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

  Program:   Visualization Toolkit
  Module:    vtkVolumeCollection.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.

=========================================================================*/
// .NAME vtkVolumeCollection - a list of volumes
// .SECTION Description
// vtkVolumeCollection represents and provides methods to manipulate a
// list of volumes (i.e., vtkVolume and subclasses). The list is unsorted
// and duplicate entries are not prevented.

// .SECTION see also
// vtkCollection vtkVolume

#ifndef vtkVolumeCollection_h
#define vtkVolumeCollection_h

#include "vtkRenderingCoreModule.h" // For export macro
#include "vtkPropCollection.h"

#include "vtkVolume.h"  // Needed for static cast

class VTKRENDERINGCORE_EXPORT vtkVolumeCollection : public vtkPropCollection
{
 public:
  static vtkVolumeCollection *New();
  vtkTypeMacro(vtkVolumeCollection, vtkPropCollection);
  virtual void PrintSelf(ostream& os, vtkIndent indent);

  // Description:
  // Add a Volume to the list.
  void AddItem(vtkVolume *a)
    { this->vtkCollection::AddItem(a); }

  // Description:
  // Get the next Volume in the list. Return NULL when at the end of the
  // list.
  vtkVolume *GetNextVolume()
    { return static_cast<vtkVolume *>(this->GetNextItemAsObject()); }


  // Description:
  // Access routine provided for compatibility with previous
  // versions of VTK.  Please use the GetNextVolume() variant
  // where possible.
  vtkVolume *GetNextItem()
    { return this->GetNextVolume(); }

  //BTX
  // Description:
  // Reentrant safe way to get an object in a collection. Just pass the
  // same cookie back and forth.
  vtkVolume *GetNextVolume(vtkCollectionSimpleIterator &cookie)
    { return static_cast<vtkVolume *>(this->GetNextItemAsObject(cookie)); }
  //ETX

protected:
  vtkVolumeCollection() {}
  ~vtkVolumeCollection() {}

private:
  // hide the standard AddItem from the user and the compiler.
  void AddItem(vtkObject *o)
    { this->vtkCollection::AddItem(o); }
  void AddItem(vtkProp *o)
    { this->vtkPropCollection::AddItem(o); }

private:
  vtkVolumeCollection(const vtkVolumeCollection&);  // Not implemented.
  void operator=(const vtkVolumeCollection&);  // Not implemented.
};

#endif