Method Initialize

Filters/CellGrid/vtkCellGridSampleQuery.cxx:29–87

}

bool vtkCellGridSampleQuery::Initialize()
{
  this->Superclass::Initialize();

  this->OutputOffsets.clear();
  this->AttributeMap.clear();
  this->MaximumParametricDimension = 0;
  this->SourceCellId = nullptr;
  this->SourceCellType = nullptr;
  this->SourceCellSite = nullptr;
  if (!this->Input || !this->Output)
  {
    return false;
  }

  if (this->IncludeSourceCellInfo)
  {
    this->SourceCellType =
      vtkTypeUInt32Array::SafeDownCast(this->Output->GetColumnByName("SourceCellType"));
    if (!this->SourceCellType)
    {
      this->SourceCellType = vtkSmartPointer<vtkTypeUInt32Array>::New();
      this->SourceCellType->SetName("SourceCellType");
      this->Output->AddColumn(this->SourceCellType);
    }

    this->SourceCellId =
      vtkIdTypeArray::SafeDownCast(this->Output->GetColumnByName("vtkOriginalCellIds"));
    if (!this->SourceCellId)
    {
      this->SourceCellId = vtkSmartPointer<vtkIdTypeArray>::New();
      this->SourceCellType->SetName("vtkOriginalCellIds");
      this->Output->AddColumn(this->SourceCellId);
    }
  }

  if (this->IncludeSourceCellSite)
  {
    this->SourceCellSite =
      vtkDataArray::SafeDownCast(this->Output->GetColumnByName("SourceCellSite"));
    if (!this->SourceCellSite)
    {
      this->SourceCellSite = vtkSmartPointer<vtkDoubleArray>::New();
      this->SourceCellSite->SetName("SourceCellSite");
      this->Output->AddColumn(this->SourceCellSite);
    }
  }

  for (const auto& inputAtt : this->Input->GetCellAttributeList())
  {
    vtkNew<vtkDoubleArray> outputCol;
    outputCol->SetNumberOfComponents(inputAtt->GetNumberOfComponents());
    outputCol->SetName(inputAtt->GetName().Data().c_str());
    this->Output->AddColumn(outputCol);
    this->AttributeMap[inputAtt] = outputCol;
  }

  return true;