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

  Program:   Visualization Toolkit
  Module:    vtkImplicitFunctionCollection.h
  Language:  C++
  Date:      $Date$
  Version:   $Revision$


Copyright (c) 1993-2001 Ken Martin, Will Schroeder, Bill Lorensen 
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   and/or other materials provided with the distribution.

 * Neither name of Ken Martin, Will Schroeder, or Bill Lorensen nor the names
   of any contributors may be used to endorse or promote products derived
   from this software without specific prior written permission.

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   misrepresented as being the original software.

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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR
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=========================================================================*/
// .NAME vtkImplicitFunctionCollection - maintain a list of implicit functions
// .SECTION Description
// vtkImplicitFunctionCollection is an object that creates and manipulates
// lists of objects of type vtkImplicitFunction. 
// .SECTION See Also
// vtkCollection vtkPlaneCollection

#ifndef __vtkImplicitFunctionCollection_h
#define __vtkImplicitFunctionCollection_h

#include "vtkCollection.h"
#include "vtkImplicitFunction.h"

class VTK_COMMON_EXPORT vtkImplicitFunctionCollection : public vtkCollection
{
public:
  vtkTypeMacro(vtkImplicitFunctionCollection,vtkCollection);
  static vtkImplicitFunctionCollection *New();

  // Description:
  // Add an implicit function to the list.
  void AddItem(vtkImplicitFunction *);

  // Description:
  // Get the next implicit function in the list.
  vtkImplicitFunction *GetNextItem();
  
protected:
  vtkImplicitFunctionCollection() {};
  ~vtkImplicitFunctionCollection() {};
  

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

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

inline void vtkImplicitFunctionCollection::AddItem(vtkImplicitFunction *f) 
{
  this->vtkCollection::AddItem((vtkObject *)f);
}

inline vtkImplicitFunction *vtkImplicitFunctionCollection::GetNextItem() 
{ 
  return static_cast<vtkImplicitFunction *>(this->GetNextItemAsObject());
}

#endif
