Test for Coverity

[u/mrichter/AliRoot.git] / TPC / AliTPCExBBShape.h

diff --git a/TPC/AliTPCExBBShape.h b/TPC/AliTPCExBBShape.h
index 9f8ed02637598336bd324d0ed8bdd21f4554a147..fde0c6da41a9c2fdb165dfa9b12d9bfecc142601 100644 (file)
--- a/TPC/AliTPCExBBShape.h
+++ b/TPC/AliTPCExBBShape.h
@@ -1,20 +1,38 @@
-#ifndef ALI_TPC_EXB_B_SHAPE_H
-#define ALI_TPC_EXB_B_SHAPE_H
+#ifndef ALI_TPC_EX_BB_SHAPE_H
+#define ALI_TPC_EX_BB_SHAPE_H
 
 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
  * See cxx source for full Copyright notice                               */
 
-////////////////////////////////////////////////////////////////////////////
-//                                                                        //
-// AliExBBShape class                                                     //
-// The class calculates the space point distortions due to the B field    //
-// shape imperfections using a second order technique based on integrals  //
-// over Bz (e.g. int By/Bz) obtained via the AliMagF class                //
-// The class allows "effective Omega Tau" corrections.                    //
-//                                                                        //
-// date: 27/04/2010                                                       //
-// Authors: Magnus Mager, Jim Thomas, Stefan Rossegger                    //
-////////////////////////////////////////////////////////////////////////////
+// _________________________________________________________________
+//
+// Begin_Html
+//   <h2>AliExBBShape class </h2>                                                    
+//   The class calculates the space point distortions due to the B field    
+//   shape imperfections using a second order technique based on integrals  
+//   over Bz (e.g. int By/Bz) obtained via the AliMagF class. The essential 
+//   input for this class is the magnetic field maps which can be set via the function SetBField.  
+//   <p>
+//   The class allows "effective Omega Tau" corrections.                    
+//   End_Html
+//   Begin_Macro(source)
+//   {
+//   gROOT->SetStyle("Plain"); gStyle->SetPalette(1);
+//   TCanvas *c2 = new TCanvas("cAliTPCExBBShape","cAliTPCExBBShape",500,300); 
+//   AliTPCExBBShape exb;                                                 
+//   AliMagF mag("mag","mag");        // 0.5 Tesla (solenoid)
+//   exb.SetBField(&mag);             // use Bfield from AliMagF        
+//   exb.SetOmegaTauT1T2(-0.32,1.,1.); // values ideally from OCDB     
+//   exb.CreateHistoDRPhiinZR(0,100,100)->Draw("surf2"); 
+//   return c2;
+//   } 
+// End_Macro
+// Begin_Html
+//   <p>
+//   Date: 27/04/2010 <br>                                                      
+//   Authors: Magnus Mager, Jim Thomas, Stefan Rossegger                    
+// End_Html 
+// _________________________________________________________________
 
 #include "AliTPCCorrection.h"
 
@@ -25,36 +43,40 @@ public:
   AliTPCExBBShape();
   virtual ~AliTPCExBBShape();
 
+ // initialization and update functions
+  virtual void Init();
+  virtual void Update(const TTimeStamp &timeStamp);
+
   // common setters and getters for ExB
   virtual void SetOmegaTauT1T2(Float_t omegaTau,Float_t t1,Float_t t2) {
-    const Float_t wt1=t1*omegaTau;
-    fC1=wt1/(1.+wt1*wt1);
-    const Float_t wt2=t2*omegaTau;
-    fC2=wt2*wt2/(1.+wt2*wt2);
+    fT1=t1; fT2=t2;
+    const Float_t wt1=t1*omegaTau;    fC1=wt1/(1.+wt1*wt1);
+    const Float_t wt2=t2*omegaTau;    fC2=wt2*wt2/(1.+wt2*wt2);
   };
   void SetC1C2(Float_t c1,Float_t c2) {fC1=c1;fC2=c2;} // CAUTION: USE WITH CARE
   Float_t GetC1() const {return fC1;}
   Float_t GetC2() const {return fC2;}
 
   // setters and getters for the magentic field map
-  void SetBField(AliMagF *bField) {fBField=bField;}
+  void SetBField(const AliMagF *bField) {fBField=(AliMagF*)bField;}
   AliMagF* GetBField() const {return fBField;}
 
   virtual void GetCorrection(const Float_t x[],const Short_t roc,Float_t dx[]);
   void GetBxAndByOverBz(const Float_t x[],const Short_t roc,Float_t BxByOverBz[]);
 
   virtual void Print(Option_t* option="") const;
+  static Double_t GetBFieldXYZ(Double_t gx, Double_t gy, Double_t gz, Int_t axisType);
 
 private:
   Float_t fC1; // coefficient C1          (compare Jim Thomas's notes for definitions)
   Float_t fC2; // coefficient C2          (compare Jim Thomas's notes for definitions)
 
-  AliMagF *fBField;
+  AliMagF *fBField;       // pointer to magnetic field
 
-  AliTPCExBBShape & operator =(const AliTPCExBBShape);
+  AliTPCExBBShape & operator =(const AliTPCExBBShape &); // dummy assignment operator
   AliTPCExBBShape(const AliTPCExBBShape&); //dummy copy contructor
 
-  ClassDef(AliTPCExBBShape,1);
+  ClassDef(AliTPCExBBShape,2);
 };
 
 #endif