SelectedParticles Class Reference

#include <SelectedParticles.h>

Collaboration diagram for SelectedParticles:

Public Member Functions
	SelectedParticles ()
	SelectedParticles (const std::vector< unsigned > &indices)
void	Set (const std::vector< unsigned > &onoffBits)
void	SetMaxBits (unsigned maxbits)
void	SetBit (unsigned i, bool good=true)
	~SelectedParticles ()
std::string	displayBits () const
bool	isGood (unsigned i) const
unsigned	numGood () const
void	goodParticles (std::vector< unsigned > &goodparts) const
const std::vector< unsigned > &	AllBits () const

Private Attributes
std::vector< unsigned >	m_bits

Detailed Description

Definition at line 54 of file SelectedParticles.h.

Constructor & Destructor Documentation

SelectedParticles() [1/2]

SelectedParticles::SelectedParticles ( )

inline

Definition at line 58 of file SelectedParticles.h.

:m_bits(){;}

SelectedParticles() [2/2]

SelectedParticles::SelectedParticles

(

const std::vector< unsigned > &

indices

)

Definition at line 11 of file SelectedParticles.cxx.

                                                                   :m_bits(){
  int nind=indices.size();
  this->SetMaxBits(nind);
  for(int i=0;i<nind;++i){
    this->SetBit(indices[i],true);
  }
}

~SelectedParticles()

SelectedParticles::~SelectedParticles ( )

inline

Definition at line 65 of file SelectedParticles.h.

{;}

Member Function Documentation

AllBits()

const std::vector<unsigned>& SelectedParticles::AllBits ( ) const

inline

Definition at line 76 of file SelectedParticles.h.

{return m_bits;}

displayBits()

string SelectedParticles::displayBits

(

)

const

Definition at line 49 of file SelectedParticles.cxx.

{
  stringstream os;
  unsigned c;
  // Invariant: displayed j 32-bit ints so far
  unsigned nwords=m_bits.size();
  vector<unsigned>::const_iterator itb=m_bits.begin();
  int j=0;
  for (; itb != m_bits.end(); ++itb){
    // display mask will be a single 1 at the most significant bit
    unsigned displayMask = 1u << 31;
    // need to display the words in reverse order
    int temp = nwords - j - 1;
    ++j;
    // Invariant: displayed c bits in the unsigned int
    // displayMask has shifted its bits c places
    for (c = 0; c != 32; c++ ) {
      //if the current most significant bit in value temp is a 1
      // display it if not display zero
      os << (m_bits[temp] & displayMask ? '1' : '0');
      // shift the displayMask one bit, so there is a new
      // bit to check with value
      displayMask >>= 1;
      
      // group display by bytes
      if (c % 8 == 7 )
    os << ' ';
    }
    // a new line for each 32-bit line
    os << std::endl;
  }
  os << std::endl;
  return os.str();
}

goodParticles()

void SelectedParticles::goodParticles

(

std::vector< unsigned > &

goodparts

)

const

Definition at line 121 of file SelectedParticles.cxx.

{
  unsigned nbits=m_bits.size()*32;
  for(unsigned ibit=0; ibit<nbits; ++ibit) {
    if(isGood(ibit)) goodparts.push_back(ibit);
  }
  return;
}

isGood()

bool SelectedParticles::isGood

(

unsigned

i

)

const

Definition at line 84 of file SelectedParticles.cxx.

{
  
  unsigned c;
  unsigned nwords=m_bits.size();
  vector<unsigned>::const_iterator itb=m_bits.begin();
  unsigned j=ipart/32;
  if(j>nwords-1) return false;  // this should probably be an abort
  for (; itb != m_bits.end(); ++itb){
    // display mask will be a single 1 at the most significant bit
    unsigned displayMask = 1;
    
    // Invariant: displayed c bits in the unsigned int
    // displayMask has shifted its bits c places
    for (c = 0; c != 32; c++ ) {
      //if the current most significant bit in value temp is a 1
      // display it if not display zero
      if (m_bits[j] & displayMask) {
    if(c==ipart) return true;
      }
      // shift the displayMask one bit, so there is a new
      // bit to check with value
      displayMask <<= 1;
    }
  }
  return false;
}

numGood()

unsigned SelectedParticles::numGood

(

)

const

Definition at line 112 of file SelectedParticles.cxx.

{
  unsigned nwords=m_bits.size();
  if(nwords==0) return 0;
  vector<unsigned> goodparts;
  goodParticles(goodparts);
  return goodparts.size();
}

Set()

void SelectedParticles::Set ( const std::vector< unsigned > &  onoffBits )

inline

Definition at line 60 of file SelectedParticles.h.

{ m_bits=onoffBits;}

SetBit()

void SelectedParticles::SetBit	(	unsigned	i,
		bool	good = true
	)

Definition at line 19 of file SelectedParticles.cxx.

                                                   {
  unsigned nwords=m_bits.size();
  unsigned iword=i/32;
 
  if(iword+1>nwords){
    for(unsigned iw=nwords; iw<iword+1; ++iw){
      unsigned temp=0;
      m_bits.push_back(temp);
    }
  }
 
  if(good==false) return;
 
  unsigned bitnum = i % 32 ;
  unsigned temp = 1 << bitnum;
  m_bits[iword] |= temp;
 
  return;
}

SetMaxBits()

void SelectedParticles::SetMaxBits

(

unsigned

maxbits

)

Definition at line 39 of file SelectedParticles.cxx.

{
  unsigned nwords=maxbits/32;
  for(unsigned iw=0; iw<nwords+1; ++iw){
    unsigned temp=0;
    m_bits.push_back(temp);
  }
}

Member Data Documentation

m_bits

std::vector<unsigned> SelectedParticles::m_bits

private

Definition at line 78 of file SelectedParticles.h.

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The documentation for this class was generated from the following files:

• SelectedParticles.h
• SelectedParticles.cxx