src/CONVERTOR/VISU_MergeFilter.hxx

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//  SALOME VTKViewer : build VTK viewer into Salome desktop
//
//  Copyright (C) 2003  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
//  CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS 
// 
//  This library is free software; you can redistribute it and/or 
//  modify it under the terms of the GNU Lesser General Public 
//  License as published by the Free Software Foundation; either 
//  version 2.1 of the License. 
// 
//  This library is distributed in the hope that it will be useful, 
//  but WITHOUT ANY WARRANTY; without even the implied warranty of 
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU 
//  Lesser General Public License for more details. 
// 
//  You should have received a copy of the GNU Lesser General Public 
//  License along with this library; if not, write to the Free Software 
//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA 
// 
// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
//
//
//
//  File   : 
//  Author : 
//  Module : SALOME
//  $Header: /home/server/cvs/VISU/VISU_SRC/src/CONVERTOR/VISU_MergeFilter.hxx,v 1.3.2.3 2007/04/20 12:59:02 enk Exp $

#ifndef VISU_MergeFilter_H
#define VISU_MergeFilter_H

#include <vtkUnstructuredGridToUnstructuredGridFilter.h>

class vtkDataSet;

namespace VISU
{
  class TFieldList;
}

// Following class was redefined in order to fix VTK bug 
//  (see code for more details)

class VISU_MergeFilter : public vtkUnstructuredGridToUnstructuredGridFilter
{
public:
  static VISU_MergeFilter *New();
  vtkTypeMacro(VISU_MergeFilter,vtkUnstructuredGridToUnstructuredGridFilter);

  // Description:
  // Specify object from which to extract geometry information.
  void SetGeometry(vtkUnstructuredGrid *input) {this->SetInput(input);};
  vtkUnstructuredGrid *GetGeometry() {return this->GetInput();};

  // Description:
  // Specify object from which to extract scalar information.
  void SetScalars(vtkDataSet *);
  vtkDataSet *GetScalars();

  // Description:
  // Set / get the object from which to extract vector information.
  void SetVectors(vtkDataSet *);
  vtkDataSet *GetVectors();

  // Description:
  // Set / get the object from which to extract normal information.
  void SetNormals(vtkDataSet *);
  vtkDataSet *GetNormals();
  
  // Description:
  // Set / get the object from which to extract texture coordinates
  // information.
  void SetTCoords(vtkDataSet *);
  vtkDataSet *GetTCoords();

  // Description:
  // Set / get the object from which to extract tensor data.
  void SetTensors(vtkDataSet *);
  vtkDataSet *GetTensors();

  // Description:
  // Set the object from which to extract a field and the name
  // of the field
  void AddField(const char* name, vtkDataSet* input);

  // Description:
  // Removes all previously added fields
  void RemoveFields();

  // Description:
  // Defines whether to perform merging of data with the geometry according to
  // the ids of the cell or not
  void
  SetMergingInputs(bool theIsMergingInputs);
  
  bool
  IsMergingInputs();
  
protected:
  VISU_MergeFilter();
  ~VISU_MergeFilter();

  // Usual data generation method
  void BasicExecute(vtkDataSet *output);
  void Execute();

  VISU::TFieldList* FieldList;
  bool myIsMergingInputs;

private:
  bool MergeGeometryCellsAndDataOnCells();
  bool MergeGeometryCellsAndDataOnAllPoints();
  bool MergeGeometryCellsAndDataOnNotAllPoints();
  
  VISU_MergeFilter(const VISU_MergeFilter&);  // Not implemented.
  void operator=(const VISU_MergeFilter&);  // Not implemented.
};

#endif

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