"Transforms" quadrilateral faces into triangular ones by creation of pyramids More...

#include <StdMeshers_QuadToTriaAdaptor.hxx>

Public Member Functions
bool Compute (SMESH_Mesh &aMesh)
	Computes pyramids in mesh with no shape. More...

bool Compute (SMESH_Mesh &aMesh, const TopoDS_Shape &aShape, SMESH_ProxyMesh *aProxyMesh=0)

const TopoDS_Shape & GetShape () const

StdMeshers_QuadToTriaAdaptor ()
	Constructor. More...

~StdMeshers_QuadToTriaAdaptor ()
	Destructor. More...

Public Member Functions inherited from SMESH_ProxyMesh
SMDS_ElemIteratorPtr GetFaces () const
	Returns iterator on all faces of the mesh taking into account substitutions To be used in case of mesh without shape. More...

SMDS_ElemIteratorPtr GetFaces (const TopoDS_Shape &face) const
	Returns iterator on all faces on the shape taking into account substitutions. More...

SMESH_Mesh * GetMesh () const

SMESHDS_Mesh * GetMeshDS () const
	Returns mesh DS. More...

const SMDS_MeshNode * GetProxyNode (const SMDS_MeshNode *node) const
	Returns the proxy node of a node; the input node is returned if no proxy exists. More...

const SubMesh * GetProxySubMesh (const TopoDS_Shape &shape) const
	Returns the proxy sub-mesh of a shape; it can be NULL. More...

const SMESHDS_SubMesh * GetSubMesh (const TopoDS_Shape &shape) const
	Returns the submesh of a shape; it can be a proxy sub-mesh. More...

bool IsTemporary (const SMDS_MeshElement *elem) const
	Return true if the element is a temporary one. More...

int NbFaces () const
	Return total nb of faces taking into account substitutions. More...

int NbProxySubMeshes () const
	Returns number of proxy sub-meshes. More...

SMESH_ProxyMesh ()
	Constructor; mesh must be set by a descendant class. More...

SMESH_ProxyMesh (const SMESH_Mesh &mesh)

SMESH_ProxyMesh (std::vector< SMESH_ProxyMesh::Ptr > &components)
	Make a proxy mesh from components. Components become empty. More...

virtual ~SMESH_ProxyMesh ()
	Destructor deletes proxy submeshes and tmp elemens. More...

Protected Member Functions
bool CheckIntersection (const gp_Pnt &P, const gp_Pnt &PC, gp_Pnt &Pint, SMESH_Mesh &aMesh, const TopoDS_Shape &aShape, const SMDS_MeshElement *NotCheckedFace)
	Checks if a line segment (P,PC) intersects any mesh face. More...

bool Compute2ndPart (SMESH_Mesh &aMesh, const std::vector< const SMDS_MeshElement * > &pyramids)
	Update created pyramids and faces to avoid their intersection. More...

void MergeAdjacent (const SMDS_MeshElement PrmI, std::set< const SMDS_MeshNode > &nodesToMove)
	Merges adjacent pyramids. More...

void MergePiramids (const SMDS_MeshElement PrmI, const SMDS_MeshElement PrmJ, std::set< const SMDS_MeshNode * > &nodesToMove)
	Merge the two pyramids (i.e. fuse their apex) and others already merged with them. More...

int Preparation (const SMDS_MeshElement face, Handle(TColgp_HArray1OfPnt)&PN, Handle(TColgp_HArray1OfVec)&VN, std::vector< const SMDS_MeshNode > &FNodes, gp_Pnt &PC, gp_Vec &VNorm, const SMDS_MeshElement **volumes=0)
	Prepare data for the given face. More...

Protected Member Functions inherited from SMESH_ProxyMesh
SubMesh * findProxySubMesh (int shapeIndex=0) const
	Returns a proxy sub-mesh. More...

