quickly locate points in 3-space More...

#include <vtkPointLocator.h>

Inheritance diagram for vtkPointLocator:

Collaboration diagram for vtkPointLocator:

Public Member Functions
vtkIdType	FindClosestPoint (const double x[3]) override
	Given a position x, return the id of the point closest to it.

int	InitPointInsertion (vtkPoints *newPts, const double bounds[6]) override
	Initialize the point insertion process.

int	InitPointInsertion (vtkPoints *newPts, const double bounds[6], vtkIdType estNumPts) override
	Initialize the point insertion process.

void	InsertPoint (vtkIdType ptId, const double x[3]) override
	Incrementally insert a point into search structure with a particular index value.

vtkIdType	InsertNextPoint (const double x[3]) override
	Incrementally insert a point into search structure.

int	InsertUniquePoint (const double x[3], vtkIdType &ptId) override
	Determine whether point given by x[3] has been inserted into points list.

vtkIdType	FindClosestInsertedPoint (const double x[3]) override
	Given a position x, return the id of the point closest to it.

void	FindClosestNPoints (int N, const double x[3], vtkIdList *result) override
	Find the closest N points to a position.

void	FindPointsWithinRadius (double R, const double x[3], vtkIdList *result) override
	Find all points within a specified radius R of position x.

virtual vtkIdList *	GetPointsInBucket (const double x[3], int ijk[3])
	Given a position x, return the list of points in the bucket that contains the point.

virtual vtkIdType	FindClosestPoint (const double x[3])=0
	Given a position x, return the id of the point closest to it.

vtkIdType	FindClosestPoint (double x, double y, double z)


virtual void	SetDivisions (int, int, int)
	Set the number of divisions in x-y-z directions.

virtual void	SetDivisions (int[3])
	Set the number of divisions in x-y-z directions.

virtual int *	GetDivisions ()
	Set the number of divisions in x-y-z directions.

virtual void	GetDivisions (int data[3])
	Set the number of divisions in x-y-z directions.


virtual void	SetNumberOfPointsPerBucket (int)
	Specify the average number of points in each bucket.

virtual int	GetNumberOfPointsPerBucket ()
	Specify the average number of points in each bucket.


vtkIdType	FindClosestPointWithinRadius (double radius, const double x[3], double &dist2) override
	Given a position x and a radius r, return the id of the point closest to the point in that radius.

virtual vtkIdType	FindClosestPointWithinRadius (double radius, const double x[3], double inputDataLength, double &dist2)
	Given a position x and a radius r, return the id of the point closest to the point in that radius.


vtkIdType	IsInsertedPoint (double x, double y, double z) override
	Determine whether point given by x[3] has been inserted into points list.

vtkIdType	IsInsertedPoint (const double x[3]) override
	Determine whether point given by x[3] has been inserted into points list.


virtual void	FindDistributedPoints (int N, const double x[3], vtkIdList *result, int M)
	Find the closest points to a position such that each octant of space around the position contains at least N points.

virtual void	FindDistributedPoints (int N, double x, double y, double z, vtkIdList *result, int M)
	Find the closest points to a position such that each octant of space around the position contains at least N points.


virtual vtkPoints *	GetPoints ()
	Provide an accessor to the points.


void	Initialize () override
	See vtkLocator interface documentation.

void	FreeSearchStructure () override
	See vtkLocator interface documentation.

void	BuildLocator () override
	See vtkLocator interface documentation.

void	GenerateRepresentation (int level, vtkPolyData *pd) override
	See vtkLocator interface documentation.

Public Member Functions inherited from vtkIncrementalPointLocator
virtual vtkTypeBool	IsA (const char *type)
	Standard type and print methods.

vtkIncrementalPointLocator *	NewInstance () const

void	PrintSelf (ostream &os, vtkIndent indent) override
	Standard type and print methods.

virtual vtkIdType	FindClosestInsertedPoint (const double x[3])=0
	Given a point x assumed to be covered by the search structure, return the index of the closest point (already inserted to the search structure) regardless of the associated minimum squared distance relative to the squared insertion-tolerance distance.

virtual int	InitPointInsertion (vtkPoints *newPts, const double bounds[6])=0
	Initialize the point insertion process.

virtual int	InitPointInsertion (vtkPoints *newPts, const double bounds[6], vtkIdType estSize)=0
	Initialize the point insertion process.

virtual vtkIdType	IsInsertedPoint (double x, double y, double z)=0
	Determine whether or not a given point has been inserted.

virtual vtkIdType	IsInsertedPoint (const double x[3])=0
	Determine whether or not a given point has been inserted.

virtual int	InsertUniquePoint (const double x[3], vtkIdType &ptId)=0
	Insert a point unless there has been a duplicate in the search structure.

virtual void	InsertPoint (vtkIdType ptId, const double x[3])=0
	Insert a given point with a specified point index ptId.

virtual vtkIdType	InsertNextPoint (const double x[3])=0
	Insert a given point and return the point index.

