smeshBuilder module¶

smeshBuilder.
GetName
(obj)¶ Return a name of an object
Returns: object name

smeshBuilder.
DegreesToRadians
(AngleInDegrees)¶ Convert an angle from degrees to radians

smeshBuilder.
New
(instance=None, instanceGeom=None)¶ Create a new smeshBuilder instance. The smeshBuilder class provides the Python interface to create or load meshes.
Typical use is:
import salome salome.salome_init() from salome.smesh import smeshBuilder smesh = smeshBuilder.New()
Parameters:  instance – CORBA proxy of SMESH Engine. If None, the default Engine is used.
 instanceGeom – CORBA proxy of GEOM Engine. If None, the default Engine is used.
Returns: smeshBuilder
instance
smeshBuilder class¶

class
smeshBuilder.
smeshBuilder
(*args)¶ This class allows to create, load or manipulate meshes. It has a set of methods to create, load or copy meshes, to combine several meshes, etc. It also has methods to get infos and measure meshes.

BoundingBox
(objects)¶ Get bounding box of the specified object(s)
Parameters: objects (SMESH.SMESH_IDSource) – single source object or list of source objects Returns: tuple of six values (minX, minY, minZ, maxX, maxY, maxZ) See also

ColorToString
(c)¶ Convert SALOMEDS.Color to string. To be used with filters.
Parameters: c – color value (SALOMEDS.Color) Returns: a string representation of the color.

Concatenate
(meshes, uniteIdenticalGroups, mergeNodesAndElements=False, mergeTolerance=1e05, allGroups=False, name='', meshToAppendTo=None)¶ Concatenate the given meshes into one mesh, optionally to meshToAppendTo. All groups of input meshes will be present in the new mesh.
Parameters:  meshes –
meshes, submeshes, groups or filters
to combine into one mesh  uniteIdenticalGroups – if True, groups with same names are united, else they are renamed
 mergeNodesAndElements – if True, equal nodes and elements are merged
 mergeTolerance – tolerance for merging nodes
 allGroups – forces creation of groups corresponding to every input mesh
 name – name of a new mesh
 meshToAppendTo – a mesh to append all given meshes
Returns: an instance of class
Mesh
See also
 meshes –

CopyMesh
(meshPart, meshName, toCopyGroups=False, toKeepIDs=False)¶ Create a mesh by copying a part of another mesh.
Parameters:  meshPart – a part of mesh to copy, either
mesh, submesh, group or filter
. To copy nodes or elements not forming any mesh object, pass result ofMesh.GetIDSource()
as meshPart  meshName – a name of the new mesh
 toCopyGroups – to create in the new mesh groups the copied elements belongs to
 toKeepIDs – to preserve order of the copied elements or not
Returns: an instance of class
Mesh
 meshPart – a part of mesh to copy, either

CopyMeshWithGeom
(sourceMesh, newGeom, meshName='', toCopyGroups=True, toReuseHypotheses=True, toCopyElements=True)¶ Create a mesh by copying a mesh definition (hypotheses and groups) to a new geometry. It is supposed that the new geometry is a modified geometry of sourceMesh. To facilitate and speed up the operation, consider using “Set presentation parameters and subshapes from arguments” option in a dialog of geometrical operation used to create the new geometry.
Parameters:  sourceMesh – the mesh to copy definition of.
 newGeom – the new geometry.
 meshName – an optional name of the new mesh. If omitted, the mesh name is kept.
 toCopyGroups – to create groups in the new mesh.
 toReuseHypotheses – to reuse hypotheses of the sourceMesh.
 toCopyElements – to copy mesh elements present on nonmodified subshapes of sourceMesh.
Returns: tuple ( ok, newMesh, newGroups, newSubMeshes, newHypotheses, invalidEntries ) invalidEntries are study entries of objects whose counterparts are not found in the newGeom, followed by entries of mesh subobjects that are invalid because they depend on a not found preceding subshape

CreateHypothesis
(theHType, theLibName='libStdMeshersEngine.so')¶ Create hypothesis
Parameters:  theHType (string) – mesh hypothesis type
 theLibName (string) – mesh plugin library name
Returns: created hypothesis instance

CreateMeshesFromCGNS
(theFileName)¶ Create Mesh objects importing data from the given CGNS file
Returns: a tuple ( list of class Mesh
instances,SMESH.DriverMED_ReadStatus
)

CreateMeshesFromGMF
(theFileName)¶ Create a Mesh object importing data from the given GMF file. GMF files must have .mesh extension for the ASCII format and .meshb for the binary format.
Returns: ( an instance of class Mesh
,SMESH.ComputeError
)

CreateMeshesFromMED
(theFileName)¶ Create a Mesh object(s) importing data from the given MED file
Returns: a tuple ( list of class Mesh
instances,SMESH.DriverMED_ReadStatus
)

CreateMeshesFromSTL
(theFileName)¶ Create a Mesh object importing data from the given STL file
Returns: an instance of class Mesh

CreateMeshesFromUNV
(theFileName)¶ Create a Mesh object importing data from the given UNV file
Returns: an instance of class Mesh

DumpPython
(theStudy, theIsPublished=True, theIsMultiFile=True)¶ Dump component to the Python script. This method overrides IDL function to allow default values for the parameters.

EnumToLong
(theItem)¶ Return a long value from enumeration

GetAngle
(p1, p2, p3)¶ Computes a radian measure of an angle defined by 3 points: <(p1,p2,p3)
Parameters: p1,p2,p3 – coordinates of 3 points defined by either SMESH.PointStruct or list [x,y,z] Returns: Angle in radians

GetArea
(obj)¶ Get sum of areas of all 2D elements in the mesh object.
Parameters: obj – mesh, submesh, group or filter
Returns: sum of areas of all 2D elements

GetAxisStruct
(theObj)¶ Get
SMESH.AxisStruct
from a geometrical objectParameters: theObj (GEOM.GEOM_Object) – line or plane Returns: SMESH.AxisStruct

GetBoundingBox
(objects)¶ Get
SMESH.Measure
structure specifying bounding box data of the specified object(s)Parameters: objects (SMESH.SMESH_IDSource) – single source object or list of source objects Returns: SMESH.Measure
structureSee also

GetCriterion
(elementType, CritType, Compare=FT_EqualTo, Threshold='', UnaryOp=FT_Undefined, BinaryOp=FT_Undefined, Tolerance=1e07)¶ Create a criterion by the given parameters Criterion structures allow to define complex filters by combining them with logical operations (AND / OR) (see example below)
Parameters:  elementType – the
type of elements
(SMESH.NODE, SMESH.EDGE, SMESH.FACE, SMESH.VOLUME)  CritType – the type of criterion
SMESH.FunctorType
(SMESH.FT_Taper, SMESH.FT_Area, etc.). Note that the items starting from FT_LessThan are not suitable for CritType.  Compare – belongs to {SMESH.FT_LessThan, SMESH.FT_MoreThan, SMESH.FT_EqualTo}
 Threshold – the threshold value (range of ids as string, shape, numeric)
 UnaryOp – SMESH.FT_LogicalNOT or SMESH.FT_Undefined
 BinaryOp – a binary logical operation SMESH.FT_LogicalAND, SMESH.FT_LogicalOR or SMESH.FT_Undefined
 Tolerance – the tolerance used by SMESH.FT_BelongToGeom, SMESH.FT_BelongToSurface, SMESH.FT_LyingOnGeom, SMESH.FT_CoplanarFaces criteria
Returns:  elementType – the

GetDirStruct
(theVector)¶ Get
SMESH.DirStruct
from vectorParameters: theVector (GEOM.GEOM_Object) – vector Returns: SMESH.DirStruct

GetEmptyCriterion
()¶ Create an empty criterion
Returns: SMESH.Filter.Criterion

GetFilter
(elementType, CritType=FT_Undefined, Compare=FT_EqualTo, Threshold='', UnaryOp=FT_Undefined, Tolerance=1e07, mesh=None)¶ Create a filter with the given parameters
Parameters:  elementType – the
type of elements
(SMESH.NODE, SMESH.EDGE, SMESH.FACE, SMESH.VOLUME)  CritType – the
type of criterion
(SMESH.FT_Taper, SMESH.FT_Area, etc.). Note that the items starting from FT_LessThan are not suitable for CritType.  Compare – belongs to {SMESH.FT_LessThan, SMESH.FT_MoreThan, SMESH.FT_EqualTo}
 Threshold – the threshold value (range of ids as string, shape, numeric)
 UnaryOp – SMESH.FT_LogicalNOT or SMESH.FT_Undefined
 Tolerance – the tolerance used by SMESH.FT_BelongToGeom, SMESH.FT_BelongToSurface, SMESH.FT_LyingOnGeom, SMESH.FT_CoplanarFaces and SMESH.FT_EqualNodes criteria
 mesh – the mesh to initialize the filter with
Returns: Examples
 elementType – the

GetFilterFromCriteria
(criteria, binOp=FT_LogicalAND)¶ Create a filter from criteria
Parameters:  criteria – a list of
SMESH.Filter.Criterion
 binOp – binary operator used when binary operator of criteria is undefined
Returns: Examples
 criteria – a list of

GetFunctor
(theCriterion)¶ Create a numerical functor by its type
Parameters: theCriterion (SMESH.FunctorType) – functor type. Note that not all items correspond to numerical functors. Returns: SMESH.NumericalFunctor

GetGravityCenter
(obj)¶ Get gravity center of all nodes of a mesh object.
Parameters: obj – mesh, submesh, group or filter
Returns: Three components of the gravity center (x,y,z) See also

GetHypothesisParameterValues
(hypType, libName, mesh, shape, initParams)¶ Create hypothesis initialized according to parameters
Parameters:  hypType (string) – hypothesis type
 libName (string) – plugin library name
 mesh – optional mesh by which a hypotheses can initialize self
 shape – optional geometry by size of which a hypotheses can initialize self
 initParams – structure SMESH.HypInitParams defining how to initialize a hypothesis
Returns: created hypothesis instance

GetLength
(obj)¶ Get sum of lengths of all 1D elements in the mesh object.
Parameters: obj – mesh, submesh, group or filter
Returns: sum of lengths of all 1D elements

GetMeshInfo
(obj)¶ Get the mesh statistic.
Returns: dictionary { SMESH.EntityType
 “count of elements” }

GetMinDistance
(src1, src2=None, id1=0, id2=0, isElem1=False, isElem2=False)¶ Get
SMESH.Measure
structure specifying minimum distance data between two objects If src2 is None, and id2 = 0, distance from src1 / id1 to the origin is computed.
 If src2 is None, and id2 != 0, it is assumed that both id1 and id2 belong to src1.
Parameters:  src1 (SMESH.SMESH_IDSource) – first source object
 src2 (SMESH.SMESH_IDSource) – second source object
 id1 (int) – node/element id from the first source
 id2 (int) – node/element id from the second (or first) source
 isElem1 (boolean) – True if id1 is element id, False if it is node id
 isElem2 (boolean) – True if id2 is element id, False if it is node id
Returns: SMESH.Measure
structure or None if input data is invalidSee also

GetPattern
()¶ Create a pattern mapper.
Returns: an instance of SMESH.SMESH_Pattern

GetPointStruct
(theVertex)¶ Get
SMESH.PointStruct
from vertexParameters: theVertex (GEOM.GEOM_Object) – vertex Returns: SMESH.PointStruct

GetSubShapesId
(theMainObject, theListOfSubObjects)¶ Return IDs of subshapes
Parameters:  theMainObject (GEOM.GEOM_Object) – a shape
 theListOfSubObjects – subshapes (list of GEOM.GEOM_Object)
Returns: the list of integer values

GetVolume
(obj)¶ Get sum of volumes of all 3D elements in the mesh object.
Parameters: obj – mesh, submesh, group or filter
Returns: sum of volumes of all 3D elements

IsEmbeddedMode
()¶ Get the current mode

MakeDirStruct
(x, y, z)¶ Make
SMESH.DirStruct
from a triplet of floatsParameters: x,y,z (float) – vector components Returns: SMESH.DirStruct

Mesh
(obj=0, name=0)¶ Create a mesh. This mesh can be either
 an empty mesh not bound to geometry, if obj == 0
 an empty mesh bound to geometry, if obj is GEOM.GEOM_Object
 a mesh wrapping a
CORBA mesh
given as obj parameter.
Parameters:  obj –
either
 a
CORBA mesh
got by calling e.g.salome.myStudy.FindObjectID("0:1:2:3").GetObject()
 a geometrical object for meshing
 none.
 a
 name – the name for the new mesh.
Returns: an instance of class
Mesh
.

MinDistance
(src1, src2=None, id1=0, id2=0, isElem1=False, isElem2=False)¶ Get minimum distance between two objects
 If src2 is None, and id2 = 0, distance from src1 / id1 to the origin is computed.
 If src2 is None, and id2 != 0, it is assumed that both id1 and id2 belong to src1.
Parameters:  src1 (SMESH.SMESH_IDSource) – first source object
 src2 (SMESH.SMESH_IDSource) – second source object
 id1 (int) – node/element id from the first source
 id2 (int) – node/element id from the second (or first) source
 isElem1 (boolean) – True if id1 is element id, False if it is node id
 isElem2 (boolean) – True if id2 is element id, False if it is node id
Returns: minimum distance value
See also

RemoveMesh
(mesh)¶ Delete a mesh

SetBoundaryBoxSegmentation
(nbSegments)¶ Set number of segments per diagonal of boundary box of geometry, by which default segment length of appropriate 1D hypotheses is defined in GUI. Default value is 10.

