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/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkEllipsoidTensorProbeRepresentation.h

  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.

=========================================================================*/
#ifndef vtkEllipsoidTensorProbeRepresentation_h
#define vtkEllipsoidTensorProbeRepresentation_h

#include "vtkInteractionWidgetsModule.h" // For export macro
#include "vtkTensorProbeRepresentation.h"

class vtkCellPicker;
class vtkTensorGlyph;
class vtkPolyDataNormals;

class VTKINTERACTIONWIDGETS_EXPORT vtkEllipsoidTensorProbeRepresentation :
               public vtkTensorProbeRepresentation
{
public:
  static vtkEllipsoidTensorProbeRepresentation *New();


  vtkTypeMacro(vtkEllipsoidTensorProbeRepresentation,
                                vtkTensorProbeRepresentation);
  void PrintSelf(ostream& os, vtkIndent indent);

  virtual void BuildRepresentation();
  virtual int RenderOpaqueGeometry(vtkViewport *);

  virtual int SelectProbe( int pos[2] );


  virtual void GetActors(vtkPropCollection *);
  virtual void ReleaseGraphicsResources(vtkWindow *);

protected:
  vtkEllipsoidTensorProbeRepresentation();
  ~vtkEllipsoidTensorProbeRepresentation();

  // Get the interpolated tensor at the current position
  void EvaluateTensor( double t[9] );

  // Register internal Pickers within PickingManager
  virtual void RegisterPickers();

  vtkActor           * EllipsoidActor;
  vtkPolyDataMapper  * EllipsoidMapper;
  vtkPolyData        * TensorSource;
  vtkTensorGlyph     * TensorGlypher;
  vtkCellPicker      * CellPicker;
  vtkPolyDataNormals * PolyDataNormals;

private:
  vtkEllipsoidTensorProbeRepresentation(const
      vtkEllipsoidTensorProbeRepresentation&);  //Not implemented
  void operator=(const
      vtkEllipsoidTensorProbeRepresentation&);  //Not implemented

};

#endif