text: /*=========================================================================
  
    Program:   Visualization Toolkit
    Module:    vtkDataObjectToTable.cxx
  
    Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
    All rights reserved.
    See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
  
       This software is distributed WITHOUT ANY WARRANTY; without even
       the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
       PURPOSE.  See the above copyright notice for more information.
  
  =========================================================================*/
  /*-------------------------------------------------------------------------
    Copyright 2008 Sandia Corporation.
    Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
    the U.S. Government retains certain rights in this software.
  -------------------------------------------------------------------------*/
  
  #include "vtkDataObjectToTable.h"
  
  #include "vtkCellData.h"
  #include "vtkDataObject.h"
  #include "vtkDataSet.h"
  #include "vtkDataSetAttributes.h"
  #include "vtkGraph.h"
  #include "vtkInformation.h"
  #include "vtkInformationVector.h"
  #include "vtkObjectFactory.h"
  #include "vtkPointData.h"
  #include "vtkTable.h"
  
  vtkStandardNewMacro(vtkDataObjectToTable);
  //---------------------------------------------------------------------------
  vtkDataObjectToTable::vtkDataObjectToTable()
  {
    this->FieldType = POINT_DATA;
  }
  
  //---------------------------------------------------------------------------
  vtkDataObjectToTable::~vtkDataObjectToTable() = default;
  
  //---------------------------------------------------------------------------
  int vtkDataObjectToTable::FillInputPortInformation(int vtkNotUsed(port), vtkInformation* info)
  {
    info->Remove(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE());
    info->Append(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(), "vtkDataSet");
    info->Append(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(), "vtkGraph");
    info->Append(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(), "vtkTable");
    return 1;
  }
  
  //---------------------------------------------------------------------------
  int vtkDataObjectToTable::RequestData(
    vtkInformation*, vtkInformationVector** inputVector, vtkInformationVector* outputVector)
  {
    // Get input data
    vtkInformation* inputInfo = inputVector[0]->GetInformationObject(0);
    vtkDataObject* input = inputInfo->Get(vtkDataObject::DATA_OBJECT());
  
    // Get output table
    vtkInformation* outputInfo = outputVector->GetInformationObject(0);
    vtkTable* output = vtkTable::SafeDownCast(outputInfo->Get(vtkDataObject::DATA_OBJECT()));
  
    // If the input is a table, just copy it into the output.
    if (vtkTable::SafeDownCast(input))
    {
      output->ShallowCopy(input);
      return 1;
    }
  
    vtkDataSetAttributes* data = vtkDataSetAttributes::New();
  
    switch (this->FieldType)
    {
      case FIELD_DATA:
        if (input->GetFieldData())
        {
          data->ShallowCopy(input->GetFieldData());
        }
        break;
      case POINT_DATA:
        if (vtkDataSet* const dataset = vtkDataSet::SafeDownCast(input))
        {
          if (dataset->GetPointData())
          {
            data->ShallowCopy(dataset->GetPointData());
          }
        }
        break;
      case CELL_DATA:
        if (vtkDataSet* const dataset = vtkDataSet::SafeDownCast(input))
        {
          if (dataset->GetCellData())
          {
            data->ShallowCopy(dataset->GetCellData());
          }
        }
        break;
      case VERTEX_DATA:
        if (vtkGraph* const graph = vtkGraph::SafeDownCast(input))
        {
          if (graph->GetVertexData())
          {
            data->ShallowCopy(graph->GetVertexData());
          }
        }
        break;
      case EDGE_DATA:
        if (vtkGraph* const graph = vtkGraph::SafeDownCast(input))
        {
          if (graph->GetEdgeData())
          {
            data->ShallowCopy(graph->GetEdgeData());
          }
        }
        break;
    }
  
    output->SetRowData(data);
    data->Delete();
    return 1;
  }
  
  //---------------------------------------------------------------------------
  void vtkDataObjectToTable::PrintSelf(ostream& os, vtkIndent indent)
  {
    this->Superclass::PrintSelf(os, indent);
    os << indent << "FieldType: " << this->FieldType << endl;
  }
  