---

Filtering/vtkImplicitBoolean.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkImplicitBoolean.h,v $
  Language:  C++

  Copyright (c) 1993-2002 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 __vtkImplicitBoolean_h
#define __vtkImplicitBoolean_h

#include "vtkImplicitFunction.h"
 
class vtkImplicitFunctionCollection;

#define VTK_UNION 0
#define VTK_INTERSECTION 1
#define VTK_DIFFERENCE 2
#define VTK_UNION_OF_MAGNITUDES 3

class VTK_FILTERING_EXPORT vtkImplicitBoolean : public vtkImplicitFunction
{
public:
  vtkTypeRevisionMacro(vtkImplicitBoolean,vtkImplicitFunction);
  void PrintSelf(ostream& os, vtkIndent indent);

  static vtkImplicitBoolean *New();


  float EvaluateFunction(float x[3]);
  float EvaluateFunction(float x, float y, float z)
    {return this->vtkImplicitFunction::EvaluateFunction(x, y, z); } ;

  void EvaluateGradient(float x[3], float g[3]);

  unsigned long GetMTime();

  void AddFunction(vtkImplicitFunction *in);

  void RemoveFunction(vtkImplicitFunction *in);

  vtkImplicitFunctionCollection *GetFunction() {return this->FunctionList;};


  vtkSetClampMacro(OperationType,int,VTK_UNION,VTK_UNION_OF_MAGNITUDES);
  vtkGetMacro(OperationType,int);
  void SetOperationTypeToUnion() 
    {this->SetOperationType(VTK_UNION);};
  void SetOperationTypeToIntersection() 
    {this->SetOperationType(VTK_INTERSECTION);};
  void SetOperationTypeToDifference() 
    {this->SetOperationType(VTK_DIFFERENCE);};
  void SetOperationTypeToUnionOfMagnitudes() 
    {this->SetOperationType(VTK_UNION_OF_MAGNITUDES);};
  const char *GetOperationTypeAsString();
  
protected:
  vtkImplicitBoolean();
  ~vtkImplicitBoolean();

  vtkImplicitFunctionCollection *FunctionList;

  int OperationType;

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

inline const char *vtkImplicitBoolean::GetOperationTypeAsString(void)
{
  if ( this->OperationType == VTK_UNION )
    {
    return "Union";
    }
  else if ( this->OperationType == VTK_INTERSECTION ) 
    {
    return "Intersection";
    }
  else if ( this->OperationType == VTK_DIFFERENCE ) 
    {
    return "Difference";
    }
  else 
    {
    return "UnionOfMagnitudes";
    }
}

#endif

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