ENH: splitMeshRegions now fills in coupling information in directMapped patch.

- added directMapped*Patch constructors with uniform offset
- changed splitMeshRegions to use it
- adapted chtMultiRegionFoam tutorials

src/meshTools/directMapped/directMappedPolyPatch/directMappedPatchBase.C

@@ -623,6 +623,27 @@ Foam::directMappedPatchBase::directMappedPatchBase
 {}
 
 
+Foam::directMappedPatchBase::directMappedPatchBase
+(
+    const polyPatch& pp,
+    const word& sampleRegion,
+    const sampleMode mode,
+    const word& samplePatch,
+    const vector& offset
+)
+:
+    patch_(pp),
+    sampleRegion_(sampleRegion),
+    mode_(mode),
+    samplePatch_(samplePatch),
+    uniformOffset_(true),
+    offset_(offset),
+    offsets_(0),
+    sameRegion_(sampleRegion_ == patch_.boundaryMesh().mesh().name()),
+    mapPtr_(NULL)
+{}
+
+
 Foam::directMappedPatchBase::directMappedPatchBase
 (
     const polyPatch& pp,

src/meshTools/directMapped/directMappedPolyPatch/directMappedPatchBase.H

@@ -157,6 +157,16 @@ public:
             const vectorField& offset
         );
 
+        //- Construct from components
+        directMappedPatchBase
+        (
+            const polyPatch& pp,
+            const word& sampleRegion,
+            const sampleMode sampleMode,
+            const word& samplePatch,
+            const vector& offset
+        );
+
         //- Construct from dictionary
         directMappedPatchBase(const polyPatch&, const dictionary&);
 

src/meshTools/directMapped/directMappedPolyPatch/directMappedPolyPatch.C

@@ -82,6 +82,31 @@ Foam::directMappedPolyPatch::directMappedPolyPatch
 {}
 
 
+Foam::directMappedPolyPatch::directMappedPolyPatch
+(
+    const word& name,
+    const label size,
+    const label start,
+    const label index,
+    const word& sampleRegion,
+    const directMappedPatchBase::sampleMode mode,
+    const word& samplePatch,
+    const vector& offset,
+    const polyBoundaryMesh& bm
+)
+:
+    polyPatch(name, size, start, index, bm),
+    directMappedPatchBase
+    (
+        static_cast<const polyPatch&>(*this),
+        sampleRegion,
+        mode,
+        samplePatch,
+        offset
+    )
+{}
+
+
 Foam::directMappedPolyPatch::directMappedPolyPatch
 (
     const word& name,

src/meshTools/directMapped/directMappedPolyPatch/directMappedPolyPatch.H

@@ -115,6 +115,20 @@ public:
             const polyBoundaryMesh& bm
         );
 
+        //- Construct from components. Uniform offset.
+        directMappedPolyPatch
+        (
+            const word& name,
+            const label size,
+            const label start,
+            const label index,
+            const word& sampleRegion,
+            const directMappedPatchBase::sampleMode mode,
+            const word& samplePatch,
+            const vector& offset,
+            const polyBoundaryMesh& bm
+        );
+
         //- Construct from dictionary
         directMappedPolyPatch
         (

src/meshTools/directMapped/directMappedPolyPatch/directMappedWallPolyPatch.C

@@ -87,6 +87,31 @@ Foam::directMappedWallPolyPatch::directMappedWallPolyPatch
 {}
 
 
+Foam::directMappedWallPolyPatch::directMappedWallPolyPatch
+(
+    const word& name,
+    const label size,
+    const label start,
+    const label index,
+    const word& sampleRegion,
+    const directMappedPatchBase::sampleMode mode,
+    const word& samplePatch,
+    const vector& offset,
+    const polyBoundaryMesh& bm
+)
+:
+    wallPolyPatch(name, size, start, index, bm),
+    directMappedPatchBase
+    (
+        static_cast<const polyPatch&>(*this),
+        sampleRegion,
+        mode,
+        samplePatch,
+        offset
+    )
+{}
+
+
 Foam::directMappedWallPolyPatch::directMappedWallPolyPatch
 (
     const word& name,

src/meshTools/directMapped/directMappedPolyPatch/directMappedWallPolyPatch.H

@@ -115,6 +115,20 @@ public:
             const polyBoundaryMesh& bm
         );
 
+        //- Construct from components. Uniform offset.
+        directMappedWallPolyPatch
+        (
+            const word& name,
+            const label size,
+            const label start,
+            const label index,
+            const word& sampleRegion,
+            const directMappedPatchBase::sampleMode mode,
+            const word& samplePatch,
+            const vector& offset,
+            const polyBoundaryMesh& bm
+        );
+
         //- Construct from dictionary
         directMappedWallPolyPatch
         (