Reconstruction/MdcPatRec/MdcTrkRecon/include/MdcTrkRecon/MdcSegUsage.h

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//--------------------------------------------------------------------------
// File and Version Information:
//      $Id: MdcSegUsage.h,v 1.2 2009/12/16 09:02:47 zhangy Exp $
//
// Description:
//     Records usage of a single hit in one of my segments.  Association
//     with hit must be maintained externally.
//
// Environment:
//      Software developed for the BaBar Detector at the SLAC B-Factory.
//
// Author(s):
//  Steve Schaffner
//  Zhang Yao(zhangyao@ihep.ac.cn)  Migrate to BESIII
//------------------------------------------------------------------------
#ifndef MDCSEGUSAGE_H
#define MDCSEGUSAGE_H
 
class MdcSegUsage {
public:
  MdcSegUsage();
  virtual ~MdcSegUsage();
 
  inline bool usedSeg() const;
  inline bool usedAmbig( int i ) const;
  inline void setUsedAmbig( int i );
  void        killHit();
  bool        deadHit() const { return ( ( segUse & deadFlag() ) != 0 ); }
 
private:
  // Bit-mapping definitions for segment hit use word
  unsigned usedNegAmb() const { return 1u; }
  unsigned usedPosAmb() const { return 2u; }
  unsigned deadFlag() const { return 4u; }
 
  unsigned segUse;
 
  // Preempt
  MdcSegUsage& operator=( const MdcSegUsage& );
  MdcSegUsage( const MdcSegUsage& );
};
 
// inline functs:
bool MdcSegUsage::usedSeg( void ) const {
  return ( ( segUse & ( usedNegAmb() | usedPosAmb() ) ) != 0 );
}
 
void MdcSegUsage::setUsedAmbig( int i ) {
  if ( i <= 0 ) { segUse |= usedNegAmb(); }
  else { segUse |= usedPosAmb(); }
}
 
bool MdcSegUsage::usedAmbig( int ambig ) const {
  if ( ambig <= 0 ) { return ( usedNegAmb() & segUse ) != 0; }
  else { return ( usedPosAmb() & segUse ) != 0; }
}
 
#endif