This class calls the NETGEN mesher of OCC geometry. More...

#include <NETGENPlugin_Mesher.hxx>

Public Member Functions
bool	Compute ()

bool	Evaluate (MapShapeNbElems &aResMap)

bool	FillNgMesh (netgen::OCCGeometry &occgeom, netgen::Mesh &ngMesh, std::vector< const SMDS_MeshNode * > &nodeVec, const std::list< SMESH_subMesh * > &meshedSM, SMESH_MesherHelper *quadHelper=0, SMESH_ProxyMesh::Ptr proxyMesh=SMESH_ProxyMesh::Ptr())
	fill ngMesh with nodes and elements of computed submeshes More...

double	GetProgress (const SMESH_Algo holder, const int algoProgressTic, const double *algoProgress) const

	NETGENPlugin_Mesher (SMESH_Mesh *mesh, const TopoDS_Shape &aShape, const bool isVolume)

void	SetDefaultParameters ()
	Initialize global NETGEN parameters with default values. More...

void	SetParameters (const NETGENPlugin_Hypothesis *hyp)

void	SetParameters (const NETGENPlugin_SimpleHypothesis_2D *hyp)

void	SetSelfPointer (NETGENPlugin_Mesher **ptr)

void	SetViscousLayers2DAssigned (bool isAssigned)

	~NETGENPlugin_Mesher ()

Static Public Member Functions
static void	AddIntVerticesInFaces (const netgen::OCCGeometry &occgeom, netgen::Mesh &ngMesh, std::vector< const SMDS_MeshNode * > &nodeVec, NETGENPlugin_Internals &internalShapes)
	Make netgen take internal vertices in faces into account by adding segments including internal vertices. More...

static void	AddIntVerticesInSolids (const netgen::OCCGeometry &occgeom, netgen::Mesh &ngMesh, std::vector< const SMDS_MeshNode * > &nodeVec, NETGENPlugin_Internals &internalShapes)
	Make netgen take internal vertices in solids into account by adding faces including internal vertices. More...

static SMESH_ComputeErrorPtr	AddSegmentsToMesh (netgen::Mesh &ngMesh, netgen::OCCGeometry &geom, const TSideVector &wires, SMESH_MesherHelper &helper, std::vector< const SMDS_MeshNode * > &nodeVec, const bool overrideMinH=true)
	Fill netgen mesh with segments of a FACE. More...

static int	FillSMesh (const netgen::OCCGeometry &occgeom, netgen::Mesh &ngMesh, const NETGENPlugin_ngMeshInfo &initState, SMESH_Mesh &sMesh, std::vector< const SMDS_MeshNode * > &nodeVec, SMESH_Comment &comment, SMESH_MesherHelper *quadHelper=0)
	Fill SMESH mesh according to contents of netgen mesh. More...

static bool	FixFaceMesh (const netgen::OCCGeometry &occgeom, netgen::Mesh &ngMesh, const int faceID)
	Tries to heal the mesh on a FACE. The FACE is supposed to be partially meshed due to NETGEN failure. More...

static void	FixIntFaces (const netgen::OCCGeometry &occgeom, netgen::Mesh &ngMesh, NETGENPlugin_Internals &internalShapes)
	Duplicate mesh faces on internal geom faces. More...

static double	GetDefaultMinSize (const TopoDS_Shape &shape, const double maxSize)
	Return a default min size value suitable for the given geometry. More...

static void	PrepareOCCgeometry (netgen::OCCGeometry &occgeom, const TopoDS_Shape &shape, SMESH_Mesh &mesh, std::list< SMESH_subMesh * > meshedSM=0, NETGENPlugin_Internals internalShapes=0)
	Initialize netgen::OCCGeometry with OCCT shape. More...

static SMESH_ComputeErrorPtr	ReadErrors (const std::vector< const SMDS_MeshNode * > &nodeVec)
	Read mesh entities preventing successful computation from "test.out" file. More...

static void	RemoveTmpFiles ()
	Remove "test.out" and "problemfaces" files in current directory. More...

static void	RestrictLocalSize (netgen::Mesh &ngMesh, const gp_XYZ &p, double size, const bool overrideMinH=true)
	Restrict size of elements at a given point. More...

static void	toPython (const netgen::Mesh *ngMesh, const std::string &pyFile)
	Write a python script creating an equivalent SALOME mesh. This is useful to see what mesh is passed as input for the next step of mesh generation (of mesh of higher dimension) More...

