08-mar-2003 NvE Compiler option /GR introduced for MSVC++ in mklibs.bat to explicitly...

[u/mrichter/AliRoot.git] / RALICE / AliPosition.cxx

diff --git a/RALICE/AliPosition.cxx b/RALICE/AliPosition.cxx
index 5f41ac27c412e18d00e77a99a02c3cf3069d27fb..6286171c75cfc0070b0dac1a78919910ace41bba 100644 (file)
--- a/RALICE/AliPosition.cxx
+++ b/RALICE/AliPosition.cxx
@@ -1,4 +1,60 @@
+/**************************************************************************
+ * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
+ *                                                                        *
+ * Author: The ALICE Off-line Project.                                    *
+ * Contributors are mentioned in the code where appropriate.              *
+ *                                                                        *
+ * Permission to use, copy, modify and distribute this software and its   *
+ * documentation strictly for non-commercial purposes is hereby granted   *
+ * without fee, provided that the above copyright notice appears in all   *
+ * copies and that both the copyright notice and this permission notice   *
+ * appear in the supporting documentation. The authors make no claims     *
+ * about the suitability of this software for any purpose. It is          *
+ * provided "as is" without express or implied warranty.                  *
+ **************************************************************************/
+
+// $Id$
+
+///////////////////////////////////////////////////////////////////////////
+// Class AliPosition
+// Handling of positions in various reference frames.
+//
+// This class is meant to serve as a base class for ALICE objects
+// that have a unique position in 3-dimensional space.
+//
+// Note :
+// ------
+// Positions (r), errors (e) and reference frames (f) are specified via
+//
+//    SetPosition(Float_t* r,TString f)
+//    SetPositionErrors(Float_t* e,TString f)
+//
+// under the following conventions :
+//
+// f="car" ==> r in Cartesian coordinates   (x,y,z)
+// f="sph" ==> r in Spherical coordinates   (r,theta,phi)
+// f="cyl" ==> r in Cylindrical coordinates (rho,phi,z)
+//
+// All angles are in radians.
+//
+// Example :
+// ---------
+//
+// AliPosition q;
+// Float_t pos[3]={-1,25,7};
+// Float_t err[3]={0.08,1.85,0.5};
+// q.SetPosition(pos,"car");
+// q.SetPositionErrors(pos,"car");
+// Float_t loc[3],dloc[3];
+// q.GetPosition(loc,"sph");
+// q.GetPositionErrors(dloc,"sph");
+//
+//--- Author: Nick van Eijndhoven 06-feb-1999 UU-SAP Utrecht
+//- Modified: NvE $Date$ UU-SAP Utrecht
+///////////////////////////////////////////////////////////////////////////
+
 #include "AliPosition.h"
+#include "Riostream.h"
  
 ClassImp(AliPosition) // Class implementation to enable ROOT I/O
  
@@ -12,6 +68,11 @@ AliPosition::~AliPosition()
 // Destructor to delete dynamically allocated memory
 }
 ///////////////////////////////////////////////////////////////////////////
+AliPosition::AliPosition(const AliPosition& p) : Ali3Vector(p)
+{
+// Copy constructor
+}
+///////////////////////////////////////////////////////////////////////////
 void AliPosition::SetPosition(Double_t* r,TString f)
 {
 // Store position according to reference frame f
@@ -48,5 +109,42 @@ void AliPosition::SetPosition(Ali3Vector& r)
  Double_t a[3];
  r.GetVector(a,"sph");
  SetVector(a,"sph");
+ r.GetErrors(a,"car");
+ SetErrors(a,"car");
+}
+///////////////////////////////////////////////////////////////////////////
+void AliPosition::SetPositionErrors(Double_t* r,TString f)
+{
+// Store position errors according to reference frame f
+ SetErrors(r,f);
+}
+///////////////////////////////////////////////////////////////////////////
+void AliPosition::GetPositionErrors(Double_t* r,TString f)
+{
+// Provide position errors according to reference frame f
+ GetErrors(r,f);
+}
+///////////////////////////////////////////////////////////////////////////
+void AliPosition::SetPositionErrors(Float_t* r,TString f)
+{
+// Store position errors according to reference frame f
+ SetErrors(r,f);
+}
+///////////////////////////////////////////////////////////////////////////
+void AliPosition::GetPositionErrors(Float_t* r,TString f)
+{
+// Provide position errors according to reference frame f
+ GetErrors(r,f);
+}
+///////////////////////////////////////////////////////////////////////////
+Double_t AliPosition::GetDistance(AliPosition& p)
+{
+// Provide distance to position p.
+// The error on the result can be obtained as usual by invoking
+// GetResultError() afterwards. 
+ Ali3Vector d=(Ali3Vector)((*this)-p);
+ Double_t dist=d.GetNorm();
+ fDresult=d.GetResultError();
+ return dist;
 }
 ///////////////////////////////////////////////////////////////////////////