Common/vtkInterpolatedVelocityField.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkInterpolatedVelocityField.h,v $

  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 __vtkInterpolatedVelocityField_h
#define __vtkInterpolatedVelocityField_h

#include "vtkFunctionSet.h"

class vtkDataSet;
class vtkGenericCell;

class vtkInterpolatedVelocityFieldDataSetsType;

class VTK_COMMON_EXPORT vtkInterpolatedVelocityField : public vtkFunctionSet
{
public:
  vtkTypeRevisionMacro(vtkInterpolatedVelocityField,vtkFunctionSet);
  virtual void PrintSelf(ostream& os, vtkIndent indent);

  static vtkInterpolatedVelocityField *New();

  virtual int FunctionValues(double* x, double* f);

  virtual void AddDataSet(vtkDataSet* dataset);


  vtkGetMacro(LastCellId, vtkIdType);
  vtkSetMacro(LastCellId, vtkIdType);

  void ClearLastCellId() { this->LastCellId = -1; }


  int GetLastWeights(double* w);
  int GetLastLocalCoordinates(double pcoords[3]);


  vtkGetMacro(Caching, int);
  vtkSetMacro(Caching, int);
  vtkBooleanMacro(Caching, int);


  vtkGetMacro(CacheHit, int);
  vtkGetMacro(CacheMiss, int);


  vtkGetStringMacro(VectorsSelection);
  void SelectVectors(const char *fieldName) 
    {this->SetVectorsSelection(fieldName);}
  
  vtkGetObjectMacro(LastDataSet, vtkDataSet);

protected:
  vtkInterpolatedVelocityField();
  ~vtkInterpolatedVelocityField();

  vtkGenericCell* GenCell; // last cell
  vtkGenericCell* Cell;
  double* Weights; // last weights
  int WeightsSize;
  double LastPCoords[3]; // last local coordinates
  vtkIdType LastCellId;
  int CacheHit;
  int CacheMiss;
  int Caching;

  vtkDataSet* LastDataSet;

  vtkSetStringMacro(VectorsSelection);
  char *VectorsSelection;

  vtkInterpolatedVelocityFieldDataSetsType* DataSets;

  int FunctionValues(vtkDataSet* ds, double* x, double* f);

  static const double TOLERANCE_SCALE;

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

#endif

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