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vtkOctreePointLocator Class Reference

an octree spatial decomposition of a set of points More...

#include <vtkOctreePointLocator.h>

Inheritance diagram for vtkOctreePointLocator:
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Collaboration diagram for vtkOctreePointLocator:
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Public Types

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

Public Member Functions

virtual int IsA (const char *type)
 Standard type and print methods. More...
 
vtkOctreePointLocatorNewInstance () const
 
void PrintSelf (ostream &os, vtkIndent indent) override
 Standard type and print methods. More...
 
void GetRegionBounds (int regionID, double bounds[6])
 Get the spatial bounds of octree region. More...
 
void GetRegionDataBounds (int leafNodeID, double bounds[6])
 Get the bounds of the data within the leaf node. More...
 
int GetRegionContainingPoint (double x, double y, double z)
 Get the id of the leaf region containing the specified location. More...
 
void BuildLocator () override
 Create the octree decomposition of the cells of the data set or data sets. More...
 
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. More...
 
void FindPointsWithinRadius (double radius, const double x[3], vtkIdList *result) override
 Find all points within a specified radius of position x. More...
 
void FindClosestNPoints (int N, const double x[3], vtkIdList *result) override
 Find the closest N points to a position. More...
 
vtkIdTypeArrayGetPointsInRegion (int leafNodeId)
 Get a list of the original IDs of all points in a leaf node. More...
 
void FreeSearchStructure () override
 Delete the octree data structure. More...
 
void GenerateRepresentation (int level, vtkPolyData *pd) override
 Create a polydata representation of the boundaries of the octree regions. More...
 
void FindPointsInArea (double *area, vtkIdTypeArray *ids, bool clearArray=true)
 Fill ids with points found in area. More...
 
virtual void SetMaximumPointsPerRegion (int)
 Maximum number of points per spatial region. More...
 
virtual int GetMaximumPointsPerRegion ()
 Maximum number of points per spatial region. More...
 
virtual void SetCreateCubicOctants (int)
 Get/Set macro for CreateCubicOctants. More...
 
virtual int GetCreateCubicOctants ()
 Get/Set macro for CreateCubicOctants. More...
 
virtual double GetFudgeFactor ()
 Some algorithms on octrees require a value that is a very small distance relative to the diameter of the entire space divided by the octree. More...
 
virtual void SetFudgeFactor (double)
 Some algorithms on octrees require a value that is a very small distance relative to the diameter of the entire space divided by the octree. More...
 
doubleGetBounds () override
 Get the spatial bounds of the entire octree space. More...
 
void GetBounds (double *bounds) override
 Get the spatial bounds of the entire octree space. More...
 
virtual int GetNumberOfLeafNodes ()
 The number of leaf nodes of the tree, the spatial regions. More...
 
vtkIdType FindClosestPoint (const double x[3]) override
 Return the Id of the point that is closest to the given point. More...
 
vtkIdType FindClosestPoint (double x, double y, double z, double &dist2)
 Return the Id of the point that is closest to the given point. More...
 
vtkIdType FindClosestPointInRegion (int regionId, double *x, double &dist2)
 Find the Id of the point in the given leaf region which is closest to the given point. More...
 
vtkIdType FindClosestPointInRegion (int regionId, double x, double y, double z, double &dist2)
 Find the Id of the point in the given leaf region which is closest to the given point. More...
 
- Public Member Functions inherited from vtkAbstractPointLocator
vtkIdType FindClosestPoint (double x, double y, double z)
 Given a position x, return the id of the point closest to it. More...
 
void FindClosestNPoints (int N, double x, double y, double z, vtkIdList *result)
 Find the closest N points to a position. More...
 
void FindPointsWithinRadius (double R, double x, double y, double z, vtkIdList *result)
 Find all points within a specified radius R of position x. More...
 
virtual vtkIdType GetNumberOfBuckets ()
 Return the total number of buckets in the locator. More...
 
vtkAbstractPointLocatorNewInstance () const
 Standard type and print methods. More...
 