SetDumpPythonHistorical
(isHistorical)¶ Set mode of DumpPython(), historical or snapshot. In the historical mode, the Python Dump script includes all commands performed by SMESH engine. In the snapshot mode, commands relating to objects removed from the Study are excluded from the script as well as commands not influencing the current state of meshes

SetEmbeddedMode
(theMode)¶ Set the current mode

SetEnablePublish
(theIsEnablePublish)¶ Set enable publishing in the study. Calling SetEnablePublish( False ) allows to switch off publishing in the Study of mesh objects.

SetName
(obj, name)¶ Set the given name to an object
Parameters:  obj – the object to rename
 name – a new object name

UpdateStudy
(geompyD=None)¶ Update the current study. Calling UpdateStudy() allows to update meshes at switching GEOM>SMESH

init_smesh
(geompyD=None)¶ Set Geometry component

Mesh class¶

class
smeshBuilder.
Mesh
(smeshpyD, geompyD, obj=0, name=0)¶ 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 submeshes. 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 in different formats.

Add0DElement
(IDOfNode, DuplicateElements=True)¶ Create a 0D element on a node with given number.
Parameters:  IDOfNode – the ID of node for creation of the element.
 DuplicateElements – to add one more 0D element to a node or not
Returns: ID of the new 0D element

Add0DElementsToAllNodes
(theObject, theGroupName='', DuplicateElements=False)¶ Create 0D elements on all nodes of the given elements except those nodes on which a 0D element already exists.
Parameters:  theObject – an object on whose nodes 0D elements will be created.
It can be list of element IDs,
mesh, submesh, group or filter
 theGroupName – optional name of a group to add 0D elements created and/or found on nodes of theObject.
 DuplicateElements – to add one more 0D element to a node or not
Returns: an object (a new group or a temporary
SMESH.SMESH_IDSource
) holding IDs of new and/or found 0D elements. IDs of 0D elements can be retrieved from the returned object by callingGetIDs()
 theObject – an object on whose nodes 0D elements will be created.
It can be list of element IDs,

AddBall
(IDOfNode, diameter)¶ Create a ball element on a node with given ID.
Parameters:  IDOfNode – the ID of node for creation of the element.
 diameter – the bal diameter.
Returns: ID of the new ball element

AddEdge
(IDsOfNodes)¶ Create a linear or quadratic edge (this is determined by the number of given nodes).
Parameters: IDsOfNodes – list of node IDs for creation of the element. The order of nodes in this list should correspond to the connectivity convention. Returns: ID of the new edge

AddFace
(IDsOfNodes)¶ Create a linear or quadratic face (this is determined by the number of given nodes).
Parameters: IDsOfNodes – list of node IDs for creation of the element. The order of nodes in this list should correspond to the connectivity convention. Returns: ID of the new face

AddHypothesis
(hyp, geom=0)¶ Assign a hypothesis
Parameters:  hyp – a hypothesis to assign
 geom – a subhape of mesh geometry
Returns:

AddNode
(x, y, z)¶ Add a node to the mesh by coordinates
Returns: ID of the new node

AddPolygonalFace
(IdsOfNodes)¶ Add a polygonal face defined by a list of node IDs
Parameters: IdsOfNodes – the list of node IDs for creation of the element. Returns: ID of the new face

AddPolyhedralVolume
(IdsOfNodes, Quantities)¶ Create a volume of many faces, giving nodes for each face.
Parameters:  IdsOfNodes – list of node IDs for volume creation, face by face.
 Quantities – list of integer values, Quantities[i] gives the quantity of nodes in face number i.
Returns: ID of the new volumic element

AddPolyhedralVolumeByFaces
(IdsOfFaces)¶ Create a volume of many faces, giving the IDs of the existing faces.
Note
The created volume will refer only to the nodes of the given faces, not to the faces themselves.
Parameters: IdsOfFaces – the list of face IDs for volume creation. Returns: ID of the new volumic element

AddQuadPolygonalFace
(IdsOfNodes)¶ Add a quadratic polygonal face defined by a list of node IDs
Parameters: IdsOfNodes – the list of node IDs for creation of the element; corner nodes follow first. Returns: ID of the new face

AddVolume
(IDsOfNodes)¶ Create both simple and quadratic volume (this is determined by the number of given nodes).
Parameters: IDsOfNodes – list of node IDs for creation of the element. The order of nodes in this list should correspond to the connectivity convention. Returns: ID of the new volumic element

AdvancedExtrusion
(IDsOfElements, StepVector, NbOfSteps, ExtrFlags, SewTolerance, MakeGroups=False)¶ Generate new elements by extrusion of the elements with given ids
Parameters:  IDsOfElements – is ids of elements
 StepVector – vector or
SMESH.DirStruct
or 3 vector components, defining the direction and value of extrusion for one step (the total extrusion length will be NbOfSteps * StepVector)  NbOfSteps – the number of steps
 ExtrFlags – sets flags for extrusion
 SewTolerance – uses for comparing locations of nodes if flag EXTRUSION_FLAG_SEW is set
 MakeGroups – forces the generation of new groups from existing ones
Returns: list of created
groups
if MakeGroups == True, empty list otherwise

AffectedElemGroupsInRegion
(theElems, theNodesNot, theShape)¶ Identify the elements that will be affected by node duplication (actual duplication is not performed). This method is the first step of
DoubleNodeElemGroupsInRegion()
.Parameters:  theElems – list of groups of nodes or elements (edges or faces) to replicate
 theNodesNot – list of groups of nodes NOT to replicate
 theShape – shape to detect affected elements (element which geometric center located on or inside shape). The replicated nodes should be associated to affected elements
Returns: volumes, faces, edges
Return type: groups of affected elements in order

Append
(meshes, uniteIdenticalGroups=True, mergeNodesAndElements=False, mergeTolerance=1e05, allGroups=False)¶ Append given meshes into this mesh. All groups of input meshes will be created in this mesh.
Parameters:  meshes –
meshes, submeshes, groups or filters
to append  uniteIdenticalGroups – if True, groups with same names are united, else they are renamed
 mergeNodesAndElements – if True, equal nodes and elements are merged
 mergeTolerance – tolerance for merging nodes
 allGroups – forces creation of groups corresponding to every input mesh
 meshes –

AutomaticHexahedralization
(fineness=0)¶ Compute an hexahedral mesh using AutomaticLength + Quadrangle + Hexahedron
Parameters: fineness – [0.0, 1.0] defines mesh fineness Returns: True or False

AutomaticTetrahedralization
(fineness=0)¶ Compute a tetrahedral mesh using AutomaticLength + MEFISTO + Tetrahedron
Parameters: fineness – [0.0,1.0] defines mesh fineness Returns: True or False

BaryCenter
(id)¶ Return XYZ coordinates of the barycenter of the given element. If there is no element for the given ID  return an empty list
Returns: a list of three double values See also

BestSplit
(IDOfQuad, theCriterion)¶ Find a better splitting of the given quadrangle.
Parameters:  IDOfQuad – the ID of the quadrangle to be splitted.
 theCriterion – is a numerical functor, in terms of enum
SMESH.FunctorType
, used to choose a diagonal for splitting. Note that not all items ofSMESH.FunctorType
corresponds to numerical functors.
Returns:  1 if 13 diagonal is better,
 2 if 24 diagonal is better,
 0 if error occurs.
Note
This operation can create gaps in numeration of elements. Call
RenumberElements()
to remove the gaps.

BodyFitted
(geom_shape=0)¶ Create Body Fitting 3D algorithm for volumes
This method is dynamically added to
Mesh
class by the meshing plugin(s).If the optional geom_shape parameter is not set, this algorithm is global (applied to whole mesh). Otherwise, this algorithm defines a submesh based on geom_shape subshape.
Parameters:  algo_type – type of algorithm to be created; allowed values are specified by classes implemented by plugin
 geom_shape (GEOM_Object) – if defined, the subshape to be meshed
Returns: An instance of Mesh_Algorithm subclass according to the specified algo_type, see
StdMeshersBuilder_Cartesian_3D

BoundingBox
(objects=None, isElem=False)¶ Get bounding box of the specified object(s)
Parameters:  objects – single
source object
or list of source objects or list of nodes/elements IDs  isElem – if objects is a list of IDs, True value in this parameters specifies that objects are elements, False specifies that objects are nodes
Returns: tuple of six values (minX, minY, minZ, maxX, maxY, maxZ)
See also
 objects – single

ChangeElemNodes
(ide, newIDs)¶ Set new nodes for the given element. Number of nodes should be kept.
Parameters:  ide – the element ID
 newIDs – nodes IDs
Returns: False if the number of nodes does not correspond to the type of element

Clear
(refresh=False)¶ Remove all nodes and elements generated on geometry. Imported elements remain.
Parameters: refresh – if True, Object browser is automatically updated (when running in GUI)

ClearLastCreated
()¶ Forget what nodes and elements were created by the last mesh edition operation

ClearLog
()¶ Clear the log of nodes and elements added or removed since the previous clear. Must be used immediately after
GetLog()
if clearAfterGet is false.

ClearSubMesh
(geomId, refresh=False)¶ Remove all nodes and elements of indicated shape
Parameters:  geomId – the ID of a subshape to remove elements on
 refresh – if True, Object browser is automatically updated (when running in GUI)

Compute
(geom=0, discardModifs=False, refresh=False)¶ Compute the mesh and return the status of the computation
Parameters:  geom – geomtrical shape on which mesh data should be computed
 discardModifs – if True and the mesh has been edited since a last total recompute and that may prevent successful partial recompute, then the mesh is cleaned before Compute()
 refresh – if True, Object Browser is automatically updated (when running in GUI)
Returns: True or False

ConvertFromQuadratic
(theSubMesh=None)¶ Convert the mesh from quadratic to ordinary, deletes old quadratic elements, replacing them with ordinary mesh elements with the same id.
Parameters: theSubMesh – a submesh, group or filter
to convertWarning
If theSubMesh is provided, the mesh can become nonconformal
Note
This operation can create gaps in numeration of nodes or elements. Call
RenumberElements()
to remove the gaps.

ConvertToQuadratic
(theForce3d=False, theSubMesh=None, theToBiQuad=False)¶ Convert the mesh to quadratic or biquadratic, deletes old elements, replacing them with quadratic with the same id.
Parameters:  theForce3d –
method of new node creation:
 False  the medium node lies at the geometrical entity from which the mesh element is built
 True  the medium node lies at the middle of the line segments connecting two nodes of a mesh element
 theSubMesh – a
submesh, group or filter
to convert  theToBiQuad – If True, converts the mesh to biquadratic
Returns: SMESH.ComputeError
which can hold a warningWarning
If theSubMesh is provided, the mesh can become nonconformal
Note
This operation can create gaps in numeration of nodes or elements. Call
RenumberElements()
to remove the gaps. theForce3d –

ConvertToStandalone
(group)¶ Convert group on geom into standalone group

CreateDimGroup
(groups, elemType, name, nbCommonNodes=ALL_NODES, underlyingOnly=True)¶ Create a standalone group of entities basing on nodes of other groups.
Parameters:  groups – list of
submeshes, groups or filters
, of any type.  elemType – a type of elements to include to the new group; either of (SMESH.NODE, SMESH.EDGE, SMESH.FACE, SMESH.VOLUME).
 name – a name of the new group.
 nbCommonNodes –
a criterion of inclusion of an element to the new group basing on number of element nodes common with reference groups. Meaning of possible values are:
 SMESH.ALL_NODES  include if all nodes are common,
 SMESH.MAIN  include if all corner nodes are common (meaningful for a quadratic mesh),
 SMESH.AT_LEAST_ONE  include if one or more node is common,
 SMEHS.MAJORITY  include if half of nodes or more are common.
 underlyingOnly – if True (default), an element is included to the new group provided that it is based on nodes of an element of groups; in this case the reference groups are supposed to be of higher dimension than elemType, which can be useful for example to get all faces lying on volumes of the reference groups.
Returns: an instance of
SMESH.SMESH_Group
 groups – list of

CreateEmptyGroup
(elementType, name)¶ Create an empty standalone mesh group
Parameters:  elementType – the
type
of elements in the group; either of (SMESH.NODE, SMESH.EDGE, SMESH.FACE, SMESH.VOLUME)  name – the name of the mesh group
Returns:  elementType – the

CreateFlatElementsOnFacesGroups
(theGroupsOfFaces)¶ Double nodes on some external faces and create flat elements. Flat elements are mainly used by some types of mechanic calculations.
Each group of the list must be constituted of faces. Triangles are transformed in prisms, and quadrangles in hexahedrons.
Parameters: theGroupsOfFaces – list of groups of faces Returns: True if operation has been completed successfully, False otherwise

CreateHoleSkin
(radius, theShape, groupName, theNodesCoords)¶ Identify all the elements around a geom shape, get the faces delimiting the hole

CutGroups
(main_group, tool_group, name)¶ Produce a cut of two groups. A new group is created. All mesh elements that are present in the main group but are not present in the tool group are added to the new one
Parameters:  main_group (SMESH.SMESH_GroupBase) – a group to cut from
 tool_group (SMESH.SMESH_GroupBase) – a group to cut by
Returns: an instance of
SMESH.SMESH_Group

CutListOfGroups
(main_groups, tool_groups, name)¶ Produce a cut of groups. A new group is created. All mesh elements that are present in main groups but do not present in tool groups are added to the new one
Parameters:  main_group – groups to cut from (list of
SMESH.SMESH_GroupBase
)  tool_group – groups to cut by (list of
SMESH.SMESH_GroupBase
)
Returns: an instance of
SMESH.SMESH_Group
 main_group – groups to cut from (list of

DeleteDiag
(NodeID1, NodeID2)¶ Replace two neighbour triangles sharing Node1Node2 link with a quadrangle built on the same 4 nodes.
Parameters:  NodeID1 – ID of the first node
 NodeID2 – ID of the second node
Returns: False if proper faces were not found
Note
This operation can create gaps in numeration of elements. Call
RenumberElements()
to remove the gaps.