Detailed Description

This class calls the NETGEN mesher of OCC geometry.

Constructor & Destructor Documentation

◆ NETGENPlugin_Mesher()

NETGENPlugin_Mesher::NETGENPlugin_Mesher	(	SMESH_Mesh *	mesh,
		const TopoDS_Shape &	aShape,
		const bool	isVolume
	)

References SetDefaultParameters().

◆ ~NETGENPlugin_Mesher()

NETGENPlugin_Mesher::~NETGENPlugin_Mesher ( )

Destuctor

Member Function Documentation

◆ AddIntVerticesInFaces()

void NETGENPlugin_Mesher::AddIntVerticesInFaces	(	const netgen::OCCGeometry &	occgeom,
		netgen::Mesh &	ngMesh,
		std::vector< const SMDS_MeshNode * > &	nodeVec,
		NETGENPlugin_Internals &	internalShapes
	)

static

Make netgen take internal vertices in faces into account by adding segments including internal vertices.

This function works in supposition that 1D mesh is already computed in ngMesh

References SMESH_MesherHelper::AddNode(), SMESH_MesherHelper::ApplyIn2D(), SMESH_MesherHelper::CheckNodeUV(), SMESH_subMesh::COMPUTE, SMESH_subMesh::ComputeStateEngine(), NETGENPlugin_Internals::getFacesWithVertices(), NETGENPlugin_Internals::getMesh(), SMESH_MesherHelper::GetMesh(), SMESH_Mesh::GetMeshDS(), SMESH_MesherHelper::GetNodeUV(), SMESH_Mesh::GetSubMesh(), SMESHDS_Mesh::IndexToShape(), SMESH_MesherHelper::SetElementsOnShape(), SMESH_MesherHelper::SetSubShape(), SMESH_Algo::VertexNode(), SMDS_MeshNode::X(), SMDS_MeshNode::Y(), and SMDS_MeshNode::Z().

Referenced by AddSegmentsToMesh(), and Compute().

◆ AddIntVerticesInSolids()

void NETGENPlugin_Mesher::AddIntVerticesInSolids	(	const netgen::OCCGeometry &	occgeom,
		netgen::Mesh &	ngMesh,
		std::vector< const SMDS_MeshNode * > &	nodeVec,
		NETGENPlugin_Internals &	internalShapes
	)

static

Make netgen take internal vertices in solids into account by adding faces including internal vertices.

This function works in supposition that 2D mesh is already computed in ngMesh

References NETGENPlugin_Internals::getMesh(), SMESH_Mesh::GetMeshDS(), and NETGENPlugin_Internals::getSolidsWithVertices().

Referenced by Compute(), and NETGENPlugin_NETGEN_3D::Compute().

◆ AddSegmentsToMesh()

SMESH_ComputeErrorPtr NETGENPlugin_Mesher::AddSegmentsToMesh	(	netgen::Mesh &	ngMesh,
		netgen::OCCGeometry &	geom,
		const TSideVector &	wires,
		SMESH_MesherHelper &	helper,
		std::vector< const SMDS_MeshNode * > &	nodeVec,
		const bool	overrideMinH = `true`
	)

static

Fill netgen mesh with segments of a FACE.

Parameters

ngMesh	- netgen mesh
geom	- container of OCCT geometry to mesh
wires	- data of nodes on FACE boundary
helper	- mesher helper holding the FACE
nodeVec	- vector of nodes in which node index == netgen ID

Return values

SMESH_ComputeErrorPtr - error description

References AddIntVerticesInFaces(), SMESH_TNodeXYZ::Distance(), SMESH_MesherHelper::GetMesh(), SMESH_MesherHelper::GetMeshDS(), SMDS_MeshElement::getshapeId(), SMESH_MesherHelper::GetSubShape(), SMESH_MesherHelper::IsDegenShape(), SMESH_MesherHelper::IsRealSeam(), SMESH_ComputeError::New(), uvPtStruct::normParam, uvPtStruct::param, RestrictLocalSize(), SMESHDS_Mesh::ShapeToIndex(), uvPtStruct::u, uvPtStruct::v, SMESH_MesherHelper::WrapIndex(), SMDS_MeshNode::X(), SMDS_MeshNode::Y(), and SMDS_MeshNode::Z().

Referenced by Compute(), and NETGENPlugin_NETGEN_2D_ONLY::Compute().

