structure used to hold a set of convexes and/or convex faces. More...

#include <getfem_mesh_region.h>

Classes
class	visitor
	"iterator" class for regions. More...

Public Member Functions
	mesh_region (size_type id__)
	a mesh_region can be built from a integer parameter (a region number in a mesh), but it won't be usable until 'from_mesh(m)' has been called Note that these regions are read-only, this constructor is mostly used for backward-compatibility.

	mesh_region (mesh &m, size_type id__, size_type type=size_type(-1))
	internal constructor. More...

	mesh_region (const dal::bit_vector &bv)
	build a mesh_region from a convex list stored in a bit_vector.

int	region_is_faces_of (const getfem::mesh &m1, const mesh_region &rg2, const getfem::mesh &m2) const
	Test if the region is a boundary of a list of faces of elements of region `rg`. More...

void	allow_partitioning ()
	In multithreaded part of the program makes only a partition of the region visible in the index() and size() operations, as well as during iterations with mr_visitor. More...

void	bounding_box (base_node &Pmin, base_node &Pmax) const
	Return the bounding box [Pmin - Pmax] of the mesh_region.

void	prohibit_partitioning ()
	Disregard partitioning, which means being able to see the whole region in multithreaded code. More...

const mesh_region &	from_mesh (const mesh &m) const
	For regions which have been built with just a number 'id', from_mesh(m) sets the current region to 'm.region(id)'. More...

const dal::bit_vector &	index () const
	Index of the region convexes, or the convexes from the partition on the current thread.

size_type	size () const
	Region size, or the size of the region partition on the current thread if the region is partitioned.

size_type	nb_convex () const
	Number of convexes in the region, or on the partition on the current thread.

bool	is_only_faces () const
	Return true if the region do contain only convex faces.

bool	is_only_convexes () const
	Return true if the region do not contain any convex face.

Static Public Member Functions
static mesh_region	all_convexes ()
	provide a default value for the mesh_region parameters of assembly procedures etc.

static mesh_region	intersection (const mesh_region &a, const mesh_region &b)
	return the intersection of two mesh regions

static mesh_region	merge (const mesh_region &a, const mesh_region &b)
	return the union of two mesh_regions

static mesh_region	subtract (const mesh_region &a, const mesh_region &b)
	subtract the second region from the first one

static size_type	free_region_id (const getfem::mesh &m)
	Extract the next region number that does not yet exists in the mesh.

Detailed Description

structure used to hold a set of convexes and/or convex faces.

See also: mesh::region

Definition at line 55 of file getfem_mesh_region.h.

Constructor & Destructor Documentation

◆ mesh_region()

getfem::mesh_region::mesh_region	(	mesh &	m,
		size_type	id__,
		size_type	type = `size_type(-1)`
	)

internal constructor.

You should used m.region(id) instead.

Definition at line 47 of file getfem_mesh_region.cc.

Member Function Documentation

◆ region_is_faces_of()

int getfem::mesh_region::region_is_faces_of	(	const getfem::mesh &	m1,
		const mesh_region &	rg2,
		const getfem::mesh &	m2
	)		const

Test if the region is a boundary of a list of faces of elements of region rg.

Return 0 if not, -1 if only partially, 1 if the region contains only some faces which are all faces of elements of rg.

Definition at line 467 of file getfem_mesh_region.cc.

◆ allow_partitioning()

void getfem::mesh_region::allow_partitioning ( )

In multithreaded part of the program makes only a partition of the region visible in the index() and size() operations, as well as during iterations with mr_visitor.

This is a default behaviour

Definition at line 204 of file getfem_mesh_region.cc.

◆ prohibit_partitioning()

void getfem::mesh_region::prohibit_partitioning ( )

Disregard partitioning, which means being able to see the whole region in multithreaded code.

Can be used, for instance, for contact problems where master region is partitioned, while the slave region is not

Definition at line 220 of file getfem_mesh_region.cc.

◆ from_mesh()

const mesh_region & getfem::mesh_region::from_mesh ( const mesh & m ) const

For regions which have been built with just a number 'id', from_mesh(m) sets the current region to 'm.region(id)'.

(works only once)

Definition at line 72 of file getfem_mesh_region.cc.

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

src/getfem/getfem_mesh_region.h
src/getfem_mesh_region.cc

Classes

Public Member Functions

Static Public Member Functions