923 lines
40 KiB
C++
923 lines
40 KiB
C++
/***************************************************************************
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* Copyright (c) 2009 Jürgen Riegel <juergen.riegel@web.de> *
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* Copyright (c) 2017 Qingfeng Xia <qingfeng.xia at oxford uni> *
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* *
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* This file is part of the FreeCAD CAx development system. *
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* *
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* This library is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU Library General Public *
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* License as published by the Free Software Foundation; either *
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* version 2 of the License, or (at your option) any later version. *
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* *
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* This library is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU Library General Public License for more details. *
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* *
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* You should have received a copy of the GNU Library General Public *
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* License along with this library; see the file COPYING.LIB. If not, *
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* write to the Free Software Foundation, Inc., 59 Temple Place, *
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* Suite 330, Boston, MA 02111-1307, USA *
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* *
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***************************************************************************/
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#include "PreCompiled.h"
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#ifndef _PreComp_
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# include <Python.h>
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# include <cstdlib>
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# include <memory>
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# include <cmath>
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# include <map>
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# include <Bnd_Box.hxx>
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# include <BRep_Tool.hxx>
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# include <BRepBndLib.hxx>
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# include <BRepExtrema_DistShapeShape.hxx>
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# include <TopoDS_Vertex.hxx>
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# include <BRepBuilderAPI_MakeVertex.hxx>
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# include <gp_Pnt.hxx>
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# include <TopoDS_Face.hxx>
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# include <TopoDS_Solid.hxx>
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# include <TopoDS_Shape.hxx>
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# include <SMESH_Gen.hxx>
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# include <SMESH_Mesh.hxx>
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# include <SMDS_VolumeTool.hxx>
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# include <SMESHDS_Mesh.hxx>
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# include <vtkDataSetReader.h>
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# include <vtkDataSetWriter.h>
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# include <vtkStructuredGrid.h>
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# include <vtkImageData.h>
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# include <vtkRectilinearGrid.h>
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# include <vtkUnstructuredGrid.h>
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# include <vtkXMLUnstructuredGridReader.h>
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# include <vtkXMLUnstructuredGridWriter.h>
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# include <vtkPointData.h>
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# include <vtkCellData.h>
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# include <vtkCellArray.h>
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# include <vtkDataArray.h>
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# include <vtkDoubleArray.h>
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# include <vtkIdList.h>
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# include <vtkCellTypes.h>
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# include <vtkTriangle.h>
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# include <vtkQuad.h>
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# include <vtkQuadraticTriangle.h>
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# include <vtkQuadraticQuad.h>
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# include <vtkTetra.h>
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# include <vtkPyramid.h>
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# include <vtkWedge.h>
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# include <vtkHexahedron.h>
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# include <vtkQuadraticTetra.h>
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# include <vtkQuadraticPyramid.h>
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# include <vtkQuadraticWedge.h>
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# include <vtkQuadraticHexahedron.h>
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#endif
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#include <Base/FileInfo.h>
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#include <Base/TimeInfo.h>
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#include <Base/Console.h>
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#include <Base/Type.h>
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#include <Base/Parameter.h>
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#include <App/Application.h>
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#include <App/Document.h>
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#include <App/DocumentObject.h>
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#include "FemVTKTools.h"
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#include "FemMeshProperty.h"
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#include "FemAnalysis.h"
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#include "FemResultObject.h"
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namespace Fem
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{
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template<class TReader> vtkDataSet* readVTKFile(const char*fileName)
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{
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vtkSmartPointer<TReader> reader =
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vtkSmartPointer<TReader>::New();
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reader->SetFileName(fileName);
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reader->Update();
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auto output = reader->GetOutput();
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if (output)
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output->Register(reader);
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return vtkDataSet::SafeDownCast(output);
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}
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template<class TWriter> void writeVTKFile(const char* filename, vtkSmartPointer<vtkUnstructuredGrid> dataset)
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{
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vtkSmartPointer<TWriter> writer =
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vtkSmartPointer<TWriter>::New();
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writer->SetFileName(filename);
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writer->SetInputData(dataset);
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writer->Write();
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}
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void FemVTKTools::importVTKMesh(vtkSmartPointer<vtkDataSet> dataset, FemMesh* mesh, float scale)