- Public Member Functions inherited from vtkLocator
virtual void Update ()
 Cause the locator to rebuild itself if it or its input dataset has changed. More...
 
virtual void Initialize ()
 Initialize locator. More...
 
virtual void SetDataSet (vtkDataSet *)
 Build the locator from the points/cells defining this dataset. More...
 
virtual vtkDataSetGetDataSet ()
 Build the locator from the points/cells defining this dataset. More...
 
virtual void SetMaxLevel (int)
 Set the maximum allowable level for the tree. More...
 
virtual int GetMaxLevel ()
 Set the maximum allowable level for the tree. More...
 
virtual int GetLevel ()
 Get the level of the locator (determined automatically if Automatic is true). More...
 
virtual void SetAutomatic (int)
 Boolean controls whether locator depth/resolution of locator is computed automatically from average number of entities in bucket. More...
 
virtual int GetAutomatic ()
 Boolean controls whether locator depth/resolution of locator is computed automatically from average number of entities in bucket. More...
 
virtual void AutomaticOn ()
 Boolean controls whether locator depth/resolution of locator is computed automatically from average number of entities in bucket. More...
 
virtual void AutomaticOff ()
 Boolean controls whether locator depth/resolution of locator is computed automatically from average number of entities in bucket. More...
 
virtual void SetTolerance (double)
 Specify absolute tolerance (in world coordinates) for performing geometric operations. More...
 
virtual double GetTolerance ()
 Specify absolute tolerance (in world coordinates) for performing geometric operations. More...
 
virtual vtkMTimeType GetBuildTime ()
 Return the time of the last data structure build. More...
 
void Register (vtkObjectBase *o) override
 Handle the PointSet <-> Locator loop. More...
 
void UnRegister (vtkObjectBase *o) override
 Handle the PointSet <-> Locator loop. More...
 
vtkLocatorNewInstance () const
 Standard type and print methods. More...
 
- Public Member Functions inherited from vtkObject
 vtkBaseTypeMacro (vtkObject, vtkObjectBase)
 
virtual void DebugOn ()
 Turn debugging output on. More...
 
virtual void DebugOff ()
 Turn debugging output off. More...
 
bool GetDebug ()
 Get the value of the debug flag. More...
 
void SetDebug (bool debugFlag)
 Set the value of the debug flag. More...
 
virtual void Modified ()
 Update the modification time for this object. More...
 
virtual vtkMTimeType GetMTime ()
 Return this object's modified time. More...
 
void RemoveObserver (unsigned long tag)
 
void RemoveObservers (unsigned long event)
 
void RemoveObservers (const char *event)
 
void RemoveAllObservers ()
 
int HasObserver (unsigned long event)
 
int 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. More...
 
unsigned long AddObserver (const char *event, vtkCommand *, float priority=0.0f)
 Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
 
vtkCommandGetCommand (unsigned long tag)
 Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
 
void RemoveObserver (vtkCommand *)
 Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
 
void RemoveObservers (unsigned long event, vtkCommand *)
 Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
 
void RemoveObservers (const char *event, vtkCommand *)
 Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
 
int HasObserver (unsigned long event, vtkCommand *)
 Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
 
int HasObserver (const char *event, vtkCommand *)
 Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
 
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. More...
 
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. More...
 
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. More...
 
int InvokeEvent (unsigned long event, void *callData)
 This method invokes an event and return whether the event was aborted or not. More...
 
int InvokeEvent (const char *event, void *callData)
 This method invokes an event and return whether the event was aborted or not. More...
 
- Public Member Functions inherited from vtkObjectBase
const char * GetClassName () const
 Return the class name as a string. More...
 
virtual void Delete ()
 Delete a VTK object. More...
 
virtual void FastDelete ()
 Delete a reference to this object. More...
 
void InitializeObjectBase ()
 
void Print (ostream &os)
 Print an object to an ostream. More...
 
int GetReferenceCount ()
 Return the current reference count of this object. More...
 
void SetReferenceCount (int)
 Sets the reference count. More...
 
void PrintRevisions (ostream &)
 Legacy. More...
 
virtual void PrintHeader (ostream &os, vtkIndent indent)
 Methods invoked by print to print information about the object including superclasses. More...
 
virtual void PrintTrailer (ostream &os, vtkIndent indent)
 Methods invoked by print to print information about the object including superclasses. More...
 

