StdMeshers_QuadToTriaAdaptor Class Reference

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

#include <StdMeshers_QuadToTriaAdaptor.hxx>

Inheritance diagram for StdMeshers_QuadToTriaAdaptor:

Public Types
typedef boost::shared_ptr < SMESH_ProxyMesh >	Ptr
typedef std::map< const SMDS_MeshNode *, const SMDS_MeshNode *, TIDCompare >	TN2NMap

Public Member Functions
	StdMeshers_QuadToTriaAdaptor ()
	Constructor. More...
	~StdMeshers_QuadToTriaAdaptor ()
	Destructor. More...
bool	Compute (SMESH_Mesh &aMesh, const TopoDS_Shape &aShape, SMESH_ProxyMesh *aProxyMesh=0)
bool	Compute (SMESH_Mesh &aMesh)
	Computes pyramids in mesh with no shape. More...
const TopoDS_Shape &	GetShape () const
const SMESHDS_SubMesh *	GetSubMesh (const TopoDS_Shape &shape) const
	Returns the submesh of a shape; it can be a proxy sub-mesh. More...
const SubMesh *	GetProxySubMesh (const TopoDS_Shape &shape) const
	Returns the proxy sub-mesh of a shape; it can be NULL. 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...
int	NbProxySubMeshes () const
	Returns number of proxy sub-meshes. More...
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...
int	NbFaces () const
	Return total nb of faces taking into account substitutions. More...
bool	IsTemporary (const SMDS_MeshElement *elem) const
	Return true if the element is a temporary one. More...
SMESH_Mesh *	GetMesh () const
SMESHDS_Mesh *	GetMeshDS () const
	Returns mesh DS. More...

Protected Member Functions
int	Preparation (const SMDS_MeshElement *face, TColgp_Array1OfPnt &PN, TColgp_Array1OfVec &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...
bool	LimitHeight (gp_Pnt &Papex, const gp_Pnt &PC, const TColgp_Array1OfPnt &PN, const std::vector< const SMDS_MeshNode * > &FNodes, SMESH_Mesh &aMesh, const SMDS_MeshElement *NotCheckedFace, const bool UseApexRay, const TopoDS_Shape &Shape=TopoDS_Shape())
	Return allowed height of a pyramid. More...
bool	Compute2ndPart (SMESH_Mesh &aMesh, const std::vector< const SMDS_MeshElement * > &pyramids)
	Update created pyramids and faces to avoid their intersection. More...
void	MergePiramids (const SMDS_MeshElement *PrmI, const SMDS_MeshElement *PrmJ, std::set< const SMDS_MeshNode * > &nodesToMove)
	Merge the two pyramids (i.e. More...
void	MergeAdjacent (const SMDS_MeshElement *PrmI, std::set< const SMDS_MeshNode * > &nodesToMove, const bool isRecursion=false)
	Merges adjacent pyramids. More...
void	setMesh (const SMESH_Mesh &mesh)
int	shapeIndex (const TopoDS_Shape &shape) const
	Returns index of a shape. More...
virtual SubMesh *	newSubmesh (int index=0) const
SubMesh *	findProxySubMesh (int shapeIndex=0) const
	Returns a proxy sub-mesh. More...
SubMesh *	getProxySubMesh (int shapeIndex)
	Returns a proxy sub-mesh; it is created if not yet exists. More...
SubMesh *	getProxySubMesh (const TopoDS_Shape &shape=TopoDS_Shape())
	Returns a proxy sub-mesh; it is created if not yet exists. 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...
void	removeTmpElement (const SMDS_MeshElement *elem)
	Removes tmp elements from the _mesh. More...
void	storeTmpElement (const SMDS_MeshElement *elem)
	Stores tmp element residing the _mesh. More...
void	setNode2Node (const SMDS_MeshNode *srcNode, const SMDS_MeshNode *proxyNode, const SubMesh *subMesh)
	Set node-node correspondence. More...

Protected Attributes
TopoDS_Shape	myShape
std::set< const SMDS_MeshElement * >	myRemovedTrias
std::list< const SMDS_MeshNode * >	myDegNodes
const SMESH_ElementSearcher *	myElemSearcher
std::vector< SMDSAbs_EntityType >	_allowedTypes

Detailed Description

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

Member Typedef Documentation

typedef boost::shared_ptr<SMESH_ProxyMesh> SMESH_ProxyMesh::Ptr

inherited

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

inherited

Constructor & Destructor Documentation

StdMeshers_QuadToTriaAdaptor::StdMeshers_QuadToTriaAdaptor

(

)

Constructor.

