vtkOrderedTriangulator.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkOrderedTriangulator.h,v $

  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 __vtkOrderedTriangulator_h
#define __vtkOrderedTriangulator_h

#include "vtkObject.h"

class  vtkUnstructuredGrid;
class  vtkCellArray;
class  vtkHeap;
class  vtkIdList;
class  vtkPoints;
class  vtkTetra;
class  vtkDataArray;
class  vtkDoubleArray;
struct vtkOTMesh;
struct vtkOTTemplates;
class vtkPointLocator;
class vtkPointData;
class vtkCellData;

// Template ID's must be 32-bits. See .cxx file for more information.
#if VTK_SIZEOF_SHORT == 4
typedef unsigned short  TemplateIDType;
#elif VTK_SIZEOF_INT == 4
typedef unsigned int    TemplateIDType;
#elif VTK_SIZEOF_LONG == 4
typedef unsigned long   TemplateIDType;
#endif    

class VTK_FILTERING_EXPORT vtkOrderedTriangulator : public vtkObject
{
public:
  vtkTypeRevisionMacro(vtkOrderedTriangulator,vtkObject);
  void PrintSelf(ostream& os, vtkIndent indent);

  static vtkOrderedTriangulator *New();


  void InitTriangulation(double xmin, double xmax, double ymin, double ymax,
                         double zmin, double zmax, int numPts);
  void InitTriangulation(double bounds[6], int numPts);


  vtkIdType InsertPoint(vtkIdType id, double x[3], double p[3], int type);
  vtkIdType InsertPoint(vtkIdType id, vtkIdType sortid, double x[3], 
                        double p[3], int type);
  vtkIdType InsertPoint(vtkIdType id, vtkIdType sortid,  vtkIdType sortid2, 
                        double x[3], double p[3], int type);


  void Triangulate();
  void TemplateTriangulate(int cellType, int numPts, int numEdges);

  void UpdatePointType(vtkIdType internalId, int type);
  
  double *GetPointPosition(vtkIdType internalId);

  double *GetPointLocation(vtkIdType internalId);
  
  vtkIdType GetPointId(vtkIdType internalId);


  vtkGetMacro(NumberOfPoints,int);
  

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


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


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

  vtkIdType GetTetras(int classification, vtkUnstructuredGrid *ugrid);
  
  vtkIdType AddTetras(int classification, vtkUnstructuredGrid *ugrid);
  
  vtkIdType AddTetras(int classification, vtkCellArray *connectivity);
  

  vtkIdType AddTetras(int classification,
                      vtkPointLocator *locator,
                      vtkCellArray *outConnectivity,
                      vtkPointData *inPD,
                      vtkPointData *outPD,
                      vtkCellData *inCD,
                      vtkIdType cellId,
                      vtkCellData *outCD);

  vtkIdType AddTetras(int classification, vtkIdList *ptIds, vtkPoints *pts);
  
  vtkIdType AddTriangles(vtkCellArray *connectivity);
  
  vtkIdType AddTriangles(vtkIdType id, vtkCellArray *connectivity);
  
  void InitTetraTraversal();
  

  int  GetNextTetra(int classification, vtkTetra *tet,
                    vtkDataArray *cellScalars, vtkDoubleArray *tetScalars);
  
protected:
  vtkOrderedTriangulator();
  ~vtkOrderedTriangulator();

private:
  void       Initialize();

  vtkOTMesh *Mesh;
  int        NumberOfPoints; //number of points inserted
  int        MaximumNumberOfPoints; //maximum possible number of points to be inserted
  double     Bounds[6];
  int        PreSorted;
  int        UseTwoSortIds;
  vtkHeap   *Heap;
  double     Quanta;

  int             UseTemplates;
  int             CellType;
  int             NumberOfCellPoints;
  int             NumberOfCellEdges;
  vtkHeap        *TemplateHeap;
  vtkOTTemplates *Templates;
  int             TemplateTriangulation();
  void            AddTemplate();
  TemplateIDType  ComputeTemplateIndex();
    
private:
  vtkOrderedTriangulator(const vtkOrderedTriangulator&);  // Not implemented.
  void operator=(const vtkOrderedTriangulator&);  // Not implemented.
};

#endif

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