Mesh file reader in msh format. More...

Inheritance diagram for Arcane::MshMeshReader:

Collaboration diagram for Arcane::MshMeshReader:

Classes
struct	MeshV4ElementsBlock
	Information about a block for $Elements for version 4. More...
struct	MeshPhysicalName
	Information about a physical name. More...
struct	MeshPhysicalNameList
	Information about the '$PhysicalNames' block. More...
struct	MeshV4EntitiesNodes
	Info for 0D entities. More...
struct	MeshV4EntitiesWithNodes
	Info for 1D, 2D, and 3D entities. More...
struct	MeshInfo

Public Types
using	eReturnType = typename IMeshReader::eReturnType

Public Member Functions
	MshMeshReader (ITraceMng *tm)
eReturnType	readMeshFromMshFile (IMesh *mesh, const String &file_name, bool use_internal_partition) override
Public Member Functions inherited from Arcane::TraceAccessor
	TraceAccessor (ITraceMng *m)
	Constructs an accessor via the trace manager m.
	TraceAccessor (const TraceAccessor &rhs)
	Copy constructor.
TraceAccessor &	operator= (const TraceAccessor &rhs)
	Copy assignment operator.
virtual	~TraceAccessor ()
	Frees resources.
ITraceMng *	traceMng () const
	Trace manager.
TraceMessage	info () const
	Flow for an information message.
TraceMessage	pinfo () const
	Flow for a parallel information message.
TraceMessage	info (char category) const
	Flow for an information message of a given category.
TraceMessage	pinfo (char category) const
	Flow for a parallel information message of a given category.
TraceMessage	info (bool v) const
	Flow for an information message.
TraceMessage	warning () const
	Flow for a warning message.
TraceMessage	pwarning () const
TraceMessage	error () const
	Flow for an error message.
TraceMessage	perror () const
TraceMessage	log () const
	Flow for a log message.
TraceMessage	plog () const
	Flow for a log message.
TraceMessage	logdate () const
	Flow for a log message preceded by the date.
TraceMessage	fatal () const
	Flow for a fatal error message.
TraceMessage	pfatal () const
	Flow for a parallel fatal error message.
TraceMessageDbg	debug (Trace::eDebugLevel=Trace::Medium) const
	Flow for a debug message.
Trace::eDebugLevel	configDbgLevel () const
	Debug level of the configuration file.
TraceMessage	info (Int32 verbose_level) const
	Flow for an information message of a given level.
TraceMessage	linfo () const
	Flow for an information message with the local information level of this instance.
TraceMessage	linfo (Int32 relative_level) const
	Flow for an information message with the local information level of this instance.
void	fatalMessage (const StandaloneTraceMessage &o) const

Private Member Functions
eReturnType	_readNodesFromAsciiMshV2File (IosFile &, Array< Real3 > &)
eReturnType	_readNodesFromAsciiMshV4File (IosFile &, MeshInfo &mesh_info)
eReturnType	_readNodesFromBinaryMshFile (IosFile &, Array< Real3 > &)
Integer	_readElementsFromAsciiMshV2File (IosFile &, MeshInfo &mesh_info)
Integer	_readElementsFromAsciiMshV4File (IosFile &, MeshInfo &mesh_info)
	Reading elements (cells, faces, ...).
eReturnType	_readMeshFromNewMshFile (IMesh *, IosFile &)
void	_allocateCells (IMesh *mesh, MeshInfo &mesh_info, bool is_read_items)
void	_allocateGroups (IMesh *mesh, MeshInfo &mesh_info, bool is_read_items)
void	_addFaceGroup (IMesh *mesh, MeshV4ElementsBlock &block, const String &group_name)
void	_addCellGroup (IMesh *mesh, MeshV4ElementsBlock &block, const String &group_name)
void	_addNodeGroup (IMesh *mesh, MeshV4ElementsBlock &block, const String &group_name)
Integer	_switchMshType (Integer, Integer &)
void	_readPhysicalNames (IosFile &ios_file, MeshInfo &mesh_info)
void	_readEntitiesV4 (IosFile &ios_file, MeshInfo &mesh_info)
	Reading of entities.

Private Attributes
Integer	m_version = 0

Additional Inherited Members
Protected Member Functions inherited from Arcane::TraceAccessor
void	_setLocalVerboseLevel (Int32 v)
Int32	_localVerboseLevel () const

Detailed Description

Mesh file reader in msh format.

The msh format is used by the gmsh library.

The reader supports versions 2.0 and 4.1 of this format.

Only a portion of the format's features are supported:

only order 1 elements are supported.
parametric coordinates are not supported
only the $Nodes and $Entities sections are read

Definition at line 89 of file MshMeshReader.cc.

Member Typedef Documentation

◆ eReturnType

using Arcane::MshMeshReader::eReturnType = typename IMeshReader::eReturnType

Definition at line 95 of file MshMeshReader.cc.