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{
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const vtkIdType nPoints = dataset->GetNumberOfPoints();
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const vtkIdType nCells = dataset->GetNumberOfCells();
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Base::Console().Log("%d nodes/points and %d cells/elements found!\n", nPoints, nCells);
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Base::Console().Log("Build SMESH mesh out of the vtk mesh data.\n", nPoints, nCells);
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//vtkSmartPointer<vtkCellArray> cells = dataset->GetCells(); // works only for vtkUnstructuredGrid
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vtkSmartPointer<vtkIdList> idlist= vtkSmartPointer<vtkIdList>::New();
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//Now fill the SMESH datastructure
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SMESH_Mesh* smesh = const_cast<SMESH_Mesh*>(mesh->getSMesh());
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SMESHDS_Mesh* meshds = smesh->GetMeshDS();
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meshds->ClearMesh();
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for(vtkIdType i=0; i<nPoints; i++)
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{
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double* p = dataset->GetPoint(i);
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meshds->AddNodeWithID(p[0]*scale, p[1]*scale, p[2]*scale, i+1);
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}
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for(vtkIdType iCell=0; iCell<nCells; iCell++)
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{
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idlist->Reset();
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idlist = dataset->GetCell(iCell)->GetPointIds();
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vtkIdType *ids = idlist->GetPointer(0);
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switch(dataset->GetCellType(iCell))
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{
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// 2D faces
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case VTK_TRIANGLE: // tria3
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meshds->AddFaceWithID(ids[0]+1, ids[1]+1, ids[2]+1, iCell+1);
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break;
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case VTK_QUADRATIC_TRIANGLE: // tria6
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meshds->AddFaceWithID(ids[0]+1, ids[1]+1, ids[2]+1, ids[3]+1, ids[4]+1, ids[5]+1, iCell+1);
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break;
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case VTK_QUAD: // quad4
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meshds->AddFaceWithID(ids[0]+1, ids[1]+1, ids[2]+1, ids[3]+1, iCell+1);
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break;
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case VTK_QUADRATIC_QUAD: // quad8
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meshds->AddFaceWithID(ids[0]+1, ids[1]+1, ids[2]+1, ids[3]+1, ids[4]+1, ids[5]+1, ids[6]+1, ids[7]+1, iCell+1);
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break;
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// 3D volumes
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case VTK_TETRA: // tetra4
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meshds->AddVolumeWithID(ids[0]+1, ids[1]+1, ids[2]+1, ids[3]+1, iCell+1);
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break;
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case VTK_QUADRATIC_TETRA: // tetra10
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meshds->AddVolumeWithID(ids[0]+1, ids[1]+1, ids[2]+1, ids[3]+1, ids[4]+1, ids[5]+1, ids[6]+1, ids[7]+1, ids[8]+1, ids[9]+1, iCell+1);
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break;
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case VTK_HEXAHEDRON: // hexa8
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meshds->AddVolumeWithID(ids[0]+1, ids[1]+1, ids[2]+1, ids[3]+1, ids[4]+1, ids[5]+1, ids[6]+1, ids[7]+1, iCell+1);
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break;
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case VTK_QUADRATIC_HEXAHEDRON: // hexa20
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meshds->AddVolumeWithID(ids[0]+1, ids[1]+1, ids[2]+1, ids[3]+1, ids[4]+1, ids[5]+1, ids[6]+1, ids[7]+1, ids[8]+1, ids[9]+1,\
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ids[10]+1, ids[11]+1, ids[12]+1, ids[13]+1, ids[14]+1, ids[15]+1, ids[16]+1, ids[17]+1, ids[18]+1, ids[19]+1,\
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iCell+1);
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break;
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case VTK_WEDGE: // penta6
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meshds->AddVolumeWithID(ids[0]+1, ids[1]+1, ids[2]+1, ids[3]+1, ids[4]+1, ids[5]+1, iCell+1);
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break;
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case VTK_QUADRATIC_WEDGE: // penta15
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meshds->AddVolumeWithID(ids[0]+1, ids[1]+1, ids[2]+1, ids[3]+1, ids[4]+1, ids[5]+1, ids[6]+1, ids[7]+1, ids[8]+1, ids[9]+1,\
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ids[10]+1, ids[11]+1, ids[12]+1, ids[13]+1, ids[14]+1,\
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iCell+1);
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break;
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case VTK_PYRAMID: // pyra5
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meshds->AddVolumeWithID(ids[0]+1, ids[1]+1, ids[2]+1, ids[3]+1, ids[4]+1, iCell+1);
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break;
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case VTK_QUADRATIC_PYRAMID: // pyra13
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meshds->AddVolumeWithID(ids[0]+1, ids[1]+1, ids[2]+1, ids[3]+1, ids[4]+1, ids[5]+1, ids[6]+1, ids[7]+1, ids[8]+1, ids[9]+1,\
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ids[10]+1, ids[11]+1, ids[12]+1,\
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iCell+1);
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break;
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// not handled cases
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default:
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{
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Base::Console().Error("Only common 2D and 3D Cells are supported in VTK mesh import\n");
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break;
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}
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}
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}
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}
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FemMesh* FemVTKTools::readVTKMesh(const char* filename, FemMesh* mesh)
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{
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Base::TimeInfo Start;
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Base::Console().Log("Start: read FemMesh from VTK unstructuredGrid ======================\n");
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Base::FileInfo f(filename);
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if(f.hasExtension("vtu"))
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{
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vtkSmartPointer<vtkDataSet> dataset = readVTKFile<vtkXMLUnstructuredGridReader>(filename);
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if (!dataset.Get()) {
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Base::Console().Error("Failed to load file %s\n", filename);
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return nullptr;
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}
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importVTKMesh(dataset, mesh);
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}
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else if(f.hasExtension("vtk"))
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{
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vtkSmartPointer<vtkDataSet> dataset = readVTKFile<vtkDataSetReader>(filename);
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if (!dataset.Get()) {
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Base::Console().Error("Failed to load file %s\n", filename);