Static Public Member Functions

static int IsTypeOf (const char *type)
 
static vtkOctreePointLocatorSafeDownCast (vtkObjectBase *o)
 
static vtkOctreePointLocatorNew ()
 
- Static Public Member Functions inherited from vtkAbstractPointLocator
static int IsTypeOf (const char *type)
 Standard type and print methods. More...
 
static vtkAbstractPointLocatorSafeDownCast (vtkObjectBase *o)
 Standard type and print methods. More...
 
- Static Public Member Functions inherited from vtkLocator
static int IsTypeOf (const char *type)
 Standard type and print methods. More...
 
static vtkLocatorSafeDownCast (vtkObjectBase *o)
 Standard type and print methods. More...
 
- Static Public Member Functions inherited from vtkObject
static vtkObjectNew ()
 Create an object with Debug turned off, modified time initialized to zero, and reference counting on. More...
 
static void BreakOnError ()
 This method is called when vtkErrorMacro executes. More...
 
static void SetGlobalWarningDisplay (int val)
 This is a global flag that controls whether any debug, warning or error messages are displayed. More...
 
static void GlobalWarningDisplayOn ()
 This is a global flag that controls whether any debug, warning or error messages are displayed. More...
 
static void GlobalWarningDisplayOff ()
 This is a global flag that controls whether any debug, warning or error messages are displayed. More...
 
static int GetGlobalWarningDisplay ()
 This is a global flag that controls whether any debug, warning or error messages are displayed. More...
 
- 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. More...
 
static vtkObjectBaseNew ()
 Create an object with Debug turned off, modified time initialized to zero, and reference counting on. More...
 

Protected Member Functions

virtual vtkObjectBaseNewInstanceInternal () const
 Standard type and print methods. More...
 
 vtkOctreePointLocator ()
 
 ~vtkOctreePointLocator () override
 
void BuildLeafNodeList (vtkOctreePointLocatorNode *node, int &index)
 
void FindPointsWithinRadius (vtkOctreePointLocatorNode *node, double radiusSquared, const double x[3], vtkIdList *ids)
 Recursive helper for public FindPointsWithinRadius. More...
 
void AddAllPointsInRegion (vtkOctreePointLocatorNode *node, vtkIdList *ids)
 
void FindPointsInArea (vtkOctreePointLocatorNode *node, double *area, vtkIdTypeArray *ids)
 
void AddAllPointsInRegion (vtkOctreePointLocatorNode *node, vtkIdTypeArray *ids)
 
void DivideRegion (vtkOctreePointLocatorNode *node, int *ordering, int level)
 
int DivideTest (int size, int level)
 
void AddPolys (vtkOctreePointLocatorNode *node, vtkPoints *pts, vtkCellArray *polys)
 
int _FindClosestPointInRegion (int leafNodeId, double x, double y, double z, double &dist2)
 Given a leaf node id and point, return the local id and the squared distance between the closest point and the given point. More...
 
int FindClosestPointInSphere (double x, double y, double z, double radius, int skipRegion, double &dist2)
 Given a location and a radiues, find the closest point within this radius. More...
 
 vtkOctreePointLocator (const vtkOctreePointLocator &) VTK_DELETE_FUNCTION
 
void operator= (const vtkOctreePointLocator &) VTK_DELETE_FUNCTION
 
int FindRegion (vtkOctreePointLocatorNode *node, float x, float y, float z)
 Given a point and a node return the leaf node id that contains the point. More...
 
int FindRegion (vtkOctreePointLocatorNode *node, double x, double y, double z)
 Given a point and a node return the leaf node id that contains the point. More...
 
- 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. More...
 
void InternalReleaseFocus ()
 These methods allow a command to exclusively grab all events. More...
 