SubMesh * getProxySubMesh (const TopoDS_Shape &shape=TopoDS_Shape())
	Returns a proxy sub-mesh; it is created if not yet exists. More...

SubMesh * getProxySubMesh (int shapeIndex)
	Returns a proxy sub-mesh; it is created if not yet exists. More...

virtual SubMesh * newSubmesh (int index=0) const

void removeTmpElement (const SMDS_MeshElement *elem)
	Removes tmp elements from the _mesh. More...

void setMesh (const SMESH_Mesh &mesh)

void setNode2Node (const SMDS_MeshNode srcNode, const SMDS_MeshNode proxyNode, const SubMesh *subMesh)
	Set node-node correspondence. More...

int shapeIndex (const TopoDS_Shape &shape) const
	Returns index of a shape. More...

void storeTmpElement (const SMDS_MeshElement *elem)
	Stores tmp element residing the _mesh. More...

bool takeProxySubMesh (const TopoDS_Shape &shape, SMESH_ProxyMesh *proxyMesh)
	Move proxy sub-mesh from other proxy mesh to this, returns true if sub-mesh found. More...

void takeTmpElemsInMesh (SMESH_ProxyMesh *proxyMesh)
	Move tmp elements residing the _mesh from other proxy mesh to this. More...

Protected Attributes
std::list< const SMDS_MeshNode * > myDegNodes

const SMESH_ElementSearcher * myElemSearcher

std::set< const SMDS_MeshElement * > myRemovedTrias

TopoDS_Shape myShape

Additional Inherited Members
Public Types inherited from SMESH_ProxyMesh
typedef boost::shared_ptr< SMESH_ProxyMesh > Ptr

typedef std::map< const SMDS_MeshNode , const SMDS_MeshNode , TIDCompare > TN2NMap

Detailed Description

"Transforms" quadrilateral faces into triangular ones by creation of pyramids

Constructor & Destructor Documentation

◆ StdMeshers_QuadToTriaAdaptor()

StdMeshers_QuadToTriaAdaptor::StdMeshers_QuadToTriaAdaptor ( )

Constructor.

◆ ~StdMeshers_QuadToTriaAdaptor()

StdMeshers_QuadToTriaAdaptor::~StdMeshers_QuadToTriaAdaptor ( )

Destructor.

References myElemSearcher.

Member Function Documentation

◆ CheckIntersection()

bool StdMeshers_QuadToTriaAdaptor::CheckIntersection	(	const gp_Pnt &	P,
		const gp_Pnt &	PC,
		gp_Pnt &	Pint,
		SMESH_Mesh &	aMesh,
		const TopoDS_Shape &	aShape,
		const SMDS_MeshElement *	NotCheckedFace
	)

protected

Checks if a line segment (P,PC) intersects any mesh face.

Parameters

P	- first segment end
PC	- second segment end (it is a gravity center of quadrangle)
Pint	- (out) intersection point
aMesh	- mesh
aShape	- shape to check faces on
NotCheckedFace	- mesh face not to check

Return values

bool	- true if there is an intersection

References DraftVecUtils::dist(), SMESH_MeshAlgos::GetElementSearcher(), SMESH_ElementSearcher::GetElementsNearLine(), SMESH_Mesh::GetMeshDS(), and myElemSearcher.

Referenced by Compute().

◆ Compute() [1/2]

bool StdMeshers_QuadToTriaAdaptor::Compute ( SMESH_Mesh & aMesh )

Computes pyramids in mesh with no shape.

