vtkBSPIntersections.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkBSPIntersections.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 vtkBSPIntersections_h
#define vtkBSPIntersections_h
 
#include "vtkCommonDataModelModule.h" // For export macro
#include "vtkObject.h"
 
class vtkTimeStamp;
class vtkCell;
class vtkKdNode;
class vtkBSPCuts;
 
class VTKCOMMONDATAMODEL_EXPORT vtkBSPIntersections : public vtkObject
{
public:
  vtkTypeMacro(vtkBSPIntersections, vtkObject);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
  static vtkBSPIntersections* New();
 
  void SetCuts(vtkBSPCuts* cuts);
  vtkGetObjectMacro(Cuts, vtkBSPCuts);
 
  int GetBounds(double* bounds);
 
  int GetNumberOfRegions();
 
  int GetRegionBounds(int regionID, double bounds[6]);
 
  int GetRegionDataBounds(int regionID, double bounds[6]);
 
 
  int IntersectsBox(int regionId, double* x);
  int IntersectsBox(int regionId, double x0, double x1, double y0, double y1, double z0, double z1);
 
 
  int IntersectsBox(int* ids, int len, double* x);
  int IntersectsBox(
    int* ids, int len, double x0, double x1, double y0, double y1, double z0, double z1);
 
  int IntersectsSphere2(int regionId, double x, double y, double z, double rSquared);
 
  int IntersectsSphere2(int* ids, int len, double x, double y, double z, double rSquared);
 
  int IntersectsCell(int regionId, vtkCell* cell, int cellRegion = -1);
 
  int IntersectsCell(int* ids, int len, vtkCell* cell, int cellRegion = -1);
 
  vtkGetMacro(ComputeIntersectionsUsingDataBounds, int);
  void SetComputeIntersectionsUsingDataBounds(int c);
  void ComputeIntersectionsUsingDataBoundsOn();
  void ComputeIntersectionsUsingDataBoundsOff();
 
protected:
  vtkBSPIntersections();
  ~vtkBSPIntersections() override;
 
  vtkGetMacro(RegionListBuildTime, vtkMTimeType);
 
  int BuildRegionList();
 
  vtkKdNode** GetRegionList() { return this->RegionList; }
 
  double CellBoundsCache[6]; // to speed cell intersection queries
 
  enum
  {
    XDIM = 0, // don't change these values
    YDIM = 1,
    ZDIM = 2
  };
 
private:
  static int NumberOfLeafNodes(vtkKdNode* kd);
  static void SetIDRanges(vtkKdNode* kd, int& min, int& max);
 
  int SelfRegister(vtkKdNode* kd);
 
  static void SetCellBounds(vtkCell* cell, double* bounds);
 
  int _IntersectsBox(vtkKdNode* node, int* ids, int len, double x0, double x1, double y0, double y1,
    double z0, double z1);
 
  int _IntersectsSphere2(
    vtkKdNode* node, int* ids, int len, double x, double y, double z, double rSquared);
 
  int _IntersectsCell(vtkKdNode* node, int* ids, int len, vtkCell* cell, int cellRegion = -1);
 
  vtkBSPCuts* Cuts;
 
  int NumberOfRegions;
  vtkKdNode** RegionList;
 
  vtkTimeStamp RegionListBuildTime;
 
  int ComputeIntersectionsUsingDataBounds;
 
  vtkBSPIntersections(const vtkBSPIntersections&) = delete;
  void operator=(const vtkBSPIntersections&) = delete;
};
#endif