DoubleElements
(theElements, theGroupName='')¶ Create duplicates of given elements, i.e. create new elements based on the same nodes as the given ones.
Parameters:  theElements – container of elements to duplicate. It can be a
mesh, submesh, group, filter
or a list of element IDs. If theElements is aMesh
, elements of highest dimension are duplicated  theGroupName – a name of group to contain the generated elements. If a group with such a name already exists, the new elements are added to the existing group, else a new group is created. If theGroupName is empty, new elements are not added in any group.
Returns: a
group
where the new elements are added. None if theGroupName == “”. theElements – container of elements to duplicate. It can be a

DoubleNode
(theNodeId, theModifiedElems)¶ Create a hole in a mesh by doubling the nodes of some particular elements. This method provided for convenience works as
DoubleNodes()
.Parameters:  theNodeId – IDs of node to double
 theModifiedElems – IDs of elements to update
Returns: True if operation has been completed successfully, False otherwise

DoubleNodeElem
(theElems, theNodesNot, theAffectedElems)¶ Create a hole in a mesh by doubling the nodes of some particular elements
Parameters:  theElems – the list of elements (edges or faces) to replicate. The nodes for duplication could be found from these elements
 theNodesNot – list of nodes NOT to replicate
 theAffectedElems – the list of elements (cells and edges) to which the replicated nodes should be associated to
Returns: True if operation has been completed successfully, False otherwise

DoubleNodeElemGroup
(theElems, theNodesNot, theAffectedElems, theMakeGroup=False, theMakeNodeGroup=False)¶ Create a hole in a mesh by doubling the nodes of some particular elements. This method provided for convenience works as
DoubleNodes()
.Parameters:  theElems – group of of elements (edges or faces) to replicate.
 theNodesNot – group of nodes NOT to replicate.
 theAffectedElems – group of elements to which the replicated nodes should be associated to.
 theMakeGroup – forces the generation of a group containing new elements.
 theMakeNodeGroup – forces the generation of a group containing new nodes.
Returns: True or created groups (one or two) if operation has been completed successfully, False or None otherwise

DoubleNodeElemGroupInRegion
(theElems, theNodesNot, theShape)¶ Create a hole in a mesh by doubling the nodes of some particular elements. This method provided for convenience works as
DoubleNodes()
.Parameters:  theElems – group of of elements (edges or faces) to replicate
 theNodesNot – group of nodes not to replicate
 theShape – shape to detect affected elements (element which geometric center located on or inside shape). The replicated nodes should be associated to affected elements

DoubleNodeElemGroups
(theElems, theNodesNot, theAffectedElems, theMakeGroup=False, theMakeNodeGroup=False)¶ Create a hole in a mesh by doubling the nodes of some particular elements. This method provided for convenience works as
DoubleNodes()
.Parameters:  theElems – list of groups of elements (edges or faces) to replicate
 theNodesNot – list of groups of nodes NOT to replicate
 theAffectedElems – group of elements to which the replicated nodes should be associated to
 theMakeGroup – forces generation of a group containing new elements.
 theMakeNodeGroup – forces generation of a group containing new nodes
Returns: True or created groups (one or two) if operation has been completed successfully, False or None otherwise

DoubleNodeElemGroupsInRegion
(theElems, theNodesNot, theShape)¶ Create a hole in a mesh by doubling the nodes of some particular elements. This method provided for convenience works as
DoubleNodes()
.Parameters:  theElems – list of groups of elements (edges or faces) to replicate
 theNodesNot – list of groups of nodes NOT to replicate
 theShape – shape to detect affected elements (element which geometric center located on or inside shape). The replicated nodes should be associated to affected elements
Returns: True if operation has been completed successfully, False otherwise

DoubleNodeElemInRegion
(theElems, theNodesNot, theShape)¶ Create a hole in a mesh by doubling the nodes of some particular elements
Parameters:  theElems – the list of elements (edges or faces) to replicate. The nodes for duplication could be found from these elements
 theNodesNot – list of nodes NOT to replicate
 theShape – shape to detect affected elements (element which geometric center located on or inside shape). The replicated nodes should be associated to affected elements.
Returns: True if operation has been completed successfully, False otherwise

DoubleNodeGroup
(theNodes, theModifiedElems, theMakeGroup=False)¶ Create a hole in a mesh by doubling the nodes of some particular elements. This method provided for convenience works as
DoubleNodes()
.Parameters:  theNodes – group of nodes to double.
 theModifiedElems – group of elements to update.
 theMakeGroup – forces the generation of a group containing new nodes.
Returns: True or a created group if operation has been completed successfully, False or None otherwise

DoubleNodeGroups
(theNodes, theModifiedElems, theMakeGroup=False)¶ Create a hole in a mesh by doubling the nodes of some particular elements. This method provided for convenience works as
DoubleNodes()
.Parameters:  theNodes – list of groups of nodes to double.
 theModifiedElems – list of groups of elements to update.
 theMakeGroup – forces the generation of a group containing new nodes.
Returns: True if operation has been completed successfully, False otherwise

DoubleNodes
(theNodes, theModifiedElems)¶ Create a hole in a mesh by doubling the nodes of some particular elements
Parameters:  theNodes – IDs of nodes to be doubled
 theModifiedElems – IDs of elements to be updated by the new (doubled) nodes. If list of element identifiers is empty then nodes are doubled but they not assigned to elements
Returns: True if operation has been completed successfully, False otherwise

DoubleNodesOnGroupBoundaries
(theDomains, createJointElems, onAllBoundaries=False)¶ Double nodes on shared faces between groups of volumes and create flat elements on demand. The list of groups must describe a partition of the mesh volumes. The nodes of the internal faces at the boundaries of the groups are doubled. In option, the internal faces are replaced by flat elements. Triangles are transformed to prisms, and quadrangles to hexahedrons.
Parameters:  theDomains – list of groups of volumes
 createJointElems – if True, create the elements
 onAllBoundaries – if True, the nodes and elements are also created on the boundary between theDomains and the rest mesh
Returns: True if operation has been completed successfully, False otherwise

Dump
()¶ Get the mesh description
Returns: string value

ElemNbEdges
(id)¶ Return the number of edges for the given element

ElemNbFaces
(id)¶ Return the number of faces for the given element

Evaluate
(geom=0)¶ Evaluate size of prospective mesh on a shape
Returns: a list where ith element is a number of elements of ith SMESH.EntityType
. To know predicted number of e.g. edges, inquire it this way:Evaluate()[ smesh.EnumToLong( SMESH.Entity_Edge )]

ExportCGNS
(f, overwrite=1, meshPart=None, groupElemsByType=False)¶ Export the mesh in a file in CGNS format
Parameters:  f – is the file name
 overwrite – boolean parameter for overwriting/not overwriting the file
 meshPart – a part of mesh (
submesh, group or filter
) to export instead of the mesh  groupElemsByType – if True all elements of same entity type are exported at ones, else elements are exported in order of their IDs which can cause creation of multiple cgns sections

ExportDAT
(f, meshPart=None, renumber=True)¶ Export the mesh in a file in DAT format
Parameters:  f – the file name
 meshPart – a part of mesh (
submesh, group or filter
) to export instead of the mesh  renumber (boolean) – enable renumbering nodes and cells in order to eliminate holes in numbering

ExportGMF
(f, meshPart=None)¶ Export the mesh in a file in GMF format. GMF files must have .mesh extension for the ASCII format and .meshb for the bynary format. Other extensions are not allowed.
Parameters:  f – is the file name
 meshPart – a part of mesh (
submesh, group or filter
) to export instead of the mesh

ExportMED
(*args, **kwargs)¶ Export the mesh in a file in MED format allowing to overwrite the file if it exists or add the exported data to its contents
Parameters:  fileName – is the file name
 auto_groups (boolean) – parameter for creating/not creating the groups Group_On_All_Nodes, Group_On_All_Faces, … ; the typical use is auto_groups=False.
 version (int) – define the version (xy, where version is x.y.z) of MED file format. For instance med 3.2.1 is coded 3*10+2 = 32, med 4.0.0 is coded 4*10+0 = 40. The rules of compatibility to write a mesh in an older version than the current version depend on the current version. For instance, with med 4.0 it is possible to write/append med files in 4.0.0 (default) or 3.2.1 or 3.3.1 formats. If the version is equal to 1, the version is not changed (default).
 overwrite (boolean) – parameter for overwriting/not overwriting the file
 meshPart – a part of mesh (
submesh, group or filter
) to export instead of the mesh  autoDimension –
if True (default), a space dimension of a MED mesh can be either
 1D if all mesh nodes lie on OX coordinate axis, or
 2D if all mesh nodes lie on XOY coordinate plane, or
 3D in the rest cases.
If autoDimension is False, the space dimension is always 3.
 fields – list of GEOM fields defined on the shape to mesh.
 geomAssocFields –
each character of this string means a need to export a corresponding field; correspondence between fields and characters is following:
 ’v’ stands for “_vertices_” field;
 ’e’ stands for “_edges_” field;
 ’f’ stands for “_faces_” field;
 ’s‘ stands for “_solids_” field.
 zTolerance (float) – tolerance in Z direction. If Z coordinate of a node is close to zero within a given tolerance, the coordinate is set to zero. If ZTolerance is negative (default), the node coordinates are kept as is.
 saveNumbers (boolean) – enable saving numbers of nodes and cells.

ExportMEDCoupling
(*args, **kwargs)¶ Export the mesh in a memory representation.
Parameters:  auto_groups (boolean) – parameter for creating/not creating the groups Group_On_All_Nodes, Group_On_All_Faces, … ; the typical use is auto_groups=False.
 overwrite (boolean) – parameter for overwriting/not overwriting the file
 meshPart – a part of mesh (
submesh, group or filter
) to export instead of the mesh  autoDimension –
if True (default), a space dimension of a MED mesh can be either
 1D if all mesh nodes lie on OX coordinate axis, or
 2D if all mesh nodes lie on XOY coordinate plane, or
 3D in the rest cases.
If autoDimension is False, the space dimension is always 3.
 fields – list of GEOM fields defined on the shape to mesh.
 geomAssocFields –
each character of this string means a need to export a corresponding field; correspondence between fields and characters is following:
 ’v’ stands for “_vertices_” field;
 ’e’ stands for “_edges_” field;
 ’f’ stands for “_faces_” field;
 ’s‘ stands for “_solids_” field.
 zTolerance (float) – tolerance in Z direction. If Z coordinate of a node is close to zero within a given tolerance, the coordinate is set to zero. If ZTolerance is negative (default), the node coordinates are kept as is.
 saveNumbers (boolean) – enable saving numbers of nodes and cells.

ExportSTL
(f, ascii=1, meshPart=None)¶ Export the mesh in a file in STL format
Parameters:  f – the file name
 ascii – defines the file encoding
 meshPart – a part of mesh (
submesh, group or filter
) to export instead of the mesh

ExportToMED
(*args, **kwargs)¶ Deprecated, used only for compatibility! Please, use
ExportMED()
method instead. Export the mesh in a file in MED format allowing to overwrite the file if it exists or add the exported data to its contentsParameters:  fileName – the file name
 opt (boolean) – parameter for creating/not creating the groups Group_On_All_Nodes, Group_On_All_Faces, …
 overwrite – boolean parameter for overwriting/not overwriting the file
 autoDimension –
if True (default), a space dimension of a MED mesh can be either
 1D if all mesh nodes lie on OX coordinate axis, or
 2D if all mesh nodes lie on XOY coordinate plane, or
 3D in the rest cases.
If autoDimension is False, the space dimension is always 3.

ExportToMEDX
(*args, **kwargs)¶ Deprecated, used only for compatibility! Please, use ExportMED() method instead. Export the mesh in a file in MED format
Parameters:  fileName – the file name
 opt (boolean) – parameter for creating/not creating the groups Group_On_All_Nodes, Group_On_All_Faces, …
 overwrite – boolean parameter for overwriting/not overwriting the file
 autoDimension –
if True (default), a space dimension of a MED mesh can be either
 1D if all mesh nodes lie on OX coordinate axis, or
 2D if all mesh nodes lie on XOY coordinate plane, or
 3D in the rest cases.
If autoDimension is False, the space dimension is always 3.