Constructor & Destructor Documentation

◆ MshMeshReader()

Arcane::MshMeshReader::MshMeshReader ( ITraceMng * tm )

inlineexplicit

Definition at line 226 of file MshMeshReader.cc.

Member Function Documentation

◆ _addCellGroup()

void Arcane::MshMeshReader::_addCellGroup	(	IMesh *	mesh,
		MeshV4ElementsBlock &	block,
		const String &	group_name )

private

Definition at line 831 of file MshMeshReader.cc.

◆ _addFaceGroup()

void Arcane::MshMeshReader::_addFaceGroup	(	IMesh *	mesh,
		MeshV4ElementsBlock &	block,
		const String &	group_name )

private

Definition at line 763 of file MshMeshReader.cc.

◆ _addNodeGroup()

void Arcane::MshMeshReader::_addNodeGroup	(	IMesh *	mesh,
		MeshV4ElementsBlock &	block,
		const String &	group_name )

private

Definition at line 853 of file MshMeshReader.cc.

◆ _allocateCells()

void Arcane::MshMeshReader::_allocateCells	(	IMesh *	mesh,
		MeshInfo &	mesh_info,
		bool	is_read_items )

private

Definition at line 632 of file MshMeshReader.cc.

◆ _allocateGroups()

void Arcane::MshMeshReader::_allocateGroups	(	IMesh *	mesh,
		MeshInfo &	mesh_info,
		bool	is_read_items )

private

Definition at line 695 of file MshMeshReader.cc.

◆ _readElementsFromAsciiMshV2File()

Integer Arcane::MshMeshReader::_readElementsFromAsciiMshV2File	(	IosFile &	ios_file,
		MeshInfo &	mesh_info )

private

Definition at line 430 of file MshMeshReader.cc.

◆ _readElementsFromAsciiMshV4File()

Integer Arcane::MshMeshReader::_readElementsFromAsciiMshV4File	(	IosFile &	ios_file,
		MeshInfo &	mesh_info )

private

Reading elements (cells, faces, ...).

In version 4, elements are sorted by type (eItemKind)

*$Elements
   numEntityBlocks(size_t) numElements(size_t)
     minElementTag(size_t) maxElementTag(size_t)
   entityDim(int) entityTag(int) elementType(int; see below)
     numElementsInBlock(size_t)
     elementTag(size_t) nodeTag(size_t) ...
     ...
   ...
*$EndElements

Definition at line 510 of file MshMeshReader.cc.

References Arcane::Array< T >::add(), Arcane::Array< T >::addRange(), ARCANE_FATAL, ARCANE_THROW, Arcane::TraceAccessor::info(), Arcane::math::max(), and Arcane::Array< T >::resize().

Referenced by _readMeshFromNewMshFile().

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◆ _readEntitiesV4()

void Arcane::MshMeshReader::_readEntitiesV4	(	IosFile &	ios_file,
		MeshInfo &	mesh_info )

private

Reading of entities.

The format is:

*    $Entities
*      numPoints(size_t) numCurves(size_t)
*        numSurfaces(size_t) numVolumes(size_t)
*      pointTag(int) X(double) Y(double) Z(double)
*        numPhysicalTags(size_t) physicalTag(int) ...
*      ...
*      curveTag(int) minX(double) minY(double) minZ(double)
*        maxX(double) maxY(double) maxZ(double)
*        numPhysicalTags(size_t) physicalTag(int) ...
*        numBoundingPoints(size_t) pointTag(int) ...
*      ...
*      surfaceTag(int) minX(double) minY(double) minZ(double)
*        maxX(double) maxY(double) maxZ(double)
*        numPhysicalTags(size_t) physicalTag(int) ...
*        numBoundingCurves(size_t) curveTag(int) ...
*      ...
*      volumeTag(int) minX(double) minY(double) minZ(double)
*        maxX(double) maxY(double) maxZ(double)
*        numPhysicalTags(size_t) physicalTag(int) ...
*        numBoundngSurfaces(size_t) surfaceTag(int) ...
*      ...
*    $EndEntities
*

Definition at line 953 of file MshMeshReader.cc.

References ARCANE_FATAL, and Arcane::TraceAccessor::info().

Referenced by _readMeshFromNewMshFile().

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◆ _readMeshFromNewMshFile()

IMeshReader::eReturnType Arcane::MshMeshReader::_readMeshFromNewMshFile	(	IMesh *	mesh,
		IosFile &	ios_file )

private

The version 2.0 of the '.msh' file format is Gmsh's new native mesh file format. It is very similar to the old one (see Section 9.1.1 [Version 1.0], page 139), but is more general: it contains information about itself and allows to associate an arbitrary number of integer tags with each element. Ialso exists in both ASCII and binary form. The '.msh' file format, version 2.0, is divided in three main sections, defining the file format ($MeshFormat-$EndMeshFormat), the nodes ($Nodes-$EndNodes) and the elements ($Elements-$EndElements) in the mesh: /code $MeshFormat 2.0 file-type data-size (one-binary) is an integer of value 1 written in binary form. This integer is used for detecting if the computer on which the binary file was written and the computer on which the file is read are of the same type (little or big endian).

