dox/Graphics/vtkHyperOctreeContourFilter.h

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

  Program:   Visualization Toolkit
  Module:    vtkHyperOctreeContourFilter.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 __vtkHyperOctreeContourFilter_h
#define __vtkHyperOctreeContourFilter_h

#include "vtkPolyDataAlgorithm.h"

#include "vtkContourValues.h" // Needed for inline methods
#include "vtkCutter.h" // for VTK_SORT_BY_VALUE

class vtkIncrementalPointLocator;
class vtkHyperOctree;
class vtkOrderedTriangulator;
class vtkTetra;
class vtkHyperOctreeCursor;

class vtkUnstructuredGrid;
class vtkUnsignedCharArray;
class vtkIdTypeArray;
class vtkHyperOctreeContourPointsGrabber;
class vtkBitArray;

class VTK_GRAPHICS_EXPORT vtkHyperOctreeContourFilter : public vtkPolyDataAlgorithm
{
public:
  vtkTypeMacro(vtkHyperOctreeContourFilter,vtkPolyDataAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent);

  static vtkHyperOctreeContourFilter *New();

  void SetValue(int i, double value)
    {
      this->ContourValues->SetValue(i,value);
    }


  double GetValue(int i)
    {
      return this->ContourValues->GetValue(i);
    }


  double *GetValues()
    {
      return this->ContourValues->GetValues();
    }


  void GetValues(double *contourValues)
    {
      this->ContourValues->GetValues(contourValues);
    }


  void SetNumberOfContours(int number)
    {
      this->ContourValues->SetNumberOfContours(number);
    }


  int GetNumberOfContours()
    {
      return this->ContourValues->GetNumberOfContours();
    }
  

  void GenerateValues(int numContours, double range[2])
    {
      this->ContourValues->GenerateValues(numContours, range);
    }
  

  void GenerateValues(int numContours, double
                      rangeStart, double rangeEnd)
    {
      this->ContourValues->GenerateValues(numContours, rangeStart, rangeEnd);
    }

  unsigned long GetMTime();


  void SetLocator(vtkIncrementalPointLocator *locator);
  vtkGetObjectMacro(Locator,vtkIncrementalPointLocator);

  void CreateDefaultLocator();

protected:
  vtkHyperOctreeContourFilter();
  ~vtkHyperOctreeContourFilter();
  
  virtual int RequestData(vtkInformation* request,
                          vtkInformationVector** inputVector,
                          vtkInformationVector* outputVector);
  virtual int RequestUpdateExtent(vtkInformation*,
                                  vtkInformationVector**,
                                  vtkInformationVector*);
  virtual int FillInputPortInformation(int port, vtkInformation *info);

  void ContourNode();
  
  double ComputePointValue(int ptIndices[3]);
  
  void ContourNode1D();
  
  vtkContourValues *ContourValues;
  vtkIncrementalPointLocator *Locator;
 
  vtkIdList *CellPts; // for 2D case
  
  vtkHyperOctree *Input;
  vtkPolyData *Output;

  vtkCellArray *NewVerts;
  vtkCellArray *NewLines;
  vtkCellArray *NewPolys;
  
  vtkCellData *InCD;
  vtkPointData *InPD;
  vtkCellData *OutCD;
  vtkPointData *OutPD;
  vtkOrderedTriangulator *Triangulator;
  
  vtkHyperOctreeCursor *Sibling; // to avoid allocation in the loop
  
  
  vtkDoubleArray *CellScalars;
  vtkTetra *Tetra;
  vtkDoubleArray *TetScalars;
  
  vtkPolygon *Polygon;
  
  vtkHyperOctreeCursor *Cursor;
  vtkHyperOctreeCursor *NeighborCursor;
  
  vtkIdType CellTypeCounter[65536]; // up-to-65536 points per octant
  vtkIdType TotalCounter;
  vtkIdType TemplateCounter; // record the number of octants that succceed
  // to use the template triangulator
  
  vtkDataArray *InScalars;
  vtkHyperOctreeContourPointsGrabber *Grabber;
  
  vtkDoubleArray *PointScalars;
  int SortBy;
  int Iter; // iterate over contour values in case of VTK_SORT_BY_CELL

  vtkLine *Line;
  double LeftValue;
  double LeftCoord;
  
  //BTX
  friend class vtkHyperOctreeContourPointsGrabber;
  //ETX
private:
  vtkHyperOctreeContourFilter(const vtkHyperOctreeContourFilter&);  // Not implemented.
  void operator=(const vtkHyperOctreeContourFilter&);  // Not implemented.
};
#endif