CubbyFlow::BVH< T, N > Class Template Reference

Bounding Volume Hierarchy (BVH) in N-D. More...

#include <Core/Geometry/BVH.hpp>

Inheritance diagram for CubbyFlow::BVH< T, N >:

Public Types
using	ContainerType = Array1< T >
using	Iterator = typename ContainerType::Iterator
using	ConstIterator = typename ContainerType::ConstIterator

Public Member Functions
void	Build (const ConstArrayView1< T > &items, const ConstArrayView1< BoundingBox< double, N > > &itemsBounds)
	Builds bounding volume hierarchy.
void	Clear ()
	Clears all the contents of this instance.
NearestNeighborQueryResult< T, N >	Nearest (const Vector< double, N > &pt, const NearestNeighborDistanceFunc< T, N > &distanceFunc) const override
bool	Intersects (const BoundingBox< double, N > &box, const BoxIntersectionTestFunc< T, N > &testFunc) const override
	Returns true if given box intersects with any of the stored items.
bool	Intersects (const Ray< double, N > &ray, const RayIntersectionTestFunc< T, N > &testFunc) const override
	Returns true if given ray intersects with any of the stored items.
void	ForEachIntersectingItem (const BoundingBox< double, N > &box, const BoxIntersectionTestFunc< T, N > &testFunc, const IntersectionVisitorFunc< T > &visitorFunc) const override
	Invokes visitorFunc for every intersecting items.
void	ForEachIntersectingItem (const Ray< double, N > &ray, const RayIntersectionTestFunc< T, N > &testFunc, const IntersectionVisitorFunc< T > &visitorFunc) const override
	Invokes visitorFunc for every intersecting items.
ClosestIntersectionQueryResult< T, N >	ClosestIntersection (const Ray< double, N > &ray, const GetRayIntersectionFunc< T, N > &testFunc) const override
	Returns the closest intersection for given ray.
const BoundingBox< double, N > &	GetBoundingBox () const
	Returns bounding box of every items.
Iterator	begin ()
	Returns the begin Iterator of the item.
Iterator	end ()
	Returns the end Iterator of the item.
ConstIterator	begin () const
	Returns the immutable begin Iterator of the item.
ConstIterator	end () const
	Returns the immutable end Iterator of the item.
size_t	NumberOfItems () const
	Returns the number of items.
const T &	Item (size_t i) const
	Returns the item at i.
size_t	NumberOfNodes () const
	Returns the number of nodes.
std::pair< size_t, size_t >	Children (size_t i) const
	Returns the children indices of i-th node.
bool	IsLeaf (size_t i) const
	Returns true if i-th node is a leaf node.
const BoundingBox< double, N > &	NodeBound (size_t i) const
	Returns bounding box of i-th node.
Iterator	ItemOfNode (size_t i)
	Returns item of i-th node.
ConstIterator	ItemOfNode (size_t i) const
	Returns item of i-th node.
Public Member Functions inherited from CubbyFlow::IntersectionQueryEngine< T, N >
	IntersectionQueryEngine ()=default
	Default constructor.
virtual	~IntersectionQueryEngine ()=default
	Default virtual destructor.
	IntersectionQueryEngine (const IntersectionQueryEngine &other)=default
	Default copy constructor.
	IntersectionQueryEngine (IntersectionQueryEngine &&other) noexcept=default
	Default move constructor.
IntersectionQueryEngine &	operator= (const IntersectionQueryEngine &other)=default
	Default copy assignment operator.
IntersectionQueryEngine &	operator= (IntersectionQueryEngine &&other) noexcept=default
	Default move assignment operator.
Public Member Functions inherited from CubbyFlow::NearestNeighborQueryEngine< T, N >
	NearestNeighborQueryEngine ()=default
	Default constructor.
virtual	~NearestNeighborQueryEngine ()=default
	Default virtual destructor.
	NearestNeighborQueryEngine (const NearestNeighborQueryEngine &other)=default
	Default copy constructor.
	NearestNeighborQueryEngine (NearestNeighborQueryEngine &&other) noexcept=default
	Default move constructor.
NearestNeighborQueryEngine &	operator= (const NearestNeighborQueryEngine &other)=default
	Default copy assignment operator.
NearestNeighborQueryEngine &	operator= (NearestNeighborQueryEngine &&other) noexcept=default
	Default move assignment operator.

Detailed Description

template<typename T, size_t N>
class CubbyFlow::BVH< T, N >

Bounding Volume Hierarchy (BVH) in N-D.

This class implements the classic bounding volume hierarchy structure in N-D. It implements IntersectionQueryEngine in order to support box/ray intersection tests. Also, NearestNeighborQueryEngine is implemented to provide nearest neighbor query.

Member Typedef Documentation

ConstIterator

template<typename T , size_t N>

using CubbyFlow::BVH< T, N >::ConstIterator = typename ContainerType::ConstIterator

ContainerType

template<typename T , size_t N>

using CubbyFlow::BVH< T, N >::ContainerType = Array1<T>

Iterator

template<typename T , size_t N>

using CubbyFlow::BVH< T, N >::Iterator = typename ContainerType::Iterator

Member Function Documentation

begin() [1/2]

template<typename T , size_t N>

BVH< T, N >::Iterator CubbyFlow::BVH< T, N >::begin

(

)

Returns the begin Iterator of the item.

begin() [2/2]

template<typename T , size_t N>

BVH< T, N >::ConstIterator CubbyFlow::BVH< T, N >::begin

(

)

const

Returns the immutable begin Iterator of the item.