StdMeshers_QuadToTriaAdaptor::~StdMeshers_QuadToTriaAdaptor

(

)

Destructor.

References myElemSearcher.

Member Function Documentation

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(), Compute2ndPart(), DEGEN_QUAD, Face, FindBestPoint(), SMESHDS_SubMesh::GetElements(), SMESH_MeshAlgos::GetElementSearcher(), SMESH_ProxyMesh::GetFaces(), SMESH_ProxyMesh::getProxySubMesh(), SMESH_ProxyMesh::GetSubMesh(), SMESH_MesherHelper::IsQuadraticSubMesh(), SMESH_MesherHelper::IsReversedSubMesh(), LimitHeight(), SMESHDS_Mesh::MeshElements(), myElemSearcher, myShape, SMESH_MesherHelper::NbAncestors(), NOT_QUAD, Preparation(), QUAD, SMESH_ProxyMesh::removeTmpElement(), SMESH_MesherHelper::SetElementsOnShape(), SMESH_ProxyMesh::setMesh(), SMESH_ProxyMesh::storeTmpElement(), SMESH_ProxyMesh::takeProxySubMesh(), and SMESH_ProxyMesh::takeTmpElemsInMesh().

bool StdMeshers_QuadToTriaAdaptor::Compute

(

SMESH_Mesh &

aMesh

)

Computes pyramids in mesh with no shape.

References SMESH_ProxyMesh::_allowedTypes, SMESH_ProxyMesh::SubMesh::AddElement(), SMESHDS_Mesh::AddFace(), SMESH_MesherHelper::AddNode(), SMESH_MesherHelper::AddVolume(), Compute2ndPart(), SMESHDS_GroupBase::Contains(), MESHCUT::d, DEGEN_QUAD, SMDS_Mesh::facesIterator(), FindBestPoint(), SMESH_ElementSearcher::FindElementsByPoint(), SMESH_MeshAlgos::GetElementSearcher(), SMESH_ElementSearcher::GetElementsNearLine(), SMDS_MeshElement::GetNode(), SMESH_ElementSearcher::GetPointState(), SMESH_ProxyMesh::getProxySubMesh(), SMESHDS_GroupBase::GetType(), HasIntersection(), SMESHDS_GroupBase::IsEmpty(), SMESH_MesherHelper::IsQuadraticSubMesh(), LimitHeight(), Min(), myElemSearcher, SMDS_MeshElement::NbCornerNodes(), NOT_QUAD, Preparation(), SMESH_MesherHelper::SetElementsOnShape(), SMESH_ProxyMesh::setMesh(), SMDSAbs_Face, SMDSAbs_Volume, SMDSEntity_Quad_Triangle, SMDSEntity_Triangle, and SMESH_ProxyMesh::storeTmpElement().

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(), SMESH_MeshAlgos::GetElementSearcher(), SMESH_ElementSearcher::GetElementsInSphere(), SMDS_MeshNode::GetInverseElementIterator(), SMESH_ProxyMesh::GetMeshDS(), SMDS_MeshElement::GetNode(), SMDS_MeshElement::GetNodeIndex(), HasIntersection3(), SMESHDS_Mesh::IsEmbeddedMode(), Max(), SMESHDS_Mesh::MaxShapeIndex(), MergeAdjacent(), MergePiramids(), SMESHDS_Mesh::MoveNode(), myDegNodes, myElemSearcher, myRemovedTrias, PYRAM_APEX, SMDS_MeshNode::setXYZ(), and SMDSAbs_Volume.

Referenced by Compute().

SMESH_ProxyMesh::SubMesh * SMESH_ProxyMesh::findProxySubMesh ( int  shapeIndex = 0 ) const

protectedinherited

Returns a proxy sub-mesh.

References SMESH_ProxyMesh::_subMeshes.

Referenced by Compute2ndPart(), SMESH_ProxyMesh::GetProxyNode(), and SMESH_ProxyMesh::takeProxySubMesh().