Public Member Functions inherited from vtkAbstractPointLocator
virtual vtkIdType	FindClosestPointWithinRadius (double radius, const double x[3], double &dist2)=0
	Given a position x and a radius r, return the id of the point closest to the point in that radius.

vtkIdType	FindClosestPoint (double x, double y, double z)
	Given a position x, return the id of the point closest to it.

void	FindClosestNPoints (int N, double x, double y, double z, vtkIdList *result)
	Find the closest N points to a position.

void	FindPointsWithinRadius (double R, double x, double y, double z, vtkIdList *result)
	Find all points within a specified radius R of position x.

virtual double *	GetBounds ()
	Provide an accessor to the bounds.

virtual void	GetBounds (double *)
	Provide an accessor to the bounds.

virtual vtkIdType	GetNumberOfBuckets ()
	Return the total number of buckets in the locator.

vtkAbstractPointLocator *	NewInstance () const
	Standard type and print methods.

Public Member Functions inherited from vtkLocator
virtual void	Update ()
	Cause the locator to rebuild itself if it or its input dataset has changed.

virtual void	Initialize ()
	Initialize locator.

virtual void	BuildLocator ()=0
	Build the locator from the input dataset.

virtual void	FreeSearchStructure ()=0
	Free the memory required for the spatial data structure.

virtual void	GenerateRepresentation (int level, vtkPolyData *pd)=0
	Method to build a representation at a particular level.

virtual void	SetDataSet (vtkDataSet *)
	Build the locator from the points/cells defining this dataset.

virtual vtkDataSet *	GetDataSet ()
	Build the locator from the points/cells defining this dataset.

virtual void	SetMaxLevel (int)
	Set the maximum allowable level for the tree.

virtual int	GetMaxLevel ()
	Set the maximum allowable level for the tree.

virtual int	GetLevel ()
	Get the level of the locator (determined automatically if Automatic is true).

virtual void	SetAutomatic (vtkTypeBool)
	Boolean controls whether locator depth/resolution of locator is computed automatically from average number of entities in bucket.

virtual vtkTypeBool	GetAutomatic ()
	Boolean controls whether locator depth/resolution of locator is computed automatically from average number of entities in bucket.

virtual void	AutomaticOn ()
	Boolean controls whether locator depth/resolution of locator is computed automatically from average number of entities in bucket.

virtual void	AutomaticOff ()
	Boolean controls whether locator depth/resolution of locator is computed automatically from average number of entities in bucket.

virtual void	SetTolerance (double)
	Specify absolute tolerance (in world coordinates) for performing geometric operations.

virtual double	GetTolerance ()
	Specify absolute tolerance (in world coordinates) for performing geometric operations.

virtual vtkMTimeType	GetBuildTime ()
	Return the time of the last data structure build.

void	Register (vtkObjectBase *o) override
	Handle the PointSet <-> Locator loop.

void	UnRegister (vtkObjectBase *o) override
	Handle the PointSet <-> Locator loop.

vtkLocator *	NewInstance () const
	Standard type and print methods.

Public Member Functions inherited from vtkObject
	vtkBaseTypeMacro (vtkObject, vtkObjectBase)

virtual void	DebugOn ()
	Turn debugging output on.

virtual void	DebugOff ()
	Turn debugging output off.

bool	GetDebug ()
	Get the value of the debug flag.

void	SetDebug (bool debugFlag)
	Set the value of the debug flag.

virtual void	Modified ()
	Update the modification time for this object.

virtual vtkMTimeType	GetMTime ()
	Return this object's modified time.

void	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses.

void	RemoveObserver (unsigned long tag)

void	RemoveObservers (unsigned long event)

void	RemoveObservers (const char *event)

void	RemoveAllObservers ()

vtkTypeBool	HasObserver (unsigned long event)

vtkTypeBool	HasObserver (const char *event)

int	InvokeEvent (unsigned long event)

int	InvokeEvent (const char *event)

unsigned long	AddObserver (unsigned long event, vtkCommand *, float priority=0.0f)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

unsigned long	AddObserver (const char event, vtkCommand , float priority=0.0f)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

vtkCommand *	GetCommand (unsigned long tag)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

void	RemoveObserver (vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

void	RemoveObservers (unsigned long event, vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

void	RemoveObservers (const char event, vtkCommand )
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

vtkTypeBool	HasObserver (unsigned long event, vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

vtkTypeBool	HasObserver (const char event, vtkCommand )
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::*callback)(), float priority=0.0f)
	Overloads to AddObserver that allow developers to add class member functions as callbacks for events.

