From 3bc8ab2839abe06d6ec646903ade1f23c72ad06b Mon Sep 17 00:00:00 2001
From: Mark Olesen <Mark.Olesen@esi-group.com>
Date: Mon, 10 May 2021 13:38:02 +0200
Subject: [PATCH] ENH: improve PrimitivePatch access for edges

- return internalEdges() and boundaryEdges() sub lists directly

- calculate and return boundaryFaces() to identify faces attached to
  boundary edges.

- minor code cleanup, and add PrimitivePatchBase class for
  non-templated code.

STYLE: mark unused parameter in globalMeshData mergePoints
---
 .../test/primitivePatch/Test-PrimitivePatch.C |  25 +++-
 src/OpenFOAM/Make/files                       |   2 +-
 .../polyMesh/globalMeshData/globalMeshData.C  |   2 +-
 .../polyMesh/globalMeshData/globalMeshData.H  |  20 +--
 .../PrimitivePatch/PrimitivePatch.C           |  39 ++++--
 .../PrimitivePatch/PrimitivePatch.H           |  51 ++++---
 .../PrimitivePatch/PrimitivePatchAddressing.C |  37 ++---
 ...mitivePatchName.C => PrimitivePatchBase.C} |   5 +-
 .../PrimitivePatch/PrimitivePatchBase.H       |  72 ++++++++++
 .../PrimitivePatch/PrimitivePatchBdryFaces.C  |  53 ++++++++
 .../PrimitivePatch/PrimitivePatchBdryPoints.C |  14 +-
 .../PrimitivePatch/PrimitivePatchEdgeLoops.C  |  16 +--
 .../PrimitivePatchLocalPointOrder.C           |  16 +--
 .../PrimitivePatch/PrimitivePatchMeshData.C   | 128 +++---------------
 .../PrimitivePatch/PrimitivePatchMeshEdges.C  |  77 +++++------
 .../PrimitivePatchPointAddressing.C           |  10 +-
 .../PrimitivePatchProjectPoints.C             |  51 +++----
 17 files changed, 322 insertions(+), 296 deletions(-)
 rename src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/{PrimitivePatchName.C => PrimitivePatchBase.C} (92%)
 create mode 100644 src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchBase.H
 create mode 100644 src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchBdryFaces.C

diff --git a/applications/test/primitivePatch/Test-PrimitivePatch.C b/applications/test/primitivePatch/Test-PrimitivePatch.C
index a74deb4bdf..e53f81b409 100644
--- a/applications/test/primitivePatch/Test-PrimitivePatch.C
+++ b/applications/test/primitivePatch/Test-PrimitivePatch.C
@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2016 OpenFOAM Foundation
-    Copyright (C) 2020 OpenCFD Ltd.
+    Copyright (C) 2020-2021 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -34,6 +34,7 @@ Description
 #include "polyMesh.H"
 #include "primitiveFacePatch.H"
 #include "primitivePatch.H"
+#include "IndirectList.H"
 #include "Fstream.H"
 
 using namespace Foam;
@@ -242,6 +243,28 @@ int main(int argc, char *argv[])
         writeEdgeFaces(localPoints, localFaces, edges, edgeFaces);
 
         writeFaceFaces(localPoints, localFaces, faceFaces);
+
+        const labelList bndFaceIds(pp.boundaryFaces());
+
+        Info<< "Have: " << bndFaceIds.size() << " boundary faces" << nl;
+
+        // Can calculate by hand
+        if (!pp.hasFaceCentres())
+        {
+            pointField boundaryCentres(bndFaceIds.size());
+
+            forAll(bndFaceIds, facei)
+            {
+                boundaryCentres[facei] =
+                    pp[bndFaceIds[facei]].centre(pp.points());
+            }
+            Info << "calc faceCentres:"
+                << boundaryCentres << nl;
+        }
+
+        // But will often use the cached information
+        Info<< "faceCentres:"
+            << UIndirectList<point>(pp.faceCentres(), bndFaceIds) << nl;
     }
 
     // Move construct
diff --git a/src/OpenFOAM/Make/files b/src/OpenFOAM/Make/files
index 4ca6562acf..e7b0357b08 100644
--- a/src/OpenFOAM/Make/files
+++ b/src/OpenFOAM/Make/files
@@ -655,7 +655,7 @@ $(mapPolyMesh)/mapDistribute/IOmapDistribute.C
 $(mapPolyMesh)/mapAddedPolyMesh.C
 
 PrimitivePatch = $(primitiveMesh)/PrimitivePatch
-$(PrimitivePatch)/PrimitivePatchName.C
+$(PrimitivePatch)/PrimitivePatchBase.C
 
 pointMesh = meshes/pointMesh
 $(pointMesh)/pointMesh.C
diff --git a/src/OpenFOAM/meshes/polyMesh/globalMeshData/globalMeshData.C b/src/OpenFOAM/meshes/polyMesh/globalMeshData/globalMeshData.C
index 3b98b0c996..9ff449fde5 100644
--- a/src/OpenFOAM/meshes/polyMesh/globalMeshData/globalMeshData.C
+++ b/src/OpenFOAM/meshes/polyMesh/globalMeshData/globalMeshData.C
@@ -2507,7 +2507,7 @@ Foam::autoPtr<Foam::globalIndex> Foam::globalMeshData::mergePoints
 Foam::autoPtr<Foam::globalIndex> Foam::globalMeshData::mergePoints
 (
     const labelList& meshPoints,
-    const Map<label>& meshPointMap,
+    const Map<label>& /* unused: meshPointMap */,
     labelList& pointToGlobal,
     labelList& uniqueMeshPoints
 ) const
diff --git a/src/OpenFOAM/meshes/polyMesh/globalMeshData/globalMeshData.H b/src/OpenFOAM/meshes/polyMesh/globalMeshData/globalMeshData.H
index 2b90e7504e..8a58b914aa 100644
--- a/src/OpenFOAM/meshes/polyMesh/globalMeshData/globalMeshData.H
+++ b/src/OpenFOAM/meshes/polyMesh/globalMeshData/globalMeshData.H
@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2016 OpenFOAM Foundation
-    Copyright (C) 2018-2020 OpenCFD Ltd.
+    Copyright (C) 2018-2021 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -342,7 +342,7 @@ public:
         // Access
 
