EBGeometry::BoxSDF< T > Class Template Reference

Signed distance field for an axis-aligned box (AABB). More...

#include <EBGeometry_AnalyticDistanceFunctions.hpp>

Inheritance diagram for EBGeometry::BoxSDF< T >:

Collaboration diagram for EBGeometry::BoxSDF< T >:

Public Member Functions
	BoxSDF ()=default
	Default constructor. Constructs a unit cube centered at the origin: [-0.5, 0.5]^3.
	BoxSDF (const Vec3T< T > &a_loCorner, const Vec3T< T > &a_hiCorner) noexcept
	Full constructor.
	BoxSDF (const BoxSDF &)=default
	Copy constructor.
	BoxSDF (BoxSDF &&)=default
	Move constructor.
BoxSDF &	operator= (const BoxSDF &)=default
	Copy assignment.
BoxSDF &	operator= (BoxSDF &&)=default
	Move assignment.
	~BoxSDF () override=default
	Destructor.
const Vec3T< T > &	getLowCorner () const noexcept
	Get lower-left corner.
Vec3T< T > &	getLowCorner () noexcept
	Get lower-left corner.
const Vec3T< T > &	getHighCorner () const noexcept
	Get upper-right corner.
Vec3T< T > &	getHighCorner () noexcept
	Get upper-right corner.
T	signedDistance (const Vec3T< T > &a_point) const noexcept override
	Signed distance function for the axis-aligned box.
Public Member Functions inherited from EBGeometry::SignedDistanceFunction< T >
	SignedDistanceFunction ()=default
	Default constructor.
	~SignedDistanceFunction () override=default
	Destructor.
T	value (const Vec3T< T > &a_point) const noexcept final
	Implementation of ImplicitFunction::value; delegates to signedDistance().
virtual Vec3T< T >	normal (const Vec3T< T > &a_point, const T &a_delta) const noexcept
	Compute the outward normal using central finite differences.
Public Member Functions inherited from EBGeometry::ImplicitFunction< T >
	ImplicitFunction ()=default
	Default constructor.
virtual	~ImplicitFunction ()=default
	Default destructor.
T	operator() (const Vec3T< T > &a_point) const noexcept
	Call operator — alternative signature for the value function.
template<class BV >
BV	approximateBoundingVolumeOctree (const Vec3T< T > &a_initialLowCorner, const Vec3T< T > &a_initialHighCorner, const unsigned int a_maxTreeDepth, const T &a_safety=0.0) const
	Compute an approximation to the bounding volume for the implicit surface using octree subdivision.

Protected Attributes
Vec3T< T >	m_loCorner = Vec3T<T>(T(-0.5), T(-0.5), T(-0.5))
	Low box corner.
Vec3T< T >	m_hiCorner = Vec3T<T>(T(0.5), T(0.5), T(0.5))
	High box corner.

Detailed Description

template<class T>
class EBGeometry::BoxSDF< T >

Signed distance field for an axis-aligned box (AABB).

The box is defined by its lower and upper corners m_loCorner and m_hiCorner. It is axis-aligned (faces are perpendicular to the coordinate axes). The SDF is negative inside and positive outside. Side lengths are m_hiCorner[i] - m_loCorner[i] per axis. By default the box is the unit cube [-0.5, 0.5]^3 centered at the origin.

Template Parameters

T	Floating-point precision.

Constructor & Destructor Documentation

BoxSDF()

template<class T >

EBGeometry::BoxSDF< T >::BoxSDF ( const Vec3T< T > &  a_loCorner, const Vec3T< T > &  a_hiCorner  )

inlinenoexcept

Full constructor.

Parameters

[in]	a_loCorner	Lower corner (minimum x, y, z).
[in]	a_hiCorner	Upper corner (maximum x, y, z). Each component must be strictly greater than the corresponding component of a_loCorner.

Member Function Documentation

getHighCorner() [1/2]

template<class T >

const Vec3T< T > & EBGeometry::BoxSDF< T >::getHighCorner ( ) const

inlinenoexcept

Get upper-right corner.

Returns

m_hiCorner

getHighCorner() [2/2]

template<class T >

Vec3T< T > & EBGeometry::BoxSDF< T >::getHighCorner ( )

inlinenoexcept

Get upper-right corner.

Returns

m_hiCorner

getLowCorner() [1/2]

template<class T >

const Vec3T< T > & EBGeometry::BoxSDF< T >::getLowCorner ( ) const

inlinenoexcept

Get lower-left corner.

Returns

m_loCorner

getLowCorner() [2/2]

template<class T >

Vec3T< T > & EBGeometry::BoxSDF< T >::getLowCorner ( )

inlinenoexcept

Get lower-left corner.

Returns

m_loCorner

operator=() [1/2]

template<class T >

BoxSDF & EBGeometry::BoxSDF< T >::operator= ( BoxSDF< T > &&  )

default

Move assignment.

Returns

Reference to (*this).

operator=() [2/2]

template<class T >

BoxSDF & EBGeometry::BoxSDF< T >::operator= ( const BoxSDF< T > &  )

default

Copy assignment.

Returns

Reference to (*this).

signedDistance()

template<class T >

T EBGeometry::BoxSDF< T >::signedDistance ( const Vec3T< T > &  a_point ) const

inlineoverridevirtualnoexcept

Signed distance function for the axis-aligned box.

Parameters

[in]

a_point

Position.

Returns

Signed distance from a_point to the box surface; negative inside the box.

Implements EBGeometry::SignedDistanceFunction< T >.

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

• Source/EBGeometry_AnalyticDistanceFunctions.hpp