Represents a mesh. More...

#include <geogram/mesh/mesh.h>

Inheritance diagram for GEO::Mesh:

Public Member Functions
	Mesh (index_t dimension=3, bool single_precision=false)
	Mesh constructor. More...

virtual	~Mesh ()
	Mesh destructor.

void	clear (bool keep_attributes=true, bool keep_memory=false)
	Removes all the elements and attributes of this mesh. More...

void	show_stats (const std::string &tag="Mesh") const
	Displays number of vertices, facets and borders.

void	assert_is_valid ()
	Does some validity checks. More...

void	copy (const Mesh &rhs, bool copy_attributes=true, MeshElementsFlags what=MESH_ALL_ELEMENTS)
	Copies a mesh onto this one. More...

std::string	get_attributes () const
	Gets the list of all attributes. More...

std::string	get_scalar_attributes () const
	Gets the list of all scalar attributes. More...

std::string	get_vector_attributes (index_t max_dim=0) const
	Gets the list of all vector attributes. More...

index_t	nb_subelements_types () const
	Gets the number of subelements types. More...

MeshSubElementsStore &	get_subelements_by_index (index_t i)
	Gets a MeshSubElementsStore by index. More...

const MeshSubElementsStore &	get_subelements_by_index (index_t i) const
	Gets a MeshSubElementsStore by index. More...

MeshSubElementsStore &	get_subelements_by_type (MeshElementsFlags what)
	Gets a MeshSubElementsStore by subelements type. More...

const MeshSubElementsStore &	get_subelements_by_type (MeshElementsFlags what) const
	Gets a MeshSubElementsStore by subelements type. More...

Static Public Member Functions
static std::string	subelements_type_to_name (MeshElementsFlags what)
	Gets a subelement name by subelement type. More...

static MeshElementsFlags	name_to_subelements_type (const std::string &name)
	Gets a subelement type by subelement name. More...

static bool	parse_attribute_name (const std::string &full_attribute_name, MeshElementsFlags &where, std::string &attribute_name, index_t &component)
	Extracts localisation, name and optional component from an attribute name. More...

Public Attributes
MeshVertices	vertices

MeshEdges	edges

MeshFacets	facets

MeshFacetCornersStore	facet_corners

MeshCells	cells

MeshCellCornersStore	cell_corners

MeshCellFacetsStore	cell_facets

Protected Member Functions
void	display_attributes (const std::string &tag, const std::string &subelement_name, const MeshSubElementsStore &subelements) const
	Displays the list of attributes to the Logger. More...

Related Functions
(Note that these are not member functions.)
enum	MeshElementsFlags
	Indicates the mesh elements (vertices, facets or cells) present in a mesh. More...

Detailed Description

Represents a mesh.

A mesh can have vertices, optionally facets and optionally volumetric cells. Attributes can be attached to all elements and sub-elements.

Definition at line 2693 of file mesh.h.

Constructor & Destructor Documentation

◆ Mesh()

GEO::Mesh::Mesh	(	index_t	dimension = `3`,
		bool	single_precision = `false`
	)

Mesh constructor.

Parameters

[in]	dimension	dimension of the vertices
[in]	single_precision	if true, vertices are stored in single precision (float), else they are stored as double precision (double).

Member Function Documentation

◆ assert_is_valid()

void GEO::Mesh::assert_is_valid ( )

Does some validity checks.

Used for debugging. If the validity checks are not satisfied, then it crashes with an assertion failure.

◆ clear()

void GEO::Mesh::clear	(	bool	keep_attributes = `true`,
		bool	keep_memory = `false`
	)

Removes all the elements and attributes of this mesh.

Parameters

[in]	keep_attributes	if true, then all the existing attribute names / bindings are kept (but they are cleared). If false, they are destroyed.
[in]	keep_memory	if true, then memory is kept and can be reused by subsequent mesh element creations.

◆ copy()

void GEO::Mesh::copy	(	const Mesh &	rhs,
		bool	copy_attributes = `true`,
		MeshElementsFlags	what = `MESH_ALL_ELEMENTS`
	)

Copies a mesh onto this one.

Parameters

[in]	rhs	a const reference to the mesh to be copied
[in]	copy_attributes	if true, all the attributes are copied.
[in]	what	a combination of MESH_VERTICES, MESH_EDGES, MESH_FACETS, MESH_CELLS flags. Set to MESH_ALL_ELEMENTS to copy everything (default). If MESH_VERTICES is not set, then the mesh is cleared.

◆ display_attributes()

void GEO::Mesh::display_attributes	(	const std::string &	tag,
		const std::string &	subelement_name,
		const MeshSubElementsStore &	subelements
	)		const

protected

Displays the list of attributes to the Logger.

Parameters

[in]	tag	the tag to be sent to the Logger
[in]	subelement_name	the name of the subelement (vertices, facets, facet_corners ...)
[in]	subelements	a const reference to the MeshSubElementsStore

◆ get_attributes()

std::string GEO::Mesh::get_attributes ( ) const

Gets the list of all attributes.

Returns: a ';'-separated list of all attributes.