             //- Return the mesh reference
-            const polyMesh& mesh() const
+            const polyMesh& mesh() const noexcept
             {
                 return mesh_;
             }
@@ -351,25 +351,25 @@ public:
             //  not running parallel)
             bool parallel() const
             {
-                return processorPatches_.size() > 0;
+                return !processorPatches_.empty();
             }
 
             //- Return total number of points in decomposed mesh. Not
             //  compensated for duplicate points!
-            label nTotalPoints() const
+            label nTotalPoints() const noexcept
             {
                 return nTotalPoints_;
             }
 
             //- Return total number of faces in decomposed mesh. Not
             //  compensated for duplicate faces!
-            label nTotalFaces() const
+            label nTotalFaces() const noexcept
             {
                 return nTotalFaces_;
             }
 
             //- Return total number of cells in decomposed mesh.
-            label nTotalCells() const
+            label nTotalCells() const noexcept
             {
                 return nTotalCells_;
             }
@@ -379,7 +379,7 @@ public:
 
             //- Return list of processor patch labels
             //  (size of list = number of processor patches)
-            const labelList& processorPatches() const
+            const labelList& processorPatches() const noexcept
             {
                 return processorPatches_;
             }
@@ -387,14 +387,14 @@ public:
             //- Return list of indices into processorPatches_ for each patch.
             //  Index = -1 for non-processor parches.
             //  (size of list = number of patches)
-            const labelList& processorPatchIndices() const
+            const labelList& processorPatchIndices() const noexcept
             {
                 return processorPatchIndices_;
             }
 
             //- Return processorPatchIndices of the neighbours
             //  processor patches. -1 if not running parallel.
-            const labelList& processorPatchNeighbours() const
+            const labelList& processorPatchNeighbours() const noexcept
             {
                 return processorPatchNeighbours_;
             }
@@ -577,7 +577,7 @@ public:
                 autoPtr<globalIndex> mergePoints
                 (
                     const labelList& meshPoints,
-                    const Map<label>& meshPointMap,
+                    const Map<label>& meshPointMap,  //!< currently unused
                     labelList& pointToGlobal,
                     labelList& uniqueMeshPoints
                 ) const;
diff --git a/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatch.C b/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatch.C
index d45ce84119..6c401211ad 100644
--- a/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatch.C
+++ b/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatch.C
@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2016 OpenFOAM Foundation
-    Copyright (C) 2020 OpenCFD Ltd.
+    Copyright (C) 2020-2021 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -130,7 +130,6 @@ Foam::PrimitivePatch<FaceList, PointField>::PrimitivePatch
     const PrimitivePatch<FaceList, PointField>& pp
 )
 :
-    PrimitivePatchName(),
     FaceList(pp),
     points_(pp.points_),
     edgesPtr_(nullptr),
@@ -173,13 +172,7 @@ Foam::PrimitivePatch<FaceList, PointField>::movePoints
     const Field<point_type>&
 )
 {
-    if (debug)
-    {
-        Pout<< "PrimitivePatch<FaceList, PointField>::"
-            << "movePoints() : "
-            << "recalculating PrimitivePatch geometry following mesh motion"
-            << endl;
-    }
+    DebugInFunction << "Recalculating geometry following mesh motion" << endl;
 
     clearGeom();
 }
@@ -198,6 +191,24 @@ Foam::PrimitivePatch<FaceList, PointField>::edges() const
 }
 
 
+template<class FaceList, class PointField>
+const Foam::edgeList::subList
+Foam::PrimitivePatch<FaceList, PointField>::internalEdges() const
+{
+    const edgeList& allEdges = this->edges();  // Force demand-driven
+    return edgeList::subList(allEdges, nInternalEdges());
+}
+
+
+template<class FaceList, class PointField>
+const Foam::edgeList::subList
+Foam::PrimitivePatch<FaceList, PointField>::boundaryEdges() const
+{
+    const edgeList& allEdges = this->edges();  // Force demand-driven
+    return edgeList::subList(allEdges, nBoundaryEdges(), nInternalEdges());
+}
+
+
 template<class FaceList, class PointField>
 Foam::label
 Foam::PrimitivePatch<FaceList, PointField>::nInternalEdges() const
@@ -211,6 +222,15 @@ Foam::PrimitivePatch<FaceList, PointField>::nInternalEdges() const
 }
 
