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

  Program:   Visualization Toolkit
  Module:    vtkImplicitBoolean.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 vtkImplicitBoolean_h
#define vtkImplicitBoolean_h

#include "vtkCommonDataModelModule.h" // For export macro
#include "vtkImplicitFunction.h"

class vtkImplicitFunctionCollection;

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

  enum OperationType
  {
    VTK_UNION=0,
    VTK_INTERSECTION,
    VTK_DIFFERENCE,
    VTK_UNION_OF_MAGNITUDES
  };

  static vtkImplicitBoolean *New();


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

  void EvaluateGradient(double x[3], double 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