$EndMeshFormat $Nodes number-of-nodes node-number x-coord y-coord z-coord ... $EndNodes $Elements number-of-elements elm-number elm-type number-of-tags < tag > ... node-number-list ... $EndElements

Definition at line 1047 of file MshMeshReader.cc.

References _readElementsFromAsciiMshV4File(), _readEntitiesV4(), _readNodesFromAsciiMshV4File(), ARCANE_THROW, Arcane::TraceAccessor::info(), Arcane::IParallelMng::isParallel(), Arcane::IMeshReader::RTOk, and Arcane::IPrimaryMesh::setDimension().

Referenced by readMeshFromMshFile().

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◆ _readNodesFromAsciiMshV2File()

IMeshReader::eReturnType Arcane::MshMeshReader::_readNodesFromAsciiMshV2File	(	IosFile &	ios_file,
		Array< Real3 > &	node_coords )

private

Definition at line 330 of file MshMeshReader.cc.

◆ _readNodesFromAsciiMshV4File()

IMeshReader::eReturnType Arcane::MshMeshReader::_readNodesFromAsciiMshV4File	(	IosFile &	ios_file,
		MeshInfo &	mesh_info )

private

$Nodes
  numEntityBlocks(size_t) numNodes(size_t)
    minNodeTag(size_t) maxNodeTag(size_t)
  entityDim(int) entityTag(int) parametric(int; 0 or 1)
    numNodesInBlock(size_t)
    nodeTag(size_t)
    ...
    x(double) y(double) z(double)
       < u(double; if parametric and entityDim >= 1) >
       < v(double; if parametric and entityDim >= 2) >
       < w(double; if parametric and entityDim == 3) >
    ...
  ...
*$EndNodes

Definition at line 373 of file MshMeshReader.cc.

References ARCANE_THROW, Arcane::TraceAccessor::info(), Arcane::Array< T >::resize(), and Arcane::IMeshReader::RTOk.

Referenced by _readMeshFromNewMshFile().

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◆ _readNodesFromBinaryMshFile()

IMeshReader::eReturnType Arcane::MshMeshReader::_readNodesFromBinaryMshFile	(	IosFile &	ios_file,
		Array< Real3 > &	node_coords )

private

Definition at line 621 of file MshMeshReader.cc.

◆ _readPhysicalNames()

void Arcane::MshMeshReader::_readPhysicalNames	(	IosFile &	ios_file,
		MeshInfo &	mesh_info )

private

Definition at line 893 of file MshMeshReader.cc.

◆ _switchMshType()

Integer Arcane::MshMeshReader::_switchMshType	(	Integer	mshElemType,
		Integer &	nNodes )

private

Definition at line 264 of file MshMeshReader.cc.

◆ readMeshFromMshFile()

IMeshReader::eReturnType Arcane::MshMeshReader::readMeshFromMshFile	(	IMesh *	mesh,
		const String &	filename,
		bool	use_internal_partition )

overridevirtual

readMeshFromMshFile switches whether the targeted file is to be read with _readMeshFromOldMshFile or _readMeshFromNewMshFile function.

Implements Arcane::IMshMeshReader.

Definition at line 1155 of file MshMeshReader.cc.

References _readMeshFromNewMshFile(), Arcane::TraceAccessor::error(), Arcane::TraceAccessor::info(), Arcane::String::localstr(), and Arcane::IMeshReader::RTError.

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Member Data Documentation

◆ m_version

Integer Arcane::MshMeshReader::m_version = 0

private

Definition at line 234 of file MshMeshReader.cc.

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

MshMeshReader.cc

Classes

Public Types

Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ eReturnType

Constructor & Destructor Documentation

◆ MshMeshReader()

Member Function Documentation

◆ _addCellGroup()

◆ _addFaceGroup()

◆ _addNodeGroup()

◆ _allocateCells()

◆ _allocateGroups()

◆ _readElementsFromAsciiMshV2File()

◆ _readElementsFromAsciiMshV4File()

◆ _readEntitiesV4()

◆ _readMeshFromNewMshFile()

◆ _readNodesFromAsciiMshV2File()

◆ _readNodesFromAsciiMshV4File()

◆ _readNodesFromBinaryMshFile()

◆ _readPhysicalNames()

◆ _switchMshType()

◆ readMeshFromMshFile()

Member Data Documentation

◆ m_version