vtkBSPCuts.h

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

  Program:   Visualization Toolkit
  Module:    vtkBSPCuts.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.

=========================================================================*/
/*----------------------------------------------------------------------------
 Copyright (c) Sandia Corporation
 See Copyright.txt or http://www.paraview.org/HTML/Copyright.html for details.
----------------------------------------------------------------------------*/

#ifndef vtkBSPCuts_h
#define vtkBSPCuts_h

#include "vtkCommonDataModelModule.h" // For export macro
#include "vtkDataObject.h"

class vtkKdNode;

class VTKCOMMONDATAMODEL_EXPORT vtkBSPCuts : public vtkDataObject
{
public:
  static vtkBSPCuts *New();
  vtkTypeMacro(vtkBSPCuts, vtkDataObject);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  void CreateCuts(double *bounds,
                  int ncuts, int *dim, double *coord,
                  int *lower, int *upper,
                  double *lowerDataCoord, double *upperDataCoord,
                  int *npoints);

  void CreateCuts(vtkKdNode *kd);

  vtkKdNode *GetKdNodeTree(){return this->Top;}

  vtkGetMacro(NumberOfCuts, int);

  int GetArrays(int len, int *dim, double *coord, int *lower, int *upper,
                double *lowerDataCoord, double *upperDataCoord, int *npoints);

  int Equals(vtkBSPCuts *other, double tolerance = 0.0);

  void PrintTree();
  void PrintArrays();


  static vtkBSPCuts* GetData(vtkInformation* info);
  static vtkBSPCuts* GetData(vtkInformationVector* v, int i=0);

  void Initialize() override;


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

protected:

  vtkBSPCuts();
  ~vtkBSPCuts() override;

  static void DeleteAllDescendants(vtkKdNode *kd);

  static int CountNodes(vtkKdNode *kd);
  static void SetMinMaxId(vtkKdNode *kd);
  static void _PrintTree(vtkKdNode *kd, int depth);

  void BuildTree(vtkKdNode *kd, int idx);
  int WriteArray(vtkKdNode *kd, int loc);

  void ResetArrays();
  void AllocateArrays(int size);

  vtkKdNode *Top;

  // required cut information

  int NumberOfCuts;// number of cuts, also length of each array
  int *Dim;        // dimension (x/y/z - 0/1/2) where cut occurs
  double *Coord;   // location of cut along axis
  int *Lower;               // location in arrays of left (lower) child info
  int *Upper;               // location in arrays of right (lower) child info

  // optional cut information

  double *LowerDataCoord;   // coordinate of uppermost data in lower half
  double *UpperDataCoord;   // coordinate of lowermost data in upper half
  int *Npoints;             // number of data values in partition

  double Bounds[6];

  vtkBSPCuts(const vtkBSPCuts&) = delete;
  void operator=(const vtkBSPCuts&) = delete;
};

#endif