dox/Filtering/vtkUnstructuredGrid.h

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

  Program:   Visualization Toolkit
  Module:    vtkUnstructuredGrid.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 __vtkUnstructuredGrid_h
#define __vtkUnstructuredGrid_h

#include "vtkPointSet.h"

class vtkCellArray;
class vtkCellLinks;
class vtkConvexPointSet;
class vtkEmptyCell;
class vtkHexahedron;
class vtkIdList;
class vtkIdTypeArray;
class vtkLine;
class vtkPixel;
class vtkPolyLine;
class vtkPolyVertex;
class vtkPolygon;
class vtkPyramid;
class vtkPentagonalPrism;
class vtkHexagonalPrism;
class vtkQuad;
class vtkQuadraticEdge;
class vtkQuadraticHexahedron;
class vtkQuadraticWedge;
class vtkQuadraticPyramid;
class vtkQuadraticQuad;
class vtkQuadraticTetra;
class vtkQuadraticTriangle;
class vtkTetra;
class vtkTriangle;
class vtkTriangleStrip;
class vtkUnsignedCharArray;
class vtkVertex;
class vtkVoxel;
class vtkWedge;
class vtkTriQuadraticHexahedron;
class vtkQuadraticLinearWedge;
class vtkQuadraticLinearQuad;
class vtkBiQuadraticQuad;
class vtkBiQuadraticQuadraticWedge;
class vtkBiQuadraticQuadraticHexahedron;
class vtkBiQuadraticTriangle;
class vtkCubicLine;
class vtkPolyhedron;
class vtkIdTypeArray;

class VTK_FILTERING_EXPORT vtkUnstructuredGrid : public vtkPointSet 
{
public:
  static vtkUnstructuredGrid *New();

  vtkTypeMacro(vtkUnstructuredGrid,vtkPointSet);
  void PrintSelf(ostream& os, vtkIndent indent);


  int GetDataObjectType() {return VTK_UNSTRUCTURED_GRID;};
  virtual void Allocate(vtkIdType numCells=1000, int extSize=1000);
  
  vtkIdType InsertNextCell(int type, vtkIdType npts, vtkIdType *ptIds);
  
  vtkIdType InsertNextCell(int type, vtkIdList *ptIds);
  
  // Desciption:
  // Insert/create a polyhedron cell. npts is the number of unique points in 
  // the cell. pts is the list of the unique cell point Ids. nfaces is the 
  // number of faces in the cell. faces is the face-stream 
  // [numFace0Pts, id1, id2, id3, numFace1Pts,id1, id2, id3, ...]. 
  // All point Ids are global.
  vtkIdType InsertNextCell(int type, vtkIdType npts, vtkIdType *ptIds, 
                           vtkIdType nfaces, vtkIdType *faces);


  void Reset();
  virtual void CopyStructure(vtkDataSet *ds);
  vtkIdType GetNumberOfCells();
  virtual vtkCell *GetCell(vtkIdType cellId);
  virtual void GetCell(vtkIdType cellId, vtkGenericCell *cell);
  virtual void GetCellBounds(vtkIdType cellId, double bounds[6]);
  virtual void GetCellPoints(vtkIdType cellId, vtkIdList *ptIds);
  void GetPointCells(vtkIdType ptId, vtkIdList *cellIds);

  int GetCellType(vtkIdType cellId);
  vtkUnsignedCharArray* GetCellTypesArray() { return this->Types; }
  vtkIdTypeArray* GetCellLocationsArray() { return this->Locations; }
  void Squeeze();
  void Initialize();
  int GetMaxCellSize();
  void BuildLinks();
  vtkCellLinks *GetCellLinks() {return this->Links;};
  virtual void GetCellPoints(vtkIdType cellId, vtkIdType& npts,
                             vtkIdType* &pts);
  
  void GetFaceStream(vtkIdType cellId, vtkIdList *ptIds);

  void GetFaceStream(vtkIdType cellId, vtkIdType& nfaces, vtkIdType* &ptIds);


  void SetCells(int type, vtkCellArray *cells);
  void SetCells(int *types, vtkCellArray *cells);
  void SetCells(vtkUnsignedCharArray *cellTypes, vtkIdTypeArray *cellLocations, 
                vtkCellArray *cells);
  void SetCells(vtkUnsignedCharArray *cellTypes, vtkIdTypeArray *cellLocations,
                vtkCellArray *cells, vtkIdTypeArray *faceLocations, 
                vtkIdTypeArray *faces);
  
  vtkCellArray *GetCells() {return this->Connectivity;};
  void ReplaceCell(vtkIdType cellId, int npts, vtkIdType *pts);
  vtkIdType InsertNextLinkedCell(int type, int npts, vtkIdType *pts);
  void RemoveReferenceToCell(vtkIdType ptId, vtkIdType cellId);
  void AddReferenceToCell(vtkIdType ptId, vtkIdType cellId);
  void ResizeCellList(vtkIdType ptId, int size);


  virtual void GetCellNeighbors(vtkIdType cellId, vtkIdList *ptIds, 
                                vtkIdList *cellIds);

  void GetUpdateExtent(int &piece, int &numPieces, int &ghostLevel);


  virtual int* GetUpdateExtent();
  virtual void GetUpdateExtent(int& x0, int& x1, int& y0, int& y1,
                               int& z0, int& z1);
  virtual void GetUpdateExtent(int extent[6]);


  virtual int GetPiece();
  virtual int GetNumberOfPieces();

  virtual int GetGhostLevel();
  
  unsigned long GetActualMemorySize();
    

