ENH: code cleanup for vtk transcription

- use cellCentres() instead of volField equivalent for vtk conversion

- make looping variables more consistent

- centralize the transcription of OpenFOAM -> vtk tuples

src/catalyst/areaMesh/foamVtkFaMeshAdaptorFieldTemplates.C

@@ -43,16 +43,15 @@ void Foam::vtk::faMeshAdaptor::convertAreaFields
     const wordRes& selectFields
 )
 {
-    typedef GeometricField<Type, faPatchField, areaMesh> FieldType;
+    const auto& obr = mesh_.mesh();
 
-    // Restrict to GeometricField<Type, ...>
-    const wordList names(mesh_.mesh().sortedNames<FieldType>(selectFields));
+    typedef GeometricField<Type, faPatchField, areaMesh> fieldType;
 
-    for (const word& fieldName : names)
+    for (const word& fieldName : obr.sortedNames<fieldType>(selectFields))
     {
         convertAreaField
         (
-            mesh_.mesh().lookupObject<FieldType>(fieldName)
+            obr.lookupObject<fieldType>(fieldName)
         );
     }
 }
@@ -97,37 +96,8 @@ Foam::vtk::faMeshAdaptor::convertAreaFieldToVTK
     const foamVtpData& vtpData
 ) const
 {
-    const int nComp(pTraits<Type>::nComponents);
-
-    auto data = vtkSmartPointer<vtkFloatArray>::New();
-    data->SetName(fld.name().c_str());
-    data->SetNumberOfComponents(nComp);
-    data->SetNumberOfTuples(fld.size());
-
-    const label len = fld.size();
-
-    if (debug)
-    {
-        Info<< "convert areaField: "
-            << fld.name()
-            << " size=" << len
-            << " nComp=" << nComp << endl;
-    }
-
-    float scratch[nComp];
-    for (label i=0; i < len; ++i)
-    {
-        const Type& t = fld[i];
-        for (direction d=0; d<nComp; ++d)
-        {
-            scratch[d] = component(t, d);
-        }
-        remapTuple<Type>(scratch);
-
-        data->SetTuple(i, scratch);
-    }
-
-    return data;
+    // The vtpData is not used for anything
+    return vtk::Tools::convertFieldToVTK(fld.name(), fld);
 }
 
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

src/catalyst/areaMesh/foamVtkFaMeshAdaptorFields.C

@@ -34,28 +34,6 @@ License
 // Templates (only needed here)
 #include "foamVtkFaMeshAdaptorFieldTemplates.C"
 
-// * * * * * * * * * * * * * * * Local Functions * * * * * * * * * * * * * * //
-
-namespace Foam
-{
-
-template<class Type>
-static wordHashSet supportedTypes()
-{
-    // typedef DimensionedField<Type, areaMesh> DimFieldType;
-    typedef GeometricField<Type, faPatchField, areaMesh> AreaFieldType;
-
-    wordHashSet types;
-
-    // TODO: types.insert(DimFieldType::typeName);
-    types.insert(AreaFieldType::typeName);
-
-    return types;
-}
-
-} // End namespace Foam
-
-
 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
 Foam::wordHashSet Foam::vtk::faMeshAdaptor::knownFields
@@ -63,30 +41,20 @@ Foam::wordHashSet Foam::vtk::faMeshAdaptor::knownFields
     const wordRes& selectFields
 ) const
 {
-    wordHashSet allFields;
-
     // Quick exit if no volume fields can be converted.
     // This could be refined
     HashTable<wordHashSet> objects = mesh_.mesh().classes(selectFields);
 