SMDS_ElemIteratorPtr SMESH_ProxyMesh::GetFaces ( ) const

inherited

Returns iterator on all faces of the mesh taking into account substitutions To be used in case of mesh without shape.

References SMESH_ProxyMesh::_allowedTypes, SMESH_ProxyMesh::_mesh, SMESH_ProxyMesh::_subContainer, SMESH_ProxyMesh::_subMeshes, SMESHDS_SubMesh::AddSubMesh(), SMDS_Mesh::elementsIterator(), SMESH_ProxyMesh::GetMeshDS(), SMESH_Mesh::HasShapeToMesh(), SMESH_ProxyMesh::NbFaces(), SMESH_Mesh::NbFaces(), SMESHDS_SubMesh::NbSubMeshes(), SMESHDS_SubMesh::RemoveAllSubmeshes(), and SMDSAbs_Face.

Referenced by Compute(), VISCOUS_3D::_ViscousBuilder::computeGeomSize(), and VISCOUS_3D::_ViscousBuilder::smoothAndCheck().

SMDS_ElemIteratorPtr SMESH_ProxyMesh::GetFaces ( const TopoDS_Shape &  face ) const

inherited

Returns iterator on all faces on the shape taking into account substitutions.

References SMESH_ProxyMesh::_mesh, SMESH_ProxyMesh::_subContainer, SMESHDS_SubMesh::AddSubMesh(), SMESH_ProxyMesh::GetSubMesh(), SMESH_Mesh::HasShapeToMesh(), and SMESHDS_SubMesh::RemoveAllSubmeshes().

SMESH_Mesh* SMESH_ProxyMesh::GetMesh ( ) const

inherited

References SMESH_ProxyMesh::_mesh.

Referenced by SMESH_2D_Algo::FixInternalNodes(), VISCOUS_3D::_SolidData::GetShapeEdges(), and VISCOUS_3D::_SolidData::PrepareEdgesToSmoothOnFace().

SMESHDS_Mesh * SMESH_ProxyMesh::GetMeshDS ( ) const

inherited

Returns mesh DS.

References SMESH_ProxyMesh::_mesh, and SMESH_Mesh::GetMeshDS().

Referenced by Compute2ndPart(), SMESH_2D_Algo::FixInternalNodes(), SMESH_ProxyMesh::GetFaces(), SMESH_ProxyMesh::GetProxyNode(), SMESH_ProxyMesh::GetSubMesh(), VISCOUS_3D::_ViscousBuilder::MakeN2NMap(), SMESH_ProxyMesh::NbFaces(), SMESH_ProxyMesh::removeTmpElement(), SMESH_ProxyMesh::shapeIndex(), and SMESH_ProxyMesh::~SMESH_ProxyMesh().

const SMDS_MeshNode * SMESH_ProxyMesh::GetProxyNode ( const SMDS_MeshNode *  node ) const

inherited

Returns the proxy node of a node; the input node is returned if no proxy exists.

References SMESH_ProxyMesh::_mesh, SMESH_ProxyMesh::findProxySubMesh(), SMESH_Mesh::GetAncestors(), SMESH_ProxyMesh::GetMeshDS(), SMDS_MeshNode::GetPosition(), SMDS_MeshElement::getshapeId(), SMESH_MesherHelper::GetSubShapeByNode(), SMDS_Position::GetTypeOfPosition(), SMESH_ProxyMesh::shapeIndex(), and SMDS_TOP_FACE.

Referenced by SMESH_MesherHelper::LoadNodeColumns().

const SMESH_ProxyMesh::SubMesh * SMESH_ProxyMesh::GetProxySubMesh ( const TopoDS_Shape &  shape ) const

inherited

Returns the proxy sub-mesh of a shape; it can be NULL.

References SMESH_ProxyMesh::_subMeshes, and SMESH_ProxyMesh::shapeIndex().

Referenced by VISCOUS_3D::_ViscousBuilder::MakeN2NMap().

SMESH_ProxyMesh::SubMesh * SMESH_ProxyMesh::getProxySubMesh ( int  shapeIndex )

protectedinherited

Returns a proxy sub-mesh; it is created if not yet exists.

References SMESH_ProxyMesh::_subMeshes, and SMESH_ProxyMesh::newSubmesh().