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::callback)(vtkObject , unsigned long, void *), float priority=0.0f)
	Overloads to AddObserver that allow developers to add class member functions as callbacks for events.

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, bool(T::callback)(vtkObject , unsigned long, void *), float priority=0.0f)
	Allow user to set the AbortFlagOn() with the return value of the callback method.

int	InvokeEvent (unsigned long event, void *callData)
	This method invokes an event and return whether the event was aborted or not.

int	InvokeEvent (const char event, void callData)
	This method invokes an event and return whether the event was aborted or not.

Public Member Functions inherited from vtkObjectBase
const char *	GetClassName () const
	Return the class name as a string.

virtual vtkTypeBool	IsA (const char *name)
	Return 1 if this class is the same type of (or a subclass of) the named class.

virtual vtkIdType	GetNumberOfGenerationsFromBase (const char *name)
	Given the name of a base class of this class type, return the distance of inheritance between this class type and the named class (how many generations of inheritance are there between this class and the named class).

virtual void	Delete ()
	Delete a VTK object.

virtual void	FastDelete ()
	Delete a reference to this object.

void	InitializeObjectBase ()

void	Print (ostream &os)
	Print an object to an ostream.

virtual void	Register (vtkObjectBase *o)
	Increase the reference count (mark as used by another object).

virtual void	UnRegister (vtkObjectBase *o)
	Decrease the reference count (release by another object).

int	GetReferenceCount ()
	Return the current reference count of this object.

void	SetReferenceCount (int)
	Sets the reference count.

bool	GetIsInMemkind () const
	A local state flag that remembers whether this object lives in the normal or extended memory space.

virtual void	PrintHeader (ostream &os, vtkIndent indent)
	Methods invoked by print to print information about the object including superclasses.

virtual void	PrintTrailer (ostream &os, vtkIndent indent)
	Methods invoked by print to print information about the object including superclasses.

Static Public Member Functions
static vtkPointLocator *	New ()
	Construct with automatic computation of divisions, averaging 25 points per bucket.

Static Public Member Functions inherited from vtkIncrementalPointLocator
static vtkTypeBool	IsTypeOf (const char *type)

static vtkIncrementalPointLocator *	SafeDownCast (vtkObjectBase *o)

Static Public Member Functions inherited from vtkAbstractPointLocator
static vtkTypeBool	IsTypeOf (const char *type)
	Standard type and print methods.

static vtkAbstractPointLocator *	SafeDownCast (vtkObjectBase *o)
	Standard type and print methods.

Static Public Member Functions inherited from vtkLocator
static vtkTypeBool	IsTypeOf (const char *type)
	Standard type and print methods.

static vtkLocator *	SafeDownCast (vtkObjectBase *o)
	Standard type and print methods.

Static Public Member Functions inherited from vtkObject
static vtkObject *	New ()
	Create an object with Debug turned off, modified time initialized to zero, and reference counting on.

static void	BreakOnError ()
	This method is called when vtkErrorMacro executes.

static void	SetGlobalWarningDisplay (int val)
	This is a global flag that controls whether any debug, warning or error messages are displayed.

static void	GlobalWarningDisplayOn ()
	This is a global flag that controls whether any debug, warning or error messages are displayed.

static void	GlobalWarningDisplayOff ()
	This is a global flag that controls whether any debug, warning or error messages are displayed.

static int	GetGlobalWarningDisplay ()
	This is a global flag that controls whether any debug, warning or error messages are displayed.

Static Public Member Functions inherited from vtkObjectBase
static vtkTypeBool	IsTypeOf (const char *name)
	Return 1 if this class type is the same type of (or a subclass of) the named class.

static vtkIdType	GetNumberOfGenerationsFromBaseType (const char *name)
	Given a the name of a base class of this class type, return the distance of inheritance between this class type and the named class (how many generations of inheritance are there between this class and the named class).

static vtkObjectBase *	New ()
	Create an object with Debug turned off, modified time initialized to zero, and reference counting on.

static void	SetMemkindDirectory (const char *directoryname)
	The name of a directory, ideally mounted -o dax, to memory map an extended memory space within.

static bool	GetUsingMemkind ()
	A global state flag that controls whether vtkObjects are constructed in the usual way (the default) or within the extended memory space.