-    if (objects.empty())
-    {
-        return allFields;
-    }
-
-    wordHashSet types;
-
-    types += supportedTypes<scalar>();
-    types += supportedTypes<vector>();
-    types += supportedTypes<sphericalTensor>();
-    types += supportedTypes<symmTensor>();
-    types += supportedTypes<tensor>();
-
-    objects.retain(types);
+    wordHashSet allFields(2*objects.size());
 
     forAllConstIters(objects, iter)
     {
-        allFields += iter.object();
+        const word& clsName = iter.key();
+
+        if (fieldTypes::area.found(clsName))
+        {
+            allFields += iter.object();
+        }
     }
 
     return allFields;

src/catalyst/areaMesh/foamVtkFaMeshAdaptorGeom.C

@@ -40,19 +40,16 @@ void Foam::vtk::faMeshAdaptor::convertGeometryInternal()
         if (meshState_ == polyMesh::UNCHANGED)
         {
             // Without movement is easy.
-            if (debug)
-            {
-                Info<< "reuse " << longName << nl;
-            }
+            DebugInfo
+                << "reuse " << longName << nl;
+
             vtpData.reuse();
             return;
         }
         else if (meshState_ == polyMesh::POINTS_MOVED)
         {
-            if (debug)
-            {
-                Info<< "move points " << longName << nl;
-            }
+            DebugInfo
+                << "move points " << longName << nl;
 
             vtkgeom = vtpData.getCopy();
             vtkgeom->SetPoints
@@ -64,10 +61,8 @@ void Foam::vtk::faMeshAdaptor::convertGeometryInternal()
 
     if (!vtkgeom)
     {
-        if (debug)
-        {
-            Info<< "Nothing usable from cache - create new geometry" << nl;
-        }
+        DebugInfo
+            << "Nothing usable from cache - create new geometry" << nl;
 
         vtkgeom = vtk::Tools::Patch::mesh(mesh_.patch());
     }

src/catalyst/cloud/foamVtkCloudAdaptorTemplates.C

@@ -37,25 +37,28 @@ Foam::label Foam::vtk::cloudAdaptor::convertLagrangianFields
     const objectRegistry& obr
 )
 {
-    const wordList fieldNames(obr.sortedNames<IOField<Type>>());
+    typedef IOField<Type> fieldType;
 
-    for (const word& fieldName : fieldNames)
+    label nFields = 0;
+
+    for (const word& fieldName : obr.sortedNames<fieldType>())
     {
-        const auto& fld = obr.lookupObject<IOField<Type>>(fieldName);
+        const auto& fld = obr.lookupObject<fieldType>(fieldName);
 
-        vtkSmartPointer<vtkFloatArray> data =
-            vtk::Tools::convertFieldToVTK
-            (
-                fieldName,
-                fld
-            );
+        vtkSmartPointer<vtkFloatArray> data = vtk::Tools::convertFieldToVTK
+        (
+            fld.name(),
+            fld
+        );
 
         // Provide identical data as cell and as point data
         vtkmesh->GetCellData()->AddArray(data);
         vtkmesh->GetPointData()->AddArray(data);
+
+        ++nFields;
     }
 
-    return fieldNames.size();
+    return nFields;
 }
 
 

src/catalyst/volMesh/foamVtkFvMeshAdaptor.H

@@ -141,7 +141,6 @@ private:
             public vtk::Caching<vtkUnstructuredGrid>,
             public foamVtkMeshMaps
         {
-
             //- The vtk points for the mesh (and decomposition)
             vtkSmartPointer<vtkPoints> points
             (

src/catalyst/volMesh/foamVtkFvMeshAdaptorFieldTemplates.C

@@ -173,17 +173,20 @@ void Foam::vtk::fvMeshAdaptor::convertVolFields
     const wordRes& selectFields
 )
 {
-    typedef GeometricField<Type, fvPatchField, volMesh> FieldType;
+    typedef GeometricField<Type, fvPatchField, volMesh> fieldType;
 
     // Restrict to GeometricField<Type, ...>
-    const wordList names(mesh_.sortedNames<FieldType>(selectFields));
 
