/*****************************************************************************
 * Project: RooFit                                                           *
 * Package: RooFitCore                                                       *
 * @(#)root/roofitcore:$Id$
 * Authors:                                                                  *
 *   WV, Wouter Verkerke, UC Santa Barbara, verkerke@slac.stanford.edu       *
 *   DK, David Kirkby,    UC Irvine,         dkirkby@uci.edu                 *
 *                                                                           *
 * Copyright (c) 2000-2005, Regents of the University of California          *
 *                          and Stanford University. All rights reserved.    *
 *                                                                           *
 * Redistribution and use in source and binary forms,                        *
 * with or without modification, are permitted according to the terms        *
 * listed in LICENSE (http://roofit.sourceforge.net/license.txt)             *
 *****************************************************************************/

//////////////////////////////////////////////////////////////////////////////
//
// BEGIN_HTML
// RooRangeBoolean
// END_HTML
//

#include "RooFit.h"

#include "Riostream.h"
#include "Riostream.h"
#include <math.h>
#include "TMath.h"

#include "RooRangeBoolean.h"
#include "RooAbsReal.h"
#include "RooRealVar.h"
#include "RooArgList.h"
#include "RooMsgService.h"
#include "TMath.h"

using namespace std;

ClassImp(RooRangeBoolean)
;


//_____________________________________________________________________________
RooRangeBoolean::RooRangeBoolean()
{
  // Default constructor
}


//_____________________________________________________________________________
RooRangeBoolean::RooRangeBoolean(const char* name, const char* title, RooAbsRealLValue& x, const char* rangeName) :
  RooAbsReal(name, title),
  _x("x", "Dependent", this, x),
  _rangeName(rangeName)
{
}



//_____________________________________________________________________________
RooRangeBoolean::RooRangeBoolean(const RooRangeBoolean& other, const char* name) :
  RooAbsReal(other, name), 
  _x("x", this, other._x),
  _rangeName(other._rangeName)
{
  // Copy constructor
}




//_____________________________________________________________________________
RooRangeBoolean::~RooRangeBoolean() 
{
  // Destructor
}




//_____________________________________________________________________________
Double_t RooRangeBoolean::evaluate() const 
{
  // Return 1 if x is in range, zero otherwis
  Double_t xmin = ((RooAbsRealLValue&)_x.arg()).getMin(_rangeName.Data()) ;
  Double_t xmax = ((RooAbsRealLValue&)_x.arg()).getMax(_rangeName.Data()) ;
  
  Double_t ret = (_x >= xmin && _x < xmax) ? 1.0 : 0.0 ;
  return ret ;
}



//_____________________________________________________________________________
std::list<Double_t>* RooRangeBoolean::plotSamplingHint(RooAbsRealLValue& obs, Double_t /*xlo*/, Double_t /*xhi*/) const 
{
  if (string(obs.GetName())!=_x.arg().GetName()) {
    return 0 ;
  }

  list<Double_t>* hint = new list<Double_t> ;
  hint->push_back(((RooAbsRealLValue&)_x.arg()).getMin(_rangeName.Data())-1e-6) ;
  hint->push_back(((RooAbsRealLValue&)_x.arg()).getMin(_rangeName.Data())+1e-6) ;
  hint->push_back(((RooAbsRealLValue&)_x.arg()).getMax(_rangeName.Data())-1e-6) ;  
  hint->push_back(((RooAbsRealLValue&)_x.arg()).getMax(_rangeName.Data())+1e-6) ;  
  return hint ;
}