ExportUNV
(f, meshPart=None, renumber=True)¶ Export the mesh in a file in UNV format
Parameters:  f – the file name
 meshPart – a part of mesh (
submesh, group or filter
) to export instead of the mesh  renumber (boolean) – enable renumbering nodes and cells in order to eliminate holes in numbering

ExtrusionAlongPath
(IDsOfElements, PathMesh, PathShape, NodeStart, HasAngles=False, Angles=[], HasRefPoint=False, RefPoint=[], MakeGroups=False, LinearVariation=False)¶ Generate new elements by extrusion of the given elements. The path of extrusion must be a meshed edge.
Parameters:  IDsOfElements – ids of elements
 PathMesh – mesh containing a 1D submesh on the edge, along which proceeds the extrusion
 PathShape – shape (edge) defines the submesh for the path
 NodeStart – the first or the last node on the edge. Defines the direction of extrusion
 HasAngles – not used obsolete
 Angles – list of angles in radians. Nodes at each extrusion step are rotated around basePoint, additionally to previous steps.
 HasRefPoint – allows using the reference point
 RefPoint – the reference point around which the shape is rotated (the mass center of the shape by default).
The User can specify any point as the Reference Point.
RefPoint can be either GEOM Vertex, [x,y,z] or
SMESH.PointStruct
 MakeGroups – forces the generation of new groups from existing ones
 LinearVariation – forces the computation of rotation angles as linear variation of the given Angles along path steps
Returns: list of created
groups
anderror code
if MakeGroups == True, onlyerror code
otherwiseExample: Extrusion along a Path

ExtrusionAlongPathObject
(theObject, PathMesh, PathShape, NodeStart, HasAngles=False, Angles=[], HasRefPoint=False, RefPoint=[], MakeGroups=False, LinearVariation=False)¶ Generate new elements by extrusion of the elements which belong to the object. The path of extrusion must be a meshed edge.
Parameters:  theObject – the object whose elements should be processed.
It can be a
mesh, submesh, group or filter
.  PathMesh – mesh containing a 1D submesh on the edge, along which the extrusion proceeds
 PathShape – shape (edge) defines the submesh for the path
 NodeStart – the first or the last node on the edge. Defines the direction of extrusion
 HasAngles – not used obsolete
 Angles – list of angles in radians. Nodes at each extrusion step are rotated around basePoint, additionally to previous steps.
 HasRefPoint – allows using the reference point
 RefPoint – the reference point around which the shape is rotated (the mass center of the shape by default).
The User can specify any point as the Reference Point.
RefPoint can be either GEOM Vertex, [x,y,z] or
SMESH.PointStruct
 MakeGroups – forces the generation of new groups from existing ones
 LinearVariation – forces the computation of rotation angles as linear variation of the given Angles along path steps
Returns: list of created
groups
anderror code
if MakeGroups == True, onlyerror code
otherwiseExample: Extrusion along a Path
 theObject – the object whose elements should be processed.
It can be a

ExtrusionAlongPathObject1D
(theObject, PathMesh, PathShape, NodeStart, HasAngles=False, Angles=[], HasRefPoint=False, RefPoint=[], MakeGroups=False, LinearVariation=False)¶ Generate new elements by extrusion of mesh segments which belong to the object. The path of extrusion must be a meshed edge.
Parameters:  theObject – the object whose 1D elements should be processed.
It can be a
mesh, submesh, group or filter
.  PathMesh – mesh containing a 1D submesh on the edge, along which the extrusion proceeds
 PathShape – shape (edge) defines the submesh for the path
 NodeStart – the first or the last node on the edge. Defines the direction of extrusion
 HasAngles – not used obsolete
 Angles – list of angles in radians. Nodes at each extrusion step are rotated around basePoint, additionally to previous steps.
 HasRefPoint – allows using the reference point
 RefPoint – the reference point around which the shape is rotated (the mass center of the shape by default).
The User can specify any point as the Reference Point.
RefPoint can be either GEOM Vertex, [x,y,z] or
SMESH.PointStruct
 MakeGroups – forces the generation of new groups from existing ones
 LinearVariation – forces the computation of rotation angles as linear variation of the given Angles along path steps
Returns: list of created
groups
anderror code
if MakeGroups == True, onlyerror code
otherwiseExample: Extrusion along a Path
 theObject – the object whose 1D elements should be processed.
It can be a

ExtrusionAlongPathObject2D
(theObject, PathMesh, PathShape, NodeStart, HasAngles=False, Angles=[], HasRefPoint=False, RefPoint=[], MakeGroups=False, LinearVariation=False)¶ Generate new elements by extrusion of faces which belong to the object. The path of extrusion must be a meshed edge.
Parameters:  theObject – the object whose 2D elements should be processed.
It can be a
mesh, submesh, group or filter
.  PathMesh – mesh containing a 1D submesh on the edge, along which the extrusion proceeds
 PathShape – shape (edge) defines the submesh for the path
 NodeStart – the first or the last node on the edge. Defines the direction of extrusion
 HasAngles – not used obsolete
 Angles – list of angles in radians. Nodes at each extrusion step are rotated around basePoint, additionally to previous steps.
 HasRefPoint – allows using the reference point
 RefPoint – the reference point around which the shape is rotated (the mass center of the shape by default).
The User can specify any point as the Reference Point.
RefPoint can be either GEOM Vertex, [x,y,z] or
SMESH.PointStruct
 MakeGroups – forces the generation of new groups from existing ones
 LinearVariation – forces the computation of rotation angles as linear variation of the given Angles along path steps
Returns: list of created
groups
anderror code
if MakeGroups == True, onlyerror code
otherwiseExample: Extrusion along a Path
 theObject – the object whose 2D elements should be processed.
It can be a

ExtrusionAlongPathObjects
(Nodes, Edges, Faces, PathObject, PathShape=None, NodeStart=1, HasAngles=False, Angles=[], LinearVariation=False, HasRefPoint=False, RefPoint=[0, 0, 0], MakeGroups=False, ScaleFactors=[], ScalesVariation=False)¶ Generate new elements by extrusion of the given elements and nodes along the path. The path of extrusion must be a meshed edge.
Parameters:  Nodes – nodes to extrude: a list including ids,
a mesh, submeshes, groups or filters
 Edges – edges to extrude: a list including ids,
a mesh, submeshes, groups or filters
 Faces – faces to extrude: a list including ids,
a mesh, submeshes, groups or filters
 PathObject –
mesh, submesh, group or filter
containing edges along which proceeds the extrusion  PathShape – optional shape (edge or wire) which defines the submesh of the mesh defined by PathObject if the mesh contains not only path segments, else it can be None
 NodeStart – the first or the last node on the path. Defines the direction of extrusion
 HasAngles – not used obsolete
 Angles – list of angles in radians. Nodes at each extrusion step are rotated around basePoint, additionally to previous steps.
 LinearVariation – forces the computation of rotation angles as linear variation of the given Angles along path steps
 HasRefPoint – allows using the reference point
 RefPoint – optional scaling and rotation center (mass center of the extruded
elements by default). The User can specify any point as the Reference Point.
RefPoint can be either GEOM Vertex, [x,y,z] or
SMESH.PointStruct
 MakeGroups – forces the generation of new groups from existing ones
 ScaleFactors – optional scale factors to apply during extrusion
 ScalesVariation – if True, scaleFactors are spread over all NbOfSteps, else scaleFactors [i] is applied to nodes at the ith extrusion step
Returns: list of created
groups
anderror code
Example: Extrusion along a Path
 Nodes – nodes to extrude: a list including ids,

ExtrusionAlongPathX
(Base, Path, NodeStart, HasAngles=False, Angles=[], LinearVariation=False, HasRefPoint=False, RefPoint=[0, 0, 0], MakeGroups=False, ElemType=FACE)¶ Generate new elements by extrusion of the given elements. The path of extrusion must be a meshed edge.
Parameters:  Base –
mesh, submesh, group, filter
, or list of ids of elements for extrusion  Path – 1D mesh or 1D submesh, along which proceeds the extrusion
 NodeStart – the start node from Path. Defines the direction of extrusion
 HasAngles – not used obsolete
 Angles – list of angles in radians. Nodes at each extrusion step are rotated around basePoint, additionally to previous steps.
 LinearVariation – forces the computation of rotation angles as linear variation of the given Angles along path steps
 HasRefPoint – allows using the reference point
 RefPoint – the reference point around which the elements are rotated (the mass
center of the elements by default).
The User can specify any point as the Reference Point.
RefPoint can be either GEOM Vertex, [x,y,z] or
SMESH.PointStruct
 MakeGroups – forces the generation of new groups from existing ones
 ElemType – type of elements for extrusion (if param Base is a mesh)
Returns: list of created
groups
anderror code
if MakeGroups == True, onlyerror code
otherwiseExample: Extrusion along a Path
 Base –

ExtrusionByNormal
(Elements, StepSize, NbOfSteps, ByAverageNormal=False, UseInputElemsOnly=True, MakeGroups=False, Dim=2)¶ Generate new elements by extrusion along the normal to a discretized surface or wire
Parameters:  Elements – elements to extrude  a list including ids,
a mesh, submeshes, groups or filters
. Only faces can be extruded so far. A submesh should be a submesh on geom faces.  StepSize – length of one extrusion step (the total extrusion length will be NbOfSteps StepSize).
 NbOfSteps – number of extrusion steps.
 ByAverageNormal – if True each node is translated by StepSize along the average of the normal vectors to the faces sharing the node; else each node is translated along the same average normal till intersection with the plane got by translation of the face sharing the node along its own normal by StepSize.
 UseInputElemsOnly – to use only Elements when computing extrusion direction for every node of Elements.
 MakeGroups – forces generation of new groups from existing ones.
 Dim – dimension of elements to extrude: 2  faces or 1  edges. Extrusion of edges is not yet implemented. This parameter is used if Elements contains both faces and edges, i.e. Elements is a Mesh.
Returns: the list of created
groups
if MakeGroups == True, empty list otherwise.Example: Extrusion
 Elements – elements to extrude  a list including ids,

ExtrusionSweep
(IDsOfElements, StepVector, NbOfSteps, MakeGroups=False, IsNodes=False)¶ Generate new elements by extrusion of the elements with given ids
Parameters:  IDsOfElements – the list of ids of elements or nodes for extrusion
 StepVector – vector or
SMESH.DirStruct
or 3 vector components, defining the direction and value of extrusion for one step (the total extrusion length will be NbOfSteps * StepVector)  NbOfSteps – the number of steps
 MakeGroups – forces the generation of new groups from existing ones
 IsNodes – is True if elements with given ids are nodes
Returns: the list of created
groups
if MakeGroups == True, empty list otherwiseExample: Extrusion

ExtrusionSweepObject
(theObject, StepVector, NbOfSteps, MakeGroups=False, IsNodes=False)¶ Generate new elements by extrusion of the elements or nodes which belong to the object
Parameters:  theObject – the object whose elements or nodes should be processed.
It can be a
mesh, submesh, group or filter
.  StepVector – vector or
SMESH.DirStruct
or 3 vector components, defining the direction and value of extrusion for one step (the total extrusion length will be NbOfSteps * StepVector)  NbOfSteps – the number of steps
 MakeGroups – forces the generation of new groups from existing ones
 IsNodes – is True if elements to extrude are nodes
Returns: list of created
groups
if MakeGroups == True, empty list otherwiseExample: Extrusion
 theObject – the object whose elements or nodes should be processed.
It can be a

ExtrusionSweepObject1D
(theObject, StepVector, NbOfSteps, MakeGroups=False)¶ Generate new elements by extrusion of edges which belong to the object
Parameters:  theObject – object whose 1D elements should be processed.
It can be a
mesh, submesh, group or filter
.  StepVector – vector or
SMESH.DirStruct
or 3 vector components, defining the direction and value of extrusion for one step (the total extrusion length will be NbOfSteps * StepVector)  NbOfSteps – the number of steps
 MakeGroups – to generate new groups from existing ones
Returns: list of created
groups
if MakeGroups == True, empty list otherwiseExample: Extrusion
 theObject – object whose 1D elements should be processed.
It can be a

ExtrusionSweepObject2D
(theObject, StepVector, NbOfSteps, MakeGroups=False)¶ Generate new elements by extrusion of faces which belong to the object
Parameters:  theObject – object whose 2D elements should be processed.
It can be a
mesh, submesh, group or filter
.  StepVector – vector or
SMESH.DirStruct
or 3 vector components, defining the direction and value of extrusion for one step (the total extrusion length will be NbOfSteps * StepVector)  NbOfSteps – the number of steps
 MakeGroups – forces the generation of new groups from existing ones
Returns: list of created
groups
if MakeGroups == True, empty list otherwiseExample: Extrusion
 theObject – object whose 2D elements should be processed.
It can be a

ExtrusionSweepObjects
(nodes, edges, faces, StepVector, NbOfSteps, MakeGroups=False, scaleFactors=[], linearVariation=False, basePoint=[], angles=[], anglesVariation=False)¶ Generate new elements by extrusion of the given elements and nodes
Parameters:  nodes – nodes to extrude: a list including ids,
a mesh, submeshes, groups or filters
 edges – edges to extrude: a list including ids,
a mesh, submeshes, groups or filters
 faces – faces to extrude: a list including ids,
a mesh, submeshes, groups or filters
 StepVector – vector or
SMESH.DirStruct
or 3 vector components, defining the direction and value of extrusion for one step (the total extrusion length will be NbOfSteps * StepVector)  NbOfSteps – the number of steps
 MakeGroups – forces the generation of new groups from existing ones
 scaleFactors – optional scale factors to apply during extrusion
 linearVariation – if True, scaleFactors are spread over all NbOfSteps, else scaleFactors [i] is applied to nodes at the ith extrusion step
 basePoint –
optional scaling and rotation center; if not provided, a gravity center of nodes and elements being extruded is used as the scaling center. It can be either
 a list of tree components of the point or
 a node ID or
 a GEOM point
 angles – list of angles in radians. Nodes at each extrusion step are rotated around basePoint, additionally to previous steps.
 anglesVariation – forces the computation of rotation angles as linear variation of the given angles along path steps
Returns: the list of created
groups
if MakeGroups == True, empty list otherwiseExample: Extrusion
 nodes – nodes to extrude: a list including ids,

FaceGroupsSeparatedByEdges
(sharpAngle, createEdges=False, useExistingEdges=False)¶ Distribute all faces of the mesh among groups using sharp edges and optionally existing 1D elements as group boundaries.
Parameters:  sharpAngle – edge is considered sharp if an angle between normals of adjacent faces is more than sharpAngle in degrees.
 createEdges (boolean) – to create 1D elements for detected sharp edges.
 useExistingEdges (boolean) – to use existing edges as group boundaries
Returns: ListOfGroups  the created
groups

FillHole
(holeNodes, groupName='')¶ Fill with 2D elements a hole defined by a SMESH.FreeBorder.
Parameters:  holeNodes – either a SMESH.FreeBorder or a list on node IDs. These nodes
must describe all sequential nodes of the hole border. The first and the last
nodes must be the same. Use
FindFreeBorders()
to get nodes of holes.  groupName (string) – name of a group to add new faces
Returns: a
group
containing the new faces; orNone
if groupName == “” holeNodes – either a SMESH.FreeBorder or a list on node IDs. These nodes
must describe all sequential nodes of the hole border. The first and the last
nodes must be the same. Use

FindCoincidentFreeBorders
(tolerance=0.0)¶ Return groups of FreeBorder’s coincident within the given tolerance.
Parameters: tolerance – the tolerance. If the tolerance <= 0.0 then one tenth of an average size of elements adjacent to free borders being compared is used. Returns: SMESH.CoincidentFreeBorders structure

FindCoincidentNodes
(Tolerance, SeparateCornerAndMediumNodes=False)¶ Find groups of adjacent nodes within Tolerance.
Parameters:  Tolerance (float) – the value of tolerance
 SeparateCornerAndMediumNodes (boolean) – if True, in quadratic mesh puts corner and medium nodes in separate groups thus preventing their further merge.
Returns: the list of groups of nodes IDs (e.g. [[1,12,13],[4,25]])

FindCoincidentNodesOnPart
(SubMeshOrGroup, Tolerance, exceptNodes=[], SeparateCornerAndMediumNodes=False)¶ Find groups of adjacent nodes within Tolerance.
Parameters:  Tolerance – the value of tolerance
 SubMeshOrGroup – list of
submeshes, groups or filters
or of node IDs  exceptNodes – list of either SubMeshes, Groups or node IDs to exclude from search
 SeparateCornerAndMediumNodes – if True, in quadratic mesh puts corner and medium nodes in separate groups thus preventing their further merge.
Returns: the list of groups of nodes IDs (e.g. [[1,12,13],[4,25]])

FindElementByNodes
(nodes)¶ Return an element based on all given nodes.

