/data/refman/pasoursint/CMSSW_5_3_4/src/Alignment/CocoaModel/src/ParameterMgr.cc

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//   COCOA class implementation file
//Id:  ParameterMgr.cc
//CAT: Model
//
//   History: v1.0  10/11/01   Pedro Arce

#include "Alignment/CocoaModel/interface/ParameterMgr.h"
#include "Alignment/CocoaUtilities/interface/ALIUtils.h"
#include "Alignment/CocoaModel/interface/ALIUnitsTable.h"
#include <CLHEP/Random/RandGauss.h>
#include <CLHEP/Random/Random.h>
#include <cstdlib>
//----------------------------------------------------------------------------


ParameterMgr* ParameterMgr::theInstance = 0;

//----------------------------------------------------------------------------
ParameterMgr* ParameterMgr::getInstance()
{
  if( !theInstance ) {
    theInstance = new ParameterMgr;
  }

  return theInstance;

}


//----------------------------------------------------------------------------
ALIdouble ParameterMgr::getVal( const ALIstring& str, const ALIdouble dimensionFactor )
{
  //If there is a '*', the characters after '*' are the unit
  ALIint iast =  str.find('*');
  //  ALIdouble vl;
  if( iast != -1 ) {
    ALIstring valstr = str.substr( 0, iast );
    ALIstring unitstr = str.substr(iast+1, str.length() );

    //-    std::cout << iast << "parametermgr " << str << " " << valstr << " " << unitstr << std::endl;
    if( !ALIUtils::IsNumber( valstr ) ) {
      std::cerr << " ParameterMgr::getVal of an ALIstring that is not a number: " << valstr << std::endl;
      abort();
    }
 
    //-    std::cout << " getVal " <<  atof( valstr.c_str() ) << " * " << ALIUnitDefinition::GetValueOf(unitstr) << std::endl;
    return atof( valstr.c_str() ) * ALIUnitDefinition::GetValueOf(unitstr);
  } else {
  //If there is not a '*', use the dimensionFactor 
    if( !ALIUtils::IsNumber( str ) ) {
      //--- Check if it is referring to a previous parameter.
      ALIdouble val;
      if( getParameterValue( str, val ) ) {
        return val;
      } else {
        std::cerr << " ParameterMgr::getVal of an string that is not a number nor a previous parameter: " << str << std::endl;
        abort();
      }
    }


    //-    std::cout << "ParameterMgr::getVal " << atof( str.c_str() ) << " * " << dimensionFactor << std::endl;
    return atof( str.c_str() ) * dimensionFactor;
  }
}


//----------------------------------------------------------------------------
void ParameterMgr::addParameter( const ALIstring& name, const ALIstring& valstr )
{
  if( theParameters.find( name ) != theParameters.end() ) {
    if( ALIUtils::debug >= 1) std::cerr << "!! WARNING: PARAMETER " << name << " appears twice, it will take first value " << std::endl;
  } else {
    theParameters[name] = getVal( valstr );
  }

}


void ParameterMgr::setRandomSeed( const long seed )
{
  CLHEP::HepRandom::setTheSeed( seed );
}


//----------------------------------------------------------------------------
void ParameterMgr::addRandomGaussParameter( const ALIstring& name, const ALIstring& valMean, const ALIstring& valStdDev ) 
{
  if( theParameters.find( name ) != theParameters.end() ) {
    if( ALIUtils::debug >= 1) std::cerr << "!! WARNING: PARAMETER " << name << " appears twice, it will take first value " << std::endl;
  } else {
    ALIdouble mean = getVal( valMean );
    ALIdouble stddev = getVal( valStdDev );
    ALIdouble val = CLHEP::RandGauss::shoot( mean, stddev );
    theParameters[name] = val;
    if( ALIUtils::debug >= -2 ) std::cout << " addRandomGaussParameter "  << name << " " << valMean << " " << valStdDev << " = " << val << std::endl;
  }

}


//----------------------------------------------------------------------------
void ParameterMgr::addRandomFlatParameter( const ALIstring& name, const ALIstring& valMean, const ALIstring& valInterval ) 
{
  if( theParameters.find( name ) != theParameters.end() ) {
    if( ALIUtils::debug >= 1) std::cerr << "!! WARNING: PARAMETER " << name << " appears twice, it will take first value " << std::endl;
  } else {
    ALIdouble mean = getVal( valMean );
    ALIdouble interval = getVal( valInterval );
    ALIdouble val = CLHEP::HepRandom::getTheEngine()->flat();
    // flat between ]mean-interval, mean+interval[
    val = val * 2*interval + mean-interval;
    theParameters[name] = val;
    if( ALIUtils::debug >= 2 )std::cout << " addRandomFlatParameter " << name << " " << valMean << " " << valInterval << " = " << val << std::endl;
  }

}


//----------------------------------------------------------------------------
// get the parameter value if parameter name exists and return 1, else return 0
ALIint ParameterMgr::getParameterValue( const ALIstring& name, ALIdouble& val )
{
  //-  std::cout << " ParameterMgr::getParameterValu " << name << " " << std::endl;
  //---------- Convert negative parameters
  ALIstring namet = name;
  ALIint negpar = 1;
  if( namet[0] == '-' ) {
    negpar = -1;
    namet = namet.substr(1, namet.length() );
  }

  //---------- Find Parameter by name
  msd::iterator ite = theParameters.find( namet );
  if( ite == theParameters.end() ) {
    /*    msd::iterator ite2 = theParameters.find( name );
    for( ite2 = theParameters.begin(); ite2 != theParameters.end(); ite2++ ) {
      std::cout << "PARAMETER: " << (*ite2).first << " = " << (*ite2).second << std::endl;
    }
    */
    return 0;
  } else {
    val = (*ite).second * negpar;
    //-    std::cout << "PARAMETER: " << val << " name " << name << std::endl; 
    return 1;
  }

}