Protected Member Functions
	vtkPointLocator ()

	~vtkPointLocator () override

void	GetBucketNeighbors (vtkNeighborPoints *buckets, const int ijk[3], const int ndivs[3], int level)

void	GetOverlappingBuckets (vtkNeighborPoints *buckets, const double x[3], const int ijk[3], double dist, int level)

void	GetOverlappingBuckets (vtkNeighborPoints *buckets, const double x[3], double dist, int prevMinLevel[3], int prevMaxLevel[3])

void	GenerateFace (int face, int i, int j, int k, vtkPoints pts, vtkCellArray polys)

double	Distance2ToBucket (const double x[3], const int nei[3])

double	Distance2ToBounds (const double x[3], const double bounds[6])

void	GetBucketIndices (const double *x, int ijk[3]) const

vtkIdType	GetBucketIndex (const double *x) const

void	ComputePerformanceFactors ()

Protected Member Functions inherited from vtkIncrementalPointLocator
virtual vtkObjectBase *	NewInstanceInternal () const
	Standard type and print methods.

	vtkIncrementalPointLocator ()

	~vtkIncrementalPointLocator () override

Protected Member Functions inherited from vtkAbstractPointLocator
	vtkAbstractPointLocator ()

	~vtkAbstractPointLocator () override

Protected Member Functions inherited from vtkLocator
	vtkLocator ()

	~vtkLocator () override

void	ReportReferences (vtkGarbageCollector *) override

Protected Member Functions inherited from vtkObject
	vtkObject ()

	~vtkObject () override

void	RegisterInternal (vtkObjectBase *, vtkTypeBool check) override

void	UnRegisterInternal (vtkObjectBase *, vtkTypeBool check) override

void	InternalGrabFocus (vtkCommand mouseEvents, vtkCommand keypressEvents=nullptr)
	These methods allow a command to exclusively grab all events.

void	InternalReleaseFocus ()
	These methods allow a command to exclusively grab all events.

Protected Member Functions inherited from vtkObjectBase
	vtkObjectBase ()

virtual	~vtkObjectBase ()

virtual void	RegisterInternal (vtkObjectBase *, vtkTypeBool check)

virtual void	UnRegisterInternal (vtkObjectBase *, vtkTypeBool check)

virtual void	ReportReferences (vtkGarbageCollector *)

	vtkObjectBase (const vtkObjectBase &)

void	operator= (const vtkObjectBase &)

Protected Attributes
vtkPoints *	Points

int	Divisions [3]

int	NumberOfPointsPerBucket

vtkIdList **	HashTable

double	H [3]

double	InsertionTol2

vtkIdType	InsertionPointId

double	InsertionLevel

double	HX

double	HY

double	HZ

double	FX

double	FY

double	FZ

double	BX

double	BY

double	BZ

vtkIdType	XD

vtkIdType	YD

vtkIdType	ZD

vtkIdType	SliceSize

Protected Attributes inherited from vtkAbstractPointLocator
double	Bounds [6]

vtkIdType	NumberOfBuckets

Protected Attributes inherited from vtkLocator
vtkDataSet *	DataSet

vtkTypeBool	Automatic

double	Tolerance

int	MaxLevel

int	Level

vtkTimeStamp	BuildTime

Protected Attributes inherited from vtkObject
bool	Debug

vtkTimeStamp	MTime

vtkSubjectHelper *	SubjectHelper

Protected Attributes inherited from vtkObjectBase
std::atomic< int32_t >	ReferenceCount

vtkWeakPointerBase **	WeakPointers

typedef vtkIncrementalPointLocator	Superclass
	Standard methods for type management and printing.

static vtkTypeBool	IsTypeOf (const char *type)
	Standard methods for type management and printing.

static vtkPointLocator *	SafeDownCast (vtkObjectBase *o)
	Standard methods for type management and printing.

virtual vtkTypeBool	IsA (const char *type)
	Standard methods for type management and printing.

vtkPointLocator *	NewInstance () const
	Standard methods for type management and printing.

void	PrintSelf (ostream &os, vtkIndent indent) override
	Standard methods for type management and printing.

virtual vtkObjectBase *	NewInstanceInternal () const
	Standard methods for type management and printing.

Additional Inherited Members
Public Types inherited from vtkIncrementalPointLocator
typedef vtkAbstractPointLocator	Superclass

Public Types inherited from vtkAbstractPointLocator
typedef vtkLocator	Superclass
	Standard type and print methods.

Public Types inherited from vtkLocator
typedef vtkObject	Superclass
	Standard type and print methods.

Static Protected Member Functions inherited from vtkObjectBase
static vtkMallocingFunction	GetCurrentMallocFunction ()

static vtkReallocingFunction	GetCurrentReallocFunction ()

static vtkFreeingFunction	GetCurrentFreeFunction ()

static vtkFreeingFunction	GetAlternateFreeFunction ()

Detailed Description

quickly locate points in 3-space

vtkPointLocator is a spatial search object to quickly locate points in 3D. vtkPointLocator works by dividing a specified region of space into a regular array of "rectangular" buckets, and then keeping a list of points that lie in each bucket. Typical operation involves giving a position in 3D and finding the closest point.

vtkPointLocator has two distinct methods of interaction. In the first method, you supply it with a dataset, and it operates on the points in the dataset. In the second method, you supply it with an array of points, and the object operates on the array.

