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ENH: replace paraview vtk conversion with library utilities
- this allows filling in the VTK structures without intermediate data and without sequencial insertion. Should be faster and smaller than the previous cell-wise insertion methods. Most importantly, it improves code reuse.
This commit is contained in:
Mark Olesen
@ -0,0 +1,115 @@
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/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright (C) 2017 OpenCFD Ltd.
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
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\*---------------------------------------------------------------------------*/
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#ifndef foamVtkAdaptors_H
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#define foamVtkAdaptors_H
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// OpenFOAM includes
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#include "labelList.H"
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// VTK includes
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#include "vtkCellArray.h"
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#include "vtkIdTypeArray.h"
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#include "vtkSmartPointer.h"
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#include "vtkUnsignedCharArray.h"
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#include "vtkAOSDataArrayTemplate.h"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace Foam
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{
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//- Attach a smart pointer, or generate a non-null one.
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template<class T>
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inline vtkSmartPointer<T> nonNullSmartPointer(T* ptr)
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{
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return vtkSmartPointer<T>(ptr ? ptr : T::New());
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}
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//- Helper to wrap vtkUnsignedCharArray as a UList
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inline UList<uint8_t> vtkUList
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(
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vtkUnsignedCharArray* array,
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const label size
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)
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{
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array->SetNumberOfComponents(1);
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array->SetNumberOfTuples(size);
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UList<uint8_t> list
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(
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array->WritePointer(0, size),
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size
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);
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return list;
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}
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//- Helper to wrap vtkIdTypeArray as a UList
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inline UList<vtkIdType> vtkUList
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(
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vtkIdTypeArray* array,
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const label size
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)
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{
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array->SetNumberOfComponents(1);
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array->SetNumberOfTuples(size);
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UList<vtkIdType> list
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(
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array->WritePointer(0, size),
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size
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);
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return list;
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}
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//- Special helper to wrap vtkCellArray as a UList
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inline UList<vtkIdType> vtkUList
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(
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vtkCellArray* cells,
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const label nCells,
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const label size
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)
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{
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cells->GetData()->SetNumberOfTuples(size);
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UList<vtkIdType> list
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(
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cells->WritePointer(nCells, size),
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size
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);
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return list;
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}
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}
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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#endif
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// ************************************************************************* //
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@ -28,13 +28,11 @@ License
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// OpenFOAM includes
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// OpenFOAM includes
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#include "fvMesh.H"
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#include "fvMesh.H"
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#include "cellModeller.H"
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#include "foamVtuSizing.H"
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// VTK includes
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// VTK includes
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#include "vtkCellArray.h"
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#include "vtkIdTypeArray.h"
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#include "vtkUnstructuredGrid.h"
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#include "vtkUnstructuredGrid.h"
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#include "vtkSmartPointer.h"
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#include "foamVtkAdaptors.H"
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// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
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// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
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@ -44,383 +42,134 @@ vtkSmartPointer<vtkUnstructuredGrid> Foam::vtkPVFoam::volumeVTKMesh
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foamVtuData& vtuData
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foamVtuData& vtuData
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)
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)
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{
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{
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const cellModel& tet = *(cellModeller::lookup("tet"));
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if (debug)
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const cellModel& pyr = *(cellModeller::lookup("pyr"));
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{
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const cellModel& prism = *(cellModeller::lookup("prism"));
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Info<< "<beg> " << FUNCTION_NAME << endl;
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const cellModel& wedge = *(cellModeller::lookup("wedge"));
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printMemory();
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const cellModel& tetWedge = *(cellModeller::lookup("tetWedge"));
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}
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const cellModel& hex = *(cellModeller::lookup("hex"));
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foamVtuSizing sizing(mesh, !reader_->GetUseVTKPolyhedron());
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vtkSmartPointer<vtkUnstructuredGrid> vtkmesh =
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vtkSmartPointer<vtkUnstructuredGrid> vtkmesh =
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vtkSmartPointer<vtkUnstructuredGrid>::New();
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vtkSmartPointer<vtkUnstructuredGrid>::New();
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if (debug)
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auto cellTypes =
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{
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nonNullSmartPointer<vtkUnsignedCharArray>(vtkmesh->GetCellTypesArray());
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Info<< "<beg> volumeVTKMesh" << endl;
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printMemory();
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}
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const cellShapeList& cellShapes = mesh.cellShapes();
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auto cells =
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nonNullSmartPointer<vtkCellArray>(vtkmesh->GetCells());
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// Number of additional points needed by the decomposition of polyhedra
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auto faces =
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label nAddPoints = 0;