Build()

template<typename T , size_t N>

void CubbyFlow::BVH< T, N >::Build	(	const ConstArrayView1< T > &	items,
		const ConstArrayView1< BoundingBox< double, N > > &	itemsBounds
	)

Builds bounding volume hierarchy.

Children()

template<typename T , size_t N>

std::pair< size_t, size_t > CubbyFlow::BVH< T, N >::Children

(

size_t

i

)

const

Returns the children indices of i-th node.

Clear()

template<typename T , size_t N>

void CubbyFlow::BVH< T, N >::Clear

(

)

Clears all the contents of this instance.

ClosestIntersection()

template<typename T , size_t N>

ClosestIntersectionQueryResult< T, N > CubbyFlow::BVH< T, N >::ClosestIntersection ( const Ray< double, N > &  ray, const GetRayIntersectionFunc< T, N > &  testFunc  ) const

overridevirtual

Returns the closest intersection for given ray.

Implements CubbyFlow::IntersectionQueryEngine< T, N >.

end() [1/2]

template<typename T , size_t N>

BVH< T, N >::Iterator CubbyFlow::BVH< T, N >::end

(

)

Returns the end Iterator of the item.

end() [2/2]

template<typename T , size_t N>

BVH< T, N >::ConstIterator CubbyFlow::BVH< T, N >::end

(

)

const

Returns the immutable end Iterator of the item.

ForEachIntersectingItem() [1/2]

template<typename T , size_t N>

void CubbyFlow::BVH< T, N >::ForEachIntersectingItem ( const BoundingBox< double, N > &  box, const BoxIntersectionTestFunc< T, N > &  testFunc, const IntersectionVisitorFunc< T > &  visitorFunc  ) const

overridevirtual

Invokes visitorFunc for every intersecting items.

Implements CubbyFlow::IntersectionQueryEngine< T, N >.

ForEachIntersectingItem() [2/2]

template<typename T , size_t N>

void CubbyFlow::BVH< T, N >::ForEachIntersectingItem ( const Ray< double, N > &  ray, const RayIntersectionTestFunc< T, N > &  testFunc, const IntersectionVisitorFunc< T > &  visitorFunc  ) const

overridevirtual

Invokes visitorFunc for every intersecting items.

Implements CubbyFlow::IntersectionQueryEngine< T, N >.

GetBoundingBox()

template<typename T , size_t N>

const BoundingBox< double, N > & CubbyFlow::BVH< T, N >::GetBoundingBox

(

)

const

Returns bounding box of every items.

Intersects() [1/2]

template<typename T , size_t N>

bool CubbyFlow::BVH< T, N >::Intersects ( const BoundingBox< double, N > &  box, const BoxIntersectionTestFunc< T, N > &  testFunc  ) const

overridevirtual

Returns true if given box intersects with any of the stored items.

Implements CubbyFlow::IntersectionQueryEngine< T, N >.

Intersects() [2/2]

template<typename T , size_t N>

bool CubbyFlow::BVH< T, N >::Intersects ( const Ray< double, N > &  ray, const RayIntersectionTestFunc< T, N > &  testFunc  ) const

overridevirtual

Returns true if given ray intersects with any of the stored items.

Implements CubbyFlow::IntersectionQueryEngine< T, N >.

IsLeaf()

template<typename T , size_t N>

bool CubbyFlow::BVH< T, N >::IsLeaf

(

size_t

i

)

const

Returns true if i-th node is a leaf node.

Item()

template<typename T , size_t N>

const T & CubbyFlow::BVH< T, N >::Item

(

size_t

i

)

const

Returns the item at i.

ItemOfNode() [1/2]

template<typename T , size_t N>

BVH< T, N >::Iterator CubbyFlow::BVH< T, N >::ItemOfNode

(

size_t

i

)

Returns item of i-th node.

ItemOfNode() [2/2]

template<typename T , size_t N>

BVH< T, N >::ConstIterator CubbyFlow::BVH< T, N >::ItemOfNode

(

size_t

i

)

const

Returns item of i-th node.

Nearest()

template<typename T , size_t N>

NearestNeighborQueryResult< T, N > CubbyFlow::BVH< T, N >::Nearest ( const Vector< double, N > &  pt, const NearestNeighborDistanceFunc< T, N > &  distanceFunc  ) const

inlineoverridevirtual

Returns the nearest neighbor for given point and distance measure function.

Implements CubbyFlow::NearestNeighborQueryEngine< T, N >.

NodeBound()

template<typename T , size_t N>

const BoundingBox< double, N > & CubbyFlow::BVH< T, N >::NodeBound

(

size_t

i

)

const

Returns bounding box of i-th node.

NumberOfItems()

template<typename T , size_t N>

size_t CubbyFlow::BVH< T, N >::NumberOfItems

(

)

const

Returns the number of items.

NumberOfNodes()

template<typename T , size_t N>

size_t CubbyFlow::BVH< T, N >::NumberOfNodes

(

)

const

Returns the number of nodes.

---

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

• Core/Geometry/BVH.hpp
• Core/Geometry/BVH-Impl.hpp