dox/Graphics/vtkClipVolume.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkClipVolume.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 __vtkClipVolume_h
#define __vtkClipVolume_h

#include "vtkUnstructuredGridAlgorithm.h"

class vtkCellData;
class vtkDataArray;
class vtkIdList;
class vtkImplicitFunction;
class vtkMergePoints;
class vtkOrderedTriangulator;
class vtkPointData;
class vtkPointLocator;
class vtkPoints;
class vtkUnstructuredGrid;
class vtkCell;
class vtkTetra;
class vtkCellArray;
class vtkIdTypeArray;
class vtkUnsignedCharArray;

class VTK_GRAPHICS_EXPORT vtkClipVolume : public vtkUnstructuredGridAlgorithm
{
public:
  vtkTypeRevisionMacro(vtkClipVolume,vtkUnstructuredGridAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent);

  static vtkClipVolume *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();


  vtkSetMacro(Mixed3DCellGeneration,int);
  vtkGetMacro(Mixed3DCellGeneration,int);
  vtkBooleanMacro(Mixed3DCellGeneration,int);


  vtkSetClampMacro(MergeTolerance,double,0.0001,0.25);
  vtkGetMacro(MergeTolerance,double);
  

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

  void CreateDefaultLocator();

  unsigned long int GetMTime();

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

  virtual void ReportReferences(vtkGarbageCollector*);

  virtual int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
  virtual int FillInputPortInformation(int port, vtkInformation *info);

  void ClipTets(double value, vtkTetra *clipTetra, vtkDataArray *clipScalars, 
                vtkDataArray *cellScalars, vtkIdList *tetraIds, 
                vtkPoints *tetraPts, vtkPointData *inPD, vtkPointData *outPD, 
                vtkCellData *inCD, vtkIdType cellId, vtkCellData *outCD, 
                vtkCellData *clippedCD, int insideOut);
  void ClipVoxel(double value, vtkDataArray *cellScalars, int flip,
                 double origin[3], double spacing[3], vtkIdList *cellIds,
                 vtkPoints *cellPts, vtkPointData *inPD, vtkPointData *outPD, 
                 vtkCellData *inCD, vtkIdType cellId, vtkCellData *outCD, 
                 vtkCellData *clippedCD);

  vtkImplicitFunction *ClipFunction;
  vtkPointLocator     *Locator;
  int                  InsideOut;
  double                Value;
  int                  GenerateClipScalars;
  double                MergeTolerance;
  int                  Mixed3DCellGeneration;
  int                  GenerateClippedOutput;
  vtkUnstructuredGrid *ClippedOutput;
  
private:
  vtkOrderedTriangulator *Triangulator;
  
  // Used temporarily to pass data around
  vtkIdType             NumberOfCells;
  vtkCellArray          *Connectivity;
  vtkUnsignedCharArray  *Types;
  vtkIdTypeArray        *Locations;
  vtkIdType             NumberOfClippedCells;
  vtkCellArray          *ClippedConnectivity;
  vtkUnsignedCharArray  *ClippedTypes;
  vtkIdTypeArray        *ClippedLocations;

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

#endif

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