 
+template<class FaceList, class PointField>
+Foam::label
+Foam::PrimitivePatch<FaceList, PointField>::nBoundaryEdges() const
+{
+    const edgeList& allEdges = this->edges();  // Force demand-driven
+    return (allEdges.size() - this->nInternalEdges());
+}
+
+
 template<class FaceList, class PointField>
 const Foam::labelList&
 Foam::PrimitivePatch<FaceList, PointField>::boundaryPoints() const
@@ -496,6 +516,7 @@ Foam::PrimitivePatch<FaceList, PointField>::operator=
 #include "PrimitivePatchAddressing.C"
 #include "PrimitivePatchEdgeLoops.C"
 #include "PrimitivePatchClear.C"
+#include "PrimitivePatchBdryFaces.C"
 #include "PrimitivePatchBdryPoints.C"
 #include "PrimitivePatchLocalPointOrder.C"
 #include "PrimitivePatchMeshData.C"
diff --git a/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatch.H b/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatch.H
index f2cdc95af5..e05ed53e46 100644
--- a/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatch.H
+++ b/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatch.H
@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2016 OpenFOAM Foundation
-    Copyright (C) 2016-2020 OpenCFD Ltd.
+    Copyright (C) 2016-2021 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -36,16 +36,16 @@ Description
     using List and pointField.
 
 SourceFiles
-    PrimitivePatchAddressing.C
-    PrimitivePatchBdryPoints.C
     PrimitivePatch.C
+    PrimitivePatchAddressing.C
+    PrimitivePatchBdryFaces.C
+    PrimitivePatchBdryPoints.C
     PrimitivePatchCheck.C
     PrimitivePatchClear.C
     PrimitivePatchEdgeLoops.C
     PrimitivePatchLocalPointOrder.C
     PrimitivePatchMeshData.C
     PrimitivePatchMeshEdges.C
-    PrimitivePatchName.C
     PrimitivePatchPointAddressing.C
     PrimitivePatchProjectPoints.C
 
@@ -61,6 +61,7 @@ SourceFiles
 #include "intersection.H"
 #include "HashSet.H"
 #include "objectHit.H"
+#include "PrimitivePatchBase.H"
 
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
@@ -71,13 +72,6 @@ namespace Foam
 class face;
 template<class T> class Map;
 
-/*---------------------------------------------------------------------------*\
-                        Class PrimitivePatchName Declaration
-\*---------------------------------------------------------------------------*/
-
-TemplateName(PrimitivePatch);
-
-
 /*---------------------------------------------------------------------------*\
                            Class PrimitivePatch Declaration
 \*---------------------------------------------------------------------------*/
@@ -85,7 +79,7 @@ TemplateName(PrimitivePatch);
 template<class FaceList, class PointField>
 class PrimitivePatch
 :
-    public PrimitivePatchName,
+    public PrimitivePatchBase,
     public FaceList
 {
 public:
@@ -129,7 +123,7 @@ private:
         PointField points_;
 
 
-    // Demand driven private data
+    // Demand-driven Private Data
 
         //- Edges of the patch; address into local point list;
         //  sorted with internal edges first in upper-triangular order
@@ -194,10 +188,10 @@ private:
 
     // Private Member Functions
 
-        //- Calculate edges of the patch
-        void calcIntBdryEdges() const;
+        //- Calculate internal points on a patch
+        void calcInternPoints() const;
 
-        //- Calculated boundary points on a patch
+        //- Calculate boundary points on a patch
         void calcBdryPoints() const;
 
         //- Calculate addressing
@@ -308,18 +302,24 @@ public:
             return points_;
         }
 
+        //- Number of faces in the patch
+        label nFaces() const
+        {
+            return FaceList::size();
+        }
+
 
     // Access functions for demand-driven data
 
         // Topological data; no mesh required.
 
-            //- Return number of points supporting patch faces
+            //- Number of points supporting patch faces
             label nPoints() const
             {
                 return meshPoints().size();
             }
 
-            //- Return number of edges in patch
+            //- Number of edges in patch
             label nEdges() const
             {
                 return edges().size();
@@ -328,9 +328,18 @@ public:
             //- Return list of edges, address into LOCAL point list
             const edgeList& edges() const;
 
+            //- Return sub-list of internal edges, address into LOCAL point list
+            const edgeList::subList internalEdges() const;
+
+            //- Return sub-list of boundary edges, address into LOCAL point list
+            const edgeList::subList boundaryEdges() const;
+
             //- Number of internal edges
             label nInternalEdges() const;
 
+            //- Number of boundary edges == (nEdges() - nInternalEdges())
+            label nBoundaryEdges() const;
+
             //- Is internal edge?
             bool isInternalEdge(const label edgei) const
             {
@@ -358,6 +367,10 @@ public:
             //- Return patch faces addressing into local point list
             const List<face_type>& localFaces() const;
 
+            //- Calculate and return list of local boundary faces.
+            //  These are the faces attached to boundary edges.
+            labelList boundaryFaces() const;
+
 
         // Addressing into mesh
 
@@ -382,7 +395,7 @@ public:
 
             //- Given an edge in local point labels, return its
             //- index in the edge list.  If the edge is not found, return -1
-            label whichEdge(const edge&) const;
+            label whichEdge(const edge& e) const;
 
             //- Return labels of patch edges in the global edge list using
             //- cell addressing
diff --git a/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchAddressing.C b/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchAddressing.C
index 7913307c60..1e9292768c 100644
--- a/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchAddressing.C
+++ b/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchAddressing.C
@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2016 OpenFOAM Foundation
-    Copyright (C) 2020 OpenCFD Ltd.
+    Copyright (C) 2020-2021 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -76,40 +76,29 @@ Foam::PrimitivePatch<FaceList, PointField>::calcAddressing() const
     edgeFacesPtr_.reset(new labelListList(maxEdges));
     auto& edgeFaces = *edgeFacesPtr_;
 
