ROOT_528-00b_version: include/RooTruthModel.h Source File

00001 /*****************************************************************************
00002  * Project: RooFit                                                           *
00003  * Package: RooFitCore                                                       *
00004  *    File: $Id: RooTruthModel.h,v 1.18 2007/05/11 10:14:56 verkerke Exp $
00005  * Authors:                                                                  *
00006  *   WV, Wouter Verkerke, UC Santa Barbara, verkerke@slac.stanford.edu       *
00007  *   DK, David Kirkby,    UC Irvine,         dkirkby@uci.edu                 *
00008  *                                                                           *
00009  * Copyright (c) 2000-2005, Regents of the University of California          *
00010  *                          and Stanford University. All rights reserved.    *
00011  *                                                                           *
00012  * Redistribution and use in source and binary forms,                        *
00013  * with or without modification, are permitted according to the terms        *
00014  * listed in LICENSE (http://roofit.sourceforge.net/license.txt)             *
00015  *****************************************************************************/
00016 #ifndef ROO_TRUTH_MODEL
00017 #define ROO_TRUTH_MODEL
00018 
00019 #include "RooResolutionModel.h"
00020 
00021 class RooTruthModel : public RooResolutionModel {
00022 public:
00023 
00024   enum RooTruthBasis { noBasis=0, expBasisMinus= 1, expBasisSum= 2, expBasisPlus= 3,
00025                                   sinBasisMinus=11, sinBasisSum=12, sinBasisPlus=13,
00026                                   cosBasisMinus=21, cosBasisSum=22, cosBasisPlus=23,
00027                                                                     linBasisPlus=33,
00028                                                                    quadBasisPlus=43,
00029                                   coshBasisMinus=51,coshBasisSum=52,coshBasisPlus=53,
00030                                   sinhBasisMinus=61,sinhBasisSum=62,sinhBasisPlus=63,
00031                        genericBasis=100 } ;
00032 
00033   enum BasisType { none=0, expBasis=1, sinBasis=2, cosBasis=3,
00034                    linBasis=4, quadBasis=5, coshBasis=6, sinhBasis=7 } ;
00035   enum BasisSign { Both=0, Plus=+1, Minus=-1 } ;
00036 
00037   // Constructors, assignment etc
00038   inline RooTruthModel() { }
00039   RooTruthModel(const char *name, const char *title, RooRealVar& x) ; 
00040   RooTruthModel(const RooTruthModel& other, const char* name=0);
00041   virtual TObject* clone(const char* newname) const { return new RooTruthModel(*this,newname) ; }
00042   virtual ~RooTruthModel();
00043   
00044   virtual Int_t basisCode(const char* name) const ;
00045 
00046   Int_t getGenerator(const RooArgSet& directVars, RooArgSet &generateVars, Bool_t staticInitOK=kTRUE) const;
00047   void generateEvent(Int_t code);
00048 
00049   Int_t getAnalyticalIntegral(RooArgSet& allVars, RooArgSet& analVars, const char* rangeName=0) const ;
00050   Double_t analyticalIntegral(Int_t code, const char* rangeName=0) const ;
00051 
00052 protected:
00053   virtual Double_t evaluate() const ;
00054   virtual void changeBasis(RooFormulaVar* basis) ;
00055 
00056   ClassDef(RooTruthModel,1) // Truth resolution model (delta function)
00057 };
00058 
00059 #endif