- Protected Member Functions inherited from vtkObjectBase
 vtkObjectBase ()
 
virtual ~vtkObjectBase ()
 
virtual void CollectRevisions (ostream &)
 
 vtkObjectBase (const vtkObjectBase &)
 
void operator= (const vtkObjectBase &)
 

Static Protected Member Functions

static void SetDataBoundsToSpatialBounds (vtkOctreePointLocatorNode *node)
 
static void DeleteAllDescendants (vtkOctreePointLocatorNode *octant)
 

Protected Attributes

vtkOctreePointLocatorNodeTop
 
vtkOctreePointLocatorNode ** LeafNodeList
 
double FudgeFactor
 
int NumberOfLocatorPoints
 
floatLocatorPoints
 
intLocatorIds
 
float MaxWidth
 
int CreateCubicOctants
 If CreateCubicOctants is non-zero, the bounding box of the points will be expanded such that all octants that are created will be cube-shaped (e.g. More...
 
int MaximumPointsPerRegion
 The maximum number of points in a region/octant before it is subdivided. More...
 
int NumberOfLeafNodes
 The maximum number of points in a region/octant before it is subdivided. More...
 
- Protected Attributes inherited from vtkAbstractPointLocator
double Bounds [6]
 
vtkIdType NumberOfBuckets
 
- Protected Attributes inherited from vtkLocator
vtkDataSetDataSet
 
int 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
vtkAtomicInt32 ReferenceCount
 
vtkWeakPointerBase ** WeakPointers
 

Detailed Description

an octree spatial decomposition of a set of points

Given a vtkDataSet, create an octree that is locally refined such that all leaf octants contain less than a certain amount of points. Note that there is no size constraint that a leaf octant in relation to any of its neighbors.

This class can also generate a PolyData representation of the boundaries of the spatial regions in the decomposition.

See also
vtkLocator vtkPointLocator vtkOctreePointLocatorNode
Tests:
vtkOctreePointLocator (Tests)

Definition at line 52 of file vtkOctreePointLocator.h.

Member Typedef Documentation

Definition at line 55 of file vtkOctreePointLocator.h.

Constructor & Destructor Documentation

vtkOctreePointLocator::vtkOctreePointLocator ( )
protected
vtkOctreePointLocator::~vtkOctreePointLocator ( )
overrideprotected
vtkOctreePointLocator::vtkOctreePointLocator ( const vtkOctreePointLocator )
protected

Member Function Documentation

static int vtkOctreePointLocator::IsTypeOf ( const char *  type)
static
virtual int vtkOctreePointLocator::IsA ( const char *  type)
virtual

Standard type and print methods.

Reimplemented from vtkAbstractPointLocator.

static vtkOctreePointLocator* vtkOctreePointLocator::SafeDownCast ( vtkObjectBase o)
static
virtual vtkObjectBase* vtkOctreePointLocator::NewInstanceInternal ( ) const
protectedvirtual

Standard type and print methods.

Reimplemented from vtkAbstractPointLocator.

vtkOctreePointLocator* vtkOctreePointLocator::NewInstance ( ) const
void vtkOctreePointLocator::PrintSelf ( ostream &  os,
vtkIndent  indent 
)
overridevirtual

Standard type and print methods.

Reimplemented from vtkAbstractPointLocator.

static vtkOctreePointLocator* vtkOctreePointLocator::New ( )
static
virtual void vtkOctreePointLocator::SetMaximumPointsPerRegion ( int  )
virtual

Maximum number of points per spatial region.

Default is 100.

virtual int vtkOctreePointLocator::GetMaximumPointsPerRegion ( )
virtual

Maximum number of points per spatial region.

Default is 100.

virtual void vtkOctreePointLocator::SetCreateCubicOctants ( int  )
virtual

Get/Set macro for CreateCubicOctants.

virtual int vtkOctreePointLocator::GetCreateCubicOctants ( )
virtual

Get/Set macro for CreateCubicOctants.

virtual double vtkOctreePointLocator::GetFudgeFactor ( )
virtual

Some algorithms on octrees require a value that is a very small distance relative to the diameter of the entire space divided by the octree.

This factor is the maximum axis-aligned width of the space multiplied by 10e-6.

virtual void vtkOctreePointLocator::SetFudgeFactor ( double  )
virtual

Some algorithms on octrees require a value that is a very small distance relative to the diameter of the entire space divided by the octree.