-    // faceFaces created using a dynamic list.  Cannot guess size because
-    // of multiple connections
-    List<DynamicList<label>> ff(locFcs.size());
-
     faceEdgesPtr_.reset(new labelListList(locFcs.size()));
     auto& faceEdges = *faceEdgesPtr_;
 
-    // count the number of face neighbours
-    labelList noFaceFaces(locFcs.size());
-
     // initialise the lists of subshapes for each face to avoid duplication
     edgeListList faceIntoEdges(locFcs.size());
 
     forAll(locFcs, facei)
     {
         faceIntoEdges[facei] = locFcs[facei].edges();
-
-        labelList& curFaceEdges = faceEdges[facei];
-        curFaceEdges.setSize(faceIntoEdges[facei].size());
-
-        forAll(curFaceEdges, faceEdgeI)
-        {
-            curFaceEdges[faceEdgeI] = -1;
-        }
+        faceEdges[facei].resize(faceIntoEdges[facei].size(), -1);
     }
 
+    // faceFaces created using a dynamic list.  Cannot guess size because
+    // of multiple connections
+    List<DynamicList<label>> ff(locFcs.size());
+
+
     // This algorithm will produce a separated list of edges, internal edges
     // starting from 0 and boundary edges starting from the top and
     // growing down.
 
     label nEdges = 0;
 
-    bool found = false;
-
     // Note that faceIntoEdges is sorted acc. to local vertex numbering
     // in face (i.e. curEdges[0] is edge between f[0] and f[1])
 
@@ -132,8 +121,6 @@ Foam::PrimitivePatch<FaceList, PointField>::calcAddressing() const
             // If the edge is already detected, skip
             if (faceEdges[facei][edgeI] >= 0) continue;
 
-            found = false;
-
             // Set reference to the current edge
             const edge& e = curEdges[edgeI];
 
@@ -141,6 +128,8 @@ Foam::PrimitivePatch<FaceList, PointField>::calcAddressing() const
 
             const labelList& nbrFaces = pf[e.start()];
 
+            bool found = false;
+
             forAll(nbrFaces, nbrFacei)
             {
                 // set reference to the current neighbour
@@ -212,7 +201,7 @@ Foam::PrimitivePatch<FaceList, PointField>::calcAddressing() const
 
                 // Set edge-face addressing
                 labelList& curEf = edgeFaces[nEdges];
-                curEf.setSize(cnf.size() + 1);
+                curEf.resize(cnf.size() + 1);
                 curEf[0] = facei;
 
                 forAll(cnf, cnfI)
@@ -256,7 +245,7 @@ Foam::PrimitivePatch<FaceList, PointField>::calcAddressing() const
 
                 // Add edgeFace
                 labelList& curEf = edgeFaces[nEdges];
-                curEf.setSize(1);
+                curEf.resize(1);
                 curEf[0] = facei;
 
                 nEdges++;
@@ -265,10 +254,10 @@ Foam::PrimitivePatch<FaceList, PointField>::calcAddressing() const
     }
 
     // edges
-    edges.setSize(nEdges);
+    edges.resize(nEdges);
 
     // edgeFaces list
-    edgeFaces.setSize(nEdges);
+    edgeFaces.resize(nEdges);
 
     // faceFaces list
     faceFacesPtr_.reset(new labelListList(locFcs.size()));
diff --git a/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchName.C b/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchBase.C
similarity index 92%
rename from src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchName.C
rename to src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchBase.C
index e3ffb769a5..822579bb16 100644
--- a/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchName.C
+++ b/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchBase.C
@@ -6,6 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2012 OpenFOAM Foundation
+    Copyright (C) 2021 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -25,13 +26,13 @@ License
 
 \*---------------------------------------------------------------------------*/
 
-#include "PrimitivePatch.H"
+#include "PrimitivePatchBase.H"
 
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
 namespace Foam
 {
-defineTypeNameAndDebug(PrimitivePatchName, 0);
+defineTypeNameAndDebug(PrimitivePatchBase, 0);
 }
 
 
diff --git a/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchBase.H b/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchBase.H
new file mode 100644
index 0000000000..2a2e0d0c96
--- /dev/null
+++ b/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchBase.H
@@ -0,0 +1,72 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | www.openfoam.com
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+    Copyright (C) 2021 OpenCFD Ltd.
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+Class
+    Foam::PrimitivePatchBase
+
+Description
+    Non-templated base elements for PrimitivePatch
+
+SourceFiles
+    PrimitivePatchBase.C
+
+\*---------------------------------------------------------------------------*/
+
+#ifndef PrimitivePatchBase_H
+#define PrimitivePatchBase_H
+
+#include "className.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+namespace Foam
+{
+
+/*---------------------------------------------------------------------------*\
+                     Class PrimitivePatchBase Declaration
+\*---------------------------------------------------------------------------*/
+
+class PrimitivePatchBase
+{
+public:
+
+    //- Runtime type information
+    ClassName("PrimitivePatch");
+
+
+    // Constructors
+
+        //- Default construct
+        PrimitivePatchBase() = default;
+};
+
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+} // End namespace Foam
+
+#endif
+
+// ************************************************************************* //
diff --git a/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchBdryFaces.C b/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchBdryFaces.C
new file mode 100644
index 0000000000..61bba9d782
--- /dev/null
+++ b/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchBdryFaces.C
@@ -0,0 +1,53 @@
+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | www.openfoam.com
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+    Copyright (C) 2021 OpenCFD Ltd.
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+\*---------------------------------------------------------------------------*/
+
+#include "PrimitivePatch.H"
+#include "HashSet.H"
+
+// * * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * //
+
+template<class FaceList, class PointField>
+Foam::labelList
+Foam::PrimitivePatch<FaceList, PointField>::boundaryFaces() const
+{
+    // By definition boundary edges have a _single_ face attached,
+    // but a face can easily have multiple boundary edges.
+
+    const labelListList& edgeToFace = edgeFaces();
+
+    labelHashSet bndFaces(2*nBoundaryEdges());
+
+    for (label edgei = nInternalEdges(); edgei < edgeToFace.size(); ++edgei)
+    {
+        bndFaces.insert(edgeToFace[edgei][0]);
+    }
+
+    return bndFaces.sortedToc();
+}
+
+
+// ************************************************************************* //
diff --git a/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchBdryPoints.C b/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchBdryPoints.C
index 3ced498e62..5b58bcf49e 100644
--- a/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchBdryPoints.C
+++ b/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchBdryPoints.C
@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2016 OpenFOAM Foundation
-    Copyright (C) 2020 OpenCFD Ltd.
+    Copyright (C) 2020-2021 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -45,16 +45,12 @@ Foam::PrimitivePatch<FaceList, PointField>::calcBdryPoints() const
             << abort(FatalError);
     }
 
