amrex::STLtools Class Reference

Utility class that loads STL meshes and samples them onto AMReX grids. More...

#include <AMReX_EB_STL_utils.H>

Public Types
using	Node = BVHNodeT< m_bvh_max_size, m_bvh_max_splits >

Public Member Functions
void	setBVHOptimization (bool flag)
	Enable/disable BVH acceleration when sampling.
void	read_stl_file (std::string const &fname, Real scale, Array< Real, 3 > const &center, int reverse_normal)
	Read an STL file, apply scaling/translation, and store triangles.
void	fill (MultiFab &mf, IntVect const &nghost, Geometry const &geom, Real outside_value=-1._rt, Real inside_value=1._rt) const
	Fill a level-set MultiFab sampled from the STL mesh.
int	getBoxType (Box const &box, Geometry const &geom, RunOn) const
	Return whether the EB is regular/covered/mixed inside box.
void	fillFab (BaseFab< Real > &levelset, const Geometry &geom, RunOn, Box const &bounding_box) const
	Fill a BaseFab with level-set data (host/device aware).
void	getIntercept (Array< Array4< Real >, 3 > const &inter_arr, Array< Array4< EB2::Type_t const >, 3 > const &type_arr, Array4< Real const > const &lst, Geometry const &geom, RunOn, Box const &bounding_box) const
	Compute intercepts and face types for EB geometry based on the STL mesh.
void	fillSignedDistance (MultiFab &mf, IntVect const &nghost, Geometry const &geom) const
	Fill mf with signed-distance values sampled from the STL mesh.
void	prepare (Gpu::PinnedVector< Triangle > a_tri_pts)
	Upload triangle data to device memory (exposed for CUDA workflows).

Static Public Member Functions
static constexpr bool	isGPUable () noexcept
static void	updateIntercept (Array< Array4< Real >, 3 > const &inter_arr, Array< Array4< EB2::Type_t const >, 3 > const &type_arr, Array4< Real const > const &lst, Geometry const &geom)
	Update intercepts.

Static Public Attributes
static constexpr int	m_bvh_max_size = 4
static constexpr int	m_bvh_max_splits = 4
static constexpr int	m_bvh_max_stack_size = 12
static constexpr int	allregular = -1
static constexpr int	mixedcells = 0
static constexpr int	allcovered = 1

Detailed Description

Utility class that loads STL meshes and samples them onto AMReX grids.

Member Typedef Documentation

Node

using amrex::STLtools::Node = BVHNodeT<m_bvh_max_size,m_bvh_max_splits>

Member Function Documentation

fill()

void amrex::STLtools::fill	(	MultiFab &	mf,
		IntVect const &	nghost,
		Geometry const &	geom,
		Real	outside_value = -1._rt,
		Real	inside_value = 1._rt
	)		const

Fill a level-set MultiFab sampled from the STL mesh.

fillFab()

void amrex::STLtools::fillFab	(	BaseFab< Real > &	levelset,
		const Geometry &	geom,
		RunOn	,
		Box const &	bounding_box
	)		const

Fill a BaseFab with level-set data (host/device aware).

fillSignedDistance()

void amrex::STLtools::fillSignedDistance	(	MultiFab &	mf,
		IntVect const &	nghost,
		Geometry const &	geom
	)		const

Fill mf with signed-distance values sampled from the STL mesh.

getBoxType()

int amrex::STLtools::getBoxType	(	Box const &	box,
		Geometry const &	geom,
		RunOn
	)		const

Return whether the EB is regular/covered/mixed inside box.

getIntercept()

void amrex::STLtools::getIntercept	(	Array< Array4< Real >, 3 > const &	inter_arr,
		Array< Array4< EB2::Type_t const >, 3 > const &	type_arr,
		Array4< Real const > const &	lst,
		Geometry const &	geom,
		RunOn	,
		Box const &	bounding_box
	)		const

Compute intercepts and face types for EB geometry based on the STL mesh.

isGPUable()

static constexpr bool amrex::STLtools::isGPUable ( )

inlinestaticconstexprnoexcept

prepare()

void amrex::STLtools::prepare

(

Gpu::PinnedVector< Triangle >

a_tri_pts

)

Upload triangle data to device memory (exposed for CUDA workflows).

read_stl_file()

void amrex::STLtools::read_stl_file	(	std::string const &	fname,
		Real	scale,
		Array< Real, 3 > const &	center,
		int	reverse_normal
	)

Read an STL file, apply scaling/translation, and store triangles.

Parameters

fname	Path to the STL mesh.
scale	Uniform scaling factor applied to vertices.
center	Translation applied to recenter the mesh.
reverse_normal	Non-zero to flip normals.

setBVHOptimization()

void amrex::STLtools::setBVHOptimization ( bool  flag )

inline

Enable/disable BVH acceleration when sampling.

updateIntercept()

void amrex::STLtools::updateIntercept ( Array< Array4< Real >, 3 > const &  inter_arr, Array< Array4< EB2::Type_t const >, 3 > const &  type_arr, Array4< Real const > const &  lst, Geometry const &  geom  )

static

Update intercepts.

Member Data Documentation

allcovered

constexpr int amrex::STLtools::allcovered = 1

staticconstexpr

allregular

constexpr int amrex::STLtools::allregular = -1

staticconstexpr

m_bvh_max_size

constexpr int amrex::STLtools::m_bvh_max_size = 4

staticconstexpr

m_bvh_max_splits

constexpr int amrex::STLtools::m_bvh_max_splits = 4

staticconstexpr

m_bvh_max_stack_size

constexpr int amrex::STLtools::m_bvh_max_stack_size = 12

staticconstexpr

mixedcells

constexpr int amrex::STLtools::mixedcells = 0

staticconstexpr

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

• /home/runner/work/amrex/amrex/Src/EB/AMReX_EB_STL_utils.H
• /home/runner/work/amrex/amrex/Src/EB/AMReX_EB_STL_utils.cpp