Example macro to get environment variables (Marian)

[u/mrichter/AliRoot.git] / STEER / AliMagFMaps.cxx

diff --git a/STEER/AliMagFMaps.cxx b/STEER/AliMagFMaps.cxx
index aa2d7bf369d89d85fa08a541e348002ea9e00e6f..5ac11cb50787febb5d002e3beb2c4d2ab9dc42a6 100644 (file)
--- a/STEER/AliMagFMaps.cxx
+++ b/STEER/AliMagFMaps.cxx
@@ -93,7 +93,6 @@ AliMagFMaps::~AliMagFMaps()
   delete fFieldMap[0];
   delete fFieldMap[1];
   delete fFieldMap[2];    
-  fgReadField = kTRUE;
 }
 
 //_______________________________________________________________________
@@ -103,10 +102,12 @@ void AliMagFMaps::ReadField()
   //
   //  don't read twice
   //
-    if (!fgReadField) return;
-    fgReadField = 0;
+    if (!fReadField) return;
+    fReadField = kFALSE;
   //    
-  char* fname;
+   
+
+  char* fname = 0;
   TFile* file = 0;
   if (fMap == k2kG) {
       fSolenoid = 2.;
@@ -115,17 +116,19 @@ void AliMagFMaps::ReadField()
       fFieldMap[0] = dynamic_cast<AliFieldMap*>(file->Get("L3B02"));
       file->Close();
       delete file;
+      delete [] fname; // see documentation to expand filenam
       fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/DipB02.root");
       file = new TFile(fname);
       fFieldMap[1] = dynamic_cast<AliFieldMap*>(file->Get("DipB02"));
       file->Close();
       delete file;;
-      
+      delete [] fname;
       fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/ExtB02.root");
       file = new TFile(fname);
       fFieldMap[2] = dynamic_cast<AliFieldMap*>(file->Get("ExtB02"));
       file->Close();
       delete file;
+      delete [] fname;
   } else if (fMap == k4kG) {
       fSolenoid = 4.;
       fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/L3B04.root");
@@ -133,16 +136,19 @@ void AliMagFMaps::ReadField()
       fFieldMap[0] = dynamic_cast<AliFieldMap*>(file->Get("L3B04"));
       file->Close();
       delete file;
+      delete [] fname;
       fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/DipB04.root");
       file = new TFile(fname);
       fFieldMap[1] = dynamic_cast<AliFieldMap*>(file->Get("DipB04"));
       file->Close();
+      delete [] fname;
       delete file;
       
       fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/ExtB04.root");
       file = new TFile(fname);
       fFieldMap[2] = dynamic_cast<AliFieldMap*>(file->Get("ExtB04"));
       file->Close();
+      delete [] fname;
       delete file;
   } else if (fMap == k5kG) {
       fSolenoid = 5.;
@@ -150,18 +156,20 @@ void AliMagFMaps::ReadField()
       file = new TFile(fname);
       fFieldMap[0] = dynamic_cast<AliFieldMap*>(file->Get("L3B05"));
       file->Close();
-      delete file;
+      delete file;      
+      delete [] fname;
       fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/DipB05.root");
       file = new TFile(fname);
       fFieldMap[1] = dynamic_cast<AliFieldMap*>(file->Get("DipB05"));
       file->Close();
       delete file;
-      
+      delete [] fname;
       fname = gSystem->ExpandPathName("$(ALICE_ROOT)/data/maps/ExtB05.root");
       file = new TFile(fname);
       fFieldMap[2] = dynamic_cast<AliFieldMap*>(file->Get("ExtB05"));
       file->Close();
       delete file;
+      delete [] fname;
   }
 
   if (!fL3Option) fSolenoidUser = fSolenoid;
@@ -221,21 +229,19 @@ void AliMagFMaps::Field(Float_t *x, Float_t *b) const
   }
   
   if(map){
-    map->Field(xm,b);
-    b[0] = - b[0];
-    b[2] = - b[2];
-
+      map->Field(xm,b);
+      b[0] = - b[0];
+      b[2] = - b[2];
+      
+      if(fFactor!=1) {
+         b[0]*=fFactor;
+         b[1]*=fFactor;
+         b[2]*=fFactor;
+      }
   } else {
       //This is the ZDC part
       ZDCField(x, b);
   }
-
-  
-  if(fFactor!=1) {
-      b[0]*=fFactor;
-      b[1]*=fFactor;
-      b[2]*=fFactor;
-  }
 }
 
 //_______________________________________________________________________
@@ -252,9 +258,11 @@ void AliMagFMaps::Streamer(TBuffer &R__b)
 {
   // Stream an object of class AliMagFMaps.
   if (R__b.IsReading()) {
-    AliMagFMaps::Class()->ReadBuffer(R__b, this);
-    ReadField();
+   R__b.ReadClassBuffer(AliMagFMaps::Class(), this);
+   // 
+   fReadField = kTRUE;
+   ReadField();
   } else {
-    AliMagFMaps::Class()->WriteBuffer(R__b, this);
+    R__b.WriteClassBuffer(AliMagFMaps::Class(), this);
   }
 }