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| 1 | #ifndef MARS_MFEventSelector
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| 2 | #define MARS_MFEventSelector
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| 3 |
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| 4 | #ifndef MARS_MFilter
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| 5 | #include "MFilter.h"
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| 6 | #endif
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| 7 |
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| 8 | class MParList;
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| 9 |
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| 10 | class MFEventSelector : public MFilter
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| 11 | {
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| 12 | private:
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| 13 | Int_t fNumTotalEvts; // Number of total events from which are selected
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| 14 | Int_t fNumSelectEvts; // Number of events to be selected
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| 15 | Float_t fSelRatio; // Selection Probability
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| 16 |
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| 17 | Int_t fNumSelectedEvts; //! Number of events which have been selected
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| 18 |
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| 19 | Bool_t fResult; //! Reseult of a single selection
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| 20 |
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| 21 | void StreamPrimitive(ofstream &out) const;
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| 22 |
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| 23 | Int_t PreProcess(MParList *pList);
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| 24 | Int_t Process();
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| 25 | Int_t PostProcess();
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| 26 |
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| 27 | enum { kNumTotalFromFile = BIT(14) };
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| 28 |
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| 29 | public:
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| 30 | MFEventSelector(const char *name=NULL, const char *title=NULL);
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| 31 |
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| 32 | Bool_t IsExpressionTrue() const { return fResult; }
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| 33 |
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| 34 | void SetNumTotalEvts(Int_t n) { fNumTotalEvts = n; ResetBit(kNumTotalFromFile); }
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| 35 | void SetNumSelectEvts(Int_t n) { fNumSelectEvts = n; }
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| 36 | void SetSelectionRatio(Float_t f);
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| 37 |
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| 38 | ClassDef(MFEventSelector, 0) // A filter to do a random selection of events
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| 39 | };
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| 40 |
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| 41 | #endif
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