FindElementsByPoint
(x, y, z, elementType=ALL, meshPart=None)¶ Find the elements where a point lays IN or ON
Parameters:  x,y,z (float) – coordinates of the point
 elementType (SMESH.ElementType) – type of elements to find; SMESH.ALL type means elements of any type excluding nodes, discrete and 0D elements.
 meshPart – a part of mesh (
submesh, group or filter
) to search within
Returns: list of IDs of found elements

FindEqualElements
(MeshOrSubMeshOrGroup=None, exceptElements=[])¶ Find the elements built on the same nodes.
Parameters:  MeshOrSubMeshOrGroup –
mesh, submeshes, groups or filters
or element IDs to check for equal elements  exceptElements – list of either SubMeshes, Groups or elements IDs to exclude from search
Returns: the list of groups of equal elements IDs (e.g. [[1,12,13],[4,25]])
 MeshOrSubMeshOrGroup –

FindFreeBorders
(ClosedOnly=True)¶ Returns all or only closed free borders
Returns: list of SMESH.FreeBorder’s

FindNodeClosestTo
(x, y, z)¶ Find the node closest to a point
Parameters:  x – the X coordinate of a point
 y – the Y coordinate of a point
 z – the Z coordinate of a point
Returns: the ID of a node

FindSharpEdges
(angle, addExisting=False)¶ Return sharp edges of faces and nonmanifold ones. Optionally add existing edges.
Parameters:  angle – angle (in degrees) between normals of adjacent faces to detect sharp edges
 addExisting – to return existing edges (1D elements) as well
Returns: list of FaceEdge structures

FunctorValue
(funcType, elemId, isElem=True)¶ Return value of a functor for a given element
Parameters:  funcType – an item of
SMESH.FunctorType
enum.  elemId – element or node ID
 isElem – elemId is ID of element or node
Returns: the functor value or zero in case of invalid arguments
 funcType – an item of

Get1DBranches
(edges, startNode=0)¶ Partition given 1D elements into groups of contiguous edges. A node where number of meeting edges != 2 is a group end. An optional startNode is used to orient groups it belongs to.
Returns: A list of edge groups and a list of corresponding node groups, where the group is a list of IDs of edges or nodes, like follows [[[branch_edges_1],[branch_edges_2]], [[branch_nodes_1],[branch_nodes_2]]]. If a group is closed, the first and last nodes of the group are same.

GetAlgoState
(theSubObject)¶ Return errors of hypotheses definition. The list of errors is empty if everything is OK.
Parameters: theSubObject – a subshape of a mesh shape Returns: a list of errors

GetAngle
(node1, node2, node3)¶ Computes a radian measure of an angle defined by 3 nodes: <(node1,node2,node3)
Parameters: node1,node2,node3 – IDs of the three nodes Returns: Angle in radians [0,PI]. 1 if failure case.

GetArea
(elemId=None)¶ Get area of given 2D elements or of all 2D mesh elements
Parameters: elemId – either a mesh element ID or a list of IDs or submesh, group or filter
. By default sum area of all 2D elements will be calculated.Returns: Area of given element’s if elemId is specified or sum of all 2D mesh elements’ areas otherwise

GetAspectRatio
(elemId)¶ Get aspect ratio of 2D or 3D element.
Parameters: elemId – mesh element ID Returns: element’s aspect ratio value

GetAutoColor
()¶ Get flag of object auto color mode.
Returns: True or False

GetBallDiameter
(id)¶ Return diameter of a ball discrete element or zero in case of an invalid id

GetBoundingBox
(objects=None, isElem=False)¶ Get
SMESH.Measure
structure specifying bounding box data of the specified object(s)Parameters:  objects – single
source object
or list of source objects or list of nodes/elements IDs  isElem – if objects is a list of IDs, True means that objects are elements, False means that objects are nodes
Returns: SMESH.Measure
structureSee also
 objects – single

GetComputeErrors
(shape=0)¶ Return a list of error messages (
SMESH.ComputeError
) of the lastCompute()

GetElemFaceNodes
(elemId, faceIndex)¶ Return nodes of given face (counted from zero) for given volumic element.

GetElemNbNodes
(id)¶ Return the number of nodes of the given element
Returns: an integer value > 0 or 1 if there is no element for the given ID

GetElemNode
(id, index)¶ Return the node ID the given (zero based) index for the given element.
 If there is no element for the given ID  return 1.
 If there is no node for the given index  return 2.
Parameters:  id (int) – element ID
 index (int) – node index within the element
Returns: an integer value (ID)
See also

GetElemNodes
(id)¶ Return the IDs of nodes of the given element
Returns: a list of integer values

GetElementGeomType
(id)¶ Return the geometric type of mesh element
Returns: the value from SMESH.EntityType
enumeration.

GetElementPosition
(ElemID)¶ Return the position of an element on the shape
Returns: SMESH.ElementPosition

GetElementShape
(id)¶ Return the shape type of mesh element
Returns: the value from SMESH.GeometryType
enumeration.

GetElementType
(id, iselem=True)¶ Return the type of mesh element or node
Returns: the value from SMESH.ElementType
enumeration. Return SMESH.ALL if element or node with the given ID does not exist

GetElementsByNodes
(nodes, elemType=ALL)¶ Return elements including all given nodes.

GetElementsByType
(elementType)¶ Return the list of IDs of mesh elements with the given type
Parameters: elementType (SMESH.ElementType) – the required type of elements Returns: list of integer values

GetElementsId
()¶ Return the list of all mesh elements IDs
Returns: the list of integer values See also

GetEngine
()¶ Return a smeshBuilder instance created this mesh

GetFaceNormal
(faceId, normalized=False)¶ Return three components of normal of given mesh face (or an empty array in KO case)

GetFailedShapes
(publish=False)¶ Return a list of subshapes meshing of which failed, grouped into GEOM groups by error of an algorithm
Parameters: publish – if True, the returned groups will be published in the study Returns: a list of GEOM groups each named after a failed algorithm

GetFreeBorders
()¶ Verify whether a 2D mesh element has free edges (edges connected to one face only). Return a list of special structures (borders).
Returns: a list of SMESH.FreeEdges.Border

GetFunctor
(funcType)¶ Return a cached numerical functor by its type.
Parameters: funcType – functor type: an item of SMESH.FunctorType
enumeration. Note that not all items correspond to numerical functors.Returns: SMESH.NumericalFunctor
. The functor is already initialized with a mesh

GetGeomEngine
()¶ Return a geomBuilder instance

GetGeometryByMeshElement
(theElementID, theGeomName)¶ Return a geometrical object on which the given element was built. The returned geometrical object, if not nil, is either found in the study or published by this method with the given name
Parameters:  theElementID – the id of the mesh element
 theGeomName – the userdefined name of the geometrical object
Returns: GEOM.GEOM_Object instance

GetGroupByName
(name, elemType=None)¶ Find groups by name and type
Parameters:  name (string) – name of the group of interest
 elemType (SMESH.ElementType) – type of elements the groups contain; by default one group of any type is returned; if elemType == SMESH.ALL then all groups of any type are returned
Returns: a list of
SMESH.SMESH_GroupBase

GetGroupNames
()¶ Get the list of names of groups existing in the mesh
Returns: list of strings

GetGroups
(elemType=ALL)¶ Get the list of groups existing in the mesh in the order of creation (starting from the oldest one)
Parameters: elemType (SMESH.ElementType) – type of elements the groups contain; by default groups of elements of all types are returned Returns: a list of SMESH.SMESH_GroupBase

GetHypothesisList
(geom)¶ Get the list of hypotheses added on a geometry
Parameters: geom (GEOM.GEOM_Object) – a subshape of mesh geometry Returns: the sequence of SMESH.SMESH_Hypothesis

GetIDSource
(ids, elemType=ALL)¶ Wrap a list of IDs of elements or nodes into
SMESH.SMESH_IDSource
which can be passed as argument to a method acceptingmesh, submesh, group or filter
Parameters:  ids – list of IDs
 elemType – type of elements; this parameter is used to distinguish IDs of nodes from IDs of elements; by default ids are treated as IDs of elements; use SMESH.NODE if ids are IDs of nodes.
Returns: an instance of
SMESH.SMESH_IDSource
Warning
call UnRegister() for the returned object as soon as it is no more useful:
idSrc = mesh.GetIDSource( [1,3,5], SMESH.NODE ) mesh.DoSomething( idSrc ) idSrc.UnRegister()

GetId
()¶ Get the internal ID
Returns: integer value, which is the internal Id of the mesh

GetIdsFromFilter
(filter, meshParts=[])¶ Pass mesh elements through the given filter and return IDs of fitting elements
Parameters:  filter –
SMESH.Filter
 meshParts – list of mesh parts (
submesh, group or filter
) to filter
Returns: a list of ids
See also
SMESH.Filter.GetIDs()
SMESH.Filter.GetElementsIdFromParts()
 filter –

GetLastCreatedElems
()¶ If during the last operation of
SMESH.SMESH_MeshEditor
some elements were created this method return the list of their IDs. If new elements were not created  return empty listReturns: the list of integer values (can be empty)

GetLastCreatedNodes
()¶ If during the last operation of
SMESH.SMESH_MeshEditor
some nodes were created, this method return the list of their IDs. If new nodes were not created  return empty listReturns: the list of integer values (can be empty)

GetLength
(elemId=None)¶ Get length of given 1D elements or of all 1D mesh elements
Parameters: elemId – either a mesh element ID or a list of IDs or submesh, group or filter
. By default sum length of all 1D elements will be calculated.Returns: Sum of lengths of given elements

GetLog
(clearAfterGet)¶ Return the log of nodes and elements added or removed since the previous clear of the log.
Parameters: clearAfterGet – log is emptied after Get (safe if concurrents access) Returns: list of SMESH.log_block structures { commandType, number, coords, indexes }

GetMaxElementLength
(elemId)¶ Get maximum element length.
Parameters: elemId – mesh element ID Returns: element’s maximum length value

GetMesh
()¶ Return the mesh, that is an encapsulated instance of
SMESH.SMESH_Mesh
interfaceReturns: a SMESH.SMESH_Mesh
object

GetMeshEditor
()¶ Obtain the mesh editor tool
Returns: an instance of SMESH.SMESH_MeshEditor

GetMeshInfo
(obj=None)¶ Get the mesh statistic.
Returns: dictionary { SMESH.EntityType
 “count of elements” }

GetMeshOrder
()¶ Return submesh objects list in meshing order
Returns: list of lists of submeshes

GetMinDistance
(id1, id2=0, isElem1=False, isElem2=False)¶ Get
SMESH.Measure
structure specifying minimum distance data between two objectsParameters:  id1 – first node/element id
 id2 – second node/element id (if 0, distance from id1 to the origin is computed)
 isElem1 – True if id1 is element id, False if it is node id
 isElem2 – True if id2 is element id, False if it is node id
Returns: SMESH.Measure
structureSee also

GetMinMax
(funType, meshPart=None)¶ Return minimal and maximal value of a given functor.
Parameters:  funType (SMESH.FunctorType) – a functor type.
Note that not all items of
SMESH.FunctorType
corresponds to numerical functors.  meshPart – a part of mesh (
submesh, group or filter
) to treat
Returns: tuple (min,max)
 funType (SMESH.FunctorType) – a functor type.
Note that not all items of

GetMinimumAngle
(elemId)¶ Get minimum angle of 2D element.
Parameters: elemId – mesh element ID Returns: element’s minimum angle value

GetName
()¶ Get the name of the mesh
Returns: the name of the mesh as a string

GetNodeInverseElements
(id, elemType=ALL)¶ Return list of IDs of inverse elements for the given node. If there is no node for the given ID  return an empty list
Parameters:  id – node ID
 elementType –
type of elements
(SMESH.EDGE, SMESH.FACE, SMESH.VOLUME, etc.)
Returns: list of integer values

GetNodePosition
(NodeID)¶ Return the position of a node on the shape
Returns: SMESH.NodePosition

GetNodeXYZ
(id)¶ Get XYZ coordinates of a node. If there is no node for the given ID  return an empty list
Returns: list of float values

GetNodesId
()¶ Return the list of mesh nodes IDs
Returns: the list of integer values

GetPointState
(x, y, z)¶ Return point state in a closed 2D mesh in terms of TopAbs_State enumeration: smesh.TopAbs_IN, smesh.TopAbs_OUT, smesh.TopAbs_ON and smesh.TopAbs_UNKNOWN. UNKNOWN state means that either mesh is wrong or the analysis fails.

