A simple bounding volume hierarchy based on AlignedBox. More...

#include <KdBVH.h>

Classes
struct	VectorComparator

Public Types
enum	{ Dim = _Dim }

typedef int	Index

typedef _Object	Object

typedef std::vector< Object, aligned_allocator< Object > >	ObjectList

typedef _Scalar	Scalar

typedef AlignedBox< Scalar, Dim >	Volume

typedef std::vector< Volume, aligned_allocator< Volume > >	VolumeList

Public Member Functions
EIGEN_STRONG_INLINE void	getChildren (Index index, VolumeIterator &outVBegin, VolumeIterator &outVEnd, ObjectIterator &outOBegin, ObjectIterator &outOEnd) const

Index	getRootIndex () const

const Volume &	getVolume (Index index) const

template<typename Iter >
void	init (Iter begin, Iter end)

template<typename OIter , typename BIter >
void	init (OIter begin, OIter end, BIter boxBegin, BIter boxEnd)

	KdBVH ()

template<typename Iter >
	KdBVH (Iter begin, Iter end)

template<typename OIter , typename BIter >
	KdBVH (OIter begin, OIter end, BIter boxBegin, BIter boxEnd)

Public Attributes
const typedef Object *	ObjectIterator

const typedef int *	VolumeIterator

Private Types
typedef Matrix< Scalar, Dim, 1 >	VectorType

typedef internal::vector_int_pair< Scalar, Dim >	VIPair

typedef std::vector< VIPair, aligned_allocator< VIPair > >	VIPairList

Private Member Functions
void	build (VIPairList &objCenters, int from, int to, const VolumeList &objBoxes, int dim)

Private Attributes
VolumeList	boxes

std::vector< int >	children

ObjectList	objects

Detailed Description

template<typename _Scalar, int _Dim, typename _Object>
class Eigen::KdBVH< _Scalar, _Dim, _Object >

A simple bounding volume hierarchy based on AlignedBox.

Parameters

_Scalar	The underlying scalar type of the bounding boxes
_Dim	The dimension of the space in which the hierarchy lives
_Object	The object type that lives in the hierarchy. It must have value semantics. Either bounding_box(_Object) must be defined and return an AlignedBox<_Scalar, _Dim> or bounding boxes must be provided to the tree initializer.

This class provides a simple (as opposed to optimized) implementation of a bounding volume hierarchy analogous to a Kd-tree. Given a sequence of objects, it computes their bounding boxes, constructs a Kd-tree of their centers and builds a BVH with the structure of that Kd-tree. When the elements of the tree are too expensive to be copied around, it is useful for _Object to be a pointer.

Definition at line 68 of file KdBVH.h.

Member Typedef Documentation

◆ Index

template<typename _Scalar , int _Dim, typename _Object >

typedef int Eigen::KdBVH< _Scalar, _Dim, _Object >::Index

Definition at line 77 of file KdBVH.h.

◆ Object

template<typename _Scalar , int _Dim, typename _Object >

typedef _Object Eigen::KdBVH< _Scalar, _Dim, _Object >::Object

Definition at line 72 of file KdBVH.h.

◆ ObjectList

template<typename _Scalar , int _Dim, typename _Object >

typedef std::vector<Object, aligned_allocator<Object> > Eigen::KdBVH< _Scalar, _Dim, _Object >::ObjectList

Definition at line 73 of file KdBVH.h.

◆ Scalar

template<typename _Scalar , int _Dim, typename _Object >

typedef _Scalar Eigen::KdBVH< _Scalar, _Dim, _Object >::Scalar

Definition at line 74 of file KdBVH.h.

◆ VectorType

template<typename _Scalar , int _Dim, typename _Object >

typedef Matrix<Scalar, Dim, 1> Eigen::KdBVH< _Scalar, _Dim, _Object >::VectorType

private

Definition at line 173 of file KdBVH.h.

◆ VIPair

template<typename _Scalar , int _Dim, typename _Object >

typedef internal::vector_int_pair<Scalar, Dim> Eigen::KdBVH< _Scalar, _Dim, _Object >::VIPair

private

Definition at line 171 of file KdBVH.h.

◆ VIPairList

template<typename _Scalar , int _Dim, typename _Object >

typedef std::vector<VIPair, aligned_allocator<VIPair> > Eigen::KdBVH< _Scalar, _Dim, _Object >::VIPairList

private

Definition at line 172 of file KdBVH.h.

◆ Volume

template<typename _Scalar , int _Dim, typename _Object >

typedef AlignedBox<Scalar, Dim> Eigen::KdBVH< _Scalar, _Dim, _Object >::Volume

Definition at line 75 of file KdBVH.h.

◆ VolumeList

template<typename _Scalar , int _Dim, typename _Object >

typedef std::vector<Volume, aligned_allocator<Volume> > Eigen::KdBVH< _Scalar, _Dim, _Object >::VolumeList

Definition at line 76 of file KdBVH.h.

Member Enumeration Documentation

◆ anonymous enum

template<typename _Scalar , int _Dim, typename _Object >

anonymous enum

Enumerator
Dim

Definition at line 71 of file KdBVH.h.

Constructor & Destructor Documentation

◆ KdBVH() [1/3]

template<typename _Scalar , int _Dim, typename _Object >

Eigen::KdBVH< _Scalar, _Dim, _Object >::KdBVH ( )

inline

Definition at line 81 of file KdBVH.h.