-    const edgeList& e = edges();
+    labelHashSet bp(2*nEdges());
 
-    labelHashSet bp(2*e.size());
-
-    for (label edgeI = nInternalEdges_; edgeI < e.size(); edgeI++)
+    for (const edge& e : boundaryEdges())
     {
-        const edge& curEdge = e[edgeI];
-
-        bp.insert(curEdge.start());
-        bp.insert(curEdge.end());
+        bp.insert(e.first());
+        bp.insert(e.second());
     }
 
     boundaryPointsPtr_.reset(new labelList(bp.sortedToc()));
diff --git a/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchEdgeLoops.C b/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchEdgeLoops.C
index 90d9f75af5..8b19fb5320 100644
--- a/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchEdgeLoops.C
+++ b/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchEdgeLoops.C
@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2016 OpenFOAM Foundation
-    Copyright (C) 2020 OpenCFD Ltd.
+    Copyright (C) 2020-2021 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -49,12 +49,15 @@ Foam::PrimitivePatch<FaceList, PointField>::calcEdgeLoops() const
     }
 
     const edgeList& patchEdges = edges();
-    label nIntEdges = nInternalEdges();
-    label nBdryEdges = patchEdges.size() - nIntEdges;
+    const label nIntEdges = nInternalEdges();
+    const label nBdryEdges = patchEdges.size() - nIntEdges;
+
+    // Size return list plenty big
+    edgeLoopsPtr_.reset(new labelListList(nBdryEdges));
+    auto& edgeLoops = *edgeLoopsPtr_;
 
     if (nBdryEdges == 0)
     {
-        edgeLoopsPtr_.reset(new labelListList(0));
         return;
     }
 
@@ -68,11 +71,6 @@ Foam::PrimitivePatch<FaceList, PointField>::calcEdgeLoops() const
     // Loop per (boundary) edge.
     labelList loopNumber(nBdryEdges, -1);
 
-    // Size return list plenty big
-    edgeLoopsPtr_.reset(new labelListList(nBdryEdges));
-    auto& edgeLoops = *edgeLoopsPtr_;
-
-
     // Current loop number.
     label loopI = 0;
 
diff --git a/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchLocalPointOrder.C b/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchLocalPointOrder.C
index abe417f13e..d687718b92 100644
--- a/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchLocalPointOrder.C
+++ b/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchLocalPointOrder.C
@@ -41,13 +41,7 @@ Foam::PrimitivePatch<FaceList, PointField>::calcLocalPointOrder() const
     // Note: Cannot use bandCompressing as point-point addressing does
     // not exist and is not considered generally useful.
 
-    if (debug)
-    {
-        Pout<< "PrimitivePatch<FaceList, PointField>::"
-            << "calcLocalPointOrder() : "
-            << "calculating local point order"
-            << endl;
-    }
+    DebugInFunction << "Calculating local point order" << endl;
 
     if (localPointOrderPtr_)
     {
@@ -116,13 +110,7 @@ Foam::PrimitivePatch<FaceList, PointField>::calcLocalPointOrder() const
         }
     }
 
-    if (debug)
-    {
-        Pout<< "PrimitivePatch<FaceList, PointField>::"
-            << "calcLocalPointOrder() "
-            << "finished calculating local point order"
-            << endl;
-    }
+    DebugInfo << "Calculated local point order" << endl;
 }
 
 
diff --git a/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchMeshData.C b/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchMeshData.C
index df1e23e511..a58efd3385 100644
--- a/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchMeshData.C
+++ b/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchMeshData.C
@@ -35,13 +35,7 @@ template<class FaceList, class PointField>
 void
 Foam::PrimitivePatch<FaceList, PointField>::calcMeshData() const
 {
-    if (debug)
-    {
-        Pout<< "PrimitivePatch<FaceList, PointField>::"
-               "calcMeshData() : "
-               "calculating mesh data in PrimitivePatch"
-            << endl;
-    }
+    DebugInFunction << "Calculating mesh data" << endl;
 
     if (meshPointsPtr_ || localFacesPtr_)
     {
@@ -117,13 +111,7 @@ Foam::PrimitivePatch<FaceList, PointField>::calcMeshData() const
         }
     }
 
