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Common/vtkRectilinearGrid.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkRectilinearGrid.h,v $
  Language:  C++


Copyright (c) 1993-2001 Ken Martin, Will Schroeder, Bill Lorensen 
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

 * Redistributions of source code must retain the above copyright notice,
   this list of conditions and the following disclaimer.

 * Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.

 * Neither name of Ken Martin, Will Schroeder, or Bill Lorensen nor the names
   of any contributors may be used to endorse or promote products derived
   from this software without specific prior written permission.

 * Modified source versions must be plainly marked as such, and must not be
   misrepresented as being the original software.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

=========================================================================*/
#ifndef __vtkRectilinearGrid_h
#define __vtkRectilinearGrid_h

#include "vtkDataSet.h"
#include "vtkStructuredData.h"
class vtkVertex;
class vtkLine;
class vtkPixel;
class vtkVoxel;
class vtkDataArray;

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

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

  vtkDataObject *MakeObject() {return vtkRectilinearGrid::New();};

  int GetDataObjectType() {return VTK_RECTILINEAR_GRID;};

  void CopyStructure(vtkDataSet *ds);

  void Initialize();


  vtkIdType GetNumberOfCells();
  vtkIdType GetNumberOfPoints();
  float *GetPoint(vtkIdType ptId);
  void GetPoint(vtkIdType id, float x[3]);
  vtkCell *GetCell(vtkIdType cellId);
  void GetCell(vtkIdType cellId, vtkGenericCell *cell);
  void GetCellBounds(vtkIdType cellId, float bounds[6]);
  int FindPoint(float x, float y, float z) { return this->vtkDataSet::FindPoint(x, y, z);};
  vtkIdType FindPoint(float x[3]);
  vtkIdType FindCell(float x[3], vtkCell *cell, vtkIdType cellId, float tol2,
                     int& subId, float pcoords[3], float *weights);
  vtkIdType FindCell(float x[3], vtkCell *cell, vtkGenericCell *gencell,
                     vtkIdType cellId, float tol2, int& subId, 
                     float pcoords[3], float *weights);
  vtkCell *FindAndGetCell(float x[3], vtkCell *cell, vtkIdType cellId, 
                          float tol2, int& subId, float pcoords[3],
                          float *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(float x[3], int ijk[3], float pcoords[3]);

  vtkIdType ComputePointId(int ijk[3]);

  vtkIdType ComputeCellId(int ijk[3]);


  vtkSetObjectMacro(XCoordinates,vtkDataArray);
  vtkGetObjectMacro(XCoordinates,vtkDataArray);


  vtkSetObjectMacro(YCoordinates,vtkDataArray);
  vtkGetObjectMacro(YCoordinates,vtkDataArray);


  vtkSetObjectMacro(ZCoordinates,vtkDataArray);
  vtkGetObjectMacro(ZCoordinates,vtkDataArray);


  void SetUpdateExtent(int piece, int numPieces, int ghostLevel);
  void SetUpdateExtent(int piece, int numPieces)
    {this->SetUpdateExtent(piece, numPieces, 0);}


  void SetUpdateExtent( int x1, int x2, int y1, int y2, int z1, int z2 )
    { this->vtkDataSet::SetUpdateExtent( x1, x2, y1, y2, z1, z2 ); };
  void SetUpdateExtent( int ext[6] )
    { this->vtkDataSet::SetUpdateExtent( ext ); };


  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);
  
protected:
  vtkRectilinearGrid();
  ~vtkRectilinearGrid();

  // for the GetCell method
  vtkVertex *Vertex;
  vtkLine *Line;
  vtkPixel *Pixel;
  vtkVoxel *Voxel;
  
  // The extent type is a 3D extent
  int GetExtentType() { return VTK_3D_EXTENT; };

  virtual void Crop();

  int Dimensions[3];
  int DataDescription;

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

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

private:

  void GetCellNeighbors(vtkIdType cellId, vtkIdList& ptIds, vtkIdList& cellIds)
    {this->GetCellNeighbors(cellId, &ptIds, &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);
}

#endif

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