◆ Compute()

bool NETGENPlugin_Mesher::Compute ( )

Here we are going to use the NETGEN mesher

References AddIntVerticesInFaces(), AddIntVerticesInSolids(), AddSegmentsToMesh(), StdMeshers_QuadToTriaAdaptor::Compute(), StdMeshers_ViscousLayers2D::Compute(), SMESH_Algo::EdgeLength(), FillNgMesh(), FillSMesh(), FixIntFaces(), SMESH_subMesh::GetComputeError(), GetDefaultMinSize(), StdMeshers_FaceSide::GetFaceWires(), SMESH_subMesh::GetId(), NETGENPlugin_Internals::getInternalEdges(), SMESH_MesherHelper::GetIsQuadratic(), NETGENPlugin_SimpleHypothesis_3D::GetMaxElementVolume(), SMESH_Algo::GetMeshError(), SMESH_ProxyMesh::GetProxySubMesh(), NETGENPlugin_Internals::getSolidsWithVertices(), SMESH_subMesh::GetSubMeshDS(), NETGENPlugin_Internals::hasInternalEdges(), NETGENPlugin_Internals::hasInternalFaces(), NETGENPlugin_Internals::hasInternalVertexInFace(), NETGENPlugin_Internals::hasInternalVertexInSolid(), SMESH_subMesh::IsEmpty(), SMESH_subMesh::IsMeshComputed(), SMESH_Algo::MEr_OK, netgen::merge_solids, netgen::mparam, netgen::multithread, SMESHDS_SubMesh::NbElements(), SMESHDS_SubMesh::NbNodes(), SMESH_ComputeError::New(), netgen::OCCGenerateMesh(), PrepareOCCgeometry(), ReadErrors(), NETGENPlugin_ngMeshInfo::restoreLocalH(), RestrictLocalSize(), SMESH_subMesh::SetIsAlwaysComputed(), SMESH_MesherHelper::SetIsQuadratic(), NETGENPlugin_NetgenLibWrapper::setMesh(), SMESH_MesherHelper::SetSubShape(), NETGENPlugin_ngMeshInfo::transferLocalH(), and NETGENPlugin_Hypothesis::UserDefined.

Referenced by NETGENPlugin_NETGEN_2D::Compute(), NETGENPlugin_NETGEN_2D3D::Compute(), Fem::FemMeshShapeNetgenObject::execute(), and Fem::FemMeshShapeObject::execute().

◆ Evaluate()

bool NETGENPlugin_Mesher::Evaluate ( MapShapeNbElems & aResMap )

Evaluate

References SMESH_Algo::EdgeLength(), SMESH_subMesh::GetComputeError(), GetDefaultMinSize(), NETGENPlugin_SimpleHypothesis_3D::GetMaxElementVolume(), netgen::mparam, netgen::multithread, netgen::OCCGenerateMesh(), PrepareOCCgeometry(), RestrictLocalSize(), NETGENPlugin_NetgenLibWrapper::setMesh(), and NETGENPlugin_Hypothesis::UserDefined.

Referenced by NETGENPlugin_NETGEN_2D::Evaluate(), and NETGENPlugin_NETGEN_2D3D::Evaluate().

◆ FillNgMesh()

bool NETGENPlugin_Mesher::FillNgMesh	(	netgen::OCCGeometry &	occgeom,
		netgen::Mesh &	ngMesh,
		std::vector< const SMDS_MeshNode * > &	nodeVec,
		const std::list< SMESH_subMesh * > &	meshedSM,
		SMESH_MesherHelper *	quadHelper = `0`,
		SMESH_ProxyMesh::Ptr	proxyMesh = `SMESH_ProxyMesh::Ptr()`
	)

fill ngMesh with nodes and elements of computed submeshes

Referenced by Compute().

◆ FillSMesh()

int NETGENPlugin_Mesher::FillSMesh	(	const netgen::OCCGeometry &	occgeo,
		netgen::Mesh &	ngMesh,
		const NETGENPlugin_ngMeshInfo &	initState,
		SMESH_Mesh &	sMesh,
		std::vector< const SMDS_MeshNode * > &	nodeVec,
		SMESH_Comment &	comment,
		SMESH_MesherHelper *	quadHelper = `0`
	)

static

Fill SMESH mesh according to contents of netgen mesh.