This factor is the maximum axis-aligned width of the space multiplied by 10e-6.

double* vtkOctreePointLocator::GetBounds ( )
overridevirtual

Get the spatial bounds of the entire octree space.

Sets bounds array to xmin, xmax, ymin, ymax, zmin, zmax.

Reimplemented from vtkAbstractPointLocator.

void vtkOctreePointLocator::GetBounds ( double bounds)
overridevirtual

Get the spatial bounds of the entire octree space.

Sets bounds array to xmin, xmax, ymin, ymax, zmin, zmax.

Reimplemented from vtkAbstractPointLocator.

virtual int vtkOctreePointLocator::GetNumberOfLeafNodes ( )
virtual

The number of leaf nodes of the tree, the spatial regions.

void vtkOctreePointLocator::GetRegionBounds ( int  regionID,
double  bounds[6] 
)

Get the spatial bounds of octree region.

void vtkOctreePointLocator::GetRegionDataBounds ( int  leafNodeID,
double  bounds[6] 
)

Get the bounds of the data within the leaf node.

int vtkOctreePointLocator::GetRegionContainingPoint ( double  x,
double  y,
double  z 
)

Get the id of the leaf region containing the specified location.

void vtkOctreePointLocator::BuildLocator ( )
overridevirtual

Create the octree decomposition of the cells of the data set or data sets.

Cells are assigned to octree spatial regions based on the location of their centroids.

Implements vtkLocator.

vtkIdType vtkOctreePointLocator::FindClosestPoint ( const double  x[3])
overridevirtual

Return the Id of the point that is closest to the given point.

Set the square of the distance between the two points.

Implements vtkAbstractPointLocator.

vtkIdType vtkOctreePointLocator::FindClosestPoint ( double  x,
double  y,
double  z,
double dist2 
)

Return the Id of the point that is closest to the given point.

Set the square of the distance between the two points.

vtkIdType vtkOctreePointLocator::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.

dist2 returns the squared distance to the point.

Implements vtkAbstractPointLocator.

vtkIdType vtkOctreePointLocator::FindClosestPointInRegion ( int  regionId,
double x,
double dist2 
)

Find the Id of the point in the given leaf region which is closest to the given point.

Return the ID of the point, and set the square of the distance of between the points.

vtkIdType vtkOctreePointLocator::FindClosestPointInRegion ( int  regionId,
double  x,
double  y,
double  z,
double dist2 
)

Find the Id of the point in the given leaf region which is closest to the given point.

Return the ID of the point, and set the square of the distance of between the points.

void vtkOctreePointLocator::FindPointsWithinRadius ( double  radius,
const double  x[3],
vtkIdList result 
)
overridevirtual

Find all points within a specified radius of position x.

The result is not sorted in any specific manner.

Implements vtkAbstractPointLocator.

void vtkOctreePointLocator::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 not 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.

vtkIdTypeArray* vtkOctreePointLocator::GetPointsInRegion ( int  leafNodeId)

Get a list of the original IDs of all points in a leaf node.

void vtkOctreePointLocator::FreeSearchStructure ( )
overridevirtual

Delete the octree data structure.

Implements vtkLocator.

void vtkOctreePointLocator::GenerateRepresentation ( int  level,
vtkPolyData pd 
)
overridevirtual

Create a polydata representation of the boundaries of the octree regions.

Implements vtkLocator.

void vtkOctreePointLocator::FindPointsInArea ( double area,
vtkIdTypeArray ids,
bool  clearArray = true 
)

Fill ids with points found in area.

The area is a 6-tuple containing (xmin, xmax, ymin, ymax, zmin, zmax). This method will clear the array by default. To append ids to an array, set clearArray to false.

void vtkOctreePointLocator::BuildLeafNodeList ( vtkOctreePointLocatorNode node,
int index 
)
protected
int vtkOctreePointLocator::FindRegion ( vtkOctreePointLocatorNode node,
float  x,
float  y,
float  z 
)
protected

Given a point and a node return the leaf node id that contains the point.