GetShape
()¶ Return the shape associated to the mesh
Returns: a GEOM_Object

GetShapeID
(id)¶ Return the ID of the shape, on which the given node was generated.
Returns: an integer value > 0 or 1 if there is no node for the given ID or the node is not assigned to any geometry

GetShapeIDForElem
(id)¶ Return the ID of the shape, on which the given element was generated.
Returns: an integer value > 0 or 1 if there is no element for the given ID or the element is not assigned to any geometry

GetSkew
(elemId)¶ Get skew of 2D element.
Parameters: elemId – mesh element ID Returns: element’s skew value

GetSubMesh
(geom, name)¶ Get a submesh object associated to a geom geometrical object.
Parameters:  geom – a geometrical object (shape)
 name – a name for the submesh in the Object Browser
Returns: an object of type
SMESH.SMESH_subMesh
, representing a part of mesh, which lies on the given shapeNote
A submesh is implicitly created when a subshape is specified at creating an algorithm, for example:
algo1D = mesh.Segment(geom=Edge_1)
create a submesh on Edge_1 and assign Wire Discretization algorithm to it. The created submesh can be retrieved from the algorithm:
submesh = algo1D.GetSubMesh()

GetSubMeshElementType
(Shape)¶ Return type of elements on given shape
Parameters: Shape – a geom object (subshape). Shape must be a subshape of a ShapeToMesh() Returns: SMESH.ElementType

GetSubMeshElementsId
(Shape)¶ Return the list of submesh elements IDs
Parameters: Shape (GEOM.GEOM_Object) – a geom object (subshape). Shape must be the subshape of the main shape
Returns: list of integer values

GetSubMeshNodesId
(Shape, all)¶ Return the list of submesh nodes IDs
Parameters:  Shape – a geom object (subshape).
Shape must be the subshape of a
GetShape()
 all – If True, gives all nodes of submesh elements, otherwise gives only submesh nodes
Returns: list of integer values
 Shape – a geom object (subshape).
Shape must be the subshape of a

GetSubShapeName
(subShapeID)¶ Return a name of a subshape by its ID. Possible variants (for subShapeID == 3):
 “Face_12”  published subshape
 FACE #3  not published subshape
 subshape #3  invalid subshape ID
 #3  error in this function
Parameters: subShapeID – a unique ID of a subshape Returns: a string describing the subshape

GetTaper
(elemId)¶ Get taper of 2D element.
Parameters: elemId – mesh element ID Returns: element’s taper value

GetVolume
(elemId=None)¶ Get volume of given 3D elements or of all 3D mesh elements
Parameters: elemId – either a mesh element ID or a list of IDs or submesh, group or filter
. By default sum volume of all 3D elements will be calculated.Returns: Sum element’s volume value if elemId is specified or sum of all 3D mesh elements’ volumes otherwise

GetWarping
(elemId)¶ Get warping angle of 2D element.
Parameters: elemId – mesh element ID Returns: element’s warping angle value

Group
(grp, name='')¶ Create a mesh group based on the geometric object grp and give it a name. If name is not defined the name of the geometric group is used
Note
Works like
GroupOnGeom()
.Parameters:  grp – a geometric group, a vertex, an edge, a face or a solid
 name – the name of the mesh group
Returns:

GroupOnFilter
(typ, name, filter)¶ Create a mesh group with given name based on the filter. It is a special type of group dynamically updating it’s contents during mesh modification
Parameters:  typ – the type of elements in the group; either of (SMESH.NODE, SMESH.EDGE, SMESH.FACE, SMESH.VOLUME).
 name – the name of the mesh group
 filter (SMESH.Filter) – the filter defining group contents
Returns:

GroupOnGeom
(grp, name='', typ=None)¶ Create a mesh group based on the geometrical object grp and give it a name. if name is not defined the name of the geometric group is used
Parameters:  grp – a geometrical group, a vertex, an edge, a face or a solid
 name – the name of the mesh group
 typ – the type of elements in the group; either of (SMESH.NODE, SMESH.EDGE, SMESH.FACE, SMESH.VOLUME). If not set, it is automatically detected by the type of the geometry
Returns:

HasDuplicatedGroupNamesMED
()¶ Check the group names for duplications. Consider the maximum group name length stored in MED file.
Returns: True or False

HasShapeToMesh
()¶ Return
True
if this mesh is based on geometry

Hexahedron
(geom_shape=0)¶ Create hexahedron 3D algorithm for volumes
This method is dynamically added to
Mesh
class by the meshing plugin(s).If the optional geom_shape parameter is not set, this algorithm is global (applied to whole mesh). Otherwise, this algorithm defines a submesh based on geom_shape subshape.
Parameters:  algo_type – type of algorithm to be created; allowed values are specified by classes implemented by plugin
 geom_shape (GEOM_Object) – if defined, the subshape to be meshed
Returns: An instance of Mesh_Algorithm subclass according to the specified algo_type, see
StdMeshersBuilder_Hexahedron

IntersectGroups
(group1, group2, name)¶ Prodice an intersection of two groups. A new group is created. All mesh elements that are common for the two initial groups are added to the new one.
Parameters:  group1 (SMESH.SMESH_GroupBase) – a group
 group2 (SMESH.SMESH_GroupBase) – another group
Returns: instance of
SMESH.SMESH_Group

IntersectListOfGroups
(groups, name)¶ Produce an intersection of groups. New group is created. All mesh elements that are present in all initial groups simultaneously are added to the new one
Parameters: groups – a list of SMESH.SMESH_GroupBase
Returns: instance of SMESH.SMESH_Group

InverseDiag
(NodeID1, NodeID2)¶ Replace two neighbour triangles sharing Node1Node2 link with the triangles built on the same 4 nodes but having other common link.
Parameters:  NodeID1 – the ID of the first node
 NodeID2 – the ID of the second node
Returns: False if proper faces were not found

IsCoherentOrientation2D
()¶ Check if orientation of 2D elements is coherent

IsManifold
()¶ Check if a 2D mesh is manifold

IsMediumNode
(elementID, nodeID)¶ Return true if the given node is the medium node in the given quadratic element

IsMediumNodeOfAnyElem
(nodeID, elementType=ALL)¶ Return true if the given node is the medium node in one of quadratic elements
Parameters:  nodeID – ID of the node
 elementType – the type of elements to check a state of the node, either of (SMESH.ALL, SMESH.NODE, SMESH.EDGE, SMESH.FACE or SMESH.VOLUME)

IsPoly
(id)¶ Return true if the given element is a polygon

IsQuadratic
(id)¶ Return true if the given element is quadratic

IsReadyToCompute
(theSubObject)¶ Return true if the hypotheses are defined well
Parameters: theSubObject – a subshape of a mesh shape Returns: True or False

IsUsedHypothesis
(hyp, geom)¶ Return True if an algorithm or hypothesis is assigned to a given shape
Parameters:  hyp – an algorithm or hypothesis to check
 geom – a subhape of mesh geometry
Returns: True of False

Load
()¶ Load mesh from the study after opening the study

Make2DMeshFrom3D
()¶ Create 2D mesh as skin on boundary faces of a 3D mesh
Returns: True if operation has been completed successfully, False otherwise

MakeBoundaryElements
(dimension=BND_2DFROM3D, groupName='', meshName='', toCopyAll=False, groups=[])¶ Create missing boundary elements around either the whole mesh or groups of elements
Parameters:  dimension – defines type of boundary elements to create, either of { SMESH.BND_2DFROM3D, SMESH.BND_1DFROM3D, SMESH.BND_1DFROM2D }
 groupName – a name of group to store all boundary elements in, “” means not to create the group
 meshName – a name of a new mesh, which is a copy of the initial mesh + created boundary elements; “” means not to create the new mesh
 toCopyAll – if True, the whole initial mesh will be copied into the new mesh else only boundary elements will be copied into the new mesh
 groups – list of
submeshes, groups or filters
of elements to make boundary around
Returns:

MakeBoundaryMesh
(elements, dimension=BND_2DFROM3D, groupName='', meshName='', toCopyElements=False, toCopyExistingBondary=False)¶ Create missing boundary elements
Parameters:  elements – elements whose boundary is to be checked:
mesh, submesh, group, filter
or list of elements. If elements is mesh, it must be the mesh whose MakeBoundaryMesh() is called  dimension – defines type of boundary elements to create, either of { SMESH.BND_2DFROM3D, SMESH.BND_1DFROM3D, SMESH.BND_1DFROM2D }. SMESH.BND_1DFROM3D create mesh edges on all borders of free facets of 3D cells
 groupName – a name of group to store created boundary elements in, “” means not to create the group
 meshName – a name of new mesh to store created boundary elements in, “” means not to create the new mesh
 toCopyElements – if True, the checked elements will be copied into the new mesh else only boundary elements will be copied into the new mesh
 toCopyExistingBondary – if True, not only new but also preexisting boundary elements will be copied into the new mesh
Returns:  elements – elements whose boundary is to be checked:

MakeGroup
(groupName, elementType, CritType=FT_Undefined, Compare=FT_EqualTo, Threshold='', UnaryOp=FT_Undefined, Tolerance=1e07)¶ Create a mesh group by the given conditions
Parameters:  groupName – the name of the mesh group
 elementType (SMESH.ElementType) – the type of elements (SMESH.NODE, SMESH.EDGE, SMESH.FACE, SMESH.VOLUME)
 CritType (SMESH.FunctorType) – the type of criterion (SMESH.FT_Taper, SMESH.FT_Area, etc.). Note that the items starting from FT_LessThan are not suitable for CritType.
 Compare (SMESH.FunctorType) – belongs to {SMESH.FT_LessThan, SMESH.FT_MoreThan, SMESH.FT_EqualTo}
 Threshold – the threshold value (range of ids as string, shape, numeric, depending on CritType)
 UnaryOp (SMESH.FunctorType) – SMESH.FT_LogicalNOT or SMESH.FT_Undefined
 Tolerance (float) – the tolerance used by SMESH.FT_BelongToGeom, SMESH.FT_BelongToSurface, SMESH.FT_LyingOnGeom, SMESH.FT_CoplanarFaces criteria
Returns:

MakeGroupByCriteria
(groupName, theCriteria, binOp=FT_LogicalAND)¶ Create a mesh group by the given criteria (list of
SMESH.Filter.Criterion
)Parameters:  groupName – the name of the mesh group
 theCriteria – the list of
SMESH.Filter.Criterion
 binOp – binary operator (SMESH.FT_LogicalAND or SMESH.FT_LogicalOR ) used when binary operator of criteria is undefined
Returns: See also

MakeGroupByCriterion
(groupName, Criterion)¶ Create a mesh group by the given criterion
Parameters:  groupName – the name of the mesh group
 Criterion – the instance of
SMESH.Filter.Criterion
class
Returns: See also

MakeGroupByFilter
(groupName, theFilter)¶ Create a mesh group by the given filter
Parameters:  groupName (string) – the name of the mesh group
 theFilter (SMESH.Filter) – the filter
Returns: See also

MakeGroupByIds
(groupName, elementType, elemIDs)¶ Create a mesh group by the given ids of elements
Parameters:  groupName – the name of the mesh group
 elementType – the type of elements in the group; either of (SMESH.NODE, SMESH.EDGE, SMESH.FACE, SMESH.VOLUME).
 elemIDs – either the list of ids,
mesh, submesh, group or filter
Returns:

MakePolyLine
(segments, groupName='', isPreview=False)¶ Create a polyline consisting of 1D mesh elements each lying on a 2D element of the initial triangle mesh. Positions of new nodes are found by cutting the mesh by the plane passing through pairs of points specified by each
SMESH.PolySegment
structure. If there are several paths connecting a pair of points, the shortest path is selected by the module. Position of the cutting plane is defined by the two points and an optional vector lying on the plane specified by a PolySegment. By default the vector is defined by Mesh module as following. A middle point of the two given points is computed. The middle point is projected to the mesh. The vector goes from the middle point to the projection point. In case of planar mesh, the vector is normal to the mesh.In preview mode, segments [i].vector returns the used vector which goes from the middle point to its projection.
Parameters:  segments – list of
SMESH.PolySegment
defining positions of cutting planes.  groupName – optional name of a group where created mesh segments will be added.
 segments – list of

MakeSlot
(segmentGroup, width)¶ Create a slot of given width around given 1D elements lying on a triangle mesh. The slot is constructed by cutting faces by cylindrical surfaces made around each segment. Segments are expected to be created by MakePolyLine().
Returns: FaceEdge’s located at the slot boundary

MergeElements
(GroupsOfElementsID, ElementsToKeep=[])¶ Merge elements in each given group.
Parameters:  GroupsOfElementsID – a list of groups (lists) of elements IDs for merging (e.g. [[1,12,13],[25,4]] means that elements 12, 13 and 4 will be removed and replaced in all mesh groups by elements 1 and 25)
 ElementsToKeep – elements to keep in the mesh: a list of groups, submeshes or node IDs. If ElementsToKeep does not include an element to keep for some group to merge, then the first element in the group is kept.
Note
This operation can create gaps in numeration of elements. Call
RenumberElements()
to remove the gaps.

MergeEqualElements
()¶ Leave one element and remove all other elements built on the same nodes.
Note
This operation can create gaps in numeration of elements. Call
RenumberElements()
to remove the gaps.