Warning: Many other types of spatial locators have been developed such as octrees and kd-trees. These are often more efficient for the operations described here.

See also: vtkCellPicker vtkPointPicker vtkStaticPointLocator

Online Examples:

PointLocatorFindPointsWithinRadiusDemo

PointLocator

PointLocatorRadius

PointLocatorVisualization

Definition at line 99 of file vtkPointLocator.h.

Member Typedef Documentation

◆ Superclass

typedef vtkIncrementalPointLocator vtkPointLocator::Superclass

Standard methods for type management and printing.

Definition at line 112 of file vtkPointLocator.h.

Constructor & Destructor Documentation

◆ vtkPointLocator()

vtkPointLocator::vtkPointLocator ( )

protected

◆ ~vtkPointLocator()

vtkPointLocator::~vtkPointLocator ( )

overrideprotected

Member Function Documentation

◆ New()

static vtkPointLocator * vtkPointLocator::New ( )

static

Construct with automatic computation of divisions, averaging 25 points per bucket.

◆ IsTypeOf()

static vtkTypeBool vtkPointLocator::IsTypeOf ( const char * type )

static

Standard methods for type management and printing.

◆ IsA()

virtual vtkTypeBool vtkPointLocator::IsA ( const char * type )

virtual

Standard methods for type management and printing.

Reimplemented from vtkIncrementalPointLocator.

Reimplemented in vtkMergePoints, vtkNonMergingPointLocator, and vtkSMPMergePoints.

◆ SafeDownCast()

static vtkPointLocator * vtkPointLocator::SafeDownCast ( vtkObjectBase * o )

static

Standard methods for type management and printing.

◆ NewInstanceInternal()

virtual vtkObjectBase * vtkPointLocator::NewInstanceInternal ( ) const

protectedvirtual

Standard methods for type management and printing.

Reimplemented from vtkIncrementalPointLocator.

Reimplemented in vtkMergePoints, vtkNonMergingPointLocator, and vtkSMPMergePoints.

◆ NewInstance()

vtkPointLocator * vtkPointLocator::NewInstance ( ) const

Standard methods for type management and printing.

◆ PrintSelf()

void vtkPointLocator::PrintSelf	(	ostream &	os,
		vtkIndent	indent
	)

overridevirtual

Standard methods for type management and printing.

Reimplemented from vtkIncrementalPointLocator.

Reimplemented in vtkSMPMergePoints.

◆ SetDivisions() [1/2]

virtual void vtkPointLocator::SetDivisions	(	int	,
		int	,
		int
	)

virtual

Set the number of divisions in x-y-z directions.

◆ SetDivisions() [2/2]

virtual void vtkPointLocator::SetDivisions ( int [3] )

virtual

Set the number of divisions in x-y-z directions.

◆ GetDivisions() [1/2]

virtual int * vtkPointLocator::GetDivisions ( )

virtual

Set the number of divisions in x-y-z directions.

◆ GetDivisions() [2/2]

virtual void vtkPointLocator::GetDivisions ( int data[3] )

virtual

Set the number of divisions in x-y-z directions.

◆ SetNumberOfPointsPerBucket()

virtual void vtkPointLocator::SetNumberOfPointsPerBucket ( int )

virtual

Specify the average number of points in each bucket.

◆ GetNumberOfPointsPerBucket()

virtual int vtkPointLocator::GetNumberOfPointsPerBucket ( )

virtual

Specify the average number of points in each bucket.

◆ FindClosestPoint() [1/3]

vtkIdType vtkPointLocator::FindClosestPoint ( const double x[3] )

overridevirtual

Given a position x, return the id of the point closest to it.

Alternative method requires separate x-y-z values. These methods are thread safe if BuildLocator() is directly or indirectly called from a single thread first.

Implements vtkAbstractPointLocator.

◆ FindClosestPointWithinRadius() [1/2]

vtkIdType vtkPointLocator::FindClosestPointWithinRadius	(	double	radius,
		const double	x[3],
		double &	dist2
	)

overridevirtual

Given a position x and a radius r, return the id of the point closest to the point in that radius.

These methods are thread safe if BuildLocator() is directly or indirectly called from a single thread first. dist2 returns the squared distance to the point.

Implements vtkAbstractPointLocator.

◆ FindClosestPointWithinRadius() [2/2]

virtual vtkIdType vtkPointLocator::FindClosestPointWithinRadius	(	double	radius,
		const double	x[3],
		double	inputDataLength,
		double &	dist2
	)

virtual

Given a position x and a radius r, return the id of the point closest to the point in that radius.