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nonNullSmartPointer<vtkIdTypeArray>(vtkmesh->GetFaces());
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// Number of additional cells generated by the decomposition of polyhedra
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auto cellLocations =
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label nAddCells = 0;
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nonNullSmartPointer<vtkIdTypeArray>(vtkmesh->GetCellLocationsArray());
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// face owner is needed to determine the face orientation
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auto faceLocations =
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const labelList& owner = mesh.faceOwner();
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nonNullSmartPointer<vtkIdTypeArray>(vtkmesh->GetFaceLocations());
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labelList& cellMap = vtuData.cellMap();
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UList<uint8_t> cellTypesUL =
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labelList& addPointCellLabels = vtuData.additionalIds();
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vtkUList
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// Scan for cells which need to be decomposed and count additional points
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// and cells
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if (!reader_->GetUseVTKPolyhedron())
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{
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forAll(cellShapes, celli)
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{
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const cellModel& model = cellShapes[celli].model();
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if
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(
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(
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model != hex
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cellTypes,
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&& model != wedge
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sizing.nFieldCells()
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&& model != prism
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);
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&& model != pyr
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&& model != tet
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&& model != tetWedge
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)
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{
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const cell& cFaces = mesh.cells()[celli];
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forAll(cFaces, cFacei)
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UList<vtkIdType> cellsUL =
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{
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vtkUList
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const face& f = mesh.faces()[cFaces[cFacei]];
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(
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cells,
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sizing.nFieldCells(),
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sizing.sizeInternal(foamVtuSizing::slotType::CELLS)
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);
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label nQuads = 0;
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UList<vtkIdType> cellLocationsUL =
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label nTris = 0;
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vtkUList
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f.nTrianglesQuads(mesh.points(), nTris, nQuads);
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(
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cellLocations,
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sizing.sizeInternal(foamVtuSizing::slotType::CELLS_OFFSETS)
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);
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nAddCells += nQuads + nTris;
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UList<vtkIdType> facesUL =
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}
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vtkUList
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(
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faces,
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sizing.sizeInternal(foamVtuSizing::slotType::FACES)
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);
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nAddCells--;
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UList<vtkIdType> faceLocationsUL =
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nAddPoints++;
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vtkUList
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}
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(
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}
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faceLocations,
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}
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sizing.sizeInternal(foamVtuSizing::slotType::FACES_OFFSETS)
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);
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// Set size of additional point addressing array
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// (from added point to original cell)
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addPointCellLabels.setSize(nAddPoints);
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// Set size of additional cells mapping array
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sizing.populateInternal
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// (from added cell to original cell)
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(
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mesh,
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cellTypesUL,
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cellsUL,
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cellLocationsUL,
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facesUL,
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faceLocationsUL,
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static_cast<foamVtkMeshMaps&>(vtuData)
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);
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cellMap.setSize(mesh.nCells() + nAddCells);
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// Convert OpenFOAM mesh vertices to VTK
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// Convert OpenFOAM mesh vertices to VTK
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vtkSmartPointer<vtkPoints> vtkpoints = vtkSmartPointer<vtkPoints>::New();
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// - can only do this *after* populating the decompInfo with cell-ids
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// for any additional points (ie, mesh cell-centres)
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vtkSmartPointer<vtkPoints> vtkpoints = vtkmesh->GetPoints();
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if (!vtkpoints)
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{
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// No points previously, add an entry
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vtkpoints = vtkSmartPointer<vtkPoints>::New();
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vtkmesh->SetPoints(vtkpoints);
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}
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vtkpoints->Allocate(mesh.nPoints() + nAddPoints);
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vtkpoints->SetNumberOfPoints(sizing.nFieldPoints());
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const Foam::pointField& points = mesh.points();
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// Normal points
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const pointField& points = mesh.points();
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const labelList& addPoints = vtuData.additionalIds();
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label pointi = 0;
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forAll(points, i)
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forAll(points, i)
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{
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{
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vtkpoints->InsertNextPoint(points[i].v_);
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vtkpoints->SetPoint(pointi++, points[i].v_);
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}
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forAll(addPoints, i)
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{
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vtkpoints->SetPoint(pointi++, mesh.C()[addPoints[i]].v_);
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}
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}
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vtkmesh->Allocate(mesh.nCells() + nAddCells);
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if (facesUL.size())
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// Set counters for additional points and additional cells
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label addPointi = 0, addCelli = 0;
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// Create storage for points - needed for mapping from OpenFOAM to VTK
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// data types - max 'order' = hex = 8 points
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vtkIdType nodeIds[8];
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// face-stream for a polyhedral cell
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// [numFace0Pts, id1, id2, id3, numFace1Pts, id1, id2, id3, ...]