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return nullptr;
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}
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importVTKMesh(dataset, mesh);
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}
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else
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{
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Base::Console().Error("file name extension is not supported\n");
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return nullptr;
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}
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//Mesh should link to the part feature, in order to set up FemConstraint
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Base::Console().Log(" %f: Done \n",Base::TimeInfo::diffTimeF(Start,Base::TimeInfo()));
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return mesh;
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}
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void exportFemMeshFaces(vtkSmartPointer<vtkUnstructuredGrid> grid, const SMDS_FaceIteratorPtr& aFaceIter)
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{
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Base::Console().Log(" Start: VTK mesh builder faces.\n");
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vtkSmartPointer<vtkCellArray> triangleArray = vtkSmartPointer<vtkCellArray>::New();
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vtkSmartPointer<vtkCellArray> quadTriangleArray = vtkSmartPointer<vtkCellArray>::New();
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vtkSmartPointer<vtkCellArray> quadArray = vtkSmartPointer<vtkCellArray>::New();
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vtkSmartPointer<vtkCellArray> quadQuadArray = vtkSmartPointer<vtkCellArray>::New();
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for (;aFaceIter->more();)
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{
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const SMDS_MeshFace* aFace = aFaceIter->next();
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//triangle
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if(aFace->NbNodes() == 3)
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{
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vtkSmartPointer<vtkTriangle> tria = vtkSmartPointer<vtkTriangle>::New();
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tria->GetPointIds()->SetId(0, aFace->GetNode(0)->GetID()-1);
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tria->GetPointIds()->SetId(1, aFace->GetNode(1)->GetID()-1);
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tria->GetPointIds()->SetId(2, aFace->GetNode(2)->GetID()-1);
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triangleArray->InsertNextCell(tria);
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}
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//quad
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else if(aFace->NbNodes() == 4)
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{
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vtkSmartPointer<vtkQuad> quad = vtkSmartPointer<vtkQuad>::New();
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quad->GetPointIds()->SetId(0, aFace->GetNode(0)->GetID()-1);
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quad->GetPointIds()->SetId(1, aFace->GetNode(1)->GetID()-1);
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quad->GetPointIds()->SetId(2, aFace->GetNode(2)->GetID()-1);
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quad->GetPointIds()->SetId(3, aFace->GetNode(3)->GetID()-1);
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quadArray->InsertNextCell(quad);
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}
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//quadratic triangle
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else if (aFace->NbNodes() == 6)
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{
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vtkSmartPointer<vtkQuadraticTriangle> tria = vtkSmartPointer<vtkQuadraticTriangle>::New();
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tria->GetPointIds()->SetId(0, aFace->GetNode(0)->GetID()-1);
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tria->GetPointIds()->SetId(1, aFace->GetNode(1)->GetID()-1);
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tria->GetPointIds()->SetId(2, aFace->GetNode(2)->GetID()-1);
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tria->GetPointIds()->SetId(3, aFace->GetNode(3)->GetID()-1);
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tria->GetPointIds()->SetId(4, aFace->GetNode(4)->GetID()-1);
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tria->GetPointIds()->SetId(5, aFace->GetNode(5)->GetID()-1);
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quadTriangleArray->InsertNextCell(tria);
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}
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//quadratic quad
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else if(aFace->NbNodes() == 8)
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{
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vtkSmartPointer<vtkQuadraticQuad> quad = vtkSmartPointer<vtkQuadraticQuad>::New();
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quad->GetPointIds()->SetId(0, aFace->GetNode(0)->GetID()-1);
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quad->GetPointIds()->SetId(1, aFace->GetNode(1)->GetID()-1);
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quad->GetPointIds()->SetId(2, aFace->GetNode(2)->GetID()-1);
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quad->GetPointIds()->SetId(3, aFace->GetNode(3)->GetID()-1);
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quad->GetPointIds()->SetId(4, aFace->GetNode(4)->GetID()-1);
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quad->GetPointIds()->SetId(5, aFace->GetNode(5)->GetID()-1);
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quad->GetPointIds()->SetId(6, aFace->GetNode(6)->GetID()-1);
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quad->GetPointIds()->SetId(7, aFace->GetNode(7)->GetID()-1);
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quadQuadArray->InsertNextCell(quad);
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}
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else
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{
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throw std::runtime_error("Face not yet supported by FreeCAD's VTK mesh builder\n");
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}
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}
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if(triangleArray->GetNumberOfCells()>0)
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grid->SetCells(VTK_TRIANGLE, triangleArray);
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if(quadArray->GetNumberOfCells()>0)
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grid->SetCells(VTK_QUAD, quadArray);
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if(quadTriangleArray->GetNumberOfCells()>0)
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grid->SetCells(VTK_QUADRATIC_TRIANGLE, quadTriangleArray);
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if(quadQuadArray->GetNumberOfCells()>0)
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grid->SetCells(VTK_QUADRATIC_QUAD, quadQuadArray);
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Base::Console().Log(" End: VTK mesh builder faces.\n");
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}
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void exportFemMeshCells(vtkSmartPointer<vtkUnstructuredGrid> grid, const SMDS_VolumeIteratorPtr& aVolIter)
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{
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Base::Console().Log(" Start: VTK mesh builder volumes.\n");
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vtkSmartPointer<vtkCellArray> tetraArray = vtkSmartPointer<vtkCellArray>::New();
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vtkSmartPointer<vtkCellArray> pyramidArray = vtkSmartPointer<vtkCellArray>::New();
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vtkSmartPointer<vtkCellArray> wedgeArray = vtkSmartPointer<vtkCellArray>::New();
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vtkSmartPointer<vtkCellArray> hexaArray = vtkSmartPointer<vtkCellArray>::New();
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vtkSmartPointer<vtkCellArray> quadTetraArray = vtkSmartPointer<vtkCellArray>::New();
