ENH: mapDistribute : added whichTransform to find transform from local index

src/OpenFOAM/meshes/polyMesh/mapPolyMesh/mapDistribute/mapDistribute.C

@@ -29,6 +29,7 @@ License
 #include "globalIndex.H"
 #include "globalIndexAndTransform.H"
 #include "transformField.H"
+#include "ListOps.H"
 
 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
@@ -1104,6 +1105,12 @@ Foam::mapDistribute::mapDistribute(const Xfer<mapDistribute>& map)
 
 // * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * * //
 
+Foam::label Foam::mapDistribute::whichTransform(const label index) const
+{
+    return findLower(transformStart_, index+1);
+}
+
+
 void Foam::mapDistribute::transfer(mapDistribute& rhs)
 {
     constructSize_ = rhs.constructSize_;

src/OpenFOAM/meshes/polyMesh/mapPolyMesh/mapDistribute/mapDistribute.H

@@ -385,6 +385,9 @@ public:
                 return transformStart_;
             }
 
+            //- Find transform from transformElements
+            label whichTransform(const label index) const;
+
             //- Calculate a schedule. See above.
             static List<labelPair> schedule
             (