These methods are thread safe if BuildLocator() is directly or indirectly called from a single thread first. dist2 returns the squared distance to the point.

◆ InitPointInsertion() [1/2]

int vtkPointLocator::InitPointInsertion	(	vtkPoints *	newPts,
		const double	bounds[6]
	)

overridevirtual

Initialize the point insertion process.

The newPts is an object representing point coordinates into which incremental insertion methods place their data. Bounds are the box that the points lie in. Not thread safe.

Implements vtkIncrementalPointLocator.

◆ InitPointInsertion() [2/2]

int vtkPointLocator::InitPointInsertion	(	vtkPoints *	newPts,
		const double	bounds[6],
		vtkIdType	estNumPts
	)

overridevirtual

Initialize the point insertion process.

The newPts is an object representing point coordinates into which incremental insertion methods place their data. Bounds are the box that the points lie in. Not thread safe.

Implements vtkIncrementalPointLocator.

◆ InsertPoint()

void vtkPointLocator::InsertPoint	(	vtkIdType	ptId,
		const double	x[3]
	)

overridevirtual

Incrementally insert a point into search structure with a particular index value.

You should use the method IsInsertedPoint() to see whether this point has already been inserted (that is, if you desire to prevent duplicate points). Before using this method you must make sure that newPts have been supplied, the bounds has been set properly, and that divs are properly set. (See InitPointInsertion().) Not thread safe.

Implements vtkIncrementalPointLocator.

◆ InsertNextPoint()

vtkIdType vtkPointLocator::InsertNextPoint ( const double x[3] )

overridevirtual

Incrementally insert a point into search structure.

The method returns the insertion location (i.e., point id). You should use the method IsInsertedPoint() to see whether this point has already been inserted (that is, if you desire to prevent duplicate points). Before using this method you must make sure that newPts have been supplied, the bounds has been set properly, and that divs are properly set. (See InitPointInsertion().) Not thread safe.

Implements vtkIncrementalPointLocator.

◆ IsInsertedPoint() [1/2]

vtkIdType vtkPointLocator::IsInsertedPoint	(	double	x,
		double	y,
		double	z
	)

inlineoverridevirtual

Determine whether point given by x[3] has been inserted into points list.

Return id of previously inserted point if this is true, otherwise return -1. This method is thread safe.

Implements vtkIncrementalPointLocator.

Definition at line 201 of file vtkPointLocator.h.

◆ IsInsertedPoint() [2/2]

vtkIdType vtkPointLocator::IsInsertedPoint ( const double x[3] )

overridevirtual

Determine whether point given by x[3] has been inserted into points list.

Return id of previously inserted point if this is true, otherwise return -1. This method is thread safe.

Implements vtkIncrementalPointLocator.

◆ InsertUniquePoint()

int vtkPointLocator::InsertUniquePoint	(	const double	x[3],
		vtkIdType &	ptId
	)

overridevirtual

Determine whether point given by x[3] has been inserted into points list.

Return 0 if point was already in the list, otherwise return 1. If the point was not in the list, it will be ADDED. In either case, the id of the point (newly inserted or not) is returned in the ptId argument. Note this combines the functionality of IsInsertedPoint() followed by a call to InsertNextPoint(). This method is not thread safe.

Implements vtkIncrementalPointLocator.

◆ FindClosestInsertedPoint()

vtkIdType vtkPointLocator::FindClosestInsertedPoint ( const double x[3] )

overridevirtual

Given a position x, return the id of the point closest to it.

This method is used when performing incremental point insertion. Note that -1 indicates that no point was found. This method is thread safe if BuildLocator() is directly or indirectly called from a single thread first.

Implements vtkIncrementalPointLocator.

◆ FindClosestNPoints()

void vtkPointLocator::FindClosestNPoints	(	int	N,
		const double	x[3],
		vtkIdList *	result
	)

overridevirtual

Find the closest N points to a position.

This returns the closest N points to a position. A faster method could be created that returned N close points to a position, but necessarily the exact N closest. The returned points are sorted from closest to farthest. These methods are thread safe if BuildLocator() is directly or indirectly called from a single thread first.

Implements vtkAbstractPointLocator.

◆ FindDistributedPoints() [1/2]

virtual void vtkPointLocator::FindDistributedPoints	(	int	N,
		const double	x[3],
		vtkIdList *	result,
		int	M
	)

virtual

Find the closest points to a position such that each octant of space around the position contains at least N points.

Loosely limit the search to a maximum number of points evaluated, M. These methods are thread safe if BuildLocator() is directly or indirectly called from a single thread first.

