src/Plugins/MEDReader/IO/vtkELNOSurfaceFilter.cxx

   1 // Copyright (C) 2010-2019  CEA/DEN, EDF R&D
   2 //
   3 // This library is free software; you can redistribute it and/or
   4 // modify it under the terms of the GNU Lesser General Public
   5 // License as published by the Free Software Foundation; either
   6 // version 2.1 of the License, or (at your option) any later version.
   7 //
   8 // This library is distributed in the hope that it will be useful,
   9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11 // Lesser General Public License for more details.
  12 //
  13 // You should have received a copy of the GNU Lesser General Public
  14 // License along with this library; if not, write to the Free Software
  15 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  16 //
  17 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
  18 //
  19
  20 #include "vtkELNOSurfaceFilter.h"
  21 #include "vtkInformation.h"
  22 #include "vtkInformationVector.h"
  23 #include "vtkObjectFactory.h"
  24 #include "vtkPolyDataAlgorithm.h"
  25 #include "vtkPolyData.h"
  26 #include "vtkIdTypeArray.h"
  27 #include "vtkInformationQuadratureSchemeDefinitionVectorKey.h"
  28 #include "vtkQuadratureSchemeDefinition.h"
  29 #include "vtkUnstructuredGrid.h"
  30 #include "vtkPVGeometryFilter.h"
  31 #include "vtkShrinkFilter.h"
  32 #include "vtkSmartPointer.h"
  33 #include "vtkPointData.h"
  34 #include "vtkCellData.h"
  35 #include "vtkIdList.h"
  36
  37 //vtkCxxRevisionMacro(vtkELNOSurfaceFilter, "$Revision$")
  38 //;
  39 vtkStandardNewMacro(vtkELNOSurfaceFilter)
  40 ;
  41
  42 vtkELNOSurfaceFilter::vtkELNOSurfaceFilter()
  43 {
  44 }
  45
  46 vtkELNOSurfaceFilter::~vtkELNOSurfaceFilter()
  47 {
  48 }
  49
  50 int vtkELNOSurfaceFilter::RequestData(vtkInformation *request, vtkInformationVector **input, vtkInformationVector *output)
  51 {
  52   vtkUnstructuredGrid *usgIn=vtkUnstructuredGrid::SafeDownCast(
  53       input[0]->GetInformationObject(0)->Get(vtkDataObject::DATA_OBJECT()));
  54
  55   vtkUnstructuredGrid *usgOut=vtkUnstructuredGrid::SafeDownCast(
  56       output->GetInformationObject(0)->Get(vtkDataObject::DATA_OBJECT()));
  57
  58   vtkIdTypeArray* usg_offsets=vtkIdTypeArray::SafeDownCast(
  59       this->GetInputArrayToProcess(0, input));
  60
  61   if(usgIn==NULL||usg_offsets==NULL||usgOut==NULL)
  62     {
  63     vtkDebugMacro("vtkELNOSurfaceFilter no correctly configured : offsets = " << usg_offsets);
  64     return 1;
  65     }
  66
  67   // first shrink the input
  68   vtkUnstructuredGrid* usgInClone=usgIn->NewInstance();
  69
  70   usgInClone->ShallowCopy(usgIn);
  71
  72   vtkSmartPointer<vtkPVGeometryFilter> geomFilter=vtkSmartPointer<
  73       vtkPVGeometryFilter>::New();
  74   geomFilter->SetInputData(usgInClone);
  75   geomFilter->SetPassThroughCellIds(1);
  76   geomFilter->SetPassThroughPointIds(1);
  77   geomFilter->SetUseOutline(0);
  78   geomFilter->Update();
  79
  80   vtkPolyData* surface=vtkPolyData::SafeDownCast(geomFilter->GetOutput());
  81   vtkIdTypeArray* originalCellIds=vtkIdTypeArray::SafeDownCast(
  82       surface->GetCellData()->GetArray("vtkOriginalCellIds"));
  83   vtkIdTypeArray* originalPointIds=vtkIdTypeArray::SafeDownCast(
  84       surface->GetPointData()->GetArray("vtkOriginalPointIds"));
  85
  86   if( originalCellIds == NULL )
  87   {
  88     vtkErrorMacro("vtkPVGeometryFilter return NULL 'vtkOriginalCellIds' array");
  89     return 0;
  90   }
  91
  92   if(originalPointIds==NULL)
  93   {
  94     vtkErrorMacro("It appears that your dataset is not reduced using vtkPVGeometryFilter (NULL 'vtkOriginalPointIds).\n==================================================================================================\nProbably your dataset is not 3D.\nIf it is not a 3D dataset you are expected to use ELNO Mesh filter instead of ELNO Surface filter.\n==================================================================================================\n");
  95     return 0;
  96   }
  97
  98   vtkSmartPointer<vtkShrinkFilter> shrink=
  99       vtkSmartPointer<vtkShrinkFilter>::New();
 100   shrink->SetInputConnection(geomFilter->GetOutputPort(0));
 101   shrink->SetShrinkFactor(0.9999);
 102   shrink->Update();
 103
 104   vtkUnstructuredGrid* shrinked=shrink->GetOutput();
 105
 106   usgInClone->Delete();
 107
 108   usgOut->ShallowCopy(shrinked);
 109
 110   vtkIdTypeArray* offsets=vtkIdTypeArray::SafeDownCast(
 111       shrinked->GetCellData()->GetArray(usg_offsets->GetName()));
 112
 113   // now copy ELNO data. Start by verifying if it is possible to
 114   // shallow copy the array.