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DynamicList<vtkIdType> faceStream(256);
|
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|
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forAll(cellShapes, celli)
|
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{
|
{
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const cellShape& cellShape = cellShapes[celli];
|
vtkmesh->SetCells
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const cellModel& cellModel = cellShape.model();
|
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|
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cellMap[addCelli++] = celli;
|
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|
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if (cellModel == tet)
|
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{
|
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for (int j = 0; j < 4; j++)
|
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{
|
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nodeIds[j] = cellShape[j];
|
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}
|
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vtkmesh->InsertNextCell
|
|
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(
|
(
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VTK_TETRA,
|
cellTypes,
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4,
|
cellLocations,
|
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nodeIds
|
cells,
|
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|
faceLocations,
|
||||||
|
faces
|
||||||
);
|
);
|
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}
|
}
|
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else if (cellModel == pyr)
|
|
||||||
{
|
|
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for (int j = 0; j < 5; j++)
|
|
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{
|
|
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nodeIds[j] = cellShape[j];
|
|
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}
|
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vtkmesh->InsertNextCell
|
|
||||||
(
|
|
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VTK_PYRAMID,
|
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5,
|
|
||||||
nodeIds
|
|
||||||
);
|
|
||||||
}
|
|
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else if (cellModel == prism)
|
|
||||||
{
|
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// VTK has a different node order for VTK_WEDGE
|
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// their triangles point outwards!
|
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nodeIds[0] = cellShape[0];
|
|
||||||
nodeIds[1] = cellShape[2];
|
|
||||||
nodeIds[2] = cellShape[1];
|
|
||||||
nodeIds[3] = cellShape[3];
|
|
||||||
nodeIds[4] = cellShape[5];
|
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||||||
nodeIds[5] = cellShape[4];
|
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||||||
|
|
||||||
vtkmesh->InsertNextCell
|
|
||||||
(
|
|
||||||
VTK_WEDGE,
|
|
||||||
6,
|
|
||||||
nodeIds
|
|
||||||
);
|
|
||||||
}
|
|
||||||
else if (cellModel == tetWedge && !reader_->GetUseVTKPolyhedron())
|
|
||||||
{
|
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||||||
// Treat as squeezed prism (VTK_WEDGE)
|
|
||||||
|
|
||||||
nodeIds[0] = cellShape[0];
|
|
||||||
nodeIds[1] = cellShape[2];
|
|
||||||
nodeIds[2] = cellShape[1];
|
|
||||||
nodeIds[3] = cellShape[3];
|
|
||||||
nodeIds[4] = cellShape[4];
|
|
||||||
nodeIds[5] = cellShape[3];
|
|
||||||