MergeNodes
(GroupsOfNodes, NodesToKeep=[], AvoidMakingHoles=False)¶ Merge nodes
Parameters:  GroupsOfNodes – a list of groups of nodes IDs for merging. E.g. [[1,12,13],[25,4]] means that nodes 12, 13 and 4 will be removed and replaced in all elements and mesh groups by nodes 1 and 25 correspondingly
 NodesToKeep – nodes to keep in the mesh: a list of groups, submeshes or node IDs. If NodesToKeep does not include a node to keep for some group to merge, then the first node in the group is kept.
 AvoidMakingHoles – prevent merging nodes which cause removal of elements becoming invalid
Note
This operation can create gaps in numeration of nodes or elements. Call
RenumberElements()
to remove the gaps.

MeshDimension
()¶ Return the mesh dimension depending on the dimension of the underlying shape or, if the mesh is not based on any shape, basing on deimension of elements
Returns: mesh dimension as an integer value [0,3]

MeshToPassThroughAPoint
(x, y, z)¶ Find the node closest to a point and moves it to a point location
Parameters:  x – the X coordinate of a point
 y – the Y coordinate of a point
 z – the Z coordinate of a point
Returns: the ID of a moved node

MinDistance
(id1, id2=0, isElem1=False, isElem2=False)¶ Get minimum distance between two nodes, elements or distance to the origin
Parameters:  id1 – first node/element id
 id2 – second node/element id (if 0, distance from id1 to the origin is computed)
 isElem1 – True if id1 is element id, False if it is node id
 isElem2 – True if id2 is element id, False if it is node id
Returns: minimum distance value
See also

Mirror
(IDsOfElements, Mirror, theMirrorType=None, Copy=0, MakeGroups=False)¶ Create a symmetrical copy of mesh elements
Parameters:  IDsOfElements – list of elements ids
 Mirror – is
SMESH.AxisStruct
or geom object (point, line, plane)  theMirrorType – smesh.POINT, smesh.AXIS or smesh.PLANE. If the Mirror is a geom object this parameter is unnecessary
 Copy – allows to copy element (Copy is 1) or to replace with its mirroring (Copy is 0)
 MakeGroups – forces the generation of new groups from existing ones (if Copy)
Returns: list of created
groups
if MakeGroups == True, empty list otherwise

MirrorMakeMesh
(IDsOfElements, Mirror, theMirrorType=0, MakeGroups=0, NewMeshName='')¶ Create a new mesh by a symmetrical copy of mesh elements
Parameters:  IDsOfElements – the list of elements ids
 Mirror – is
SMESH.AxisStruct
or geom object (point, line, plane)  theMirrorType – smesh.POINT, smesh.AXIS or smesh.PLANE. If the Mirror is a geom object this parameter is unnecessary
 MakeGroups – to generate new groups from existing ones
 NewMeshName – a name of the new mesh to create
Returns: instance of class
Mesh

MirrorObject
(theObject, Mirror, theMirrorType=None, Copy=0, MakeGroups=False)¶ Create a symmetrical copy of the object
Parameters:  theObject –
mesh, submesh, group or filter
 Mirror –
SMESH.AxisStruct
or geom object (point, line, plane)  theMirrorType – smesh.POINT, smesh.AXIS or smesh.PLANE. If the Mirror is a geom object this parameter is unnecessary
 Copy – allows copying the element (Copy==True) or replacing it with its mirror (Copy==False)
 MakeGroups – forces the generation of new groups from existing ones (if Copy)
Returns: list of created
groups
if MakeGroups == True, empty list otherwise theObject –

MirrorObjectMakeMesh
(theObject, Mirror, theMirrorType=0, MakeGroups=0, NewMeshName='')¶ Create a new mesh by a symmetrical copy of the object
Parameters:  theObject –
mesh, submesh, group or filter
 Mirror –
SMESH.AxisStruct
or geom object (point, line, plane)  theMirrorType – smesh.POINT, smesh.AXIS or smesh.PLANE. If the Mirror is a geom object this parameter is unnecessary
 MakeGroups – forces the generation of new groups from existing ones
 NewMeshName – the name of the new mesh to create
Returns: instance of class
Mesh
 theObject –

MoveClosestNodeToPoint
(x, y, z, NodeID)¶ Find the node closest to a point and moves it to a point location
Parameters:  x – the X coordinate of a point
 y – the Y coordinate of a point
 z – the Z coordinate of a point
 NodeID – if specified (>0), the node with this ID is moved, otherwise, the node closest to point (x, y, z) is moved
Returns: the ID of a moved node

MoveNode
(NodeID, x, y, z)¶ Move the node with the given id
Parameters:  NodeID – the id of the node
 x – a new X coordinate
 y – a new Y coordinate
 z – a new Z coordinate
Returns: True if succeed else False

Nb0DElements
()¶ Return the number of 0d elements in the mesh
Returns: an integer value

NbBalls
()¶ Return the number of ball discrete elements in the mesh
Returns: an integer value

NbBiQuadQuadrangles
()¶ Return the number of biquadratic quadrangles in the mesh
Returns: an integer value

NbBiQuadTriangles
()¶ Return the number of biquadratic triangles in the mesh
Returns: an integer value

NbEdges
()¶ Return the number of edges in the mesh
Returns: an integer value

NbEdgesOfOrder
(elementOrder)¶ Return the number of edges with the given order in the mesh
Parameters: elementOrder – the order of elements (SMESH.ORDER_ANY, SMESH.ORDER_LINEAR or SMESH.ORDER_QUADRATIC) Returns: an integer value

NbElements
()¶ Return the number of elements in the mesh
Returns: an integer value

NbFaces
()¶ Return the number of faces in the mesh
Returns: an integer value

NbFacesOfOrder
(elementOrder)¶ Return the number of faces with the given order in the mesh
Parameters: elementOrder – the order of elements (SMESH.ORDER_ANY, SMESH.ORDER_LINEAR or SMESH.ORDER_QUADRATIC) Returns: an integer value

NbGroups
()¶ Get the number of groups existing in the mesh
Returns: the quantity of groups as an integer value

NbHexagonalPrisms
()¶ Return the number of hexagonal prisms in the mesh
Returns: an integer value

NbHexas
()¶ Return the number of hexahedrons in the mesh
Returns: an integer value

NbHexasOfOrder
(elementOrder)¶ Return the number of hexahedrons with the given order in the mesh
Parameters: elementOrder – the order of elements (SMESH.ORDER_ANY, SMESH.ORDER_LINEAR or SMESH.ORDER_QUADRATIC) Returns: an integer value

NbNodes
()¶ Return the number of nodes in the mesh
Returns: an integer value

NbPolygons
(elementOrder=ORDER_ANY)¶ Return the number of polygons of given order in the mesh
Parameters: elementOrder – the order of elements (SMESH.ORDER_ANY, SMESH.ORDER_LINEAR or SMESH.ORDER_QUADRATIC) Returns: an integer value

NbPolyhedrons
()¶ Return the number of polyhedrons in the mesh
Returns: an integer value

NbPrisms
()¶ Return the number of prisms in the mesh
Returns: an integer value

NbPrismsOfOrder
(elementOrder)¶ Return the number of prisms with the given order in the mesh
Parameters: elementOrder – the order of elements (SMESH.ORDER_ANY, SMESH.ORDER_LINEAR or SMESH.ORDER_QUADRATIC) Returns: an integer value

NbPyramids
()¶ Return the number of pyramids in the mesh
Returns: an integer value

NbPyramidsOfOrder
(elementOrder)¶ Return the number of pyramids with the given order in the mesh
Parameters: elementOrder – the order of elements (SMESH.ORDER_ANY, SMESH.ORDER_LINEAR or SMESH.ORDER_QUADRATIC) Returns: an integer value

NbQuadrangles
()¶ Return the number of quadrangles in the mesh
Returns: an integer value

NbQuadranglesOfOrder
(elementOrder)¶ Return the number of quadrangles with the given order in the mesh
Parameters: elementOrder – the order of elements (SMESH.ORDER_ANY, SMESH.ORDER_LINEAR or SMESH.ORDER_QUADRATIC) Returns: an integer value

NbSubMesh
()¶ Return the number of submeshes in the mesh
Returns: an integer value

NbTetras
()¶ Return the number of tetrahedrons in the mesh
Returns: an integer value

NbTetrasOfOrder
(elementOrder)¶ Return the number of tetrahedrons with the given order in the mesh
Parameters: elementOrder – the order of elements (SMESH.ORDER_ANY, SMESH.ORDER_LINEAR or SMESH.ORDER_QUADRATIC) Returns: an integer value

NbTriQuadraticHexas
()¶ Return the number of triquadratic hexahedrons in the mesh
Returns: an integer value

NbTriangles
()¶ Return the number of triangles in the mesh
Returns: an integer value

NbTrianglesOfOrder
(elementOrder)¶ Return the number of triangles with the given order in the mesh
Parameters: elementOrder – is the order of elements (SMESH.ORDER_ANY, SMESH.ORDER_LINEAR or SMESH.ORDER_QUADRATIC) Returns: an integer value

NbVolumes
()¶ Return the number of volumes in the mesh
Returns: an integer value

NbVolumesOfOrder
(elementOrder)¶ Return the number of volumes with the given order in the mesh
Parameters: elementOrder – the order of elements (SMESH.ORDER_ANY, SMESH.ORDER_LINEAR or SMESH.ORDER_QUADRATIC) Returns: an integer value

Offset
(theObject, Value, MakeGroups=False, CopyElements=False, NewMeshName='')¶ Create an offset mesh from the given 2D object
Parameters:  theObject (SMESH.SMESH_IDSource) – the source object (mesh, submesh, group or filter)
 theValue (float) – signed offset size
 MakeGroups (boolean) – forces the generation of new groups from existing ones
 CopyElements (boolean) – if NewMeshName is empty, True means to keep original elements, False means to remove original elements.
 NewMeshName (string) – the name of a mesh to create. If empty, offset elements are added to this mesh
Returns:

Polygon
(geom_shape=0)¶ Create polygon 2D algorithm for faces
This method is dynamically added to
Mesh
class by the meshing plugin(s).If the optional geom_shape parameter is not set, this algorithm is global (applied to whole mesh). Otherwise, this algorithm defines a submesh based on geom_shape subshape.
Parameters:  algo_type – type of algorithm to be created; allowed values are specified by classes implemented by plugin
 geom_shape (GEOM_Object) – if defined, the subshape to be meshed
Returns: An instance of Mesh_Algorithm subclass according to the specified algo_type, see
StdMeshersBuilder_PolygonPerFace

Polyhedron
(geom_shape=0)¶ Create polyhedron 3D algorithm for solids
This method is dynamically added to
Mesh
class by the meshing plugin(s).If the optional geom_shape parameter is not set, this algorithm is global (applied to whole mesh). Otherwise, this algorithm defines a submesh based on geom_shape subshape.
Parameters:  algo_type – type of algorithm to be created; allowed values are specified by classes implemented by plugin
 geom_shape (GEOM_Object) – if defined, the subshape to be meshed
Returns: An instance of Mesh_Algorithm subclass according to the specified algo_type, see
StdMeshersBuilder_PolyhedronPerSolid

Prism
(geom_shape=0)¶ Create prism 3D algorithm for volumes
This method is dynamically added to
Mesh
class by the meshing plugin(s).If the optional geom_shape parameter is not set, this algorithm is global (applied to whole mesh). Otherwise, this algorithm defines a submesh based on geom_shape subshape.
Parameters:  algo_type – type of algorithm to be created; allowed values are specified by classes implemented by plugin
 geom_shape (GEOM_Object) – if defined, the subshape to be meshed
Returns: An instance of Mesh_Algorithm subclass according to the specified algo_type, see
StdMeshersBuilder_Prism3D
,StdMeshersBuilder_RadialPrism3D

ProjectPoint
(x, y, z, elementType, meshObject=None)¶ Project a point to a mesh object. Return ID of an element of given type where the given point is projected and coordinates of the projection point. In the case if nothing found, return 1 and []

Projection1D
(geom_shape=0)¶ Create projection 1D algorithm for edges
This method is dynamically added to
Mesh
class by the meshing plugin(s).If the optional geom_shape parameter is not set, this algorithm is global (applied to whole mesh). Otherwise, this algorithm defines a submesh based on geom_shape subshape.
Parameters:  algo_type – type of algorithm to be created; allowed values are specified by classes implemented by plugin
 geom_shape (GEOM_Object) – if defined, the subshape to be meshed
Returns: An instance of Mesh_Algorithm subclass according to the specified algo_type, see
StdMeshersBuilder_Projection1D

Projection1D2D
(geom_shape=0)¶ Create projection 1D2D algorithm for faces
This method is dynamically added to
Mesh
class by the meshing plugin(s).If the optional geom_shape parameter is not set, this algorithm is global (applied to whole mesh). Otherwise, this algorithm defines a submesh based on geom_shape subshape.
Parameters:  algo_type – type of algorithm to be created; allowed values are specified by classes implemented by plugin
 geom_shape (GEOM_Object) – if defined, the subshape to be meshed
Returns: An instance of Mesh_Algorithm subclass according to the specified algo_type, see
StdMeshersBuilder_Projection1D2D

Projection2D
(geom_shape=0)¶ Create projection 2D algorithm for faces
This method is dynamically added to
Mesh
class by the meshing plugin(s).If the optional geom_shape parameter is not set, this algorithm is global (applied to whole mesh). Otherwise, this algorithm defines a submesh based on geom_shape subshape.
Parameters:  algo_type – type of algorithm to be created; allowed values are specified by classes implemented by plugin
 geom_shape (GEOM_Object) – if defined, the subshape to be meshed
Returns: An instance of Mesh_Algorithm subclass according to the specified algo_type, see
StdMeshersBuilder_Projection2D

Projection3D
(geom_shape=0)¶ Create projection 3D algorithm for volumes
This method is dynamically added to
Mesh
class by the meshing plugin(s).If the optional geom_shape parameter is not set, this algorithm is global (applied to whole mesh). Otherwise, this algorithm defines a submesh based on geom_shape subshape.
Parameters:  algo_type – type of algorithm to be created; allowed values are specified by classes implemented by plugin
 geom_shape (GEOM_Object) – if defined, the subshape to be meshed
Returns: An instance of Mesh_Algorithm subclass according to the specified algo_type, see
StdMeshersBuilder_Projection3D

QuadTo4Tri
(theElements=[])¶ Split each of given quadrangles into 4 triangles. A node is added at the center of a quadrangle.
Parameters: theElements – the faces to be splitted. This can be either mesh, submesh, group, filter
or a list of face IDs. By default all quadrangles are splitNote
This operation can create gaps in numeration of elements. Call
RenumberElements()
to remove the gaps.

