MathTools/interface/MathUtils.h

//--------------------------------------------------------------------------------------------------
// $Id: MathUtils.h,v 1.5 2009/02/18 15:38:26 loizides Exp $
//
// MathUtils
//
// Math utility functions.
//
// Authors: S.Xie, C.Loizides
//--------------------------------------------------------------------------------------------------

#ifndef MITCOMMON_MATHTOOLS_MATHUTILS_H
#define MITCOMMON_MATHTOOLS_MATHUTILS_H

#include "MitCommon/DataFormats/interface/Types.h"
#include <TMath.h>

namespace mithep
{
  class MathUtils {
    public:
      static Double_t AddInQuadrature(Double_t a, Double_t b);  
      static Double_t DeltaPhi(Double_t phi1, Double_t phi2);
      static Double_t DeltaPhi(const FourVector &v1, const FourVector &v2);
      static Double_t DeltaPhi(const FourVectorM &v1, const FourVectorM &v2);
      static Double_t DeltaR(Double_t phi1, Double_t eta1, Double_t phi2, Double_t eta2);
      static Double_t DeltaR(const FourVector &v1, const FourVector &v2);
      static Double_t DeltaR(const FourVectorM &v1, const FourVectorM &v2);
      template<class V1, class V2> static Double_t DeltaR(const V1 &v1, const V2 &v2);
      static Double_t Eta2Theta(Double_t eta);
      static Double_t Theta2Eta(Double_t theta);
  };
}

//--------------------------------------------------------------------------------------------------
template<class V1, class V2>
Double_t mithep::MathUtils::DeltaR(const V1 &v1, const V2 &v2)
{

  return mithep::MathUtils::DeltaR(v1.Phi(),v1.Eta(),v2.Phi(),v2.Eta());

}

#endif
Revision:	1.6
Committed:	Tue Mar 3 18:12:25 2009 UTC (16 years, 2 months ago) by bendavid
Content type:	text/plain
Branch:	MAIN
CVS Tags:	Mit_008pre2, Mit_008pre1
Changes since 1.5:	+12 -1 lines
Log Message:	Add catch-all templated DeltaR function
#	User	Rev	Content
1	sixie	1.1	//--------------------------------------------------------------------------------------------------
2	bendavid	1.6	// $Id: MathUtils.h,v 1.5 2009/02/18 15:38:26 loizides Exp $
3	sixie	1.1	//
4			// MathUtils
5			//
6	loizides	1.2	// Math utility functions.
7	sixie	1.1	//
8	loizides	1.2	// Authors: S.Xie, C.Loizides
9	sixie	1.1	//--------------------------------------------------------------------------------------------------
10
11	loizides	1.2	#ifndef MITCOMMON_MATHTOOLS_MATHUTILS_H
12			#define MITCOMMON_MATHTOOLS_MATHUTILS_H
13	sixie	1.1
14	loizides	1.2	#include "MitCommon/DataFormats/interface/Types.h"
15	sixie	1.1	#include <TMath.h>
16
17	loizides	1.3	namespace mithep
18	sixie	1.1	{
19	loizides	1.2	class MathUtils {
20			public:
21	loizides	1.4	static Double_t AddInQuadrature(Double_t a, Double_t b);
22			static Double_t DeltaPhi(Double_t phi1, Double_t phi2);
23			static Double_t DeltaPhi(const FourVector &v1, const FourVector &v2);
24	loizides	1.5	static Double_t DeltaPhi(const FourVectorM &v1, const FourVectorM &v2);
25	loizides	1.4	static Double_t DeltaR(Double_t phi1, Double_t eta1, Double_t phi2, Double_t eta2);
26			static Double_t DeltaR(const FourVector &v1, const FourVector &v2);
27	loizides	1.5	static Double_t DeltaR(const FourVectorM &v1, const FourVectorM &v2);
28	bendavid	1.6	template<class V1, class V2> static Double_t DeltaR(const V1 &v1, const V2 &v2);
29	loizides	1.4	static Double_t Eta2Theta(Double_t eta);
30			static Double_t Theta2Eta(Double_t theta);
31	loizides	1.2	};
32	sixie	1.1	}
33	bendavid	1.6
34			//--------------------------------------------------------------------------------------------------
35			template<class V1, class V2>
36			Double_t mithep::MathUtils::DeltaR(const V1 &v1, const V2 &v2)
37			{
38
39			return mithep::MathUtils::DeltaR(v1.Phi(),v1.Eta(),v2.Phi(),v2.Eta());
40
41			}
42
43	sixie	1.1	#endif