vtkClipDataSet.h

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

  Program:   Visualization Toolkit
  Module:    vtkClipDataSet.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 __vtkClipDataSet_h
#define __vtkClipDataSet_h

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

class vtkCallbackCommand;
class vtkImplicitFunction;
class vtkIncrementalPointLocator;

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

  static vtkClipDataSet *New();


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


  vtkSetMacro(UseValueAsOffset, bool);
  vtkGetMacro(UseValueAsOffset, bool);
  vtkBooleanMacro(UseValueAsOffset, bool);


  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);


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

  vtkUnstructuredGrid *GetClippedOutput();


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

  void CreateDefaultLocator();

  unsigned long GetMTime();


  void SetOuputPointsPrecision(int precision);
  int GetOutputPointsPrecision() const;

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


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

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

  vtkIncrementalPointLocator *Locator;
  int InsideOut;
  double Value;
  int GenerateClipScalars;

  int GenerateClippedOutput;
  double MergeTolerance;

  // Callback registered with the InternalProgressObserver.
  static void InternalProgressCallbackFunction(vtkObject*, unsigned long,
                                               void* clientdata, void*);
  void InternalProgressCallback(vtkAlgorithm *algorithm);
  // The observer to report progress from the internal readers.
  vtkCallbackCommand* InternalProgressObserver;

  //helper functions
  void ClipVolume(vtkDataSet *input, vtkUnstructuredGrid *output);

  int ClipPoints(vtkDataSet* input, vtkUnstructuredGrid* output,
                 vtkInformationVector** inputVector);

  bool UseValueAsOffset;
  int OutputPointsPrecision;

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

#endif