Mesh Class Reference

This class allows defining and managing a mesh. More...

Public Member Functions
def	__init__
	Constructor.
def	SetMesh
	Initializes the Mesh object from an instance of SMESH_Mesh interface.
def	GetMesh
	Returns the mesh, that is an instance of SMESH_Mesh interface.
def	GetName
	Gets the name of the mesh.
def	SetName
	Sets a name to the mesh.
def	GetSubMesh
	Gets the subMesh object associated to a theSubObject geometrical object.
def	GetShape
	Returns the shape associated to the mesh.
def	SetShape
	Associates the given shape to the mesh (entails the recreation of the mesh).
def	IsReadyToCompute
	Returns true if the hypotheses are defined well.
def	GetAlgoState
	Returns errors of hypotheses definition.
def	GetGeometryByMeshElement
	Returns a geometrical object on which the given element was built.
def	MeshDimension
	Returns the mesh dimension depending on the dimension of the underlying shape.
def	Segment
	Creates a segment discretization 1D algorithm.
def	UseExistingSegments
	Enables creation of nodes and segments usable by 2D algoritms.
def	UseExistingFaces
	Enables creation of nodes and faces usable by 3D algoritms.
def	Triangle
	Creates a triangle 2D algorithm for faces.
def	Quadrangle
	Creates a quadrangle 2D algorithm for faces.
def	Tetrahedron
	Creates a tetrahedron 3D algorithm for solids.
def	Hexahedron
	Creates a hexahedron 3D algorithm for solids.
def	Netgen
	Deprecated, used only for compatibility!
def	Projection1D
	Creates a projection 1D algorithm for edges.
def	Projection2D
	Creates a projection 2D algorithm for faces.
def	Projection3D
	Creates a projection 3D algorithm for solids.
def	Prism
	Creates a 3D extrusion (Prism 3D) or RadialPrism 3D algorithm for solids.
def	Evaluate
	Evaluates size of prospective mesh on a shape.
def	Compute
	Computes the mesh and returns the status of the computation.
def	Clear
	Removes all nodes and elements.
def	ClearSubMesh
	Removes all nodes and elements of indicated shape.
def	AutomaticTetrahedralization
	Computes a tetrahedral mesh using AutomaticLength + MEFISTO + NETGEN.
def	AutomaticHexahedralization
	Computes an hexahedral mesh using AutomaticLength + Quadrangle + Hexahedron.
def	AddHypothesis
	Assigns a hypothesis.
def	RemoveHypothesis
	Unassigns a hypothesis.
def	GetHypothesisList
	Gets the list of hypotheses added on a geometry.
def	RemoveGlobalHypotheses
	Removes all global hypotheses.
def	Group
	Creates a mesh group based on the geometric object grp and gives a name, if this parameter is not defined the name is the same as the geometric group name Note: Works like GroupOnGeom().
def	ExportToMED
	Deprecated, used only for compatibility! Please, use ExportMED() method instead.
def	ExportMED
	Exports the mesh in a file in MED format.
def	ExportDAT
	Exports the mesh in a file in DAT format.
def	ExportUNV
	Exports the mesh in a file in UNV format.
def	ExportSTL
	Export the mesh in a file in STL format.
def	CreateEmptyGroup
	Creates an empty mesh group.
def	GroupOnGeom
	Creates a mesh group based on the geometrical object grp and gives a name, if this parameter is not defined the name is the same as the geometrical group name.
def	MakeGroupByIds
	Creates a mesh group by the given ids of elements.
def	MakeGroup
	Creates a mesh group by the given conditions.
def	MakeGroupByCriterion
	Creates a mesh group by the given criterion.
def	MakeGroupByCriteria
	Creates a mesh group by the given criteria (list of criteria).
def	MakeGroupByFilter
	Creates a mesh group by the given filter.
def	GetIdsFromFilter
	Passes mesh elements through the given filter and return IDs of fitting elements.
def	GetFreeBorders
	Verifies whether a 2D mesh element has free edges (edges connected to one face only) Returns a list of special structures (borders).
def	RemoveGroup
	Removes a group.
def	RemoveGroupWithContents
	Removes a group with its contents.
def	GetGroups
	Gets the list of groups existing in the mesh.
def	NbGroups
	Gets the number of groups existing in the mesh.
def	GetGroupNames
	Gets the list of names of groups existing in the mesh.
def	UnionGroups
	Produces a union of two groups A new group is created.
def	UnionListOfGroups
	Produces a union list of groups New group is created.