-    if (debug)
-    {
-        Pout<< "PrimitivePatch<FaceList, PointField>::"
-               "calcMeshData() : "
-               "finished calculating mesh data in PrimitivePatch"
-            << endl;
-    }
+    DebugInfo << "Calculated mesh data" << endl;
 }
 
 
@@ -131,13 +119,7 @@ template<class FaceList, class PointField>
 void
 Foam::PrimitivePatch<FaceList, PointField>::calcMeshPointMap() const
 {
-    if (debug)
-    {
-        Pout<< "PrimitivePatch<FaceList, PointField>::"
-               "calcMeshPointMap() : "
-               "calculating mesh point map in PrimitivePatch"
-            << endl;
-    }
+    DebugInFunction << "Calculating mesh point map" << endl;
 
     if (meshPointMapPtr_)
     {
@@ -157,13 +139,7 @@ Foam::PrimitivePatch<FaceList, PointField>::calcMeshPointMap() const
         mpMap.insert(mp[i], i);
     }
 
-    if (debug)
-    {
-        Pout<< "PrimitivePatch<FaceList, PointField>::"
-               "calcMeshPointMap() : "
-               "finished calculating mesh point map in PrimitivePatch"
-            << endl;
-    }
+    DebugInfo << "Calculated mesh point map" << endl;
 }
 
 
@@ -171,13 +147,7 @@ template<class FaceList, class PointField>
 void
 Foam::PrimitivePatch<FaceList, PointField>::calcLocalPoints() const
 {
-    if (debug)
-    {
-        Pout<< "PrimitivePatch<FaceList, PointField>::"
-               "calcLocalPoints() : "
-               "calculating localPoints in PrimitivePatch"
-            << endl;
-    }
+    DebugInFunction << "Calculating localPoints" << endl;
 
     if (localPointsPtr_)
     {
@@ -197,13 +167,7 @@ Foam::PrimitivePatch<FaceList, PointField>::calcLocalPoints() const
         locPts[pointi] = points_[meshPts[pointi]];
     }
 
-    if (debug)
-    {
-        Pout<< "PrimitivePatch<FaceList, PointField>::"
-            << "calcLocalPoints() : "
-            << "finished calculating localPoints in PrimitivePatch"
-            << endl;
-    }
+    DebugInfo << "Calculated localPoints" << endl;
 }
 
 
@@ -211,13 +175,7 @@ template<class FaceList, class PointField>
 void
 Foam::PrimitivePatch<FaceList, PointField>::calcPointNormals() const
 {
-    if (debug)
-    {
-        Pout<< "PrimitivePatch<FaceList, PointField>::"
-               "calcPointNormals() : "
-               "calculating pointNormals in PrimitivePatch"
-            << endl;
-    }
+    DebugInFunction << "Calculating pointNormals" << endl;
 
     if (pointNormalsPtr_)
     {
@@ -248,13 +206,7 @@ Foam::PrimitivePatch<FaceList, PointField>::calcPointNormals() const
         curNormal.normalise();
     }
 
-    if (debug)
-    {
-        Pout<< "PrimitivePatch<FaceList, PointField>::"
-               "calcPointNormals() : "
-               "finished calculating pointNormals in PrimitivePatch"
-            << endl;
-    }
+    DebugInfo << "Calculated pointNormals" << endl;
 }
 
 
@@ -262,13 +214,7 @@ template<class FaceList, class PointField>
 void
 Foam::PrimitivePatch<FaceList, PointField>::calcFaceCentres() const
 {
-    if (debug)
-    {
-        Pout<< "PrimitivePatch<FaceList, PointField>::"
-               "calcFaceCentres() : "
-               "calculating faceCentres in PrimitivePatch"
-            << endl;
-    }
+    DebugInFunction << "Calculating faceCentres" << endl;
 
     if (faceCentresPtr_)
     {
@@ -286,13 +232,7 @@ Foam::PrimitivePatch<FaceList, PointField>::calcFaceCentres() const
         c[facei] = this->operator[](facei).centre(points_);
     }
 
-    if (debug)
-    {
-        Pout<< "PrimitivePatch<FaceList, PointField>::"
-               "calcFaceCentres() : "
-               "finished calculating faceCentres in PrimitivePatch"
-            << endl;
-    }
+    DebugInfo << "Calculated faceCentres" << endl;
 }
 
 
@@ -300,13 +240,7 @@ template<class FaceList, class PointField>
 void
 Foam::PrimitivePatch<FaceList, PointField>::calcMagFaceAreas() const
 {
-    if (debug)
-    {
-        Pout<< "PrimitivePatch<FaceList, PointField>::"
-               "calcMagFaceAreas() : "
-               "calculating magFaceAreas in PrimitivePatch"
-            << endl;
-    }
+    DebugInFunction << "Calculating magFaceAreas" << endl;
 
     if (magFaceAreasPtr_)
     {
@@ -324,13 +258,7 @@ Foam::PrimitivePatch<FaceList, PointField>::calcMagFaceAreas() const
         a[facei] = this->operator[](facei).mag(points_);
     }
 
-    if (debug)
-    {
-        Pout<< "PrimitivePatch<FaceList, PointField>::"
-               "calcMagFaceAreas() : "
-               "finished calculating magFaceAreas in PrimitivePatch"
-            << endl;
-    }
+    DebugInfo << "Calculated magFaceAreas" << endl;
 }
 