References SMESH_ProxyMesh::SubMesh::AddElement(), SMESHDS_Mesh::AddFace(), SMESH_MesherHelper::AddNode(), SMESH_MesherHelper::AddVolume(), Compute2ndPart(), SMESHDS_GroupBase::Contains(), DraftVecUtils::dist(), SMDS_Mesh::facesIterator(), SMESH_MeshAlgos::GetElementSearcher(), SMESH_ElementSearcher::GetElementsNearLine(), SMESH_Mesh::GetGroups(), SMESH_Mesh::GetMeshDS(), SMDS_MeshElement::GetNode(), SMESH_ElementSearcher::GetPointState(), SMESH_ProxyMesh::getProxySubMesh(), SMESH_Mesh::GetShapeToMesh(), SMESHDS_GroupBase::GetType(), SMESHDS_GroupBase::IsEmpty(), SMDS_MeshElement::IsQuadratic(), SMESH_MesherHelper::IsQuadraticSubMesh(), myElemSearcher, SMDS_MeshElement::NbNodes(), SMESH_Mesh::NbQuadrangles(), Preparation(), SMESH_MesherHelper::SetElementsOnShape(), SMESH_ProxyMesh::setMesh(), and SMESH_ProxyMesh::storeTmpElement().

◆ Compute() [2/2]

bool StdMeshers_QuadToTriaAdaptor::Compute	(	SMESH_Mesh &	aMesh,
		const TopoDS_Shape &	aShape,
		SMESH_ProxyMesh *	aProxyMesh = `0`
	)

References SMESHDS_Mesh::AddFace(), SMESH_MesherHelper::AddNode(), SMESH_MesherHelper::AddVolume(), SMESH_ProxyMesh::SubMesh::ChangeElements(), CheckIntersection(), Compute2ndPart(), DraftVecUtils::dist(), SMESHDS_SubMesh::GetElements(), SMESH_MeshAlgos::GetElementSearcher(), SMESH_ProxyMesh::GetFaces(), SMESH_Mesh::GetMeshDS(), SMESH_ProxyMesh::getProxySubMesh(), SMESH_ProxyMesh::GetSubMesh(), SMESH_MesherHelper::IsQuadraticSubMesh(), SMESH_MesherHelper::IsReversedSubMesh(), SMESHDS_Mesh::MeshElements(), myElemSearcher, myShape, SMESH_MesherHelper::NbAncestors(), Preparation(), SMESH_ProxyMesh::removeTmpElement(), SMESH_MesherHelper::SetElementsOnShape(), SMESH_ProxyMesh::setMesh(), SMESH_ProxyMesh::storeTmpElement(), SMESH_ProxyMesh::takeProxySubMesh(), and SMESH_ProxyMesh::takeTmpElemsInMesh().

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

◆ Compute2ndPart()

bool StdMeshers_QuadToTriaAdaptor::Compute2ndPart	(	SMESH_Mesh &	aMesh,
		const std::vector< const SMDS_MeshElement * > &	pyramids
	)

protected

Update created pyramids and faces to avoid their intersection.

References SMESH_ProxyMesh::findProxySubMesh(), SMESH_MeshAlgos::GetCommonNodes(), SMESHDS_SubMesh::GetElements(), SMESH_MeshAlgos::GetElementSearcher(), SMESH_ElementSearcher::GetElementsNearLine(), SMESH_ProxyMesh::GetMeshDS(), SMESH_Mesh::GetMeshDS(), SMDS_MeshElement::GetNode(), SMDS_MeshElement::GetNodeIndex(), SMDS_MeshElement::getshapeId(), SMESHDS_Mesh::IsEmbeddedMode(), SMESHDS_Mesh::MaxShapeIndex(), MergeAdjacent(), MergePiramids(), SMESHDS_Mesh::MoveNode(), myDegNodes, myElemSearcher, myRemovedTrias, SMDS_MeshElement::NbCornerNodes(), SMESHDS_SubMesh::NbElements(), SMDS_MeshElement::nodesIterator(), and SMDS_MeshNode::setXYZ().

Referenced by Compute().

◆ GetShape()

const TopoDS_Shape& StdMeshers_QuadToTriaAdaptor::GetShape ( ) const

Referenced by NETGENPlugin_Mesher::FillNgMesh().

