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File indexing completed on 2024-04-06 12:31:17
0001 // 0002 // 0003 // File: hitfit/private/Objpair.h 0004 // Purpose: Helper class for Pair_Table. 0005 // Created: Jul, 2000, sss, based on run 1 mass analysis code. 0006 // 0007 // An `Objpair' consists of two object indices in a Fourvec_Event, 0008 // plus a value for each constraint. This value is +1 if these two objects 0009 // are used on the lhs of that constraint, -1 if they are used on the rhs 0010 // of that constraint, and 0 if they are not used by that constraint. 0011 // 0012 // CMSSW File : interface/Objpair.h 0013 // Original Author : Scott Stuart Snyder <snyder@bnl.gov> for D0 0014 // Imported to CMSSW by Haryo Sumowidagdo <Suharyo.Sumowidagdo@cern.ch> 0015 // 0016 0017 /** 0018 @file Objpair.h 0019 0020 @brief Represent a pair of objects in Pair_Table. 0021 0022 @author Scott Stuart Snyder <snyder@bnl.gov> 0023 0024 @par Creation date: 0025 Jul 2000. 0026 0027 @par Modification History: 0028 Apr 2009: Haryo Sumowidagdo <Suharyo.Sumowidagdo@cern.ch>: 0029 Imported to CMSSW.<br> 0030 Nov 2009: Haryo Sumowidagdo <Suharyo.Sumowidagdo@cern.ch>: 0031 Added doxygen tags for automatic generation of documentation. 0032 0033 @par Terms of Usage: 0034 With consent for the original author (Scott Snyder). 0035 0036 */ 0037 0038 #ifndef HITFIT_OBJPAIR_H 0039 #define HITFIT_OBJPAIR_H 0040 0041 #include <vector> 0042 #include <iosfwd> 0043 0044 namespace hitfit { 0045 0046 /** 0047 @brief Represent a pair of objects in Pair_Table. 0048 0049 An Objpair consists of two object indices in a Fourvec_Event, 0050 plua a value for each constraint. This value is defined as: 0051 - +1 if these two objects are used on the left-hand side of the 0052 constraint. 0053 - -1 if these two objects are used on the right-hand side of the 0054 constraint. 0055 0 if these two objects are not used by that constraint. 0056 0057 */ 0058 class Objpair 0059 // 0060 // Purpose: Helper class for Pair_Table. 0061 // 0062 { 0063 public: 0064 // Constructor. I and J are the two object indices, and NCONSTRAINTS 0065 // is the number of constraints in the problem. 0066 /** 0067 @brief Constructor 0068 0069 @param i Index of the first object. 0070 0071 @param j Index of the second object. 0072 0073 @param nconstraints The number of constraints in the problem. 0074 */ 0075 Objpair(int i, int j, int nconstraints); 0076 0077 // Set the value for constraint K (0-based) to VAL. 0078 /** 0079 @brief Set the value for a constraint to a value. 0080 0081 @param k The index of the constraint, index starts from 0. 0082 0083 @param val The value to set for this constraint. 0084 */ 0085 void has_constraint(std::vector<signed char>::size_type k, int val); 0086 0087 // Get back the indices in this pair. 0088 /** 0089 @brief Return the index of the first object. 0090 */ 0091 int i() const; 0092 0093 /** 0094 @brief Return the index of the second object. 0095 */ 0096 int j() const; 0097 0098 // Retrieve the value set for constraint K. 0099 /** 0100 @brief Retrieve the value set for a constraint. 0101 0102 @param k The index of the constraint, index starts from 0. 0103 */ 0104 int for_constraint(std::vector<signed char>::size_type k) const; 0105 0106 // Print this object. 0107 0108 friend std::ostream& operator<<(std::ostream& s, const Objpair& o); 0109 0110 private: 0111 // The object indices for this pair. 0112 0113 /** 0114 Index of the first object. 0115 */ 0116 int _i; 0117 0118 /** 0119 Index of the second object. 0120 */ 0121 int _j; 0122 0123 // The list of values for each constraint. 0124 /** 0125 The list of values for each constraint. 0126 */ 0127 std::vector<signed char> _for_constraint; 0128 }; 0129 0130 } // namespace hitfit 0131 0132 #include "TopQuarkAnalysis/TopHitFit/interface/Objpair.i" 0133 0134 #endif // not HITFIT_OBJPAIR_H
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