Referenced by Compute(), VISCOUS_3D::_MeshOfSolid::getFaceSubM(), and SMESH_ProxyMesh::getProxySubMesh().

SMESH_ProxyMesh::SubMesh * SMESH_ProxyMesh::getProxySubMesh ( const TopoDS_Shape &  shape = TopoDS_Shape() )

protectedinherited

Returns a proxy sub-mesh; it is created if not yet exists.

References SMESH_ProxyMesh::getProxySubMesh(), and SMESH_ProxyMesh::shapeIndex().

const TopoDS_Shape& StdMeshers_QuadToTriaAdaptor::GetShape

(

)

const

const SMESHDS_SubMesh * SMESH_ProxyMesh::GetSubMesh ( const TopoDS_Shape &  shape ) const

inherited

Returns the submesh of a shape; it can be a proxy sub-mesh.

References SMESH_ProxyMesh::_subMeshes, SMESH_ProxyMesh::GetMeshDS(), SMESHDS_Mesh::MeshElements(), and SMESH_ProxyMesh::shapeIndex().

Referenced by Compute(), SMESH_2D_Algo::FixInternalNodes(), SMESH_ProxyMesh::GetFaces(), VISCOUS_3D::_ViscousListener::GetSolidMesh(), SMESH_MesherHelper::LoadNodeColumns(), SMESH_ProxyMesh::NbFaces(), and VISCOUS_3D::_ViscousListener::RemoveSolidMesh().

bool SMESH_ProxyMesh::IsTemporary ( const SMDS_MeshElement *  elem ) const

inherited

Return true if the element is a temporary one.

References SMESH_ProxyMesh::_elemsInMesh, and SMDS_MeshElement::GetID().

Referenced by SMESH_MesherHelper::LoadNodeColumns().

bool StdMeshers_QuadToTriaAdaptor::LimitHeight ( gp_Pnt &  Papex, const gp_Pnt &  PC, const TColgp_Array1OfPnt &  PN, const std::vector< const SMDS_MeshNode * > &  FNodes, SMESH_Mesh &  aMesh, const SMDS_MeshElement *  NotCheckedFace, const bool  UseApexRay, const TopoDS_Shape &  Shape = TopoDS_Shape()  )

protected

Return allowed height of a pyramid.

Parameters

Papex	- optimal pyramid apex
PC	- gravity center of a quadrangle
PN	- four nodes of the quadrangle
aMesh	- mesh
NotCheckedFace	- the quadrangle face
Shape	- the shape being meshed

Return values

false

if mesh invalidity detected

References SMESH_MeshAlgos::GetElementSearcher(), SMDS_MeshElement::GetNode(), SMDS_MeshElement::GetNodeIndex(), HasIntersection(), HasIntersection3(), Max(), Min(), myElemSearcher, SMDS_MeshElement::NbCornerNodes(), and SMDSAbs_Face.

Referenced by Compute().

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

protected

Merges adjacent pyramids.

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

Referenced by Compute2ndPart().

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(), PYRAM_APEX, SMDS_MeshNode::setXYZ(), SMDSAbs_Face, SMDSAbs_Volume, and TRIA_APEX.

Referenced by Compute2ndPart().

int SMESH_ProxyMesh::NbFaces ( ) const

inherited

Return total nb of faces taking into account substitutions.

References SMESH_ProxyMesh::_allowedTypes, SMESH_ProxyMesh::_mesh, SMESH_ProxyMesh::_subMeshes, SMESH_ProxyMesh::GetMeshDS(), SMDS_Mesh::GetMeshInfo(), SMESH_Mesh::GetShapeToMesh(), SMESH_ProxyMesh::GetSubMesh(), SMESH_Mesh::HasShapeToMesh(), SMDS_MeshInfo::NbEntities(), SMDS_Mesh::NbFaces(), SMDSEntity_Quad_Quadrangle, and SMDSEntity_Triangle.

Referenced by SMESH_ProxyMesh::GetFaces().

int SMESH_ProxyMesh::NbProxySubMeshes ( ) const

inherited

Returns number of proxy sub-meshes.

References SMESH_ProxyMesh::_subMeshes.

virtual SubMesh* SMESH_ProxyMesh::newSubmesh ( int  index = 0 ) const

protectedvirtualinherited

Reimplemented in VISCOUS_2D::_ProxyMeshOfFace.

