EBGeometry::RoundedBoxSDF< T > Class Template Reference

Signed distance field for an axis-aligned box with rounded edges and corners. More...

#include <EBGeometry_AnalyticDistanceFunctions.hpp>

Public Member Functions
	RoundedBoxSDF ()=default
	Default constructor. Constructs a rounded unit cube, [-0.5, 0.5]^3, centered at the origin, with rounding radius 0.1.
	RoundedBoxSDF (const Vec3T< T > &a_center, const Vec3T< T > &a_size, const T a_curvature) noexcept
	Full constructor.
	RoundedBoxSDF (const RoundedBoxSDF &)=default
	Copy constructor.
	RoundedBoxSDF (RoundedBoxSDF &&)=default
	Move constructor.
RoundedBoxSDF &	operator= (const RoundedBoxSDF &)=default
	Copy assignment.
RoundedBoxSDF &	operator= (RoundedBoxSDF &&)=default
	Move assignment.
T	signedDistance (const Vec3T< T > &a_point) const noexcept
	Signed distance function for the rounded box.
BoundingVolumes::AABBT< T >	computeBoundingVolume () const noexcept
	The shape's axis-aligned bounding box.

Static Public Attributes
static constexpr DistanceQuality	distanceQuality = DistanceQuality::Exact
	How far signedDistance() can be trusted as a distance: the Euclidean distance to the surface.

Protected Attributes
T	m_curvature = T(0.1)
	Corner rounding radius.
Vec3T< T >	m_center = Vec3T<T>::zeros()
	Box center.
Vec3T< T >	m_dimensions = Vec3T<T>(T(0.4), T(0.4), T(0.4))
	Half-extents of the inner box (= 0.5 * outer size - curvature).

Detailed Description

template<class T>
class EBGeometry::RoundedBoxSDF< T >

Signed distance field for an axis-aligned box with rounded edges and corners.

The constructor takes the box's center, its outer size (the full side lengths of the finished, rounded box, which is also its bounding box) and the rounding radius. The rounding is a sphere of that radius swept over an inner box whose half-extents, m_dimensions = 0.5 * size - curvature, are stored. The SDF is negative inside and positive outside.

Template Parameters

T	Floating-point precision.

Constructor & Destructor Documentation

RoundedBoxSDF()

template<class T >

EBGeometry::RoundedBoxSDF< T >::RoundedBoxSDF ( const Vec3T< T > &  a_center, const Vec3T< T > &  a_size, const T  a_curvature  )

inlinenoexcept

Full constructor.

Parameters

[in]	a_center	Box center.
[in]	a_size	Outer size: the full side lengths of the rounded box. Each must exceed twice the rounding radius.
[in]	a_curvature	Rounding radius of the edges and corners. Must be > 0.

Member Function Documentation

computeBoundingVolume()

template<class T >

BoundingVolumes::AABBT< T > EBGeometry::RoundedBoxSDF< T >::computeBoundingVolume ( ) const

inlinenoexcept

The shape's axis-aligned bounding box.

The center plus and minus half the outer size.

Returns

The bounding box.

operator=() [1/2]

template<class T >

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

default

Copy assignment.

Returns

Reference to (*this).

operator=() [2/2]

template<class T >

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

default

Move assignment.

Returns

Reference to (*this).

signedDistance()

template<class T >

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

inlinenoexcept

Signed distance function for the rounded box.

Parameters

[in]

a_point

Position.

Returns

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

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

• Source/EBGeometry_AnalyticDistanceFunctions.hpp