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vtkSmartPointer<vtkCellArray> quadPyramidArray = vtkSmartPointer<vtkCellArray>::New();
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vtkSmartPointer<vtkCellArray> quadWedgeArray = vtkSmartPointer<vtkCellArray>::New();
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vtkSmartPointer<vtkCellArray> quadHexaArray = vtkSmartPointer<vtkCellArray>::New();
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for (;aVolIter->more();)
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{
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const SMDS_MeshVolume* aVol = aVolIter->next();
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if (aVol->NbNodes() == 4) { // tetra4
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Base::Console().Log(" Volume tetra4\n");
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vtkSmartPointer<vtkTetra> cell = vtkSmartPointer<vtkTetra>::New();
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cell->GetPointIds()->SetId(0, aVol->GetNode(0)->GetID()-1);
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cell->GetPointIds()->SetId(1, aVol->GetNode(1)->GetID()-1);
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cell->GetPointIds()->SetId(2, aVol->GetNode(2)->GetID()-1);
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cell->GetPointIds()->SetId(3, aVol->GetNode(3)->GetID()-1);
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tetraArray->InsertNextCell(cell);
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}
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else if (aVol->NbNodes() == 5) { // pyra5
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Base::Console().Log(" Volume pyra5\n");
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vtkSmartPointer<vtkPyramid> cell = vtkSmartPointer<vtkPyramid>::New();
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cell->GetPointIds()->SetId(0, aVol->GetNode(0)->GetID()-1);
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cell->GetPointIds()->SetId(1, aVol->GetNode(1)->GetID()-1);
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cell->GetPointIds()->SetId(2, aVol->GetNode(2)->GetID()-1);
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cell->GetPointIds()->SetId(3, aVol->GetNode(3)->GetID()-1);
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cell->GetPointIds()->SetId(4, aVol->GetNode(4)->GetID()-1);
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pyramidArray->InsertNextCell(cell);
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}
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else if (aVol->NbNodes() == 6) { // penta6
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Base::Console().Log(" Volume penta6\n");
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vtkSmartPointer<vtkWedge> cell = vtkSmartPointer<vtkWedge>::New();
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cell->GetPointIds()->SetId(0, aVol->GetNode(0)->GetID()-1);
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cell->GetPointIds()->SetId(1, aVol->GetNode(1)->GetID()-1);
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cell->GetPointIds()->SetId(2, aVol->GetNode(2)->GetID()-1);
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cell->GetPointIds()->SetId(3, aVol->GetNode(3)->GetID()-1);
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cell->GetPointIds()->SetId(4, aVol->GetNode(4)->GetID()-1);
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cell->GetPointIds()->SetId(5, aVol->GetNode(5)->GetID()-1);
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wedgeArray->InsertNextCell(cell);
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}
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else if (aVol->NbNodes() == 8) { // hexa8
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Base::Console().Log(" Volume hexa8\n");
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vtkSmartPointer<vtkHexahedron> cell = vtkSmartPointer<vtkHexahedron>::New();
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cell->GetPointIds()->SetId(0, aVol->GetNode(0)->GetID()-1);
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cell->GetPointIds()->SetId(1, aVol->GetNode(1)->GetID()-1);
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cell->GetPointIds()->SetId(2, aVol->GetNode(2)->GetID()-1);
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cell->GetPointIds()->SetId(3, aVol->GetNode(3)->GetID()-1);
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cell->GetPointIds()->SetId(4, aVol->GetNode(4)->GetID()-1);
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cell->GetPointIds()->SetId(5, aVol->GetNode(5)->GetID()-1);
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cell->GetPointIds()->SetId(6, aVol->GetNode(6)->GetID()-1);
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cell->GetPointIds()->SetId(7, aVol->GetNode(7)->GetID()-1);
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hexaArray->InsertNextCell(cell);
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}
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else if (aVol->NbNodes() == 10) { // tetra10
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Base::Console().Log(" Volume tetra10\n");
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vtkSmartPointer<vtkQuadraticTetra> tetra = vtkSmartPointer<vtkQuadraticTetra>::New();
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for(int i=0; i<10; i++){
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tetra->GetPointIds()->SetId(i, aVol->GetNode(i)->GetID()-1);
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}
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quadTetraArray->InsertNextCell(tetra);
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}
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else if (aVol->NbNodes() == 13) { // pyra13
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Base::Console().Log(" Volume pyra13\n");
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vtkSmartPointer<vtkQuadraticPyramid> cell = vtkSmartPointer<vtkQuadraticPyramid>::New();
|
|
for(int i=0; i<13; i++){
|
|
cell->GetPointIds()->SetId(i, aVol->GetNode(i)->GetID()-1);
|
|
// Base::Console().Log("node ids: %i\n", aVol->GetNode(i)->GetID()-1);
|
|
}
|
|
quadPyramidArray->InsertNextCell(cell);
|
|
}
|
|
else if (aVol->NbNodes() == 15) { // penta15
|
|
Base::Console().Log(" Volume penta15\n");
|
|
vtkSmartPointer<vtkQuadraticWedge> cell = vtkSmartPointer<vtkQuadraticWedge>::New();
|
|
for(int i=0; i<15; i++){
|
|
cell->GetPointIds()->SetId(i, aVol->GetNode(i)->GetID()-1);
|
|
}
|
|
quadWedgeArray->InsertNextCell(cell);
|
|
}
|
|
else if (aVol->NbNodes() == 20) { // hexa20
|
|
Base::Console().Log(" Volume hexa20\n");
|
|
vtkSmartPointer<vtkQuadraticHexahedron> cell = vtkSmartPointer<vtkQuadraticHexahedron>::New();
|
|
for(int i=0; i<20; i++){
|
|
cell->GetPointIds()->SetId(i, aVol->GetNode(i)->GetID()-1);
|
|
}
|
|
quadHexaArray->InsertNextCell(cell);
|
|
}
|
|
else {
|
|
throw std::runtime_error("Volume not yet supported by FreeCAD's VTK mesh builder\n");
|
|
}
|
|
}
|
|
|
|
if(tetraArray->GetNumberOfCells()>0)
|
|
grid->SetCells(VTK_TETRA, tetraArray);
|
|
|
|
if(pyramidArray->GetNumberOfCells()>0)
|
|
grid->SetCells(VTK_PYRAMID, pyramidArray);
|
|
|
|
if(wedgeArray->GetNumberOfCells()>0)
|
|
grid->SetCells(VTK_WEDGE, wedgeArray);
|
|
|
|
if(hexaArray->GetNumberOfCells()>0)
|
|
grid->SetCells(VTK_HEXAHEDRON, hexaArray);
|
|
|
|
if(quadTetraArray->GetNumberOfCells()>0)
|
|
grid->SetCells(VTK_QUADRATIC_TETRA, quadTetraArray);
|
|
|
|
if(quadPyramidArray->GetNumberOfCells()>0)
|
|
grid->SetCells(VTK_QUADRATIC_PYRAMID, quadPyramidArray);
|
|
|
|
if(quadWedgeArray->GetNumberOfCells()>0)
|
|
grid->SetCells(VTK_QUADRATIC_WEDGE, quadWedgeArray);
|
|
|
|
if(quadHexaArray->GetNumberOfCells()>0)
|
|
grid->SetCells(VTK_QUADRATIC_HEXAHEDRON, quadHexaArray);
|
|
|
|
Base::Console().Log(" End: VTK mesh builder volumes.\n");
|
|
}
|
|
|
|
void FemVTKTools::exportVTKMesh(const FemMesh* mesh, vtkSmartPointer<vtkUnstructuredGrid> grid, float scale)
|
|
{
|
|
|
|
Base::Console().Log("Start: VTK mesh builder ======================\n");
|
|
SMESH_Mesh* smesh = const_cast<SMESH_Mesh*>(mesh->getSMesh());
|
|
SMESHDS_Mesh* meshDS = smesh->GetMeshDS();
|
|
|
|
// nodes
|
|
Base::Console().Log(" Start: VTK mesh builder nodes.\n");
|
|
|
|
vtkSmartPointer<vtkPoints> points = vtkSmartPointer<vtkPoints>::New();
|
|
SMDS_NodeIteratorPtr aNodeIter = meshDS->nodesIterator();
|
|
|
|
while (aNodeIter->more()) {
|
|
const SMDS_MeshNode* node = aNodeIter->next(); // why float, not double?
