures( int srcFrame, const subWindow &src );

  float estimatePercent( int minNumFeats,
			 const vector<subWindowListAnim> &trackedList,
			 int length );

  
private:
  sortedSubWindowList *corners_;
  int *numCorners_;
  movieIO *movie_;
};


#endif // FEATURECORRELATOR_H