◆ KdBVH() [2/3]

template<typename _Scalar , int _Dim, typename _Object >

template<typename Iter >

Eigen::KdBVH< _Scalar, _Dim, _Object >::KdBVH	(	Iter	begin,
		Iter	end
	)

inline

Given an iterator range over Object references, constructs the BVH. Requires that bounding_box(Object) return a Volume.

Definition at line 84 of file KdBVH.h.

◆ KdBVH() [3/3]

template<typename _Scalar , int _Dim, typename _Object >

template<typename OIter , typename BIter >

Eigen::KdBVH< _Scalar, _Dim, _Object >::KdBVH	(	OIter	begin,
		OIter	end,
		BIter	boxBegin,
		BIter	boxEnd
	)

inline

Given an iterator range over Object references and an iterator range over their bounding boxes, constructs the BVH

Definition at line 87 of file KdBVH.h.

Member Function Documentation

◆ build()

template<typename _Scalar , int _Dim, typename _Object >

void Eigen::KdBVH< _Scalar, _Dim, _Object >::build	(	VIPairList &	objCenters,
		int	from,
		int	to,
		const VolumeList &	objBoxes,
		int	dim
	)

inlineprivate

Definition at line 184 of file KdBVH.h.

◆ getChildren()

template<typename _Scalar , int _Dim, typename _Object >

EIGEN_STRONG_INLINE void Eigen::KdBVH< _Scalar, _Dim, _Object >::getChildren	(	Index	index,
		VolumeIterator &	outVBegin,
		VolumeIterator &	outVEnd,
		ObjectIterator &	outOBegin,
		ObjectIterator &	outOEnd
	)		const

inline

Given an index of a node, on exit, outVBegin and outVEnd range over the indices of the volume children of the node and outOBegin and outOEnd range over the object children of the node

Definition at line 133 of file KdBVH.h.

◆ getRootIndex()

template<typename _Scalar , int _Dim, typename _Object >

Index Eigen::KdBVH< _Scalar, _Dim, _Object >::getRootIndex ( ) const

inline

Returns: the index of the root of the hierarchy

Definition at line 129 of file KdBVH.h.

◆ getVolume()

template<typename _Scalar , int _Dim, typename _Object >

const Volume& Eigen::KdBVH< _Scalar, _Dim, _Object >::getVolume ( Index index ) const

inline

Returns: the bounding box of the node at index

Definition at line 165 of file KdBVH.h.

◆ init() [1/2]

template<typename _Scalar , int _Dim, typename _Object >

template<typename Iter >

void Eigen::KdBVH< _Scalar, _Dim, _Object >::init	(	Iter	begin,
		Iter	end
	)

inline

Given an iterator range over Object references, constructs the BVH, overwriting whatever is in there currently. Requires that bounding_box(Object) return a Volume.

Definition at line 91 of file KdBVH.h.

◆ init() [2/2]

template<typename _Scalar , int _Dim, typename _Object >

template<typename OIter , typename BIter >

void Eigen::KdBVH< _Scalar, _Dim, _Object >::init	(	OIter	begin,
		OIter	end,
		BIter	boxBegin,
		BIter	boxEnd
	)

inline

Given an iterator range over Object references and an iterator range over their bounding boxes, constructs the BVH, overwriting whatever is in there currently.

Definition at line 95 of file KdBVH.h.

Member Data Documentation

◆ boxes

template<typename _Scalar , int _Dim, typename _Object >

VolumeList Eigen::KdBVH< _Scalar, _Dim, _Object >::boxes

private

Definition at line 217 of file KdBVH.h.

◆ children

template<typename _Scalar , int _Dim, typename _Object >

std::vector<int> Eigen::KdBVH< _Scalar, _Dim, _Object >::children

private

Definition at line 216 of file KdBVH.h.

◆ ObjectIterator

template<typename _Scalar , int _Dim, typename _Object >

const typedef Object* Eigen::KdBVH< _Scalar, _Dim, _Object >::ObjectIterator

Definition at line 79 of file KdBVH.h.

◆ objects

template<typename _Scalar , int _Dim, typename _Object >

ObjectList Eigen::KdBVH< _Scalar, _Dim, _Object >::objects

private

Definition at line 218 of file KdBVH.h.

◆ VolumeIterator

template<typename _Scalar , int _Dim, typename _Object >

const typedef int* Eigen::KdBVH< _Scalar, _Dim, _Object >::VolumeIterator

Definition at line 78 of file KdBVH.h.

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

KdBVH.h

Classes

Public Types

Public Member Functions

Public Attributes

Private Types

Private Member Functions

Private Attributes

Detailed Description

template<typename _Scalar, int _Dim, typename _Object> class Eigen::KdBVH< _Scalar, _Dim, _Object >

Member Typedef Documentation

◆ Index

◆ Object

◆ ObjectList

◆ Scalar

◆ VectorType

◆ VIPair

◆ VIPairList

◆ Volume

◆ VolumeList

Member Enumeration Documentation

◆ anonymous enum

Constructor & Destructor Documentation

◆ KdBVH() [1/3]

◆ KdBVH() [2/3]

◆ KdBVH() [3/3]

Member Function Documentation

◆ build()

◆ getChildren()

◆ getRootIndex()

◆ getVolume()

◆ init() [1/2]

◆ init() [2/2]

Member Data Documentation

◆ boxes

◆ children

◆ ObjectIterator

◆ objects

◆ VolumeIterator

template<typename _Scalar, int _Dim, typename _Object>
class Eigen::KdBVH< _Scalar, _Dim, _Object >