|
|
double coords[3] = {double(node->X()*scale), double(node->Y()*scale), double(node->Z()*scale)};
|
|
points->InsertPoint(node->GetID()-1, coords);
|
|
// memory is allocated by VTK points size for max node id, not for point count
|
|
// if the SMESH mesh has gaps in node numbering, points without any element assignment will be inserted in these point gaps too
|
|
// this needs to be taken into account on node mapping when FreeCAD FEM results are exported to vtk
|
|
}
|
|
grid->SetPoints(points);
|
|
// nodes debugging
|
|
const SMDS_MeshInfo& info = meshDS->GetMeshInfo();
|
|
Base::Console().Log(" Size of nodes in SMESH grid: %i.\n", info.NbNodes());
|
|
const vtkIdType nNodes = grid->GetNumberOfPoints();
|
|
Base::Console().Log(" Size of nodes in VTK grid: %i.\n", nNodes);
|
|
Base::Console().Log(" End: VTK mesh builder nodes.\n");
|
|
|
|
// faces
|
|
SMDS_FaceIteratorPtr aFaceIter = meshDS->facesIterator();
|
|
exportFemMeshFaces(grid, aFaceIter);
|
|
|
|
// volumes
|
|
SMDS_VolumeIteratorPtr aVolIter = meshDS->volumesIterator();
|
|
exportFemMeshCells(grid, aVolIter);
|
|
|
|
Base::Console().Log("End: VTK mesh builder ======================\n");
|
|
}
|
|
|
|
void FemVTKTools::writeVTKMesh(const char* filename, const FemMesh* mesh)
|
|
{
|
|
|
|
Base::TimeInfo Start;
|
|
Base::Console().Log("Start: write FemMesh from VTK unstructuredGrid ======================\n");
|
|
Base::FileInfo f(filename);
|
|
|
|
vtkSmartPointer<vtkUnstructuredGrid> grid = vtkSmartPointer<vtkUnstructuredGrid>::New();
|
|
exportVTKMesh(mesh, grid);
|
|
//vtkSmartPointer<vtkDataSet> dataset = vtkDataSet::SafeDownCast(grid);
|
|
Base::Console().Log("Start: writing mesh data ======================\n");
|
|
if(f.hasExtension("vtu")){
|
|
writeVTKFile<vtkXMLUnstructuredGridWriter>(filename, grid);
|
|
}
|
|
else if(f.hasExtension("vtk")){
|
|
writeVTKFile<vtkDataSetWriter>(filename, grid);
|
|
}
|
|
else{
|
|
Base::Console().Error("file name extension is not supported to write VTK\n");
|
|
}
|
|
|
|
Base::Console().Log(" %f: Done \n",Base::TimeInfo::diffTimeF(Start, Base::TimeInfo()));
|
|
}
|
|
|
|
|
|
App::DocumentObject* getObjectByType(const Base::Type type)
|
|
{
|
|
App::Document* pcDoc = App::GetApplication().getActiveDocument();
|
|
if(!pcDoc)
|
|
{
|
|
Base::Console().Message("No active document is found thus created\n");
|
|
pcDoc = App::GetApplication().newDocument();
|
|
}
|
|
App::DocumentObject* obj = pcDoc->getActiveObject();
|
|
|
|
if(obj->getTypeId() == type)
|
|
{
|
|
return obj;
|
|
}
|
|
if(obj->getTypeId() == FemAnalysis::getClassTypeId())
|
|
{
|
|
std::vector<App::DocumentObject*> fem = (static_cast<FemAnalysis*>(obj))->Group.getValues();
|
|
for (std::vector<App::DocumentObject*>::iterator it = fem.begin(); it != fem.end(); ++it) {
|
|
if ((*it)->getTypeId().isDerivedFrom(type))
|
|
return static_cast<App::DocumentObject*>(*it); // return the first of that type
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
App::DocumentObject* createObjectByType(const Base::Type type)
|
|
{
|
|
App::Document* pcDoc = App::GetApplication().getActiveDocument();
|
|
if(!pcDoc)
|
|
{
|
|
Base::Console().Message("No active document is found thus created\n");
|
|
pcDoc = App::GetApplication().newDocument();
|
|
}
|
|
App::DocumentObject* obj = pcDoc->getActiveObject();
|
|
|
|
if(obj->getTypeId() == FemAnalysis::getClassTypeId())
|
|
{
|
|
App::DocumentObject* newobj = pcDoc->addObject(type.getName());
|
|
static_cast<FemAnalysis*>(obj)->addObject(newobj);
|
|
return newobj;
|
|
}
|
|
else
|
|
{
|
|
return pcDoc->addObject(type.getName()); // create in the acitive document
|
|
}
|
|
|
|
}
|
|
|
|
|
|
App::DocumentObject* FemVTKTools::readResult(const char* filename, App::DocumentObject* res)
|
|
{
|
|
Base::TimeInfo Start;
|
|
Base::Console().Log("Start: read FemResult with FemMesh from VTK file ======================\n");
|
|
Base::FileInfo f(filename);
|
|
|
|
vtkSmartPointer<vtkDataSet> ds;
|
|
if(f.hasExtension("vtu"))
|
|
{
|
|
ds = readVTKFile<vtkXMLUnstructuredGridReader>(filename);
|
|
}
|
|
else if(f.hasExtension("vtk"))
|
|
{
|
|
ds = readVTKFile<vtkDataSetReader>(filename);
|
|
}
|
|
else
|
|
{
|
|
Base::Console().Error("file name extension is not supported\n");
|
|
}
|
|
|
|
App::Document* pcDoc = App::GetApplication().getActiveDocument();
|
|
if(!pcDoc)
|
|
{
|
|
Base::Console().Message("No active document is found thus created\n");
|
|
pcDoc = App::GetApplication().newDocument();
|
|
}
|
|
App::DocumentObject* obj = pcDoc->getActiveObject();
|
|
|
|
vtkSmartPointer<vtkDataSet> dataset = ds;
|
|
App::DocumentObject* result = nullptr;
|
|
|
|
if (res)
|
|
{
|
|
Base::Console().Message("FemResultObject pointer is NULL, trying to get the active object\n");
|
|
if(obj->getTypeId() == Base::Type::fromName("Fem::FemResultObjectPython"))
|
|
{
|
|
result = obj;
|
|
}
|
|
else
|
|
{
|
|
Base::Console().Message("the active object is not the correct type, do nothing\n");
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
App::DocumentObject* mesh = pcDoc->addObject("Fem::FemMeshObject", "ResultMesh");
|
|
std::unique_ptr<FemMesh> fmesh(new FemMesh());
|
|
importVTKMesh(dataset, fmesh.get());
|
|
static_cast<PropertyFemMesh*>(mesh->getPropertyByName("FemMesh"))->setValuePtr(fmesh.release());
|
|
|
|
if (result)
|
|
{
|
|
// PropertyLink is the property type to store DocumentObject pointer
|
|
App::PropertyLink* link = dynamic_cast<App::PropertyLink*>(result->getPropertyByName("Mesh"));
|
|
if (link)
|
|
link->setValue(mesh);
|
|
|
|
//vtkSmartPointer<vtkPointData> pd = dataset->GetPointData();
|
|
importFreeCADResult(dataset, result);
|
|
}
|
|
|
|
pcDoc->recompute();
|
|