Parameters

occgeo	- container of OCCT geometry to mesh
ngMesh	- netgen mesh
initState	- bn of entities in netgen mesh before computing
sMesh	- SMESH mesh to fill in
nodeVec	- vector of nodes in which node index == netgen ID
comment	- returns problem description
quadHelper	- holder of medium nodes of sub-meshes

Return values

int - error

References SMESHDS_Mesh::AddEdge(), SMESH_MesherHelper::AddEdge(), SMESHDS_Mesh::AddFace(), SMESH_MesherHelper::AddFace(), SMESHDS_Mesh::AddNode(), SMESHDS_Mesh::AddVolume(), SMDS_Mesh::FindEdge(), SMESH_MesherHelper::GetIsQuadratic(), SMESH_Mesh::GetMeshDS(), SMDS_MeshElement::getshapeId(), SMESH_MesherHelper::GetTLinkNodeMap(), draftguitools.gui_annotationstyleeditor::param, SMESHDS_Mesh::SetMeshElementOnShape(), SMESHDS_Mesh::SetNodeInVolume(), SMESHDS_Mesh::SetNodeOnEdge(), SMESHDS_Mesh::SetNodeOnFace(), SMESHDS_Mesh::SetNodeOnVertex(), and SMESH_Algo::VertexNode().

Referenced by Compute().

◆ FixFaceMesh()

bool NETGENPlugin_Mesher::FixFaceMesh	(	const netgen::OCCGeometry &	occgeom,
		netgen::Mesh &	ngMesh,
		const int	faceID
	)

static

Tries to heal the mesh on a FACE. The FACE is supposed to be partially meshed due to NETGEN failure.

Parameters

[in]	occgeom	- geometry
[in,out]	ngMesh	- the mesh to fix
[in,out]	faceID	- ID of the FACE to fix the mesh on

Returns: bool - is mesh is or becomes OK

References Link::Contains(), Link::IsConnected(), Link::n1, and Link::n2.

Referenced by NETGENPlugin_NETGEN_2D_ONLY::Compute().

◆ FixIntFaces()

void NETGENPlugin_Mesher::FixIntFaces	(	const netgen::OCCGeometry &	occgeom,
		netgen::Mesh &	ngMesh,
		NETGENPlugin_Internals &	internalShapes
	)

static

Duplicate mesh faces on internal geom faces.

References NETGENPlugin_Internals::getMesh(), SMESH_Mesh::GetMeshDS(), NETGENPlugin_Internals::isInternalShape(), and SMESHDS_Mesh::ShapeToIndex().

Referenced by Compute().

◆ GetDefaultMinSize()

double NETGENPlugin_Mesher::GetDefaultMinSize	(	const TopoDS_Shape &	shape,
		const double	maxSize
	)

static

Return a default min size value suitable for the given geometry.

Referenced by Compute(), NETGENPlugin_NETGEN_2D_ONLY::Compute(), NETGENPlugin_NETGEN_3D::compute(), Evaluate(), and NETGENPlugin_Hypothesis::SetParametersByDefaults().

◆ GetProgress()

double NETGENPlugin_Mesher::GetProgress	(	const SMESH_Algo *	holder,
		const int *	algoProgressTic,
		const double *	algoProgress
	)		const

References netgen::multithread.

◆ PrepareOCCgeometry()

void NETGENPlugin_Mesher::PrepareOCCgeometry	(	netgen::OCCGeometry &	occgeom,
		const TopoDS_Shape &	shape,
		SMESH_Mesh &	mesh,
		std::list< SMESH_subMesh * > *	meshedSM = `0`,
		NETGENPlugin_Internals *	internalShapes = `0`
	)

static

Initialize netgen::OCCGeometry with OCCT shape.

References SMESH_subMesh::getDependsOnIterator(), SMESH_Gen::GetShapeDim(), SMESH_subMesh::GetSubShape(), SMESH_subMesh::IsEmpty(), NETGENPlugin_Internals::isShapeToPrecompute(), and netgen::mparam.

Referenced by Compute(), NETGENPlugin_NETGEN_2D_ONLY::Compute(), NETGENPlugin_NETGEN_3D::compute(), and Evaluate().

◆ ReadErrors()

SMESH_ComputeErrorPtr NETGENPlugin_Mesher::ReadErrors ( const std::vector< const SMDS_MeshNode * > & nodeVec )

static

Read mesh entities preventing successful computation from "test.out" file.

References SMESH_ComputeError::New().

Referenced by Compute(), and NETGENPlugin_NETGEN_3D::compute().

