EBGeometry::SphereAoSoA< T, W > Struct Template Reference

A group of up to W spheres carrying their cloud indices: a PointAoSoA<T, W> of the centers, and one more lane array of the radii. More...

#include <EBGeometry_SphereAoSoA.hpp>

Collaboration diagram for EBGeometry::SphereAoSoA< T, W >:

Public Member Functions
void	pack (const SphereCloud::Sphere< T > *a_spheres, const uint32_t *a_sphereIds, uint32_t a_count) noexcept
	Pack a_count (sphere, id) pairs into this group.
void	packUnchecked (const SphereCloud::Sphere< T > *a_spheres, const uint32_t *a_sphereIds, uint32_t a_count) noexcept
	pack() without its always-on checks, for a build that runs on a device.
Array< T, W >	getSignedDistances (const Vec3T< T > &a_point) const noexcept
	Signed distances from a_point to the surface of every one of the W lane spheres, |p - c| - r.
uint32_t	getSphereId (size_t a_lane) const noexcept
	Get the id of the sphere in one lane of this group.
uint32_t	numValid () const noexcept
	Number of real (non-padded) spheres in this group.
template<class BV >
BV	computeBoundingVolume () const noexcept
	Compute the bounding volume enclosing all valid spheres in this group, each grown by its radius.

Protected Attributes
PointAoSoA< T, W >	m_centers
	The centers and ids. It also holds the valid-sphere count.
Array< T, W >	m_radii
	Per-lane radii. m_radii[j] = radius of sphere j.

Detailed Description

template<class T, size_t W = PointSoA::DefaultWidth<T>()>
struct EBGeometry::SphereAoSoA< T, W >

A group of up to W spheres carrying their cloud indices: a PointAoSoA<T, W> of the centers, and one more lane array of the radii.

The leaf primitive of SphereCloudBVH. The centers and ids are a PointAoSoA, so the distance to every center is PointSoAT's SIMD-wide computation, and the radii sit in their own array beside it.

Template Parameters

T	Floating-point precision.
W	SIMD width; see PointSoAT. Defaults to PointSoA::DefaultWidth<T>().

Member Function Documentation

computeBoundingVolume()

template<class T , size_t W = PointSoA::DefaultWidth<T>()>

template<class BV >

BV EBGeometry::SphereAoSoA< T, W >::computeBoundingVolume ( ) const

noexcept

Compute the bounding volume enclosing all valid spheres in this group, each grown by its radius.

Template Parameters

BV	Bounding volume type; must be constructible from a low and a high corner (AABBT<T>, say).

Returns

Bounding volume enclosing every valid sphere.

getSignedDistances()

template<class T , size_t W = PointSoA::DefaultWidth<T>()>

Array< T, W > EBGeometry::SphereAoSoA< T, W >::getSignedDistances ( const Vec3T< T > &  a_point ) const

noexcept

Signed distances from a_point to the surface of every one of the W lane spheres, |p - c| - r.

Negative inside a sphere. Padded lanes repeat the last real sphere's value.

Parameters

[in]

a_point

Query point. Must be finite.

Returns

Per-lane signed distances, one per W lanes.

getSphereId()

template<class T , size_t W = PointSoA::DefaultWidth<T>()>

uint32_t EBGeometry::SphereAoSoA< T, W >::getSphereId ( size_t  a_lane ) const

noexcept

Get the id of the sphere in one lane of this group.

Parameters

[in]

a_lane

Lane index. Must satisfy 0 <= a_lane < W (padded lanes return the last real sphere's id; see pack()).

Returns

The id of the sphere at a_lane.

numValid()

template<class T , size_t W = PointSoA::DefaultWidth<T>()>

uint32_t EBGeometry::SphereAoSoA< T, W >::numValid ( ) const

inlinenoexcept

Number of real (non-padded) spheres in this group.

Returns

The count passed to pack(), 1..W (0 before pack()).

pack()

template<class T , size_t W = PointSoA::DefaultWidth<T>()>

void EBGeometry::SphereAoSoA< T, W >::pack ( const SphereCloud::Sphere< T > *  a_spheres, const uint32_t *  a_sphereIds, uint32_t  a_count  )

noexcept

Pack a_count (sphere, id) pairs into this group.

Pads lanes a_count..W-1 by repeating the last real sphere and id, as PointAoSoA::pack() does, so all W lanes hold valid data.

Parameters

[in]	a_spheres	Source sphere array with at least a_count elements. Must not be null; every center and radius finite, every radius at least 0.
[in]	a_sphereIds	Source id array (typically cloud indices), same order and length as a_spheres. Must not be null.
[in]	a_count	Number of valid (sphere, id) pairs to pack. Must satisfy 1 <= a_count <= W.

packUnchecked()

template<class T , size_t W = PointSoA::DefaultWidth<T>()>

void EBGeometry::SphereAoSoA< T, W >::packUnchecked ( const SphereCloud::Sphere< T > *  a_spheres, const uint32_t *  a_sphereIds, uint32_t  a_count  )

noexcept

pack() without its always-on checks, for a build that runs on a device.

The caller guarantees what pack() checks (checked here only with assertions on).

Parameters

[in]	a_spheres	Source sphere array with at least a_count elements.
[in]	a_sphereIds	Source id array, same order and length as a_spheres.
[in]	a_count	Number of valid (sphere, id) pairs to pack.

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

• Source/EBGeometry_SphereAoSoA.hpp