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RooNumConvolution.h
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1 /*****************************************************************************
2  * Project: RooFit *
3  * Package: RooFitCore *
4  * File: $Id: RooNumConvolution.h,v 1.4 2007/05/11 09:11:30 verkerke Exp $
5  * Authors: *
6  * WV, Wouter Verkerke, UC Santa Barbara, verkerke@slac.stanford.edu *
7  * DK, David Kirkby, UC Irvine, dkirkby@uci.edu *
8  * *
9  * Copyright (c) 2000-2005, Regents of the University of California *
10  * and Stanford University. All rights reserved. *
11  * *
12  * Redistribution and use in source and binary forms, *
13  * with or without modification, are permitted according to the terms *
14  * listed in LICENSE (http://roofit.sourceforge.net/license.txt) *
15  *****************************************************************************/
16 #ifndef ROO_NUM_CONVOLUTION
17 #define ROO_NUM_CONVOLUTION
18 
19 #include "RooAbsPdf.h"
20 #include "RooRealProxy.h"
21 #include "RooSetProxy.h"
22 #include "RooListProxy.h"
23 #include "RooNumIntConfig.h"
24 
25 class RooConvIntegrandBinding ;
26 class RooAbsIntegrator ;
27 class TH2 ;
28 
29 class RooNumConvolution : public RooAbsReal {
30 public:
31 
32  RooNumConvolution() ;
33 
34  RooNumConvolution(const char *name, const char *title,
35  RooRealVar& convVar, RooAbsReal& pdf, RooAbsReal& resmodel, const RooNumConvolution* proto=0) ;
36 
37  RooNumConvolution(const RooNumConvolution& other, const char* name=0) ;
38 
39  virtual TObject* clone(const char* newname) const { return new RooNumConvolution(*this,newname) ; }
40  virtual ~RooNumConvolution() ;
41 
42  Double_t evaluate() const ;
43 
44  RooNumIntConfig& convIntConfig() { _init = kFALSE ; return _convIntConfig ; }
45  const RooNumIntConfig& convIntConfig() const { _init = kFALSE ; return _convIntConfig ; }
46 
47  void clearConvolutionWindow() ;
48  void setConvolutionWindow(RooAbsReal& centerParam, RooAbsReal& widthParam, Double_t widthScaleFactor=1) ;
49 
50  void setCallWarning(Int_t threshold=2000) ;
51  void setCallProfiling(Bool_t flag, Int_t nbinX = 40, Int_t nbinCall = 40, Int_t nCallHigh=1000) ;
52  const TH2* profileData() const { return _doProf ? _callHist : 0 ; }
53 
54  // Access components
55  RooRealVar& var() const { return (RooRealVar&) _origVar.arg() ; }
56  RooAbsReal& pdf() const { return (RooAbsReal&) _origPdf.arg() ; }
57  RooAbsReal& model() const { return (RooAbsReal&) _origModel.arg() ; }
58 
59 protected:
60 
61  friend class RooNumConvPdf ;
62 
63  mutable Bool_t _init ;
64  void initialize() const ;
65  Bool_t redirectServersHook(const RooAbsCollection& newServerList, Bool_t mustReplaceAll, Bool_t nameChange, Bool_t isRecursive) ;
66 
67  virtual void printCompactTreeHook(std::ostream& os, const char* indent="") ;
68 
69  RooNumIntConfig _convIntConfig ; // Configuration of numeric convolution integral ;
70  mutable RooConvIntegrandBinding* _integrand ; //! Binding of Convolution Integrand function
71  mutable RooAbsIntegrator* _integrator ; //! Numeric integrator of convolution integrand
72 
73  RooRealProxy _origVar ; // Original convolution variable
74  RooRealProxy _origPdf ; // Original input PDF
75  RooRealProxy _origModel ; // Original resolution model
76 
77  mutable RooArgSet _ownedClonedPdfSet ; // Owning set of cloned PDF components
78  mutable RooArgSet _ownedClonedModelSet ; // Owning set of cloned model components
79 
80  mutable RooAbsReal* _cloneVar ; // Pointer to cloned convolution variable
81  mutable RooAbsReal* _clonePdf ; // Pointer to cloned PDF
82  mutable RooAbsReal* _cloneModel ; // Pointer to cloned model
83 
84  friend class RooConvGenContext ;
85  RooRealVar& cloneVar() const { if (!_init) initialize() ; return (RooRealVar&) *_cloneVar ; }
86  RooAbsReal& clonePdf() const { if (!_init) initialize() ; return (RooAbsReal&) *_clonePdf ; }
87  RooAbsReal& cloneModel() const { if (!_init) initialize() ; return (RooAbsReal&) *_cloneModel ; }
88 
89  Bool_t _useWindow ; // Switch to activate window convolution
90  Double_t _windowScale ; // Scale factor for window parameter
91  RooListProxy _windowParam ; // Holder for optional convolution integration window scaling parameter
92 
93  Int_t _verboseThresh ; // Call count threshold for verbose printing
94  Bool_t _doProf ; // Switch to activate profiling option
95  TH2* _callHist ; //! Histogram recording number of calls per convolution integral calculation
96 
97  ClassDef(RooNumConvolution,1) // Operator PDF implementing numeric convolution of 2 input functions
98 };
99 
100 #endif