◆ RemoveTmpFiles()

void NETGENPlugin_Mesher::RemoveTmpFiles ( )

static

Remove "test.out" and "problemfaces" files in current directory.

References SMESH_File::remove().

Referenced by NETGENPlugin_NetgenLibWrapper::~NETGENPlugin_NetgenLibWrapper().

◆ RestrictLocalSize()

void NETGENPlugin_Mesher::RestrictLocalSize	(	netgen::Mesh &	ngMesh,
		const gp_XYZ &	p,
		double	size,
		const bool	overrideMinH = `true`
	)

static

Restrict size of elements at a given point.

References netgen::mparam.

Referenced by AddSegmentsToMesh(), Compute(), Evaluate(), and FillNgMesh().

◆ SetDefaultParameters()

void NETGENPlugin_Mesher::SetDefaultParameters ( )

Initialize global NETGEN parameters with default values.

References NETGENPlugin_Hypothesis::GetDefaultFineness(), NETGENPlugin_Hypothesis::GetDefaultFuseEdges(), NETGENPlugin_Hypothesis::GetDefaultGrowthRate(), NETGENPlugin_Hypothesis::GetDefaultNbSegPerEdge(), NETGENPlugin_Hypothesis::GetDefaultNbSegPerRadius(), NETGENPlugin_Hypothesis::GetDefaultQuadAllowed(), NETGENPlugin_Hypothesis::GetDefaultSecondOrder(), NETGENPlugin_Hypothesis::GetDefaultSurfaceCurvature(), netgen::merge_solids, and netgen::mparam.

Referenced by NETGENPlugin_Mesher(), and SetParameters().

◆ SetParameters() [1/2]

void NETGENPlugin_Mesher::SetParameters ( const NETGENPlugin_Hypothesis * hyp )

Pass parameters to NETGEN

Referenced by NETGENPlugin_NETGEN_2D::Compute(), NETGENPlugin_NETGEN_2D3D::Compute(), NETGENPlugin_NETGEN_2D_ONLY::Compute(), NETGENPlugin_NETGEN_3D::compute(), NETGENPlugin_NETGEN_2D::Evaluate(), NETGENPlugin_NETGEN_2D3D::Evaluate(), and Fem::FemMeshShapeNetgenObject::execute().

◆ SetParameters() [2/2]

void NETGENPlugin_Mesher::SetParameters ( const NETGENPlugin_SimpleHypothesis_2D * hyp )

Pass simple parameters to NETGEN

References SetDefaultParameters().

◆ SetSelfPointer()

void NETGENPlugin_Mesher::SetSelfPointer ( NETGENPlugin_Mesher ** ptr )

Set pointer to NETGENPlugin_Mesher* field of the holder, that will be nullified at destruction of this

Referenced by NETGENPlugin_NETGEN_2D::Compute(), and NETGENPlugin_NETGEN_2D3D::Compute().

◆ SetViscousLayers2DAssigned()

void NETGENPlugin_Mesher::SetViscousLayers2DAssigned ( bool isAssigned )

Referenced by NETGENPlugin_NETGEN_2D::Compute().

◆ toPython()

void NETGENPlugin_Mesher::toPython	(	const netgen::Mesh *	ngMesh,
		const std::string &	pyFile
	)

static

Write a python script creating an equivalent SALOME mesh. This is useful to see what mesh is passed as input for the next step of mesh generation (of mesh of higher dimension)

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

FreeCAD/src/3rdParty/salomesmesh/inc/NETGENPlugin_Mesher.hxx
FreeCAD/src/3rdParty/salomesmesh/src/NETGENPlugin/NETGENPlugin_Mesher.cpp

Public Member Functions

Static Public Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ NETGENPlugin_Mesher()

◆ ~NETGENPlugin_Mesher()

Member Function Documentation

◆ AddIntVerticesInFaces()

◆ AddIntVerticesInSolids()

◆ AddSegmentsToMesh()

◆ Compute()

◆ Evaluate()

◆ FillNgMesh()

◆ FillSMesh()

◆ FixFaceMesh()

◆ FixIntFaces()

◆ GetDefaultMinSize()

◆ GetProgress()

◆ PrepareOCCgeometry()

◆ ReadErrors()

◆ RemoveTmpFiles()

◆ RestrictLocalSize()

◆ SetDefaultParameters()

◆ SetParameters() [1/2]

◆ SetParameters() [2/2]

◆ SetSelfPointer()

◆ SetViscousLayers2DAssigned()

◆ toPython()