-    for (const word& fieldName : names)
+    for
+    (
+        const word& fieldName
+      : mesh_.sortedNames<fieldType>(selectFields)
+    )
     {
         convertVolField
         (
             patchInterpList,
-            mesh_.lookupObject<FieldType>(fieldName)
+            mesh_.lookupObject<fieldType>(fieldName)
         );
     }
 }
@@ -274,75 +277,50 @@ vtkSmartPointer<vtkFloatArray> Foam::vtk::fvMeshAdaptor::convertPointField
         data->SetName(pfld.name().c_str());
     }
 
-    if (debug)
-    {
-        Info<< "convert Point field: "
-            << pfld.name()
-            << " size="  << (nPoints + addPointCellLabels.size())
-            << " (" << nPoints << " + " << addPointCellLabels.size()
-            << ") nComp=" << nComp << endl;
-    }
+    DebugInfo
+        << "convert Point field: " << pfld.name()
+        << " size="  << (nPoints + addPointCellLabels.size())
+        << " (" << nPoints << " + " << addPointCellLabels.size()
+        << ") nComp=" << nComp << endl;
 
-    float vec[pTraits<Type>::nComponents];
 
-    label pointi = 0;
+    float scratch[pTraits<Type>::nComponents];
+
+    vtkIdType pointi = 0;
     if (pointMap.size())
     {
-        forAll(pointMap, i)
+        for (const label meshPointi : pointMap)
         {
-            const Type& t = pfld[pointMap[i]];
-            for (direction d=0; d<nComp; ++d)
-            {
-                vec[d] = component(t, d);
-            }
-            remapTuple<Type>(vec);
-
-            data->SetTuple(pointi++, vec);
+            foamToVtkTuple(scratch, pfld[meshPointi]);
+            data->SetTuple(pointi++, scratch);
         }
     }
     else
     {
-        forAll(pfld, i)
+        for (const Type& val : pfld)
         {
-            const Type& t = pfld[i];
-            for (direction d=0; d<nComp; ++d)
-            {
-                vec[d] = component(t, d);
-            }
-            remapTuple<Type>(vec);
-
-            data->SetTuple(pointi++, vec);
+            foamToVtkTuple(scratch, val);
+            data->SetTuple(pointi++, scratch);
         }
     }
 
     // Continue with additional points
+    // - correspond to cell centres
 
     if (notNull(vfld))
     {
-        forAll(addPointCellLabels, apI)
+        for (const label meshCelli : addPointCellLabels)
         {
-            const Type& t = vfld[addPointCellLabels[apI]];
-            for (direction d=0; d<nComp; ++d)
-            {
-                vec[d] = component(t, d);
-            }
-            remapTuple<Type>(vec);
-
-            data->SetTuple(pointi++, vec);
+            foamToVtkTuple(scratch, vfld[meshCelli]);
+            data->SetTuple(pointi++, scratch);
         }
     }
     else
     {
-        forAll(addPointCellLabels, apI)
+        for (const label meshCelli : addPointCellLabels)
         {
-            Type t = interpolatePointToCell(pfld, addPointCellLabels[apI]);
-            for (direction d=0; d<nComp; ++d)
-            {
-                vec[d] = component(t, d);
-            }
-            remapTuple<Type>(vec);
-
-            data->SetTuple(pointi++, vec);
+            foamToVtkTuple(scratch, interpolatePointToCell(pfld, meshCelli));
+            data->SetTuple(pointi++, scratch);
         }
     }
 
@@ -371,27 +349,21 @@ Foam::vtk::fvMeshAdaptor::convertVolFieldToVTK
     data->SetNumberOfComponents(nComp);
     data->SetNumberOfTuples(cellMap.size());
 
-    if (debug)
-    {
-        Info<< "convert volField: "
-            << fld.name()
-            << " size=" << cellMap.size()
-            << " (" << fld.size() << " + "
-            << (cellMap.size() - fld.size())
-            << ") nComp=" << nComp << endl;
-    }
+    DebugInfo
+        << "convert volField: " << fld.name()
+        << " size=" << cellMap.size()
+        << " (" << fld.size() << " + "
+        << (cellMap.size() - fld.size())
+        << ") nComp=" << nComp << endl;
 