◆ MergeAdjacent()

void StdMeshers_QuadToTriaAdaptor::MergeAdjacent	(	const SMDS_MeshElement *	PrmI,
		std::set< const SMDS_MeshNode * > &	nodesToMove
	)

protected

Merges adjacent pyramids.

References SMDS_MeshNode::GetInverseElementIterator(), SMDS_MeshElement::GetNode(), and SMDS_MeshElement::NbCornerNodes().

Referenced by Compute2ndPart().

◆ MergePiramids()

void StdMeshers_QuadToTriaAdaptor::MergePiramids	(	const SMDS_MeshElement *	PrmI,
		const SMDS_MeshElement *	PrmJ,
		std::set< const SMDS_MeshNode * > &	nodesToMove
	)

protected

Merge the two pyramids (i.e. fuse their apex) and others already merged with them.

References SMDS_MeshElement::begin_nodes(), SMDS_MeshElement::end_nodes(), SMDS_MeshNode::GetInverseElementIterator(), SMDS_MeshElement::GetNode(), SMDS_MeshElement::getshapeId(), SMDS_MeshElement::GetType(), SMDS_MeshNode::NbInverseElements(), and SMDS_MeshNode::setXYZ().

Referenced by Compute2ndPart().

◆ Preparation()

int StdMeshers_QuadToTriaAdaptor::Preparation	(	const SMDS_MeshElement *	face,
		Handle(TColgp_HArray1OfPnt)&	PN,
		Handle(TColgp_HArray1OfVec)&	VN,
		std::vector< const SMDS_MeshNode * > &	FNodes,
		gp_Pnt &	PC,
		gp_Vec &	VNorm,
		const SMDS_MeshElement **	volumes = `0`
	)

protected

Prepare data for the given face.

Parameters

PN	- coordinates of face nodes
VN	- cross products of vectors (PC-PN(i)) ^ (PC-PN(i+1))
FNodes	- face nodes
PC	- gravity center of nodes
VNorm	- face normal (sum of VN)
volumes	- two volumes sharing the given face, the first is in VNorm direction

Return values

int	- 0 if given face is not quad, 1 if given face is quad, 2 if given face is degenerate quad (two nodes are coincided)

References SMDS_MeshElement::GetNodeIndex(), myDegNodes, SMDS_MeshElement::NbNodes(), and SMDS_MeshElement::nodesIterator().

Referenced by Compute().

Member Data Documentation

◆ myDegNodes

std::list< const SMDS_MeshNode* > StdMeshers_QuadToTriaAdaptor::myDegNodes

protected

Referenced by Compute2ndPart(), and Preparation().

◆ myElemSearcher

const SMESH_ElementSearcher* StdMeshers_QuadToTriaAdaptor::myElemSearcher

protected

Referenced by CheckIntersection(), Compute(), Compute2ndPart(), and ~StdMeshers_QuadToTriaAdaptor().

◆ myRemovedTrias

std::set<const SMDS_MeshElement*> StdMeshers_QuadToTriaAdaptor::myRemovedTrias

protected

Referenced by Compute2ndPart().

◆ myShape

TopoDS_Shape StdMeshers_QuadToTriaAdaptor::myShape

protected

Referenced by Compute().

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

src/3rdParty/salomesmesh/inc/StdMeshers_QuadToTriaAdaptor.hxx
src/3rdParty/salomesmesh/src/StdMeshers/StdMeshers_QuadToTriaAdaptor.cpp

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ StdMeshers_QuadToTriaAdaptor()

◆ ~StdMeshers_QuadToTriaAdaptor()

Member Function Documentation

◆ CheckIntersection()

◆ Compute() [1/2]

◆ Compute() [2/2]

◆ Compute2ndPart()

◆ GetShape()

◆ MergeAdjacent()

◆ MergePiramids()

◆ Preparation()

Member Data Documentation

◆ myDegNodes

◆ myElemSearcher

◆ myRemovedTrias

◆ myShape