---

Filtering/vtkImplicitDataSet.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkImplicitDataSet.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 __vtkImplicitDataSet_h
#define __vtkImplicitDataSet_h

#include "vtkImplicitFunction.h"

class vtkDataSet;

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

  static vtkImplicitDataSet *New();

  unsigned long GetMTime();


  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 n[3]);


  virtual void SetDataSet(vtkDataSet*);
  vtkGetObjectMacro(DataSet,vtkDataSet);


  vtkSetMacro(OutValue,float);
  vtkGetMacro(OutValue,float);


  vtkSetVector3Macro(OutGradient,float);
  vtkGetVector3Macro(OutGradient,float);

protected:
  vtkImplicitDataSet();
  ~vtkImplicitDataSet();

  vtkDataSet *DataSet;
  float OutValue;
  float OutGradient[3];

  float *Weights; //used to compute interpolation weights
  int Size; //keeps track of length of weights array

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

#endif

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