ENH: regionSizeDistrubtion: optional coordinateSystem for vectorFields

src/postProcessing/functionObjects/field/regionSizeDistribution/regionSizeDistribution.C

@@ -368,6 +368,14 @@ void Foam::regionSizeDistribution::read(const dictionary& dict)
 
         word format(dict.lookup("setFormat"));
         formatterPtr_ = writer<scalar>::New(format);
+
+        if (dict.found("coordinateSystem"))
+        {
+            coordSysPtr_.reset(new coordinateSystem(obr_, dict));
+
+            Info<< "Transforming all vectorFields with coordinate system "
+                << coordSysPtr_().name() << endl;
+        }
     }
 }
 
@@ -797,11 +805,21 @@ void Foam::regionSizeDistribution::write()
                     const word& fldName = vectorNames[selected[i]];
                     Info<< "Vector field " << fldName << endl;
 
-                    const vectorField& fld = obr_.lookupObject
+                    vectorField fld = obr_.lookupObject
                     <
                         volVectorField
                     >(fldName).internalField();
 
+                    if (coordSysPtr_.valid())
+                    {
+                        Info<< "Transforming vector field " << fldName
+                            << " with coordinate system "
+                            << coordSysPtr_().name()
+                            << endl;
+
+                        fld = coordSysPtr_().localVector(fld);
+                    }
+
 
                     // Components
 

src/postProcessing/functionObjects/field/regionSizeDistribution/regionSizeDistribution.H

@@ -69,6 +69,13 @@ Description
         maxDiameter     0.5e-4;
         minDiameter     0;
         setFormat       gnuplot;
+        coordinateSystem
+        {
+            type            cartesian;
+            origin          (0 0 0);
+            e3              (0 1 1);
+            e1              (1 0 0);
+        }
     }
     \endverbatim
 
@@ -84,6 +91,7 @@ Description
         maxDiameter  | maximum region equivalent diameter | yes |
         minDiameter  | minimum region equivalent diameter | no  | 0
         setFormat    | writing format          | yes         |
+        coordinateSystem | transformation for vector fields | no         |
     \endtable
 
 SeeAlso
@@ -104,6 +112,7 @@ SourceFiles
 #include "Map.H"
 #include "volFieldsFwd.H"
 #include "wordReList.H"
+#include "coordinateSystem.H"
 
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
@@ -159,6 +168,9 @@ class regionSizeDistribution
         //- Output formatter to write
         autoPtr<writer<scalar> > formatterPtr_;
 
+        //- Optional coordinate system
+        autoPtr<coordinateSystem> coordSysPtr_;
+
 
     // Private Member Functions