Base::Console().Log(" %f: Done \n", Base::TimeInfo::diffTimeF(Start, Base::TimeInfo()));
|
|
Base::Console().Log("End: read FemResult with FemMesh from VTK file ======================\n");
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
void FemVTKTools::writeResult(const char* filename, const App::DocumentObject* res) {
|
|
if (!res)
|
|
{
|
|
App::Document* pcDoc = App::GetApplication().getActiveDocument();
|
|
if(!pcDoc)
|
|
{
|
|
Base::Console().Message("No active document is found thus do nothing and return\n");
|
|
return;
|
|
}
|
|
res = pcDoc->getActiveObject(); //type checking is done by caller
|
|
}
|
|
if(!res) {
|
|
Base::Console().Error("Result object pointer is invalid and it is not active object");
|
|
return;
|
|
}
|
|
|
|
Base::TimeInfo Start;
|
|
Base::Console().Log("Start: write FemResult to VTK unstructuredGrid dataset =======\n");
|
|
Base::FileInfo f(filename);
|
|
|
|
// mesh
|
|
vtkSmartPointer<vtkUnstructuredGrid> grid = vtkSmartPointer<vtkUnstructuredGrid>::New();
|
|
App::DocumentObject* mesh = static_cast<App::PropertyLink*>(res->getPropertyByName("Mesh"))->getValue();
|
|
const FemMesh& fmesh = static_cast<PropertyFemMesh*>(mesh->getPropertyByName("FemMesh"))->getValue();
|
|
FemVTKTools::exportVTKMesh(&fmesh, grid);
|
|
|
|
Base::Console().Log(" %f: vtk mesh builder finished\n",Base::TimeInfo::diffTimeF(Start, Base::TimeInfo()));
|
|
|
|
// result
|
|
FemVTKTools::exportFreeCADResult(res, grid);
|
|
|
|
//vtkSmartPointer<vtkDataSet> dataset = vtkDataSet::SafeDownCast(grid);
|
|
if(f.hasExtension("vtu")){
|
|
writeVTKFile<vtkXMLUnstructuredGridWriter>(filename, grid);
|
|
}
|
|
else if(f.hasExtension("vtk")){
|
|
writeVTKFile<vtkDataSetWriter>(filename, grid);
|
|
}
|
|
else{
|
|
Base::Console().Error("file name extension is not supported to write VTK\n");
|
|
}
|
|
|
|
Base::Console().Log(" %f: writing result object to vtk finished\n",Base::TimeInfo::diffTimeF(Start, Base::TimeInfo()));
|
|
Base::Console().Log("End: write FemResult to VTK unstructuredGrid dataset =======\n");
|
|
}
|
|
|
|
|
|
std::map<std::string, std::string> _getFreeCADMechResultVectorProperties() {
|
|
// see src/Mod/Fem/femobjects/_FemResultMechanical
|
|
// App::PropertyVectorList will be a list of vectors in vtk
|
|
std::map<std::string, std::string> resFCVecProp;
|
|
resFCVecProp["DisplacementVectors"] = "Displacement";
|
|
// the following three are filled only if there is a reinforced mat object
|
|
// https://forum.freecadweb.org/viewtopic.php?f=18&t=33106&start=70#p296317
|
|
// https://forum.freecadweb.org/viewtopic.php?f=18&t=33106&p=416006#p412800
|
|
resFCVecProp["PS1Vector"] = "Major Principal Stress";
|
|
resFCVecProp["PS2Vector"] = "Intermediate Principal Stress";
|
|
resFCVecProp["PS3Vector"] = "Minor Principal Stress";
|
|
|
|
return resFCVecProp;
|
|
}
|
|
|
|
// see https://forum.freecadweb.org/viewtopic.php?f=18&t=33106&start=30#p277434 for further information regarding names etc...
|
|
// some scalar list are not needed on VTK file export but they are needed for internal VTK pipeline
|
|
// TODO some filter to only export the needed values to VTK file but have all in FreeCAD VTK pipline
|
|
std::map<std::string, std::string> _getFreeCADMechResultScalarProperties() {
|
|
// see src/Mod/Fem/femobjects/_FemResultMechanical
|
|
// App::PropertyFloatList will be a list of scalars in vtk
|
|
std::map<std::string, std::string> resFCScalProp;
|
|
resFCScalProp["DisplacementLengths"] = "Displacement Magnitude"; // can be plotted in Paraview as THE DISPLACEMENT MAGNITUDE
|
|
resFCScalProp["MaxShear"] = "Tresca Stress";
|
|
resFCScalProp["NodeStressXX"] = "Stress xx component";
|
|
resFCScalProp["NodeStressYY"] = "Stress yy component";
|
|
resFCScalProp["NodeStressZZ"] = "Stress zz component";
|
|
resFCScalProp["NodeStressXY"] = "Stress xy component";
|
|
resFCScalProp["NodeStressXZ"] = "Stress xz component";
|
|
resFCScalProp["NodeStressYZ"] = "Stress yz component";
|
|
resFCScalProp["NodeStrainXX"] = "Strain xx component";
|
|
resFCScalProp["NodeStrainYY"] = "Strain yy component";
|
|
resFCScalProp["NodeStrainZZ"] = "Strain zz component";
|
|
resFCScalProp["NodeStrainXY"] = "Strain xy component";
|
|
resFCScalProp["NodeStrainXZ"] = "Strain xz component";
|
|
resFCScalProp["NodeStrainYZ"] = "Strain yz component";
|
|
resFCScalProp["Peeq"] = "Equivalent Plastic Strain";
|
|
// the following three are filled in all cases
|
|
// https://forum.freecadweb.org/viewtopic.php?f=18&t=33106&start=70#p296317
|
|
// it might be these can be generated in paraview from stress tensor values as
|
|
// THE MAJOR PRINCIPAL STRESS MAGNITUDE, THE INTERMEDIATE PRINCIPAL STRESS MAGNITUDE, THE MINOR PRINCIPAL STRESS MAGNITUDE
|
|
// but I do not know how (Bernd), for some help see paraview tutorial on FreeCAD wiki
|
|
// thus TODO they might not be exported to external file format (first I need to know how to generate them in paraview)
|
|
// but there are needed anyway because the pipline in FreeCAD needs the principal stress values
|
|
// https://forum.freecadweb.org/viewtopic.php?f=18&t=33106&p=416006#p412800
|
|
resFCScalProp["PrincipalMax"] = "Major Principal Stress";
|
|
resFCScalProp["PrincipalMed"] = "Intermediate Principal Stress";
|
|
resFCScalProp["PrincipalMin"] = "Minor Principal Stress";
|
|
resFCScalProp["vonMises"] = "von Mises Stress";
|
|
resFCScalProp["Temperature"] = "Temperature";
|
|
resFCScalProp["MohrCoulomb"] = "MohrCoulomb";
|
|
resFCScalProp["ReinforcementRatio_x"] = "ReinforcementRatio_x";
|
|
resFCScalProp["ReinforcementRatio_y"] = "ReinforcementRatio_y";
|
|
resFCScalProp["ReinforcementRatio_z"] = "ReinforcementRatio_z";
|
|
|
|
resFCScalProp["UserDefined"] = "UserDefinedMyName"; // this is empty or am I wrong ?!