 
@@ -338,13 +266,7 @@ template<class FaceList, class PointField>
 void
 Foam::PrimitivePatch<FaceList, PointField>::calcFaceAreas() const
 {
-    if (debug)
-    {
-        Pout<< "PrimitivePatch<FaceList, PointField>::"
-               "calcFaceAreas() : "
-               "calculating faceAreas in PrimitivePatch"
-            << endl;
-    }
+    DebugInFunction << "Calculating faceAreas" << endl;
 
     if (faceAreasPtr_)
     {
@@ -362,13 +284,7 @@ Foam::PrimitivePatch<FaceList, PointField>::calcFaceAreas() const
         n[facei] = this->operator[](facei).areaNormal(points_);
     }
 
-    if (debug)
-    {
-        Pout<< "PrimitivePatch<FaceList, PointField>::"
-               "calcFaceAreas() : "
-               "finished calculating faceAreas in PrimitivePatch"
-            << endl;
-    }
+    DebugInfo << "Calculated faceAreas" << endl;
 }
 
 
@@ -376,13 +292,7 @@ template<class FaceList, class PointField>
 void
 Foam::PrimitivePatch<FaceList, PointField>::calcFaceNormals() const
 {
-    if (debug)
-    {
-        Pout<< "PrimitivePatch<FaceList, PointField>::"
-               "calcFaceNormals() : "
-               "calculating faceNormals in PrimitivePatch"
-            << endl;
-    }
+    DebugInFunction << "Calculating faceNormals" << endl;
 
     if (faceNormalsPtr_)
     {
@@ -400,13 +310,7 @@ Foam::PrimitivePatch<FaceList, PointField>::calcFaceNormals() const
         n[facei] = this->operator[](facei).unitNormal(points_);
     }
 
-    if (debug)
-    {
-        Pout<< "PrimitivePatch<FaceList, PointField>::"
-               "calcFaceNormals() : "
-               "finished calculating faceNormals in PrimitivePatch"
-            << endl;
-    }
+    DebugInfo << "Calculated faceNormals" << endl;
 }
 
 
diff --git a/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchMeshEdges.C b/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchMeshEdges.C
index 9af7dcea2a..cf1a5af2fd 100644
--- a/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchMeshEdges.C
+++ b/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchMeshEdges.C
@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2016 OpenFOAM Foundation
-    Copyright (C) 2020 OpenCFD Ltd.
+    Copyright (C) 2020-2021 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -43,47 +43,38 @@ meshEdges
     DebugInFunction
         << "Calculating labels of patch edges in mesh edge list" << nl;
 
-    // get reference to the list of edges on the patch
+    // The list of edges on the patch
     const edgeList& PatchEdges = edges();
 
+    // The output storage
+    labelList meshEdges(PatchEdges.size());
+
     const labelListList& EdgeFaces = edgeFaces();
 
-    // create the storage
-    labelList meshEdges(PatchEdges.size());
-
-    bool found = false;
-
-    // get reference to the points on the patch
+    // The mesh points associated with the patch
     const labelList& pp = meshPoints();
 
     // WARNING: Remember that local edges address into local point list;
     // local-to-global point label translation is necessary
-    forAll(PatchEdges, edgeI)
+    forAll(PatchEdges, edgei)
     {
-        const edge curEdge
-            (pp[PatchEdges[edgeI].start()], pp[PatchEdges[edgeI].end()]);
+        bool found = false;
 
-        found = false;
+        const edge globalEdge(pp, PatchEdges[edgei]);
 
-        // get the patch faces sharing the edge
-        const labelList& curFaces = EdgeFaces[edgeI];
-
-        forAll(curFaces, facei)
+        // For each patch face sharing the edge
+        for (const label patchFacei : EdgeFaces[edgei])
         {
-            // get the cell next to the face
-            label curCell = faceCells[curFaces[facei]];
+            // The cell next to the face
+            const label curCelli = faceCells[patchFacei];
 
-            // get reference to edges on the cell
-            const labelList& ce = cellEdges[curCell];
-
-            forAll(ce, cellEdgeI)
+            // Check the cell edges
+            for (const label cellEdgei : cellEdges[curCelli])
             {
-                if (allEdges[ce[cellEdgeI]] == curEdge)
+                if (allEdges[cellEdgei] == globalEdge)
                 {
                     found = true;
-
-                    meshEdges[edgeI] = ce[cellEdgeI];
-
+                    meshEdges[edgei] = cellEdgei;
                     break;
                 }
             }
@@ -107,29 +98,27 @@ Foam::PrimitivePatch<FaceList, PointField>::meshEdges
     DebugInFunction
         << "Calculating labels of patch edges in mesh edge list" << nl;
 
-    // get reference to the list of edges on the patch
+    // The list of edges on the patch
     const edgeList& PatchEdges = edges();
 
-    // create the storage
+    // The output storage
     labelList meshEdges(PatchEdges.size());
 
-    // get reference to the points on the patch
+    // The mesh points associated with the patch
     const labelList& pp = meshPoints();
 
     // WARNING: Remember that local edges address into local point list;
     // local-to-global point label translation is necessary
-    forAll(PatchEdges, edgeI)
+    forAll(PatchEdges, edgei)
     {
-        const label globalPointi = pp[PatchEdges[edgeI].start()];
-        const edge curEdge(globalPointi, pp[PatchEdges[edgeI].end()]);
+        const edge globalEdge(pp, PatchEdges[edgei]);
 