-    float scratch[nComp];
-    forAll(cellMap, i)
-    {
-        const Type& t = fld[cellMap[i]];
-        for (direction d=0; d<nComp; ++d)
-        {
-            scratch[d] = component(t, d);
-        }
-        remapTuple<Type>(scratch);
 
-        data->SetTuple(i, scratch);
+    float scratch[pTraits<Type>::nComponents];
+
+    vtkIdType celli = 0;
+    for (const label meshCelli : cellMap)
+    {
+        foamToVtkTuple(scratch, fld[meshCelli]);
+        data->SetTuple(celli++, scratch);
     }
 
     return data;

src/catalyst/volMesh/foamVtkFvMeshAdaptorFields.C

@@ -34,55 +34,30 @@ License
 
 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
-namespace Foam
-{
-
-template<class Type>
-static wordHashSet supportedTypes()
-{
-    // typedef DimensionedField<Type, volMesh> DimFieldType;
-    typedef GeometricField<Type, fvPatchField, volMesh> VolFieldType;
-
-    wordHashSet types;
-
-    // TODO: types.insert(DimFieldType::typeName);
-    types.insert(VolFieldType::typeName);
-
-    return types;
-}
-
-} // End namespace Foam
-
-
 Foam::wordHashSet Foam::vtk::fvMeshAdaptor::knownFields
 (
     const wordRes& selectFields
 ) const
 {
-    wordHashSet allFields;
-
     // Quick exit if no volume fields can be converted.
     // This could be refined
     HashTable<wordHashSet> objects = mesh_.classes(selectFields);
 
-    if (objects.empty())
-    {
-        return allFields;
-    }
-
-    wordHashSet types;
-
-    types += supportedTypes<scalar>();
-    types += supportedTypes<vector>();
-    types += supportedTypes<sphericalTensor>();
-    types += supportedTypes<symmTensor>();
-    types += supportedTypes<tensor>();
-
-    objects.retain(types);
+    wordHashSet allFields(2*objects.size());
 
     forAllConstIters(objects, iter)
     {
-        allFields += iter.object();
+        const word& clsName = iter.key();
+
+        if
+        (
+            fieldTypes::volume.found(clsName)
+            // TODO
+            // || fieldTypes::internal.found(clsName)
+        )
+        {
+            allFields += iter.object();
+        }
     }
 
     return allFields;

src/catalyst/volMesh/foamVtkFvMeshAdaptorGeom.C

@@ -52,19 +52,17 @@ void Foam::vtk::fvMeshAdaptor::convertGeometryInternal()
     {
         if (meshState_ == polyMesh::UNCHANGED)
         {
-            if (debug)
-            {
-                Info<< "reuse " << longName << nl;
-            }
+            DebugInfo
+                << "reuse " << longName << nl;
+
             vtuData.reuse();  // No movement - simply reuse
             return;
         }
         else if (meshState_ == polyMesh::POINTS_MOVED)
         {
-            if (debug)
-            {
-                Info<< "move points " << longName << nl;
-            }
+            DebugInfo
+                << "move points " << longName << nl;
+
             vtkgeom = vtuData.getCopy();
             vtkgeom->SetPoints(vtuData.points(mesh_));
         }
@@ -72,10 +70,8 @@ void Foam::vtk::fvMeshAdaptor::convertGeometryInternal()
 
     if (!vtkgeom)
     {
-        if (debug)
-        {
-            Info<< "Nothing usable from cache - create new geometry" << nl;
-        }
+        DebugInfo
+            << "Nothing usable from cache - create new geometry" << nl;
 
