dox/Filtering/vtkRectilinearGrid.h

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

  Program:   Visualization Toolkit
  Module:    vtkRectilinearGrid.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 __vtkRectilinearGrid_h
#define __vtkRectilinearGrid_h

#include "vtkDataSet.h"
#include "vtkStructuredData.h" // For inline methods

class vtkVertex;
class vtkLine;
class vtkPixel;
class vtkVoxel;
class vtkDataArray;

class VTK_FILTERING_EXPORT vtkRectilinearGrid : public vtkDataSet
{
public:
  static vtkRectilinearGrid *New();

  vtkTypeMacro(vtkRectilinearGrid,vtkDataSet);
  void PrintSelf(ostream& os, vtkIndent indent);

  int GetDataObjectType() {return VTK_RECTILINEAR_GRID;};

  void CopyStructure(vtkDataSet *ds);

  void Initialize();


  vtkIdType GetNumberOfCells();
  vtkIdType GetNumberOfPoints();
  double *GetPoint(vtkIdType ptId);
  void GetPoint(vtkIdType id, double x[3]);
  vtkCell *GetCell(vtkIdType cellId);
  void GetCell(vtkIdType cellId, vtkGenericCell *cell);
  void GetCellBounds(vtkIdType cellId, double bounds[6]);
  vtkIdType FindPoint(double x, double y, double z) { return this->vtkDataSet::FindPoint(x, y, z);};
  vtkIdType FindPoint(double x[3]);
  vtkIdType FindCell(double x[3], vtkCell *cell, vtkIdType cellId, double tol2,
                     int& subId, double pcoords[3], double *weights);
  vtkIdType FindCell(double x[3], vtkCell *cell, vtkGenericCell *gencell,
                     vtkIdType cellId, double tol2, int& subId, 
                     double pcoords[3], double *weights);
  vtkCell *FindAndGetCell(double x[3], vtkCell *cell, vtkIdType cellId, 
                          double tol2, int& subId, double pcoords[3],
                          double *weights);
  int GetCellType(vtkIdType cellId);
  void GetCellPoints(vtkIdType cellId, vtkIdList *ptIds)
    {vtkStructuredData::GetCellPoints(cellId,ptIds,this->DataDescription,
                                      this->Dimensions);}
  void GetPointCells(vtkIdType ptId, vtkIdList *cellIds)
    {vtkStructuredData::GetPointCells(ptId,cellIds,this->Dimensions);}
  void ComputeBounds();
  int GetMaxCellSize() {return 8;}; //voxel is the largest
  void GetCellNeighbors(vtkIdType cellId, vtkIdList *ptIds,
                        vtkIdList *cellIds);


  void SetDimensions(int i, int j, int k);
  void SetDimensions(int dim[3]);


  vtkGetVectorMacro(Dimensions,int,3);

  int GetDataDimension();

  int ComputeStructuredCoordinates(double x[3], int ijk[3], double pcoords[3]);

  vtkIdType ComputePointId(int ijk[3]);

  vtkIdType ComputeCellId(int ijk[3]);


  virtual void SetXCoordinates(vtkDataArray*);
  vtkGetObjectMacro(XCoordinates,vtkDataArray);


  virtual void SetYCoordinates(vtkDataArray*);
  vtkGetObjectMacro(YCoordinates,vtkDataArray);


  virtual void SetZCoordinates(vtkDataArray*);
  vtkGetObjectMacro(ZCoordinates,vtkDataArray);


  void SetExtent(int extent[6]);
  void SetExtent(int x1, int x2, int y1, int y2, int z1, int z2);
  vtkGetVector6Macro(Extent, int);

  unsigned long GetActualMemorySize();


  void ShallowCopy(vtkDataObject *src);  
  void DeepCopy(vtkDataObject *src);

  int GetExtentType() { return VTK_3D_EXTENT; };

  virtual void Crop();

  //BTX

  static vtkRectilinearGrid* GetData(vtkInformation* info);
  static vtkRectilinearGrid* GetData(vtkInformationVector* v, int i=0);
  //ETX

protected:
  vtkRectilinearGrid();
  ~vtkRectilinearGrid();

  // for the GetCell method
  vtkVertex *Vertex;
  vtkLine *Line;
  vtkPixel *Pixel;
  vtkVoxel *Voxel;
  
  int Dimensions[3];
  int DataDescription;

  int Extent[6];

  vtkDataArray *XCoordinates;
  vtkDataArray *YCoordinates;
  vtkDataArray *ZCoordinates;

  // Hang on to some space for returning points when GetPoint(id) is called.
  double PointReturn[3];

private:
  void Cleanup();

  VTK_LEGACY(void GetCellNeighbors(vtkIdType cellId, vtkIdList& ptIds, vtkIdList& cellIds));
private:
  vtkRectilinearGrid(const vtkRectilinearGrid&);  // Not implemented.
  void operator=(const vtkRectilinearGrid&);  // Not implemented.
};

//----------------------------------------------------------------------------
inline vtkIdType vtkRectilinearGrid::GetNumberOfCells() 
{
  vtkIdType nCells=1;
  int i;

  for (i=0; i<3; i++)
    {
    if (this->Dimensions[i] <= 0)
      {
      return 0;
      }
    if (this->Dimensions[i] > 1)
      {
      nCells *= (this->Dimensions[i]-1);
      }
    }

  return nCells;
}

//----------------------------------------------------------------------------
inline vtkIdType vtkRectilinearGrid::GetNumberOfPoints()
{
  return this->Dimensions[0]*this->Dimensions[1]*this->Dimensions[2];
}

//----------------------------------------------------------------------------
inline int vtkRectilinearGrid::GetDataDimension()
{
  return vtkStructuredData::GetDataDimension(this->DataDescription);
}

//----------------------------------------------------------------------------
inline vtkIdType vtkRectilinearGrid::ComputePointId(int ijk[3])
{
  return vtkStructuredData::ComputePointId(this->Dimensions,ijk);
}

//----------------------------------------------------------------------------
inline vtkIdType vtkRectilinearGrid::ComputeCellId(int ijk[3])
{
  return vtkStructuredData::ComputeCellId(this->Dimensions,ijk);
}

//----------------------------------------------------------------------------
#ifndef VTK_LEGACY_REMOVE
inline void vtkRectilinearGrid::GetCellNeighbors(vtkIdType cellId, 
  vtkIdList& ptIds, vtkIdList& cellIds)
{
  this->GetCellNeighbors(cellId, &ptIds, &cellIds);
}
#endif

#endif

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