The function returns -1 if no nodes contain the point.

int vtkOctreePointLocator::FindRegion ( vtkOctreePointLocatorNode node,
double  x,
double  y,
double  z 
)
protected

Given a point and a node return the leaf node id that contains the point.

The function returns -1 if no nodes contain the point.

static void vtkOctreePointLocator::SetDataBoundsToSpatialBounds ( vtkOctreePointLocatorNode node)
staticprotected
static void vtkOctreePointLocator::DeleteAllDescendants ( vtkOctreePointLocatorNode octant)
staticprotected
void vtkOctreePointLocator::FindPointsWithinRadius ( vtkOctreePointLocatorNode node,
double  radiusSquared,
const double  x[3],
vtkIdList ids 
)
protected

Recursive helper for public FindPointsWithinRadius.

radiusSquared is the square of the radius and is used in order to avoid the expensive square root calculation.

void vtkOctreePointLocator::AddAllPointsInRegion ( vtkOctreePointLocatorNode node,
vtkIdList ids 
)
protected
void vtkOctreePointLocator::FindPointsInArea ( vtkOctreePointLocatorNode node,
double area,
vtkIdTypeArray ids 
)
protected
void vtkOctreePointLocator::AddAllPointsInRegion ( vtkOctreePointLocatorNode node,
vtkIdTypeArray ids 
)
protected
void vtkOctreePointLocator::DivideRegion ( vtkOctreePointLocatorNode node,
int ordering,
int  level 
)
protected
int vtkOctreePointLocator::DivideTest ( int  size,
int  level 
)
protected
void vtkOctreePointLocator::AddPolys ( vtkOctreePointLocatorNode node,
vtkPoints pts,
vtkCellArray polys 
)
protected
int vtkOctreePointLocator::_FindClosestPointInRegion ( int  leafNodeId,
double  x,
double  y,
double  z,
double dist2 
)
protected

Given a leaf node id and point, return the local id and the squared distance between the closest point and the given point.

int vtkOctreePointLocator::FindClosestPointInSphere ( double  x,
double  y,
double  z,
double  radius,
int  skipRegion,
double dist2 
)
protected

Given a location and a radiues, find the closest point within this radius.

The function does not examine the region with Id equal to skipRegion (do not set skipRegion to -1 as all non-leaf octants have -1 as their Id). The Id is returned along with the distance squared for success and -1 is returned for failure.

void vtkOctreePointLocator::operator= ( const vtkOctreePointLocator )
protected

Member Data Documentation

vtkOctreePointLocatorNode* vtkOctreePointLocator::Top
protected

Definition at line 200 of file vtkOctreePointLocator.h.

vtkOctreePointLocatorNode** vtkOctreePointLocator::LeafNodeList
protected

Definition at line 201 of file vtkOctreePointLocator.h.

int vtkOctreePointLocator::MaximumPointsPerRegion
protected

The maximum number of points in a region/octant before it is subdivided.

Definition at line 262 of file vtkOctreePointLocator.h.

int vtkOctreePointLocator::NumberOfLeafNodes
protected

The maximum number of points in a region/octant before it is subdivided.

Definition at line 263 of file vtkOctreePointLocator.h.

double vtkOctreePointLocator::FudgeFactor
protected

Definition at line 266 of file vtkOctreePointLocator.h.

int vtkOctreePointLocator::NumberOfLocatorPoints
protected

Definition at line 267 of file vtkOctreePointLocator.h.

float* vtkOctreePointLocator::LocatorPoints
protected

Definition at line 268 of file vtkOctreePointLocator.h.

int* vtkOctreePointLocator::LocatorIds
protected

Definition at line 269 of file vtkOctreePointLocator.h.

float vtkOctreePointLocator::MaxWidth
protected

Definition at line 271 of file vtkOctreePointLocator.h.

int vtkOctreePointLocator::CreateCubicOctants
protected

If CreateCubicOctants is non-zero, the bounding box of the points will be expanded such that all octants that are created will be cube-shaped (e.g.

have equal lengths on each side). This may make the tree deeper but also results in better shaped octants for doing searches. The default is to have this set on.

Definition at line 280 of file vtkOctreePointLocator.h.


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