|
|
||||||
vtkmesh->InsertNextCell
|
|
||||||
(
|
|
||||||
VTK_WEDGE,
|
|
||||||
6,
|
|
||||||
nodeIds
|
|
||||||
);
|
|
||||||
}
|
|
||||||
else if (cellModel == wedge)
|
|
||||||
{
|
|
||||||
// Treat as squeezed hex
|
|
||||||
|
|
||||||
nodeIds[0] = cellShape[0];
|
|
||||||
nodeIds[1] = cellShape[1];
|
|
||||||
nodeIds[2] = cellShape[2];
|
|
||||||
nodeIds[3] = cellShape[2];
|
|
||||||
nodeIds[4] = cellShape[3];
|
|
||||||
nodeIds[5] = cellShape[4];
|
|
||||||
nodeIds[6] = cellShape[5];
|
|
||||||
nodeIds[7] = cellShape[6];
|
|
||||||
|
|
||||||
vtkmesh->InsertNextCell
|
|
||||||
(
|
|
||||||
VTK_HEXAHEDRON,
|
|
||||||
8,
|
|
||||||
nodeIds
|
|
||||||
);
|
|
||||||
}
|
|
||||||
else if (cellModel == hex)
|
|
||||||
{
|
|
||||||
for (int j = 0; j < 8; j++)
|
|
||||||
{
|
|
||||||
nodeIds[j] = cellShape[j];
|
|
||||||
}
|
|
||||||
vtkmesh->InsertNextCell
|
|
||||||
(
|
|
||||||
VTK_HEXAHEDRON,
|
|
||||||
8,
|
|
||||||
nodeIds
|
|
||||||
);
|
|
||||||
}
|
|
||||||
else if (reader_->GetUseVTKPolyhedron())
|
|
||||||
{
|
|
||||||
// Polyhedral cell - use VTK_POLYHEDRON
|
|
||||||
const labelList& cFaces = mesh.cells()[celli];
|
|
||||||
|
|
||||||
vtkIdType nFaces = cFaces.size();
|
|
||||||
vtkIdType nLabels = nFaces;
|
|
||||||
|
|
||||||
// count size for face stream
|
|
||||||
forAll(cFaces, cFacei)
|
|
||||||
{
|
|
||||||
const face& f = mesh.faces()[cFaces[cFacei]];
|
|
||||||
nLabels += f.size();
|
|
||||||
}
|
|
||||||
|
|
||||||
// build face-stream
|
|
||||||
// [numFace0Pts, id1, id2, id3, numFace1Pts, id1, id2, id3, ...]
|
|
||||||
// point Ids are global
|
|
||||||
faceStream.clear();
|
|
||||||
faceStream.reserve(nLabels + nFaces);
|
|
||||||
|
|
||||||
forAll(cFaces, cFacei)
|
|
||||||
{
|
|
||||||
const face& f = mesh.faces()[cFaces[cFacei]];
|
|
||||||
const bool isOwner = (owner[cFaces[cFacei]] == celli);
|
|
||||||
const label nFacePoints = f.size();
|
|
||||||
|
|
||||||
// number of labels for this face
|
|
||||||
faceStream.append(nFacePoints);
|
|
||||||
|
|
||||||
if (isOwner)
|
|
||||||
{
|
|
||||||
forAll(f, fp)
|
|
||||||
{
|
|
||||||
faceStream.append(f[fp]);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
else
|
else
|
||||||
{
|
{
|
||||||
// fairly immaterial if we reverse the list
|
vtkmesh->SetCells
|
||||||
// or use face::reverseFace()
|
|
||||||
forAllReverse(f, fp)
|
|
||||||
{
|
|
||||||
faceStream.append(f[fp]);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
vtkmesh->InsertNextCell(VTK_POLYHEDRON, nFaces, faceStream.data());
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
// Polyhedral cell. Decompose into tets + prisms.
|
|
||||||
|
|
||||||
// Mapping from additional point to cell
|
|
||||||
addPointCellLabels[addPointi] = celli;
|
|
||||||
|
|
||||||
// The new vertex from the cell-centre
|
|
||||||
const label newVertexLabel = mesh.nPoints() + addPointi;
|
|
||||||
vtkpoints->InsertNextPoint(mesh.C()[celli].v_);
|
|
||||||
|
|
||||||
// Whether to insert cell in place of original or not.
|
|
||||||
bool substituteCell = true;
|
|
||||||
|
|
||||||
const labelList& cFaces = mesh.cells()[celli];
|
|
||||||
forAll(cFaces, cFacei)
|
|
||||||
{
|
|
||||||
const face& f = mesh.faces()[cFaces[cFacei]];
|
|
||||||
const bool isOwner = (owner[cFaces[cFacei]] == celli);
|
|
||||||
|
|
||||||
// Number of triangles and quads in decomposition
|
|
||||||
label nTris = 0;
|
|
||||||
label nQuads = 0;
|
|
||||||
f.nTrianglesQuads(mesh.points(), nTris, nQuads);
|
|
||||||
|
|
||||||
// Do actual decomposition into triFcs and quadFcs.