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

  void GetIdsOfCellsOfType(int type, vtkIdTypeArray *array);

  int IsHomogeneous();

  void RemoveGhostCells(int level);

  //BTX

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

  vtkIdType      *GetFaces(vtkIdType cellId);


  vtkIdTypeArray* GetFaces(){return this->Faces;};
  vtkIdTypeArray* GetFaceLocations(){return this->FaceLocations;};
  
  int InitializeFacesRepresentation(vtkIdType numPrevCells);


  static void DecomposeAPolyhedronCell(vtkCellArray *polyhedronCellArray,
                                       vtkIdType & nCellpts,
                                       vtkIdType & nCellfaces,
                                       vtkCellArray *cellArray,
                                       vtkIdTypeArray *faces);

  static void DecomposeAPolyhedronCell(vtkIdType * polyhedronCellStream,
                                       vtkIdType & nCellpts,
                                       vtkIdType & nCellfaces,
                                       vtkCellArray *cellArray,
                                       vtkIdTypeArray *faces);


  static void DecomposeAPolyhedronCell(vtkIdType nCellFaces,
                                       vtkIdType * inFaceStream,
                                       vtkIdType & nCellpts,
                                       vtkCellArray * cellArray,
                                       vtkIdTypeArray * faces);


  static void ConvertFaceStreamPointIds(vtkIdList * faceStream,
                                        vtkIdType * idMap);


  static void ConvertFaceStreamPointIds(vtkIdType nfaces,
                                        vtkIdType * faceStream,
                                        vtkIdType * idMap);

    
protected:
  vtkUnstructuredGrid();
  ~vtkUnstructuredGrid();

  // used by GetCell method
  vtkVertex                         *Vertex;
  vtkPolyVertex                     *PolyVertex;
  vtkLine                           *Line;
  vtkPolyLine                       *PolyLine;
  vtkTriangle                       *Triangle;
  vtkTriangleStrip                  *TriangleStrip;
  vtkPixel                          *Pixel;
  vtkQuad                           *Quad;
  vtkPolygon                        *Polygon;
  vtkTetra                          *Tetra;
  vtkVoxel                          *Voxel;
  vtkHexahedron                     *Hexahedron;
  vtkWedge                          *Wedge;
  vtkPyramid                        *Pyramid;
  vtkPentagonalPrism                *PentagonalPrism;
  vtkHexagonalPrism                 *HexagonalPrism;
  vtkQuadraticEdge                  *QuadraticEdge;
  vtkQuadraticTriangle              *QuadraticTriangle;
  vtkQuadraticQuad                  *QuadraticQuad;
  vtkQuadraticTetra                 *QuadraticTetra;
  vtkQuadraticHexahedron            *QuadraticHexahedron;
  vtkQuadraticWedge                 *QuadraticWedge;
  vtkQuadraticPyramid               *QuadraticPyramid;
  vtkQuadraticLinearQuad            *QuadraticLinearQuad;
  vtkBiQuadraticQuad                *BiQuadraticQuad;
  vtkTriQuadraticHexahedron         *TriQuadraticHexahedron;
  vtkQuadraticLinearWedge           *QuadraticLinearWedge;
  vtkBiQuadraticQuadraticWedge      *BiQuadraticQuadraticWedge;
  vtkBiQuadraticQuadraticHexahedron *BiQuadraticQuadraticHexahedron;
  vtkBiQuadraticTriangle            *BiQuadraticTriangle;
  vtkCubicLine                      *CubicLine;
  vtkConvexPointSet                 *ConvexPointSet;
  vtkPolyhedron                     *Polyhedron;
  vtkEmptyCell                      *EmptyCell;
  
  // points inherited
  // point data (i.e., scalars, vectors, normals, tcoords) inherited
  vtkCellArray *Connectivity;
  vtkCellLinks *Links;
  vtkUnsignedCharArray *Types;
  vtkIdTypeArray *Locations;

  // Special support for polyhedra/cells with explicit face representations.
  // The Faces class represents polygonal faces using a modified vtkCellArray
  // structure. Each cell face list begins with the total number of faces in
  // the cell, followed by a vtkCellArray data organization
  // (n,i,j,k,n,i,j,k,...).
  vtkIdTypeArray *Faces;
  vtkIdTypeArray *FaceLocations;

private:
  // Hide these from the user and the compiler.
  vtkUnstructuredGrid(const vtkUnstructuredGrid&);  // Not implemented.
  void operator=(const vtkUnstructuredGrid&);  // Not implemented.

  void Cleanup();
  

  VTK_LEGACY(void GetCellNeighbors(vtkIdType cellId, vtkIdList& ptIds, vtkIdList& cellIds));
};

#endif