vtkClipHyperOctree.h

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

  Program:   Visualization Toolkit
  Module:    vtkClipHyperOctree.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 vtkClipHyperOctree_h
#define vtkClipHyperOctree_h

#include "vtkFiltersHyperTreeModule.h" // For export macro
#include "vtkUnstructuredGridAlgorithm.h"

class vtkImplicitFunction;
class vtkIncrementalPointLocator;
class vtkHyperOctreeCursor;
class vtkHyperOctree;
class vtkUnsignedCharArray;
class vtkIdTypeArray;
class vtkCellArray;
class vtkCellData;
class vtkPointData;
class vtkOrderedTriangulator;
class vtkDoubleArray;
class vtkTetra;
class vtkPoints;
class vtkPolygon;
class vtkHyperOctreeClipCutPointsGrabber;

class VTKFILTERSHYPERTREE_EXPORT vtkClipHyperOctree : public vtkUnstructuredGridAlgorithm
{
public:
  vtkTypeMacro(vtkClipHyperOctree,vtkUnstructuredGridAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent);

  static vtkClipHyperOctree *New();


  vtkSetMacro(Value,double);
  vtkGetMacro(Value,double);


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


  virtual void SetClipFunction(vtkImplicitFunction*);
  vtkGetObjectMacro(ClipFunction,vtkImplicitFunction);


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


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

  vtkUnstructuredGrid *GetClippedOutput();


  void SetLocator(vtkIncrementalPointLocator *locator);
  vtkGetObjectMacro(Locator,vtkIncrementalPointLocator);

  void CreateDefaultLocator();

  unsigned long GetMTime();

protected:
  vtkClipHyperOctree(vtkImplicitFunction *cf=NULL);
  ~vtkClipHyperOctree();

  virtual int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);


  void ClipNode(vtkHyperOctreeCursor *cursor,
                int level,
                double bounds[6]);

  virtual int FillInputPortInformation(int port, vtkInformation *info);
  vtkImplicitFunction *ClipFunction;

  vtkIncrementalPointLocator *Locator;
  vtkIncrementalPointLocator *Locator2; // used for the clipped output

  int InsideOut;
  double Value;
  int GenerateClipScalars;

  int GenerateClippedOutput;

  vtkHyperOctree *Input;
  vtkUnstructuredGrid *Output;
  vtkUnstructuredGrid *ClippedOutput;

  vtkUnsignedCharArray *Types[2];
  vtkIdTypeArray *Locs[2];
  vtkCellArray *Conn[2];
  vtkCellData *InCD;
  vtkCellData *OutCD[2];
  vtkPointData *OutPD[2];
  vtkOrderedTriangulator *Triangulator;

  vtkHyperOctreeCursor *Sibling; // to avoid allocation in the loop

  vtkDoubleArray *CellScalars;
  vtkTetra *Tetra;
  vtkDoubleArray *TetScalars;

  vtkPoints *Pts;
  vtkPolygon *Polygon;

  vtkIdType CellTypeCounter[65536]; // up-to-65536 points per octant
  vtkIdType TotalCounter;
  vtkIdType TemplateCounter; // record the number of octants that succceed
  // to use the template triangulator

  vtkHyperOctreeClipCutPointsGrabber *Grabber;

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

#endif