def	IntersectGroups
	Prodices an intersection of two groups A new group is created.
def	IntersectListOfGroups
	Produces an intersection of groups New group is created.
def	CutGroups
	Produces a cut of two groups A new group is created.
def	CutListOfGroups
	Produces a cut of groups A new group is created.
def	CreateDimGroup
	Produces a group of elements with specified element type using list of existing groups A new group is created.
def	ConvertToStandalone
	Convert group on geom into standalone group.
def	GetLog
	Returns the log of nodes and elements added or removed since the previous clear of the log.
def	ClearLog
	Clears the log of nodes and elements added or removed since the previous clear.
def	SetAutoColor
	Toggles auto color mode on the object.
def	GetAutoColor
	Gets flag of object auto color mode.
def	GetId
	Gets the internal ID.
def	GetStudyId
	Get the study Id.
def	HasDuplicatedGroupNamesMED
	Checks the group names for duplications.
def	GetMeshEditor
	Obtains the mesh editor tool.
def	GetMEDMesh
	Gets MED Mesh.
def	GetMeshInfo
	Gets the mesh stattistic.
def	NbNodes
	Returns the number of nodes in the mesh.
def	NbElements
	Returns the number of elements in the mesh.
def	Nb0DElements
	Returns the number of 0d elements in the mesh.
def	NbEdges
	Returns the number of edges in the mesh.
def	NbEdgesOfOrder
	Returns the number of edges with the given order in the mesh.
def	NbFaces
	Returns the number of faces in the mesh.
def	NbFacesOfOrder
	Returns the number of faces with the given order in the mesh.
def	NbTriangles
	Returns the number of triangles in the mesh.
def	NbTrianglesOfOrder
	Returns the number of triangles with the given order in the mesh.
def	NbQuadrangles
	Returns the number of quadrangles in the mesh.
def	NbQuadranglesOfOrder
	Returns the number of quadrangles with the given order in the mesh.
def	NbPolygons
	Returns the number of polygons in the mesh.
def	NbVolumes
	Returns the number of volumes in the mesh.
def	NbVolumesOfOrder
	Returns the number of volumes with the given order in the mesh.
def	NbTetras
	Returns the number of tetrahedrons in the mesh.
def	NbTetrasOfOrder
	Returns the number of tetrahedrons with the given order in the mesh.
def	NbHexas
	Returns the number of hexahedrons in the mesh.
def	NbHexasOfOrder
	Returns the number of hexahedrons with the given order in the mesh.
def	NbPyramids
	Returns the number of pyramids in the mesh.
def	NbPyramidsOfOrder
	Returns the number of pyramids with the given order in the mesh.
def	NbPrisms
	Returns the number of prisms in the mesh.
def	NbPrismsOfOrder
	Returns the number of prisms with the given order in the mesh.
def	NbPolyhedrons
	Returns the number of polyhedrons in the mesh.
def	NbSubMesh
	Returns the number of submeshes in the mesh.
def	GetElementsId
	Returns the list of mesh elements IDs.
def	GetElementsByType
	Returns the list of IDs of mesh elements with the given type.
def	GetNodesId
	Returns the list of mesh nodes IDs.
def	GetElementType
	Returns the type of mesh element.
def	GetSubMeshElementsId
	Returns the list of submesh elements IDs.
def	GetSubMeshNodesId
	Returns the list of submesh nodes IDs.
def	GetSubMeshElementType
	Returns type of elements on given shape.
def	Dump
	Gets the mesh description.
def	GetNodeXYZ
	Gets XYZ coordinates of a node If there is no nodes for the given ID - returns an empty list.
def	GetNodeInverseElements
	Returns list of IDs of inverse elements for the given node If there is no node for the given ID - returns an empty list.
def	GetNodePosition
	Returns the position of a node on the shape.
def	GetShapeID
	If the given element is a node, returns the ID of shape If there is no node for the given ID - returns -1.
def	GetShapeIDForElem
	Returns the ID of the result shape after FindShape() from SMESH_MeshEditor for the given element If there is no element for the given ID - returns -1.
def	GetElemNbNodes
	Returns the number of nodes for the given element If there is no element for the given ID - returns -1.
def	GetElemNode
	Returns the node ID the given index for the given element If there is no element for the given ID - returns -1 If there is no node for the given index - returns -2.
def	GetElemNodes
	Returns the IDs of nodes of the given element.
def	IsMediumNode
	Returns true if the given node is the medium node in the given quadratic element.