Referenced by SMESH_ProxyMesh::getProxySubMesh().

int StdMeshers_QuadToTriaAdaptor::Preparation ( const SMDS_MeshElement *  face, TColgp_Array1OfPnt &  PN, TColgp_Array1OfVec &  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 DEGEN_QUAD, SMDS_MeshElement::GetNode(), SMDS_MeshElement::GetNodeIndex(), myDegNodes, SMDS_MeshElement::NbCornerNodes(), SMDS_MeshElement::NbNodes(), SMDS_MeshElement::nodesIterator(), NOT_QUAD, QUAD, SMDSAbs_Volume, SMDS_MeshNode::X(), SMDS_MeshNode::Y(), and SMDS_MeshNode::Z().

Referenced by Compute().

void SMESH_ProxyMesh::removeTmpElement ( const SMDS_MeshElement *  elem )

protectedinherited

Removes tmp elements from the _mesh.

References SMESH_ProxyMesh::_elemsInMesh, SMDS_MeshElement::GetID(), SMESH_ProxyMesh::GetMeshDS(), and SMESHDS_Mesh::RemoveFreeElement().

Referenced by Compute().

void SMESH_ProxyMesh::setMesh ( const SMESH_Mesh &  mesh )

protectedinherited

References SMESH_ProxyMesh::_mesh.

Referenced by VISCOUS_3D::_MeshOfSolid::_MeshOfSolid(), and Compute().

void SMESH_ProxyMesh::setNode2Node ( const SMDS_MeshNode *  srcNode, const SMDS_MeshNode *  proxyNode, const SubMesh *  subMesh  )

protectedinherited

Set node-node correspondence.

References SMESH_ProxyMesh::SubMesh::_n2n.

Referenced by VISCOUS_3D::_MeshOfSolid::setNode2Node().

int SMESH_ProxyMesh::shapeIndex ( const TopoDS_Shape &  shape ) const

protectedinherited

Returns index of a shape.

References SMESH_ProxyMesh::_mesh, SMESH_ProxyMesh::GetMeshDS(), SMESH_Mesh::HasShapeToMesh(), and SMESHDS_Mesh::ShapeToIndex().

Referenced by VISCOUS_3D::_MeshOfSolid::getFaceSubM(), SMESH_ProxyMesh::GetProxyNode(), SMESH_ProxyMesh::GetProxySubMesh(), SMESH_ProxyMesh::getProxySubMesh(), SMESH_ProxyMesh::GetSubMesh(), and SMESH_ProxyMesh::takeProxySubMesh().

void SMESH_ProxyMesh::storeTmpElement ( const SMDS_MeshElement *  elem )

protectedinherited

Stores tmp element residing the _mesh.

References SMESH_ProxyMesh::_elemsInMesh.

Referenced by Compute().

bool SMESH_ProxyMesh::takeProxySubMesh ( const TopoDS_Shape &  shape, SMESH_ProxyMesh *  proxyMesh  )

protectedinherited

Move proxy sub-mesh from other proxy mesh to this, returns true if sub-mesh found.

References SMESH_ProxyMesh::_mesh, SMESH_ProxyMesh::_subMeshes, SMESH_ProxyMesh::findProxySubMesh(), and SMESH_ProxyMesh::shapeIndex().

Referenced by Compute().

void SMESH_ProxyMesh::takeTmpElemsInMesh ( SMESH_ProxyMesh *  proxyMesh )

protectedinherited

Move tmp elements residing the _mesh from other proxy mesh to this.

References SMESH_ProxyMesh::_elemsInMesh.

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

Field Documentation

std::vector< SMDSAbs_EntityType> SMESH_ProxyMesh::_allowedTypes

protectedinherited

Referenced by Compute(), SMESH_ProxyMesh::GetFaces(), SMESH_ProxyMesh::NbFaces(), and SMESH_ProxyMesh::SMESH_ProxyMesh().

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

protected

Referenced by Compute2ndPart(), and Preparation().

const SMESH_ElementSearcher* StdMeshers_QuadToTriaAdaptor::myElemSearcher

protected

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

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

protected

Referenced by Compute2ndPart().

TopoDS_Shape StdMeshers_QuadToTriaAdaptor::myShape

protected

Referenced by Compute().