◆ FindDistributedPoints() [2/2]

virtual void vtkPointLocator::FindDistributedPoints	(	int	N,
		double	x,
		double	y,
		double	z,
		vtkIdList *	result,
		int	M
	)

virtual

Find the closest points to a position such that each octant of space around the position contains at least N points.

Loosely limit the search to a maximum number of points evaluated, M. These methods are thread safe if BuildLocator() is directly or indirectly called from a single thread first.

◆ FindPointsWithinRadius()

void vtkPointLocator::FindPointsWithinRadius	(	double	R,
		const double	x[3],
		vtkIdList *	result
	)

overridevirtual

Find all points within a specified radius R of position x.

The result is not sorted in any specific manner. These methods are thread safe if BuildLocator() is directly or indirectly called from a single thread first.

Implements vtkAbstractPointLocator.

◆ GetPointsInBucket()

virtual vtkIdList * vtkPointLocator::GetPointsInBucket	(	const double	x[3],
		int	ijk[3]
	)

virtual

Given a position x, return the list of points in the bucket that contains the point.

It is possible that nullptr is returned. The user provides an ijk array that is the indices into the locator. This method is thread safe.

◆ GetPoints()

virtual vtkPoints * vtkPointLocator::GetPoints ( )

virtual

Provide an accessor to the points.

◆ Initialize()

void vtkPointLocator::Initialize ( )

overridevirtual

See vtkLocator interface documentation.

These methods are not thread safe.

Reimplemented from vtkLocator.

◆ FreeSearchStructure()

void vtkPointLocator::FreeSearchStructure ( )

overridevirtual

See vtkLocator interface documentation.

These methods are not thread safe.

Implements vtkLocator.

◆ BuildLocator()

void vtkPointLocator::BuildLocator ( )

overridevirtual

See vtkLocator interface documentation.

These methods are not thread safe.

Implements vtkLocator.

◆ GenerateRepresentation()

void vtkPointLocator::GenerateRepresentation	(	int	level,
		vtkPolyData *	pd
	)

overridevirtual

See vtkLocator interface documentation.

These methods are not thread safe.

Implements vtkLocator.

◆ GetBucketNeighbors()

void vtkPointLocator::GetBucketNeighbors	(	vtkNeighborPoints *	buckets,
		const int	ijk[3],
		const int	ndivs[3],
		int	level
	)

protected

◆ GetOverlappingBuckets() [1/2]

void vtkPointLocator::GetOverlappingBuckets	(	vtkNeighborPoints *	buckets,
		const double	x[3],
		const int	ijk[3],
		double	dist,
		int	level
	)

protected

◆ GetOverlappingBuckets() [2/2]

void vtkPointLocator::GetOverlappingBuckets	(	vtkNeighborPoints *	buckets,
		const double	x[3],
		double	dist,
		int	prevMinLevel[3],
		int	prevMaxLevel[3]
	)

protected

◆ GenerateFace()

void vtkPointLocator::GenerateFace	(	int	face,
		int	i,
		int	j,
		int	k,
		vtkPoints *	pts,
		vtkCellArray *	polys
	)

protected

◆ Distance2ToBucket()

double vtkPointLocator::Distance2ToBucket	(	const double	x[3],
		const int	nei[3]
	)

protected

◆ Distance2ToBounds()

double vtkPointLocator::Distance2ToBounds	(	const double	x[3],
		const double	bounds[6]
	)

protected

◆ GetBucketIndices()

void vtkPointLocator::GetBucketIndices	(	const double *	x,
		int	ijk[3]
	)		const

inlineprotected

Definition at line 318 of file vtkPointLocator.h.

◆ GetBucketIndex()

vtkIdType vtkPointLocator::GetBucketIndex ( const double * x ) const

inlineprotected

Definition at line 330 of file vtkPointLocator.h.

◆ ComputePerformanceFactors()

void vtkPointLocator::ComputePerformanceFactors ( )

protected

◆ FindClosestPoint() [2/3]

virtual vtkIdType vtkAbstractPointLocator::FindClosestPoint ( const double x[3] )

virtual

Given a position x, return the id of the point closest to it.

Alternative method requires separate x-y-z values. These methods are thread safe if BuildLocator() is directly or indirectly called from a single thread first.

Implements vtkAbstractPointLocator.

◆ FindClosestPoint() [3/3]

vtkIdType vtkAbstractPointLocator::FindClosestPoint	(	double	x,
		double	y,
		double	z
	)

Member Data Documentation

◆ Points

vtkPoints* vtkPointLocator::Points

protected

Definition at line 303 of file vtkPointLocator.h.

◆ Divisions

int vtkPointLocator::Divisions[3]

protected

Definition at line 304 of file vtkPointLocator.h.

