vtkAMRSliceFilter.h

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

 Program:   Visualization Toolkit
 Module:    vtkAMRSliceFilter.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 vtkAMRSliceFilter_h
#define vtkAMRSliceFilter_h

#include "vtkFiltersAMRModule.h" // For export macro
#include "vtkOverlappingAMRAlgorithm.h"

#include <vector> // For STL vector

class vtkInformation;
class vtkInformationVector;
class vtkOverlappingAMR;
class vtkMultiProcessController;
class vtkPlane;
class vtkAMRBox;
class vtkUniformGrid;

class VTKFILTERSAMR_EXPORT vtkAMRSliceFilter :
  public vtkOverlappingAMRAlgorithm
{
public:
  static vtkAMRSliceFilter* New();
  vtkTypeMacro( vtkAMRSliceFilter, vtkOverlappingAMRAlgorithm );
  void PrintSelf(ostream &os, vtkIndent indent );

  // Inline Gettters & Setters
  vtkSetMacro(OffSetFromOrigin,double);
  vtkGetMacro(OffSetFromOrigin,double);


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


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


  vtkSetMacro(MaxResolution,int);
  vtkGetMacro(MaxResolution,int);


  vtkSetMacro(Normal,int);
  vtkGetMacro(Normal,int);


  vtkSetMacro( Controller, vtkMultiProcessController* );
  vtkGetMacro( Controller, vtkMultiProcessController* );

  // Standard Pipeline methods
  virtual int RequestData(
     vtkInformation*,vtkInformationVector**,vtkInformationVector*);
  virtual int FillInputPortInformation(int port, vtkInformation *info);
  virtual int FillOutputPortInformation(int port, vtkInformation *info);

  virtual int RequestInformation(
      vtkInformation *rqst,
      vtkInformationVector **inputVector,
      vtkInformationVector *outputVector );

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

protected:
  vtkAMRSliceFilter();
  ~vtkAMRSliceFilter();

  int GetDonorCellIdx( double x[3], vtkUniformGrid *ug );

  void ComputeCellCenter(
      vtkUniformGrid *ug, const int cellIdx, double centroid[3] );

  vtkUniformGrid* GetSlice( double origin[3], int* dims, double* gorigin, double* spacing );

  void GetSliceCellData( vtkUniformGrid *slice, vtkUniformGrid *grid3D );

  bool PlaneIntersectsAMRBox( double plane[4], double bounds[6] );

  void ComputeAMRBlocksToLoad(
      vtkPlane *p, vtkOverlappingAMR *metadata );

  void GetAMRSliceInPlane(
      vtkPlane *p, vtkOverlappingAMR *inp,
      vtkOverlappingAMR *out );

  bool IsAMRData2D( vtkOverlappingAMR *input );

  vtkPlane* GetCutPlane( vtkOverlappingAMR *input );

  void InitializeOffSet(
    vtkOverlappingAMR *inp, double *min, double *max );

  double OffSetFromOrigin;
  int    Normal; // 1=>X-Normal, 2=>Y-Normal, 3=>Z-Normal
  bool   initialRequest;
  int    MaxResolution;
  vtkMultiProcessController *Controller;

  int ForwardUpstream;
  int EnablePrefetching;

  std::vector< int > BlocksToLoad;

private:
  vtkAMRSliceFilter( const vtkAMRSliceFilter& ) VTK_DELETE_FUNCTION;
  void operator=( const vtkAMRSliceFilter& ) VTK_DELETE_FUNCTION;
};

#endif /* vtkAMRSliceFilter_h */