         // Nothing usable from cache - create new geometry
         vtkgeom = vtuData.internal(mesh_, decomposePoly_);
@@ -103,20 +99,18 @@ void Foam::vtk::fvMeshAdaptor::convertGeometryBoundary()
         {
             if (meshState_ == polyMesh::UNCHANGED)
             {
-                if (debug)
-                {
-                    Info<< "reuse " << longName << nl;
-                }
+                DebugInfo
+                    << "reuse " << longName << nl;
+
                 vtpData.reuse();  // No movement - simply reuse
                 continue;
             }
             else if (meshState_ == polyMesh::POINTS_MOVED)
             {
                 // Point movement on single patch
-                if (debug)
-                {
-                    Info<< "move points " << longName << nl;
-                }
+                DebugInfo
+                    << "move points " << longName << nl;
+
                 vtkgeom = vtpData.getCopy();
                 vtkgeom->SetPoints(vtk::Tools::Patch::points(pp));
             }
@@ -124,11 +118,9 @@ void Foam::vtk::fvMeshAdaptor::convertGeometryBoundary()
 
         vtpData.clear(); // Remove any old mappings
 
-        if (debug)
-        {
-            Info<< "Creating VTK mesh for patch [" << patchId <<"] "
-                << longName << endl;
-        }
+        DebugInfo
+            << "Creating VTK mesh for patch [" << patchId <<"] "
+            << longName << endl;
 
         // Unused information
         vtpData.additionalIds().clear();

src/catalyst/volMesh/foamVtkFvMeshAdaptorGeomVtu.C

@@ -48,23 +48,21 @@ Foam::vtk::fvMeshAdaptor::foamVtuData::points
     const pointField& pts = mesh.points();
 
     // Additional cell centres
-    const labelList& addPoints = this->additionalIds();
+    const labelUList& addPoints = this->additionalIds();
 
     vtkpoints->SetNumberOfPoints(pts.size() + addPoints.size());
 
     // Normal points
-    label pointId = 0;
+    vtkIdType pointId = 0;
     for (const point& p : pts)
     {
-        vtkpoints->SetPoint(pointId, p.v_);
-        ++pointId;
+        vtkpoints->SetPoint(pointId++, p.v_);
     }
 
     // Cell centres
-    for (const label ptId : addPoints)
+    for (const label meshCelli : addPoints)
     {
-        vtkpoints->SetPoint(pointId, mesh.C()[ptId].v_);
-        ++pointId;
+        vtkpoints->SetPoint(pointId++, mesh.cellCentres()[meshCelli].v_);
     }
 
     return vtkpoints;
@@ -85,23 +83,21 @@ Foam::vtk::fvMeshAdaptor::foamVtuData::points
     const pointField& pts = mesh.points();
 
     // Additional cell centres
-    const labelList& addPoints = this->additionalIds();
+    const labelUList& addPoints = this->additionalIds();
 
     vtkpoints->SetNumberOfPoints(pointMap.size() + addPoints.size());
 
     // Normal points
-    label pointId = 0;
-    for (const label ptId : pointMap)
+    vtkIdType pointId = 0;
+    for (const label meshPointi : pointMap)
     {
-        vtkpoints->SetPoint(pointId, pts[ptId].v_);
-        ++pointId;
+        vtkpoints->SetPoint(pointId++, pts[meshPointi].v_);
     }
 
     // Cell centres
-    for (const label ptId : addPoints)
+    for (const label meshCelli : addPoints)
     {
-        vtkpoints->SetPoint(pointId, mesh.C()[ptId].v_);
-        ++pointId;
+        vtkpoints->SetPoint(pointId++, mesh.cellCentres()[meshCelli].v_);
     }
 
     return vtkpoints;

src/paraview-plugins/vtkPVFoam/vtkPVFoamFieldTemplates.C

@@ -40,11 +40,11 @@ InClass
 #include "areaFaMesh.H"
 #include "areaFields.H"
 
-// vtk includes
-#include "vtkFloatArray.h"
-#include "vtkCellData.h"
-#include "vtkPointData.h"
-#include "vtkSmartPointer.h"
+// VTK includes
+#include <vtkFloatArray.h>
+#include