Add method to transparently get SPD vertex (Diego)

[u/mrichter/AliRoot.git] / ZDC / AliZDCMisAligner.cxx

diff --git a/ZDC/AliZDCMisAligner.cxx b/ZDC/AliZDCMisAligner.cxx
index 921a4fb1b9d5a9f17916dbc034ee76ed792510c1..c097c7ad03cf8b4d3a1af911298c68e5cf76974f 100644 (file)
--- a/ZDC/AliZDCMisAligner.cxx
+++ b/ZDC/AliZDCMisAligner.cxx
@@ -1,3 +1,29 @@
+/**************************************************************************
+ * Copyright(c) 2007-2010, 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.                  *
+ **************************************************************************/
+
+//========================================================================
+//
+// This class generates misalignment for ZDC. In particular it defines
+// the misalignment in the three canonical scenarios: "ideal", "residual"
+// and "full".
+// It is meant to be run standalone or from the steering macro
+// $ALICE_ROOT/macros/MakeAlignmentObjs.C
+// looping on the detectors.
+//
+//========================================================================
+
 #include "AliZDCMisAligner.h"
 #include "AliGeomManager.h"
 #include "TClonesArray.h"
@@ -6,60 +32,69 @@
 
 ClassImp(AliZDCMisAligner)
 
-//_______________________________________________________________________________________
+    //_______________________________________________________________________________________
 AliZDCMisAligner::AliZDCMisAligner() : AliMisAligner()
 {
-  Printf("asdfasdfasdfasdf\n\n");
-
+    //
+    // dummy constructor
+    //
 }
 
 //_______________________________________________________________________________________
 TClonesArray* AliZDCMisAligner::MakeAlObjsArray() {
+    // builds and returns the array of alignment objects
+    // according to the spcified misalignment scenario
+    // ("ideal", "residual" or "full").
+    //
+    TClonesArray *array = new TClonesArray("AliAlignObjParams",10);
+    TClonesArray &alobj = *array;
 
-  TClonesArray *array = new TClonesArray("AliAlignObjParams",10);
-  TClonesArray &alobj = *array;
-
-  Double_t dx,dy,dz,dpsi,dtheta,dphi;
-  if(TString(GetMisalType())=="ideal")
-  {
-    dx=0., dy=0., dz=0.;
-    dpsi=0., dtheta=0., dphi=0.;
-  }else if(TString(GetMisalType())=="residual" || TString(GetMisalType())=="full")
-  {
-    dx=0., dy=0.05, dz=0.;
-    dpsi=0., dtheta=0., dphi=0.;
-  }else{
-    AliError(Form("\"%s\" is not a valid identifier for misalignment types. Exiting ...",GetMisalType()));
-    return 0;
-  }
+    Double_t dx,dy,dz,dpsi,dtheta,dphi;
+    if(TString(GetMisalType())=="ideal")
+    {
+       dx=0., dy=0., dz=0.;
+       dpsi=0., dtheta=0., dphi=0.;
+    }else if(TString(GetMisalType())=="residual" || TString(GetMisalType())=="full")
+    {
+       dx=0., dy=0.05, dz=0.;
+       dpsi=0., dtheta=0., dphi=0.;
+    }else{
+       AliError(Form("\"%s\" is not a valid identifier for misalignment types. Exiting ...",GetMisalType()));
+       return 0;
+    }
 
-  const char *ZDCCn="ZDC/NeutronZDC_C";
-  const char *ZDCCp="ZDC/ProtonZDC_C";
-  const char *ZDCAn="ZDC/NeutronZDC_A";
-  const char *ZDCAp="ZDC/ProtonZDC_A";
+    const char *zdcCn="ZDC/NeutronZDC_C";
+    const char *zdcCp="ZDC/ProtonZDC_C";
+    const char *zdcAn="ZDC/NeutronZDC_A";
+    const char *zdcAp="ZDC/ProtonZDC_A";
 
-  UShort_t iIndex=0;
-  AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
-  UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,iIndex);
+    UShort_t iIndex=0;
+    AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
+    UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,iIndex);
 
-  new(alobj[0]) AliAlignObjParams(ZDCCn, volid, dx, dy, dz, dpsi, dtheta, dphi, kTRUE);
-  new(alobj[1]) AliAlignObjParams(ZDCCp, volid, dx, dy, dz, dpsi, dtheta, dphi, kTRUE);
-  new(alobj[2]) AliAlignObjParams(ZDCAn, volid, dx, dy, dz, dpsi, dtheta, dphi, kTRUE);
-  new(alobj[3]) AliAlignObjParams(ZDCAp, volid, dx, dy, dz, dpsi, dtheta, dphi, kTRUE);
+    new(alobj[0]) AliAlignObjParams(zdcCn, volid, dx, dy, dz, dpsi, dtheta, dphi, kTRUE);
+    new(alobj[1]) AliAlignObjParams(zdcCp, volid, dx, dy, dz, dpsi, dtheta, dphi, kTRUE);
+    new(alobj[2]) AliAlignObjParams(zdcAn, volid, dx, dy, dz, dpsi, dtheta, dphi, kTRUE);
+    new(alobj[3]) AliAlignObjParams(zdcAp, volid, dx, dy, dz, dpsi, dtheta, dphi, kTRUE);
 
-  return array;
+    return array;
 }
 
 //_______________________________________________________________________________________
 AliCDBMetaData* AliZDCMisAligner::GetCDBMetaData() const {
-  AliCDBMetaData* md = new AliCDBMetaData();
-  md->SetResponsible("Chiara Oppedisano");
+    // Returns the comment and responsible for the
+    // AliCDBMetaData to be associated with the OCDB entry
+    // containing the ZDC array of misalignment objects
+    //
+    AliCDBMetaData* md = new AliCDBMetaData();
+    md->SetResponsible("Chiara Oppedisano");
+
+    if(TString(GetMisalType())=="ideal")
+       md->SetComment("Alignment objects for ZDC ideal misalignment");
+    if(TString(GetMisalType())=="residual")
+       md->SetComment("Alignment objects for ZDC residual misalignment");
+    if(TString(GetMisalType())=="full")
+       md->SetComment("Alignment objects for ZDC full misalignment");
 
-  if(TString(GetMisalType())=="ideal")
-    md->SetComment("Alignment objects for ZDC ideal misalignment");
-  if(TString(GetMisalType())=="residual")
-    md->SetComment("Alignment objects for ZDC residual misalignment");
-  if(TString(GetMisalType())=="full")
-    md->SetComment("Alignment objects for ZDC full misalignment");
-  return md;
+    return md;
 }