def	IsMediumNodeOfAnyElem
	Returns true if the given node is the medium node in one of quadratic elements.
def	ElemNbEdges
	Returns the number of edges for the given element.
def	ElemNbFaces
	Returns the number of faces for the given element.
def	IsPoly
	Returns true if the given element is a polygon.
def	IsQuadratic
	Returns true if the given element is quadratic.
def	BaryCenter
	Returns XYZ coordinates of the barycenter of the given element If there is no element for the given ID - returns an empty list.
def	RemoveElements
	Removes the elements from the mesh by ids.
def	RemoveNodes
	Removes nodes from mesh by ids.
def	AddNode
	Add a node to the mesh by coordinates.
def	Add0DElement
	Creates a 0D element on a node with given number.
def	AddEdge
	Creates a linear or quadratic edge (this is determined by the number of given nodes).
def	AddFace
	Creates a linear or quadratic face (this is determined by the number of given nodes).
def	AddPolygonalFace
	Adds a polygonal face to the mesh by the list of node IDs.
def	AddVolume
	Creates both simple and quadratic volume (this is determined by the number of given nodes).
def	AddPolyhedralVolume
	Creates a volume of many faces, giving nodes for each face.
def	AddPolyhedralVolumeByFaces
	Creates a volume of many faces, giving the IDs of the existing faces.
def	SetNodeOnVertex
	Binds a node to a vertex.
def	SetNodeOnEdge
	Stores the node position on an edge.
def	SetNodeOnFace
	Stores node position on a face.
def	SetNodeInVolume
	Binds a node to a solid.
def	SetMeshElementOnShape
	Bind an element to a shape.
def	MoveNode
	Moves the node with the given id.
def	MoveClosestNodeToPoint
	Finds the node closest to a point and moves it to a point location.
def	FindNodeClosestTo
	Finds the node closest to a point.
def	FindElementsByPoint
	Finds the elements where a point lays IN or ON.
def	MeshToPassThroughAPoint
	Finds the node closest to a point and moves it to a point location.
def	InverseDiag
	Replaces two neighbour triangles sharing Node1-Node2 link with the triangles built on the same 4 nodes but having other common link.
def	DeleteDiag
	Replaces two neighbour triangles sharing Node1-Node2 link with a quadrangle built on the same 4 nodes.
def	Reorient
	Reorients elements by ids.
def	ReorientObject
	Reorients all elements of the object.
def	TriToQuad
	Fuses the neighbouring triangles into quadrangles.
def	TriToQuadObject
	Fuses the neighbouring triangles of the object into quadrangles.
def	QuadToTri
	Splits quadrangles into triangles.
def	QuadToTriObject
	Splits quadrangles into triangles.
def	SplitQuad
	Splits quadrangles into triangles.
def	SplitQuadObject
	Splits quadrangles into triangles.
def	BestSplit
	Finds a better splitting of the given quadrangle.
def	SplitQuadsNearTriangularFacets
	Splits quadrangle faces near triangular facets of volumes.
def	SplitHexaToTetras
	Splits hexahedrons into tetrahedrons.
def	SplitHexaToPrisms
	Split hexahedrons into prisms.
def	Smooth
	Smoothes elements.
def	SmoothObject
	Smoothes elements which belong to the given object.
def	SmoothParametric
	Parametrically smoothes the given elements.
def	SmoothParametricObject
	Parametrically smoothes the elements which belong to the given object.
def	ConvertToQuadratic
	Converts the mesh to quadratic, deletes old elements, replacing them with quadratic with the same id.
def	ConvertFromQuadratic
	Converts the mesh from quadratic to ordinary, deletes old quadratic elements, replacing them with ordinary mesh elements with the same id.
def	Make2DMeshFrom3D
	Creates 2D mesh as skin on boundary faces of a 3D mesh.
def	RenumberNodes
	Renumber mesh nodes.
def	RenumberElements
	Renumber mesh elements.
def	RotationSweep
	Generates new elements by rotation of the elements around the axis.
def	RotationSweepObject
	Generates new elements by rotation of the elements of object around the axis.
def	RotationSweepObject1D
	Generates new elements by rotation of the elements of object around the axis.
def	RotationSweepObject2D
	Generates new elements by rotation of the elements of object around the axis.
def	ExtrusionSweep
	Generates new elements by extrusion of the elements with given ids.
def	AdvancedExtrusion
	Generates new elements by extrusion of the elements with given ids.
def	ExtrusionSweepObject
	Generates new elements by extrusion of the elements which belong to the object.
