ENH: Added utility functions to polyBoundaryMesh

src/OpenFOAM/meshes/polyMesh/polyBoundaryMesh/polyBoundaryMesh.C

@@ -612,6 +612,28 @@ Foam::wordList Foam::polyBoundaryMesh::physicalTypes() const
 }
 
 
+Foam::labelList Foam::polyBoundaryMesh::patchStarts() const
+{
+    return
+        getMethodImpl<labelList>
+        (
+            *this,
+            [](const polyPatch& p) { return p.start(); }
+        );
+}
+
+
+Foam::labelList Foam::polyBoundaryMesh::patchSizes() const
+{
+    return
+        getMethodImpl<labelList>
+        (
+            *this,
+            [](const polyPatch& p) { return p.size(); }
+        );
+}
+
+
 Foam::label Foam::polyBoundaryMesh::start() const
 {
     return mesh_.nInternalFaces();

src/OpenFOAM/meshes/polyMesh/polyBoundaryMesh/polyBoundaryMesh.H

@@ -167,6 +167,12 @@ public:
         //- Return a list of physical types
         wordList physicalTypes() const;
 
+        //- Return a list of patch start face indices
+        labelList patchStarts() const;
+
+        //- Return a list of patch sizes
+        labelList patchSizes() const;
+
         //- The start label of the boundary faces in the polyMesh face list
         //  Same as mesh.nInternalFaces()
         label start() const;