-        const labelList& pe = pointEdges[globalPointi];
-
-        forAll(pe, i)
+        // Check the attached edges
+        for (const label patchEdgei : pointEdges[globalEdge.start()])
         {
-            if (allEdges[pe[i]] == curEdge)
+            if (allEdges[patchEdgei] == globalEdge)
             {
-                meshEdges[edgeI] = pe[i];
+                meshEdges[edgei] = patchEdgei;
                 break;
             }
         }
@@ -148,18 +137,16 @@ Foam::PrimitivePatch<FaceList, PointField>::whichEdge
     const edge& e
 ) const
 {
-    // Get pointEdges from the starting point and search all the candidates
-    const edgeList& Edges = edges();
-
-    if (e.start() > -1 && e.start() < nPoints())
+    if (e.start() >= 0 && e.start() < nPoints())
     {
-        const labelList& pe = pointEdges()[e.start()];
+        // Get pointEdges from the starting point and search all the candidates
+        const edgeList& Edges = edges();
 
-        forAll(pe, peI)
+        for (const label patchEdgei : pointEdges()[e.start()])
         {
-            if (e == Edges[pe[peI]])
+            if (e == Edges[patchEdgei])
             {
-                return pe[peI];
+                return patchEdgei;
             }
         }
     }
diff --git a/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchPointAddressing.C b/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchPointAddressing.C
index d564e3e939..20b72272ea 100644
--- a/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchPointAddressing.C
+++ b/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchPointAddressing.C
@@ -54,8 +54,7 @@ Foam::PrimitivePatch<FaceList, PointField>::calcPointEdges() const
 
     invertManyToMany(pe.size(), edges(), pe);
 
-    DebugInfo
-        << "    Finished." << endl;
+    DebugInfo << "    Finished." << endl;
 }
 
 
@@ -81,9 +80,7 @@ Foam::PrimitivePatch<FaceList, PointField>::calcPointFaces() const
 
     forAll(locFcs, facei)
     {
-        const face_type& curPoints = locFcs[facei];
-
-        for (const label pointi : curPoints)
+        for (const label pointi : locFcs[facei])
         {
             pointFcs[pointi].append(facei);
         }
@@ -98,8 +95,7 @@ Foam::PrimitivePatch<FaceList, PointField>::calcPointFaces() const
         pf[pointi] = pointFcs[pointi];
     }
 
-    DebugInfo
-        << "    Finished." << endl;
+    DebugInfo << "    Finished." << endl;
 }
 
 
diff --git a/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchProjectPoints.C b/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchProjectPoints.C
index 886a606200..7ca7f5d079 100644
--- a/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchProjectPoints.C
+++ b/src/OpenFOAM/meshes/primitiveMesh/PrimitivePatch/PrimitivePatchProjectPoints.C
@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2016 OpenFOAM Foundation
-    Copyright (C) 2020 OpenCFD Ltd.
+    Copyright (C) 2020-2021 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -200,7 +200,7 @@ Foam::PrimitivePatch<FaceList, PointField>::projectPoints
                     }
                 }
 
-                if (debug) Info<< ".";
+                DebugInfo << '.';
             } while (closer);
         }
 
@@ -211,10 +211,7 @@ Foam::PrimitivePatch<FaceList, PointField>::projectPoints
         {
             nNSquaredSearches++;
 
-            if (debug)
-            {
-                Info<< "p " << curLocalPointLabel << ": ";
-            }
+            DebugInfo << "p " << curLocalPointLabel << ": ";
 
             result[curLocalPointLabel] = objectHit(false, -1);
             scalar minDistance = GREAT;
@@ -254,23 +251,18 @@ Foam::PrimitivePatch<FaceList, PointField>::projectPoints
                 }
             }
 
-            if (debug)
-            {
-                Info<< result[curLocalPointLabel] << nl;
-            }
+            DebugInfo << result[curLocalPointLabel] << nl;
         }
         else
         {
-            if (debug) Info<< "x";
+            DebugInfo << 'x';
         }
     }
 
-    if (debug)
-    {
-        Info<< nl << "Executed " << nNSquaredSearches
-            << " n-squared searches out of total of "
-            << nPoints() << endl;
-    }
+    DebugInfo
+        << nl << "Executed " << nNSquaredSearches
+        << " n-squared searches out of total of "
+        << nPoints() << endl;
 
     return result;
 }
@@ -439,7 +431,7 @@ Foam::PrimitivePatch<FaceList, PointField>::projectFaceCentres
                     }
                 }
 
-                if (debug) Info<< ".";
+                DebugInfo << '.';
             } while (closer);
         }
 
@@ -447,10 +439,7 @@ Foam::PrimitivePatch<FaceList, PointField>::projectFaceCentres
         {
             nNSquaredSearches++;
 
-            if (debug)
-            {
-                Info<< "p " << curLocalFaceLabel << ": ";
-            }
+            DebugInfo << "p " << curLocalFaceLabel << ": ";
 
             result[curLocalFaceLabel] = objectHit(false, -1);
             scalar minDistance = GREAT;
@@ -490,23 +479,19 @@ Foam::PrimitivePatch<FaceList, PointField>::projectFaceCentres
                 }
             }
 
-            if (debug)
-            {
-                Info<< result[curLocalFaceLabel] << nl;
-            }
+            DebugInfo << result[curLocalFaceLabel] << nl;
         }
         else
         {
-            if (debug) Info<< "x";
+            DebugInfo << 'x';
         }
     }
 
-    if (debug)
-    {
-        Info<< nl << "Executed " << nNSquaredSearches
-            << " n-squared searches out of total of "
-            << this->size() << endl;
-    }
+    DebugInfo
+        << nl
+        << "Executed " << nNSquaredSearches
+        << " n-squared searches out of total of "
+        << this->size() << endl;
 
     return result;
 }