 115   vtkInformation *info=offsets->GetInformation();
 116   vtkInformationQuadratureSchemeDefinitionVectorKey *key=
 117       vtkQuadratureSchemeDefinition::DICTIONARY();
 118   if(!key->Has(info))
 119     {
 120     vtkDebugMacro("Dictionary is not present in array " << offsets->GetName()
 121                   << " " << offsets << " Aborting." );
 122     return 0;
 123     }
 124   int dictSize=key->Size(info);
 125   vtkQuadratureSchemeDefinition **dict=
 126       new vtkQuadratureSchemeDefinition *[dictSize];
 127   key->GetRange(info, dict, 0, 0, dictSize);
 128
 129   vtkIdType ncell=shrinked->GetNumberOfCells();
 130
 131   vtkFieldData* fielddata=usgIn->GetFieldData();
 132   vtkIdList *ids=vtkIdList::New();
 133   vtkIdList *surfaceIds=vtkIdList::New();
 134   vtkIdList *originalIds=vtkIdList::New();
 135   for(int index=0; index<fielddata->GetNumberOfArrays(); index++)
 136     {
 137     vtkDataArray* data=fielddata->GetArray(index);
 138     if(data==NULL)
 139       continue;
 140
 141     vtkInformation* info=data->GetInformation();
 142     const char* arrayOffsetName=info->Get(
 143         vtkQuadratureSchemeDefinition::QUADRATURE_OFFSET_ARRAY_NAME());
 144
 145     if(arrayOffsetName == NULL ||
 146        strcmp(arrayOffsetName, offsets->GetName())!=0)
 147       {
 148       usgOut->GetFieldData()->AddArray(data);
 149
 150       continue;
 151       }
 152
 153     vtkDataArray* newArray=data->NewInstance();
 154     newArray->SetName(data->GetName());
 155     usgOut->GetPointData()->AddArray(newArray);
 156     newArray->SetNumberOfComponents(data->GetNumberOfComponents());
 157     newArray->SetNumberOfTuples(usgOut->GetNumberOfPoints());
 158     newArray->CopyComponentNames(data);
 159     newArray->Delete();
 160
 161     for(vtkIdType cellId=0; cellId<ncell; cellId++)
 162       {
 163       vtkIdType offset=offsets->GetValue(cellId);
 164
 165       vtkIdType originalCellId=originalCellIds->GetValue(cellId);
 166       int originalCellType=usgIn->GetCellType(originalCellId);
 167
 168       shrinked->GetCellPoints(cellId, ids);
 169       surface->GetCellPoints(cellId, surfaceIds);
 170
 171       for(int id=0; id<ids->GetNumberOfIds(); id++)
 172         {
 173         vtkIdType surfaceId=surfaceIds->GetId(id);
 174         vtkIdType shrinkedId=ids->GetId(id);
 175         vtkIdType originalPointId = originalPointIds->GetValue(surfaceId);
 176
 177         usgIn->GetCellPoints(originalCellId, originalIds);
 178         int originalLocalId=-1;
 179         for(int li=0; li<originalIds->GetNumberOfIds(); li++)
 180           {
 181           if(originalPointId==originalIds->GetId(li))
 182             {
 183             originalLocalId=li;
 184             break;
 185             }
 186           }
 187         if(originalLocalId==-1)
 188           {
 189           originalLocalId=0;
 190           vtkErrorMacro("cannot find original id");
 191           }
 192
 193         const double * w=dict[originalCellType]->GetShapeFunctionWeights(
 194             originalLocalId);
 195         int j;
 196         for(j=0; j<dict[originalCellType]->GetNumberOfNodes(); j++)
 197           {
 198           if(w[j]==1.0)
 199             break;
 200           }
 201         if(j==dict[originalCellType]->GetNumberOfNodes())
 202           {
 203             //vtkErrorMacro("cannot find elno weigth.");
 204           j=id;
 205           }
 206         newArray->SetTuple(shrinkedId, offset+j, data);
 207         }
 208       }
 209     }
 210
 211   ids->FastDelete();
 212   surfaceIds->FastDelete();
 213   originalIds->FastDelete();
 214   delete[] dict;
 215
 216   return 1;
 217 }
 218
 219 void vtkELNOSurfaceFilter::PrintSelf(ostream& os, vtkIndent indent)
 220 {
 221   this->Superclass::PrintSelf(os, indent);
 222 }