vtkStaticPointLocator.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkStaticPointLocator.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 vtkStaticPointLocator_h
#define vtkStaticPointLocator_h
 
#include "vtkAbstractPointLocator.h"
#include "vtkCommonDataModelModule.h" // For export macro
 
class vtkIdList;
struct vtkBucketList;
 
class VTKCOMMONDATAMODEL_EXPORT vtkStaticPointLocator : public vtkAbstractPointLocator
{
public:
  static vtkStaticPointLocator* New();
 
 
  vtkTypeMacro(vtkStaticPointLocator, vtkAbstractPointLocator);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
 
  vtkSetClampMacro(NumberOfPointsPerBucket, int, 1, VTK_INT_MAX);
  vtkGetMacro(NumberOfPointsPerBucket, int);
 
 
  vtkSetVector3Macro(Divisions, int);
  vtkGetVectorMacro(Divisions, int, 3);
 
  // Re-use any superclass signatures that we don't override.
  using vtkAbstractPointLocator::FindClosestNPoints;
  using vtkAbstractPointLocator::FindClosestPoint;
  using vtkAbstractPointLocator::FindPointsWithinRadius;
  using vtkAbstractPointLocator::GetBounds;
 
  vtkIdType FindClosestPoint(const double x[3]) override;
 
 
  vtkIdType FindClosestPointWithinRadius(double radius, const double x[3], double& dist2) override;
  virtual vtkIdType FindClosestPointWithinRadius(
    double radius, const double x[3], double inputDataLength, double& dist2);
 
  void FindClosestNPoints(int N, const double x[3], vtkIdList* result) override;
 
  void FindPointsWithinRadius(double R, const double x[3], vtkIdList* result) override;
 
  int IntersectWithLine(double a0[3], double a1[3], double tol, double& t, double lineX[3],
    double ptX[3], vtkIdType& ptId);
 
  void MergePoints(double tol, vtkIdType* mergeMap);
 
 
  void Initialize() override;
  void FreeSearchStructure() override;
  void BuildLocator() override;
  void BuildLocator(const double* inBounds);
 
  void GenerateRepresentation(int level, vtkPolyData* pd) override;
 
  vtkIdType GetNumberOfPointsInBucket(vtkIdType bNum);
 
  void GetBucketIds(vtkIdType bNum, vtkIdList* bList);
 
 
  vtkSetClampMacro(MaxNumberOfBuckets, vtkIdType, 1000, VTK_ID_MAX);
  vtkGetMacro(MaxNumberOfBuckets, vtkIdType);
 
  bool GetLargeIds() { return this->LargeIds; }
 
 
  virtual double* GetSpacing() { return this->H; }
  virtual void GetSpacing(double spacing[3])
  {
    spacing[0] = this->H[0];
    spacing[1] = this->H[1];
    spacing[2] = this->H[2];
  }
 
protected:
  vtkStaticPointLocator();
  ~vtkStaticPointLocator() override;
 
  int NumberOfPointsPerBucket;  // Used with AutomaticOn to control subdivide
  int Divisions[3];             // Number of sub-divisions in x-y-z directions
  double H[3];                  // Width of each bucket in x-y-z directions
  vtkBucketList* Buckets;       // Lists of point ids in each bucket
  vtkIdType MaxNumberOfBuckets; // Maximum number of buckets in locator
  bool LargeIds;                // indicate whether integer ids are small or large
 
private:
  vtkStaticPointLocator(const vtkStaticPointLocator&) = delete;
  void operator=(const vtkStaticPointLocator&) = delete;
};
 
#endif