/* $Id$ */
-///////////////////////////////////////////////////////////////////////////
-// Class Ali3Vector
-// Handling of 3-vectors in various reference frames.
-//
-// This class is meant to serve as a base class for ALICE objects
-// that have 3-dimensional vector characteristics.
-//
-// Note :
-// ------
-// Vectors (v) and reference frames (f) are specified via
-// SetVector(Float_t* v,TString f) under the following conventions :
-//
-// f="car" ==> v in Cartesian coordinates (x,y,z)
-// f="sph" ==> v in Spherical coordinates (r,theta,phi)
-// f="cyl" ==> v in Cylindrical coordinates (rho,phi,z)
-//
-// All angles are in radians.
-//
-// Example :
-// ---------
-//
-// Ali3Vector a;
-// Float_t v[3]={-1,25,7};
-// a.SetVector(v,"car");
-// a.Info();
-//
-// Float_t vec[3];
-// a.GetVector(vec,"sph");
-//
-// Ali3Vector b;
-// Float_t v2[3]={6,-18,33};
-// b.SetVector(v2,"car");
-//
-// Float_t dotpro=a.Dot(b);
-//
-// Ali3Vector c=a.Cross(b);
-// c.Info("sph");
-// c.GetVector(vec,"cyl");
-// Float_t norm=c.GetNorm();
-// c=a+b;
-// c=a-b;
-// c=a*5;
-//
-//--- NvE 30-mar-1999 UU-SAP Utrecht
-///////////////////////////////////////////////////////////////////////////
-
#include <iostream.h>
#include <math.h>
virtual void GetVector(Double_t* v,TString f); // Provide vector v in frame f
virtual void SetVector(Float_t* v,TString f); // Store vector v in frame f
virtual void GetVector(Float_t* v,TString f); // Provide vector v in frame f
+ virtual void SetErrors(Double_t* e,TString f); // Store errors of vector in frame f
+ virtual void GetErrors(Double_t* e,TString f); // Provide errors of vector in frame f
+ virtual void SetErrors(Float_t* e,TString f); // Store errors of vector in frame f
+ virtual void GetErrors(Float_t* e,TString f); // Provide errors of vector in frame f
virtual void Info(TString f="car"); // Print vector components in frame f
Double_t GetNorm(); // Provide norm of the vector
Double_t Dot(Ali3Vector& q); // Provide dot product with q
+ Double_t GetPseudoRapidity(); // Provide the pseudorapidity w.r.t z-axis
+ Double_t GetResultError(); // Provide error on scalar result (e.g. norm)
Ali3Vector Cross(Ali3Vector& q); // Provide cross product with q
Ali3Vector operator+(Ali3Vector& q); // Add vector q
Ali3Vector operator-(Ali3Vector& q); // Subtract vector q
Ali3Vector& operator/=(Double_t s); // Divide by scalar s
protected:
- Double_t fV,fTheta,fPhi; // Vector in spherical coordinates
+ Double_t fV,fTheta,fPhi; // Vector in spherical coordinates
+ Double_t fDx,fDy,fDz; // Errors on Cartesian coordinates
+ Double_t fDresult; // Error on scalar result (e.g. norm or dotproduct)
- ClassDef(Ali3Vector,1) // Class definition to enable ROOT I/O
+ ClassDef(Ali3Vector,1) // Handling of 3-vectors in various reference frames.
};
#endif