|
|
resFCScalProp["MassFlowRate"] = "Mass Flow Rate";
|
|
resFCScalProp["NetworkPressure"] = "Network Pressure";
|
|
|
|
return resFCScalProp;
|
|
}
|
|
|
|
|
|
void FemVTKTools::importFreeCADResult(vtkSmartPointer<vtkDataSet> dataset, App::DocumentObject* result) {
|
|
Base::Console().Log("Start: import vtk result file data into a FreeCAD result object.\n");
|
|
|
|
std::map<std::string, std::string> vectors = _getFreeCADMechResultVectorProperties();
|
|
std::map<std::string, std::string> scalars = _getFreeCADMechResultScalarProperties();
|
|
|
|
double ts = 0.0; // t=0.0 for static simulation
|
|
static_cast<App::PropertyFloat*>(result->getPropertyByName("Time"))->setValue(ts);
|
|
|
|
vtkSmartPointer<vtkPointData> pd = dataset->GetPointData();
|
|
if(pd->GetNumberOfArrays() == 0) {
|
|
Base::Console().Error("No point data array is found in vtk data set, do nothing\n");
|
|
// if pointData is empty, data may be in cellDate, cellData -> pointData interpolation is possible in VTK
|
|
return;
|
|
}
|
|
|
|
// NodeNumbers
|
|
const vtkIdType nPoints = dataset->GetNumberOfPoints();
|
|
std::vector<long> nodeIds(nPoints);
|
|
for(vtkIdType i=0; i<nPoints; ++i) {
|
|
nodeIds[i] = i+1;
|
|
}
|
|
static_cast<App::PropertyIntegerList*>(result->getPropertyByName("NodeNumbers"))->setValues(nodeIds);
|
|
Base::Console().Log(" NodeNumbers have been filled with values.\n");
|
|
|
|
// vectors
|
|
for (std::map<std::string, std::string>::iterator it = vectors.begin(); it != vectors.end(); ++it) {
|
|
int dim = 3; // Fixme: currently 3D only, here we could run into trouble, FreeCAD only supports dim 3D, I do not know about VTK
|
|
vtkDataArray* vector_field = vtkDataArray::SafeDownCast(pd->GetArray(it->second.c_str()));
|
|
if(vector_field && vector_field->GetNumberOfComponents() == dim) {
|
|
App::PropertyVectorList* vector_list = static_cast<App::PropertyVectorList*>(result->getPropertyByName(it->first.c_str()));
|
|
if(vector_list) {
|
|
std::vector<Base::Vector3d> vec(nPoints);
|
|
for(vtkIdType i=0; i<nPoints; ++i) {
|
|
double *p = vector_field->GetTuple(i); // both vtkFloatArray and vtkDoubleArray return double* for GetTuple(i)
|
|
vec[i] = (Base::Vector3d(p[0], p[1], p[2]));
|
|
}
|
|
// PropertyVectorList will not show up in PropertyEditor
|
|
vector_list->setValues(vec);
|
|
Base::Console().Log(" A PropertyVectorList has been filled with values: %s\n", it->first.c_str());
|
|
}
|
|
else {
|
|
Base::Console().Error("static_cast<App::PropertyVectorList*>((result->getPropertyByName(\"%s\")) failed.\n", it->first.c_str());
|
|
continue;
|
|
}
|
|
}
|
|
else
|
|
Base::Console().Message(" PropertyVectorList NOT found in vkt file data: %s\n", it->first.c_str());
|
|
}
|
|
|
|
// scalars
|
|
for (std::map<std::string, std::string>::iterator it = scalars.begin(); it != scalars.end(); ++it) {
|
|
vtkDataArray* vec = vtkDataArray::SafeDownCast(pd->GetArray(it->second.c_str()));
|
|
if(nPoints && vec && vec->GetNumberOfComponents() == 1) {
|
|
App::PropertyFloatList* field = static_cast<App::PropertyFloatList*>(result->getPropertyByName(it->first.c_str()));
|
|
if (!field) {
|
|
Base::Console().Error("static_cast<App::PropertyFloatList*>((result->getPropertyByName(\"%s\")) failed.\n", it->first.c_str());
|
|
continue;
|
|
}
|
|
|
|
double vmin=1.0e100, vmean=0.0, vmax=-1.0e100;
|
|
std::vector<double> values(nPoints, 0.0);
|
|
for(vtkIdType i = 0; i < vec->GetNumberOfTuples(); i++) {
|
|
double v = *(vec->GetTuple(i));
|
|
values[i] = v;
|
|
vmean += v;
|
|
if(v > vmax) vmax = v;
|
|
if(v < vmin) vmin = v;
|
|
}
|
|
field->setValues(values);
|
|
Base::Console().Log(" A PropertyFloatList has been filled with vales: %s\n", it->first.c_str());
|
|
}
|
|
else
|
|
Base::Console().Message(" PropertyFloatList NOT found in vkt file data %s\n", it->first.c_str());
|
|
}
|
|
|
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// stats
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// stats are added by importVTKResults
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|
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|
Base::Console().Log("End: import vtk result file data into a FreeCAD result object.\n");
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|
}
|
|
|
|
|
|
void FemVTKTools::exportFreeCADResult(const App::DocumentObject* result, vtkSmartPointer<vtkDataSet> grid) {
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Base::Console().Log("Start: Create VTK result data from FreeCAD result data.\n");
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|
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|
std::map<std::string, std::string> vectors = _getFreeCADMechResultVectorProperties();
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|
std::map<std::string, std::string> scalars = _getFreeCADMechResultScalarProperties();
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|