◆ get_scalar_attributes()

std::string GEO::Mesh::get_scalar_attributes ( ) const

Gets the list of all scalar attributes.

Returns: a ';'-separated list of all scalar attributes.

Whenever there is a vector attribute v of dim d, it appends v[0];v[1];...v[d-1] to the list.

◆ get_subelements_by_index() [1/2]

MeshSubElementsStore& GEO::Mesh::get_subelements_by_index ( index_t i )

Gets a MeshSubElementsStore by index.

Parameters

[in] i index of the subelements

Returns: a reference to the corresponding MeshSubElementsStore

Precondition: i < nb_subelements_types()

◆ get_subelements_by_index() [2/2]

const MeshSubElementsStore& GEO::Mesh::get_subelements_by_index ( index_t i ) const

Gets a MeshSubElementsStore by index.

Parameters

[in] i index of the subelements

Returns: a const reference to the corresponding MeshSubElementsStore

Precondition: i < nb_subelements_types()

◆ get_subelements_by_type() [1/2]

MeshSubElementsStore& GEO::Mesh::get_subelements_by_type ( MeshElementsFlags what )

Gets a MeshSubElementsStore by subelements type.

Parameters

[in] what one of MESH_VERTICES, MESH_EDGES, MESH_FACETS, MESH_FACET_CORNERS, MESH_CELLS, MESH_CELL_CORNERS, MESH_CELL_FACETS

Returns: a reference to the corresponding MeshSubElementsStore

◆ get_subelements_by_type() [2/2]

const MeshSubElementsStore& GEO::Mesh::get_subelements_by_type ( MeshElementsFlags what ) const

Gets a MeshSubElementsStore by subelements type.

Parameters

[in] what one of MESH_VERTICES, MESH_EDGES, MESH_FACETS, MESH_FACET_CORNERS, MESH_CELLS, MESH_CELL_CORNERS, MESH_CELL_FACETS

Returns: a const reference to the corresponding MeshSubElementsStore

◆ get_vector_attributes()

std::string GEO::Mesh::get_vector_attributes ( index_t max_dim = 0 ) const

Gets the list of all vector attributes.

Parameters

[in] max_dim if non-zero, only vector attributes of dimension lower than max_dim are returned.

Returns: a ';'-separated list of all vector attributes.

◆ name_to_subelements_type()

static MeshElementsFlags GEO::Mesh::name_to_subelements_type ( const std::string & name )

static

Gets a subelement type by subelement name.

Parameters

[in] name the name of the subelement as a string

Returns: one of MESH_VERTICES, MESH_EDGES, MESH_FACETS, MESH_FACET_CORNERS, MESH_CELLS, MESH_CELL_CORNERS, MESH_CELL_FACETS or MESH_NONE if the name is invalid

◆ nb_subelements_types()

index_t GEO::Mesh::nb_subelements_types ( ) const

Gets the number of subelements types.

Returns: the number of subelements types.

◆ parse_attribute_name()

static bool GEO::Mesh::parse_attribute_name	(	const std::string &	full_attribute_name,
		MeshElementsFlags &	where,
		std::string &	attribute_name,
		index_t &	component
	)

static

Extracts localisation, name and optional component from an attribute name.

Parameters

[in]	full_attribute_name	for instance, facets.density, or vertices.normal[0]
[out]	where	one of MESH_VERTICES, MESH_EDGES, MESH_FACETS, MESH_FACET_CORNERS, MESH_CELLS, MESH_CELL_FACETS, MESH_CELL_CORNERS
[out]	attribute_name	the name of the attribute, without the localisation and without the component
[out]	component	the component (between square brackets in `full_attribute_name`) or 0 if no component was specified

Return values

true	if the attribute name could be parsed
false	if the attribute name has invalid syntax

◆ subelements_type_to_name()

static std::string GEO::Mesh::subelements_type_to_name ( MeshElementsFlags what )

static

Gets a subelement name by subelement type.

Parameters

[in] what one of MESH_VERTICES, MESH_EDGES, MESH_FACETS, MESH_FACET_CORNERS, MESH_CELLS, MESH_CELL_CORNERS, MESH_CELL_FACETS

Returns: a string with the name of the subelement.

Friends And Related Function Documentation

◆ MeshElementsFlags

enum MeshElementsFlags

The set of elements present in a mesh is represented by a bitwise-or combination of the constants.

Definition at line 2672 of file mesh.h.

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

geogram/mesh/mesh.h

Public Member Functions

Static Public Member Functions

Public Attributes

Protected Member Functions

Related Functions

Detailed Description

Constructor & Destructor Documentation

◆ Mesh()

Member Function Documentation

◆ assert_is_valid()

◆ clear()

◆ copy()

◆ display_attributes()

◆ get_attributes()

◆ get_scalar_attributes()

◆ get_subelements_by_index() [1/2]

◆ get_subelements_by_index() [2/2]

◆ get_subelements_by_type() [1/2]

◆ get_subelements_by_type() [2/2]

◆ get_vector_attributes()

◆ name_to_subelements_type()

◆ nb_subelements_types()

◆ parse_attribute_name()

◆ subelements_type_to_name()

Friends And Related Function Documentation

◆ MeshElementsFlags