◆ NumberOfPointsPerBucket

int vtkPointLocator::NumberOfPointsPerBucket

protected

Definition at line 305 of file vtkPointLocator.h.

◆ HashTable

vtkIdList** vtkPointLocator::HashTable

protected

Definition at line 306 of file vtkPointLocator.h.

◆ H

double vtkPointLocator::H[3]

protected

Definition at line 307 of file vtkPointLocator.h.

◆ InsertionTol2

double vtkPointLocator::InsertionTol2

protected

Definition at line 309 of file vtkPointLocator.h.

◆ InsertionPointId

vtkIdType vtkPointLocator::InsertionPointId

protected

Definition at line 310 of file vtkPointLocator.h.

◆ InsertionLevel

double vtkPointLocator::InsertionLevel

protected

Definition at line 311 of file vtkPointLocator.h.

◆ HX

double vtkPointLocator::HX

protected

Definition at line 314 of file vtkPointLocator.h.

◆ HY

double vtkPointLocator::HY

protected

Definition at line 314 of file vtkPointLocator.h.

◆ HZ

double vtkPointLocator::HZ

protected

Definition at line 314 of file vtkPointLocator.h.

◆ FX

double vtkPointLocator::FX

protected

Definition at line 315 of file vtkPointLocator.h.

◆ FY

double vtkPointLocator::FY

protected

Definition at line 315 of file vtkPointLocator.h.

◆ FZ

double vtkPointLocator::FZ

protected

Definition at line 315 of file vtkPointLocator.h.

◆ BX

double vtkPointLocator::BX

protected

Definition at line 315 of file vtkPointLocator.h.

◆ BY

double vtkPointLocator::BY

protected

Definition at line 315 of file vtkPointLocator.h.

◆ BZ

double vtkPointLocator::BZ

protected

Definition at line 315 of file vtkPointLocator.h.

◆ XD

vtkIdType vtkPointLocator::XD

protected

Definition at line 316 of file vtkPointLocator.h.

◆ YD

vtkIdType vtkPointLocator::YD

protected

Definition at line 316 of file vtkPointLocator.h.

◆ ZD

vtkIdType vtkPointLocator::ZD

protected

Definition at line 316 of file vtkPointLocator.h.

◆ SliceSize

vtkIdType vtkPointLocator::SliceSize

protected

Definition at line 316 of file vtkPointLocator.h.

The documentation for this class was generated from the following file:

Common/DataModel/vtkPointLocator.h

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ Superclass

Constructor & Destructor Documentation

◆ vtkPointLocator()

◆ ~vtkPointLocator()

Member Function Documentation

◆ New()

◆ IsTypeOf()

◆ IsA()

◆ SafeDownCast()

◆ NewInstanceInternal()

◆ NewInstance()

◆ PrintSelf()

◆ SetDivisions() [1/2]

◆ SetDivisions() [2/2]

◆ GetDivisions() [1/2]

◆ GetDivisions() [2/2]

◆ SetNumberOfPointsPerBucket()

◆ GetNumberOfPointsPerBucket()

◆ FindClosestPoint() [1/3]

◆ FindClosestPointWithinRadius() [1/2]

◆ FindClosestPointWithinRadius() [2/2]

◆ InitPointInsertion() [1/2]

◆ InitPointInsertion() [2/2]

◆ InsertPoint()

◆ InsertNextPoint()

◆ IsInsertedPoint() [1/2]

◆ IsInsertedPoint() [2/2]

◆ InsertUniquePoint()

◆ FindClosestInsertedPoint()

◆ FindClosestNPoints()

◆ FindDistributedPoints() [1/2]

◆ FindDistributedPoints() [2/2]

◆ FindPointsWithinRadius()

◆ GetPointsInBucket()

◆ GetPoints()

◆ Initialize()

◆ FreeSearchStructure()

◆ BuildLocator()

◆ GenerateRepresentation()

◆ GetBucketNeighbors()

◆ GetOverlappingBuckets() [1/2]

◆ GetOverlappingBuckets() [2/2]

◆ GenerateFace()

◆ Distance2ToBucket()

◆ Distance2ToBounds()

◆ GetBucketIndices()

◆ GetBucketIndex()

◆ ComputePerformanceFactors()

◆ FindClosestPoint() [2/3]

◆ FindClosestPoint() [3/3]

Member Data Documentation

◆ Points

◆ Divisions

◆ NumberOfPointsPerBucket

◆ HashTable

◆ H

◆ InsertionTol2

◆ InsertionPointId

◆ InsertionLevel

◆ HX

◆ HY

◆ HZ

◆ FX

◆ FY

◆ FZ

◆ BX

◆ BY

◆ BZ

◆ XD

◆ YD

◆ ZD

◆ SliceSize