/**
R3BKeepEventProbabilityMfi.h

This class reads the survival probability for an event/hit in a fiber of MFI from a file and save it to a global array.

Testing phase! Please report bugs to P.Schrock@gsi.de
*/



#ifndef R3BKEEPEVENTPROBABILITYMFI_H
#define R3BKEEPEVENTPROBABILITYMFI_H 1


#include "TMath.h"

#include     <string>



class R3BKeepEventProbabilityMfi
{

public:

/**
Default constructor. No input file. All fibers will get an efficiency of 100%.
*/
R3BKeepEventProbabilityMfi();

/**
Special constructor getting a filename as string and starts immediately the ReadProbabilityFromFile function.
*/
R3BKeepEventProbabilityMfi(std::string _filename);

/**
Defauld destructor.
*/
~R3BKeepEventProbabilityMfi();


/**
Saves survival probability for a hit in a fiber to a global array.
*/
void SetProbability(Int_t fiber, Double_t prob);

/**
Return the survival probability for a hit in a fiber.
*/
Double_t GetProbability(Int_t fiber);

/**
Reads the survival probability for a hit in a fiber from an external text file.

Note: the file is the same used as input for ggland, hence the format is fix!
One line looks like 'tree-keep-event-prob=1:0.000000,' with '1' the fiber number (starts counting from 1) and '0.000000' the event/hit survival probability, followed by a ','. Everything before the '=' will be deleted by this function. Comment lines are allowed, starting with '//'.

todo: add global efficiency as entry '0', if necessary.
*/
void ReadProbabilityFromFile(std::string filename);



protected:
// private:

/**
Survival probability for a hit in a fiber. Fibers start counting from '1'!
*/
Double_t fKeepEventProb[1025];


};




#endif