def	ExtrusionSweepObject1D
	Generates new elements by extrusion of the elements which belong to the object.
def	ExtrusionSweepObject2D
	Generates new elements by extrusion of the elements which belong to the object.
def	ExtrusionAlongPathX
	Generates new elements by extrusion of the given elements The path of extrusion must be a meshed edge.
def	ExtrusionAlongPath
	Generates new elements by extrusion of the given elements The path of extrusion must be a meshed edge.
def	ExtrusionAlongPathObject
	Generates new elements by extrusion of the elements which belong to the object The path of extrusion must be a meshed edge.
def	ExtrusionAlongPathObject1D
	Generates new elements by extrusion of the elements which belong to the object The path of extrusion must be a meshed edge.
def	ExtrusionAlongPathObject2D
	Generates new elements by extrusion of the elements which belong to the object The path of extrusion must be a meshed edge.
def	Mirror
	Creates a symmetrical copy of mesh elements.
def	MirrorMakeMesh
	Creates a new mesh by a symmetrical copy of mesh elements.
def	MirrorObject
	Creates a symmetrical copy of the object.
def	MirrorObjectMakeMesh
	Creates a new mesh by a symmetrical copy of the object.
def	Translate
	Translates the elements.
def	TranslateMakeMesh
	Creates a new mesh of translated elements.
def	TranslateObject
	Translates the object.
def	TranslateObjectMakeMesh
	Creates a new mesh from the translated object.
def	Rotate
	Rotates the elements.
def	RotateMakeMesh
	Creates a new mesh of rotated elements.
def	RotateObject
	Rotates the object.
def	RotateObjectMakeMesh
	Creates a new mesh from the rotated object.
def	FindCoincidentNodes
	Finds groups of ajacent nodes within Tolerance.
def	FindCoincidentNodesOnPart
	Finds groups of ajacent nodes within Tolerance.
def	MergeNodes
	Merges nodes.
def	FindEqualElements
	Finds the elements built on the same nodes.
def	MergeElements
	Merges elements in each given group.
def	MergeEqualElements
	Leaves one element and removes all other elements built on the same nodes.
def	SewFreeBorders
	Sews free borders.
def	SewConformFreeBorders
	Sews conform free borders.
def	SewBorderToSide
	Sews border to side.
def	SewSideElements
	Sews two sides of a mesh.
def	ChangeElemNodes
	Sets new nodes for the given element.
def	GetLastCreatedNodes
	If during the last operation of MeshEditor some nodes were created, this method returns the list of their IDs, if new nodes were not created - returns empty list.
def	GetLastCreatedElems
	If during the last operation of MeshEditor some elements were created this method returns the list of their IDs, if new elements were not created - returns empty list.
def	DoubleNodes
def	DoubleNode
	Creates a hole in a mesh by doubling the nodes of some particular elements This method provided for convenience works as DoubleNodes() described above.
def	DoubleNodeGroup
	Creates a hole in a mesh by doubling the nodes of some particular elements This method provided for convenience works as DoubleNodes() described above.
def	DoubleNodeGroups
	Creates a hole in a mesh by doubling the nodes of some particular elements This method provided for convenience works as DoubleNodes() described above.
def	DoubleNodeElem
	Creates a hole in a mesh by doubling the nodes of some particular elements.
def	DoubleNodeElemInRegion
	Creates a hole in a mesh by doubling the nodes of some particular elements.
def	DoubleNodeElemGroup
	Creates a hole in a mesh by doubling the nodes of some particular elements This method provided for convenience works as DoubleNodes() described above.
def	DoubleNodeElemGroupInRegion
	Creates a hole in a mesh by doubling the nodes of some particular elements This method provided for convenience works as DoubleNodes() described above.
def	DoubleNodeElemGroups
	Creates a hole in a mesh by doubling the nodes of some particular elements This method provided for convenience works as DoubleNodes() described above.
def	DoubleNodeElemGroupsInRegion
	Creates a hole in a mesh by doubling the nodes of some particular elements This method provided for convenience works as DoubleNodes() described above.
Data Fields
	smeshpyD
	geompyD
	geom
	mesh
	editor
Static Public Attributes
int	geom = 0
int	mesh = 0
int	editor = 0

Detailed Description

This class allows defining and managing a mesh.

It has a set of methods to build a mesh on the given geometry, including the definition of sub-meshes. It also has methods to define groups of mesh elements, to modify a mesh (by addition of new nodes and elements and by changing the existing entities), to get information about a mesh and to export a mesh into different formats.