|
|
||||||
faceList triFcs(nTris);
|
|
||||||
faceList quadFcs(nQuads);
|
|
||||||
label trii = 0;
|
|
||||||
label quadi = 0;
|
|
||||||
f.trianglesQuads(mesh.points(), trii, quadi, triFcs, quadFcs);
|
|
||||||
|
|
||||||
forAll(quadFcs, quadI)
|
|
||||||
{
|
|
||||||
if (substituteCell)
|
|
||||||
{
|
|
||||||
substituteCell = false;
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
cellMap[addCelli++] = celli;
|
|
||||||
}
|
|
||||||
|
|
||||||
const face& quad = quadFcs[quadI];
|
|
||||||
|
|
||||||
// Ensure we have the correct orientation for the
|
|
||||||
// base of the primitive cell shape.
|
|
||||||
// If the cell is face owner, the orientation needs to be
|
|
||||||
// flipped.
|
|
||||||
// At the moment, VTK doesn't actually seem to care if
|
|
||||||
// negative cells are defined, but we'll do it anyhow
|
|
||||||
// (for safety).
|
|
||||||
if (isOwner)
|
|
||||||
{
|
|
||||||
nodeIds[0] = quad[3];
|
|
||||||
nodeIds[1] = quad[2];
|
|
||||||
nodeIds[2] = quad[1];
|
|
||||||
nodeIds[3] = quad[0];
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
nodeIds[0] = quad[0];
|
|
||||||
nodeIds[1] = quad[1];
|
|
||||||
nodeIds[2] = quad[2];
|
|
||||||
nodeIds[3] = quad[3];
|
|
||||||
}
|
|
||||||
nodeIds[4] = newVertexLabel;
|
|
||||||
vtkmesh->InsertNextCell
|
|
||||||
(
|
(
|
||||||
VTK_PYRAMID,
|
cellTypes,
|
||||||
5,
|
cellLocations,
|
||||||
nodeIds
|
cells,
|
||||||
|
nullptr,
|
||||||
|
nullptr
|
||||||
);
|
);
|
||||||
}
|
}
|
||||||
|
|
||||||
forAll(triFcs, triI)
|
|
||||||
{
|
|
||||||
if (substituteCell)
|
|
||||||
{
|
|
||||||
substituteCell = false;
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
cellMap[addCelli++] = celli;
|
|
||||||
}
|
|
||||||
|
|
||||||
const face& tri = triFcs[triI];
|
|
||||||
|
|
||||||
// See note above about the orientation.
|
|
||||||
if (isOwner)
|
|
||||||
{
|
|
||||||
nodeIds[0] = tri[2];
|
|
||||||
nodeIds[1] = tri[1];
|
|
||||||
nodeIds[2] = tri[0];
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
nodeIds[0] = tri[0];
|
|
||||||
nodeIds[1] = tri[1];
|
|
||||||
nodeIds[2] = tri[2];
|
|
||||||
}
|
|
||||||
nodeIds[3] = newVertexLabel;
|
|
||||||
|
|
||||||
vtkmesh->InsertNextCell
|
|
||||||
(
|
|
||||||
VTK_TETRA,
|
|
||||||
4,
|
|
||||||
nodeIds
|
|
||||||
);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
addPointi++;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
vtkmesh->SetPoints(vtkpoints);
|
|
||||||
|
|
||||||
if (debug)
|
if (debug)
|
||||||
{
|
{
|
||||||
Info<<"nCells=" << mesh.nCells() <<" nPoints=" << mesh.nPoints()
|
Info<< "<end> " << FUNCTION_NAME << endl;
|
||||||
<<" nAddCells=" << nAddCells <<" nAddPoints=" << nAddPoints
|
|
||||||
<< nl
|
|
||||||
<< "<end> volumeVTKMesh" << endl;
|
|
||||||
printMemory();
|
printMemory();
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|||||||
Reference in New Issue
Block a user