|
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const Fem::FemResultObject* res = static_cast<const Fem::FemResultObject*>(result);
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|
const vtkIdType nPoints = grid->GetNumberOfPoints();
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|
|
|
// we need the corresponding mesh to get the correct id for the result data (when the freecad smesh mesh has gaps in the points
|
|
// vtk has more points. Vtk does not support point gaps, thus the gaps are filled with points. Then the mapping must be correct)
|
|
App::DocumentObject* meshObj = res->Mesh.getValue();
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|
if (!meshObj || !meshObj->isDerivedFrom(FemMeshObject::getClassTypeId())) {
|
|
Base::Console().Error("Result object does not correctly link to mesh");
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|
return;
|
|
}
|
|
SMESH_Mesh* smesh = const_cast<SMESH_Mesh*>(static_cast<FemMeshObject*>(meshObj)->FemMesh.getValue().getSMesh());
|
|
SMESHDS_Mesh* meshDS = smesh->GetMeshDS();
|
|
|
|
// vectors
|
|
for (std::map<std::string, std::string>::iterator it = vectors.begin(); it != vectors.end(); ++it) {
|
|
const int dim=3; //Fixme, detect dim, but FreeCAD PropertyVectorList ATM only has DIM of 3
|
|
App::PropertyVectorList* field = nullptr;
|
|
if (res->getPropertyByName(it->first.c_str()))
|
|
field = static_cast<App::PropertyVectorList*>(res->getPropertyByName(it->first.c_str()));
|
|
else
|
|
Base::Console().Error(" PropertyVectorList not found: %s\n", it->first.c_str());
|
|
|
|
if (field && field->getSize() > 0) {
|
|
//if (nPoints != field->getSize())
|
|
// Base::Console().Error("Size of PropertyVectorList = %d, not equal to vtk mesh node count %d \n", field->getSize(), nPoints);
|
|
const std::vector<Base::Vector3d>& vel = field->getValues();
|
|
vtkSmartPointer<vtkDoubleArray> data = vtkSmartPointer<vtkDoubleArray>::New();
|
|
data->SetNumberOfComponents(dim);
|
|
data->SetNumberOfTuples(nPoints);
|
|
data->SetName(it->second.c_str());
|
|
|
|
//we need to set values for the unused points.
|
|
//TODO: ensure that the result bar does not include the used 0 if it is not part of the result (e.g. does the result bar show 0 as smallest value?)
|
|
if (nPoints != field->getSize()) {
|
|
double tuple[] = {0,0,0};
|
|
for (vtkIdType i=0; i<nPoints; ++i) {
|
|
data->SetTuple(i, tuple);
|
|
}
|
|
}
|
|
|
|
SMDS_NodeIteratorPtr aNodeIter = meshDS->nodesIterator();
|
|
for (std::vector<Base::Vector3d>::const_iterator jt=vel.begin(); jt!=vel.end(); ++jt) {
|
|
const SMDS_MeshNode* node = aNodeIter->next();
|
|
double tuple[] = {jt->x, jt->y, jt->z};
|
|
data->SetTuple(node->GetID()-1, tuple);
|
|
}
|
|
grid->GetPointData()->AddArray(data);
|
|
Base::Console().Log(" The PropertyVectorList %s was exported to VTK vector list: %s\n", it->first.c_str(), it->second.c_str());
|
|
}
|
|
else if (field) {
|
|
Base::Console().Log(" PropertyVectorList NOT exported to vtk: %s size is: %i\n", it->first.c_str(), field->getSize());
|
|
}
|
|
}
|
|
|
|
// scalars
|
|
for (std::map<std::string, std::string>::iterator it = scalars.begin(); it != scalars.end(); ++it) {
|
|
App::PropertyFloatList* field = nullptr;
|
|
if (res->getPropertyByName(it->first.c_str()))
|
|
field = static_cast<App::PropertyFloatList*>(res->getPropertyByName(it->first.c_str()));
|
|
else
|
|
Base::Console().Error("PropertyFloatList %s not found \n", it->first.c_str());
|
|
|
|
if (field && field->getSize() > 0) {
|
|
//if (nPoints != field->getSize())
|
|
// Base::Console().Error("Size of PropertyFloatList = %d, not equal to vtk mesh node count %d \n", field->getSize(), nPoints);
|
|
const std::vector<double>& vec = field->getValues();
|
|
vtkSmartPointer<vtkDoubleArray> data = vtkSmartPointer<vtkDoubleArray>::New();
|
|
data->SetNumberOfValues(nPoints);
|
|
data->SetName(it->second.c_str());
|
|
|
|
//we need to set values for the unused points.
|
|
//TODO: ensure that the result bar does not include the used 0 if it is not part of the result (e.g. does the result bar show 0 as smallest value?)
|
|
if (nPoints != field->getSize()) {
|
|
for (vtkIdType i=0; i<nPoints; ++i) {
|
|
data->SetValue(i, 0);
|
|
}
|
|
}
|
|
|
|
SMDS_NodeIteratorPtr aNodeIter = meshDS->nodesIterator();
|
|
for (size_t i=0; i<vec.size(); ++i) {
|
|
const SMDS_MeshNode* node = aNodeIter->next();
|
|
data->SetValue(node->GetID()-1, vec[i]);
|
|
}
|
|
|
|
grid->GetPointData()->AddArray(data);
|
|
Base::Console().Log(" The PropertyFloatList %s was exported to VTK scalar list: %s\n", it->first.c_str(), it->second.c_str());
|
|
}
|
|
else if (field) {
|
|
Base::Console().Log(" PropertyFloatList NOT exported to vtk: %s size is: %i\n", it->first.c_str(), field->getSize());
|
|
}
|
|
}
|
|
|
|
Base::Console().Log("End: Create VTK result data from FreeCAD result data.\n");
|
|
}
|
|
|
|
} // namespace
|