QuadToTri
(IDsOfElements, theCriterion=None)¶ Split quadrangles into triangles.
Parameters:  IDsOfElements – the faces to be splitted.
 theCriterion – is a numerical functor, in terms of enum
SMESH.FunctorType
, used to choose a diagonal for splitting. If theCriterion is None, which is a default value, then quadrangles will be split by the smallest diagonal. Note that not all items ofSMESH.FunctorType
corresponds to numerical functors.
Returns: True in case of success, False otherwise.
Note
This operation can create gaps in numeration of elements. Call
RenumberElements()
to remove the gaps.

QuadToTriObject
(theObject, theCriterion=None)¶ Split quadrangles into triangles.
Parameters:  theObject – the object from which the list of elements is taken,
this is
mesh, submesh, group or filter
 theCriterion – is a numerical functor, in terms of enum
SMESH.FunctorType
, used to choose a diagonal for splitting. If theCriterion is None, which is a default value, then quadrangles will be split by the smallest diagonal. Note that not all items ofSMESH.FunctorType
corresponds to numerical functors.
Returns: True in case of success, False otherwise.
Note
This operation can create gaps in numeration of elements. Call
RenumberElements()
to remove the gaps. theObject – the object from which the list of elements is taken,
this is

Quadrangle
(geom_shape=0)¶ Create quadrangle 1D2D algorithm for faces
This method is dynamically added to
Mesh
class by the meshing plugin(s).If the optional geom_shape parameter is not set, this algorithm is global (applied to whole mesh). Otherwise, this algorithm defines a submesh based on geom_shape subshape.
Parameters:  algo_type – type of algorithm to be created; allowed values are specified by classes implemented by plugin
 geom_shape (GEOM_Object) – if defined, the subshape to be meshed
Returns: An instance of Mesh_Algorithm subclass according to the specified algo_type, see
StdMeshersBuilder_QuadMA_1D2D
,StdMeshersBuilder_Quadrangle
,StdMeshersBuilder_RadialQuadrangle1D2D

RemoveElements
(IDsOfElements)¶ Remove the elements from the mesh by ids
Parameters: IDsOfElements – is a list of ids of elements to remove Returns: True or False Note
This operation can create gaps in numeration of elements. Call
RenumberElements()
to remove the gaps.

RemoveGlobalHypotheses
()¶ Remove all global hypotheses

RemoveGroup
(group)¶ Remove a group
Parameters: group (SMESH.SMESH_GroupBase) – group to remove

RemoveGroupWithContents
(group)¶ Remove a group with its contents
Parameters: group (SMESH.SMESH_GroupBase) – group to remove Note
This operation can create gaps in numeration of nodes or elements. Call
RenumberElements()
to remove the gaps.

RemoveHypothesis
(hyp, geom=0)¶ Unassign a hypothesis
Parameters:  hyp (SMESH.SMESH_Hypothesis) – a hypothesis to unassign
 geom (GEOM.GEOM_Object) – a subshape of mesh geometry
Returns:

RemoveNodes
(IDsOfNodes)¶ Remove nodes from mesh by ids
Parameters: IDsOfNodes – is a list of ids of nodes to remove Returns: True or False Note
This operation can create gaps in numeration of nodes. Call
RenumberElements()
to remove the gaps.

RemoveOrphanNodes
()¶ Remove all orphan (free) nodes from mesh
Returns: number of the removed nodes Note
This operation can create gaps in numeration of nodes. Call
RenumberElements()
to remove the gaps.

RenumberElements
()¶ Renumber mesh elements to remove unused element IDs

RenumberNodes
()¶ Renumber mesh nodes to remove unused node IDs

Reorient
(IDsOfElements=None)¶ Reorient elements by ids
Parameters: IDsOfElements – if undefined reorients all mesh elements Returns: True if succeed else False

Reorient2D
(the2DObject, theDirection, theFaceOrPoint)¶ Reorient faces contained in the2DObject.
Parameters:  the2DObject – a
mesh, submesh, group or filter
or list of IDs of 2D elements  theDirection – a desired direction of normal of theFace. It can be either a GEOM vector or a list of coordinates [x,y,z].
 theFaceOrPoint – defines a face of the2DObject whose normal will be compared with theDirection. It can be either ID of face or a point by which the face will be found. The point can be given as either a GEOM vertex or a list of point coordinates.
Returns: number of reoriented faces
 the2DObject – a

Reorient2DBy3D
(the2DObject, the3DObject, theOutsideNormal=True)¶ Reorient faces according to adjacent volumes.
Parameters:  the2DObject – is a
mesh, submesh, group, filter
or list of either IDs of faces or face groups.  the3DObject – is a
mesh, submesh, group, filter
or list of IDs of volumes.  theOutsideNormal – to orient faces to have their normals pointing either outside or inside the adjacent volumes.
Returns: number of reoriented faces.
 the2DObject – is a

ReorientObject
(theObject)¶ Reorient all elements of the object
Parameters: theObject – mesh, submesh, group or filter
Returns: True if succeed else False

Rotate
(IDsOfElements, Axis, AngleInRadians, Copy, MakeGroups=False)¶ Rotate the elements
Parameters:  IDsOfElements – list of elements ids
 Axis – the axis of rotation (
SMESH.AxisStruct
or geom line)  AngleInRadians – the angle of rotation (in radians) or a name of variable which defines angle in degrees
 Copy – allows copying the rotated elements
 MakeGroups – forces the generation of new groups from existing ones (if Copy)
Returns: list of created
groups
if MakeGroups == True, empty list otherwise

RotateMakeMesh
(IDsOfElements, Axis, AngleInRadians, MakeGroups=0, NewMeshName='')¶ Create a new mesh of rotated elements
Parameters:  IDsOfElements – list of element ids
 Axis – the axis of rotation (
SMESH.AxisStruct
or geom line)  AngleInRadians – the angle of rotation (in radians) or a name of variable which defines angle in degrees
 MakeGroups – forces the generation of new groups from existing ones
 NewMeshName – the name of the newly created mesh
Returns: instance of class
Mesh

RotateObject
(theObject, Axis, AngleInRadians, Copy, MakeGroups=False)¶ Rotate the object
Parameters:  theObject – the object to rotate (
mesh, submesh, group or filter
)  Axis – the axis of rotation (
SMESH.AxisStruct
or geom line)  AngleInRadians – the angle of rotation (in radians) or a name of variable which defines angle in degrees
 Copy – allows copying the rotated elements
 MakeGroups – forces the generation of new groups from existing ones (if Copy)
Returns: list of created
groups
if MakeGroups==True, empty list otherwise theObject – the object to rotate (

RotateObjectMakeMesh
(theObject, Axis, AngleInRadians, MakeGroups=0, NewMeshName='')¶ Create a new mesh from the rotated object
Parameters:  theObject – the object to rotate (
mesh, submesh, group or filter
)  Axis – the axis of rotation (
SMESH.AxisStruct
or geom line)  AngleInRadians – the angle of rotation (in radians) or a name of variable which defines angle in degrees
 MakeGroups – forces the generation of new groups from existing ones
 NewMeshName – the name of the newly created mesh
Returns: instance of class
Mesh
 theObject – the object to rotate (

RotationSweep
(IDsOfElements, Axis, AngleInRadians, NbOfSteps, Tolerance, MakeGroups=False, TotalAngle=False)¶ Generate new elements by rotation of the elements around the axis
Parameters:  IDsOfElements – the list of ids of elements to sweep
 Axis – the axis of rotation,
SMESH.AxisStruct
or line(geom object)  AngleInRadians – the angle of Rotation (in radians) or a name of variable which defines angle in degrees
 NbOfSteps – the number of steps
 Tolerance – tolerance
 MakeGroups – forces the generation of new groups from existing ones
 TotalAngle – gives meaning of AngleInRadians: if True then it is an angular size of all steps, else  size of each step
Returns: the list of created
groups
if MakeGroups == True, empty list otherwise

RotationSweepObject
(theObject, Axis, AngleInRadians, NbOfSteps, Tolerance, MakeGroups=False, TotalAngle=False)¶ Generate new elements by rotation of the elements of object around the axis theObject object which elements should be sweeped. It can be a mesh, a sub mesh or a group.
Parameters:  Axis – the axis of rotation,
SMESH.AxisStruct
or line(geom object)  AngleInRadians – the angle of Rotation
 NbOfSteps – number of steps
 Tolerance – tolerance
 MakeGroups – forces the generation of new groups from existing ones
 TotalAngle – gives meaning of AngleInRadians: if True then it is an angular size of all steps, else  size of each step
Returns: the list of created
groups
if MakeGroups == True, empty list otherwise Axis – the axis of rotation,

RotationSweepObject1D
(theObject, Axis, AngleInRadians, NbOfSteps, Tolerance, MakeGroups=False, TotalAngle=False)¶ Generate new elements by rotation of the elements of object around the axis theObject object which elements should be sweeped. It can be a mesh, a sub mesh or a group.
Parameters:  Axis – the axis of rotation,
SMESH.AxisStruct
or line(geom object)  AngleInRadians – the angle of Rotation
 NbOfSteps – number of steps
 Tolerance – tolerance
 MakeGroups – forces the generation of new groups from existing ones
 TotalAngle – gives meaning of AngleInRadians: if True then it is an angular size of all steps, else  size of each step
Returns: the list of created
groups
if MakeGroups == True, empty list otherwise Axis – the axis of rotation,

RotationSweepObject2D
(theObject, Axis, AngleInRadians, NbOfSteps, Tolerance, MakeGroups=False, TotalAngle=False)¶ Generate new elements by rotation of the elements of object around the axis theObject object which elements should be sweeped. It can be a mesh, a sub mesh or a group.
Parameters:  Axis – the axis of rotation,
SMESH.AxisStruct
or line(geom object)  AngleInRadians – the angle of Rotation
 NbOfSteps – number of steps
 Tolerance – tolerance
 MakeGroups – forces the generation of new groups from existing ones
 TotalAngle – gives meaning of AngleInRadians: if True then it is an angular size of all steps, else  size of each step
Returns: the list of created
groups
if MakeGroups == True, empty list otherwise Axis – the axis of rotation,

RotationSweepObjects
(nodes, edges, faces, Axis, AngleInRadians, NbOfSteps, Tolerance, MakeGroups=False, TotalAngle=False)¶ Generate new elements by rotation of the given elements and nodes around the axis
Parameters:  nodes – nodes to revolve: a list including ids,
a mesh, submeshes, groups or filters
 edges – edges to revolve: a list including ids,
a mesh, submeshes, groups or filters
 faces – faces to revolve: a list including ids,
a mesh, submeshes, groups or filters
 Axis – the axis of rotation:
SMESH.AxisStruct
, line (geom object) or [x,y,z,dx,dy,dz]  AngleInRadians – the angle of Rotation (in radians) or a name of variable which defines angle in degrees
 NbOfSteps – the number of steps
 Tolerance – tolerance
 MakeGroups – forces the generation of new groups from existing ones
 TotalAngle – gives meaning of AngleInRadians: if True then it is an angular size of all steps, else  size of each step
Returns: the list of created
groups
if MakeGroups == True, empty list otherwise nodes – nodes to revolve: a list including ids,

Scale
(theObject, thePoint, theScaleFact, Copy, MakeGroups=False)¶ Scale the object
Parameters:  theObject – the object to translate (
mesh, submesh, group or filter
)  thePoint – base point for scale (
SMESH.PointStruct
or list of 3 coordinates)  theScaleFact – list of 13 scale factors for axises
 Copy – allows copying the translated elements
 MakeGroups – forces the generation of new groups from existing ones (if Copy)
Returns: list of created
groups
if MakeGroups == True, empty list otherwise theObject – the object to translate (

ScaleMakeMesh
(theObject, thePoint, theScaleFact, MakeGroups=False, NewMeshName='')¶ Create a new mesh from the translated object
Parameters:  theObject – the object to translate (
mesh, submesh, group or filter
)  thePoint – base point for scale (
SMESH.PointStruct
or list of 3 coordinates)  theScaleFact – list of 13 scale factors for axises
 MakeGroups – forces the generation of new groups from existing ones
 NewMeshName – the name of the newly created mesh
Returns: instance of class
Mesh
 theObject – the object to translate (

Segment
(geom_shape=0)¶ Create segment 1D algorithm for edges
This method is dynamically added to
Mesh
class by the meshing plugin(s).If the optional geom_shape parameter is not set, this algorithm is global (applied to whole mesh). Otherwise, this algorithm defines a submesh based on geom_shape subshape.
Parameters:  algo_type – type of algorithm to be created; allowed values are specified by classes implemented by plugin
 geom_shape (GEOM_Object) – if defined, the subshape to be meshed
Returns: An instance of Mesh_Algorithm subclass according to the specified algo_type, see
StdMeshersBuilder_CompositeSegment
,StdMeshersBuilder_Segment
,StdMeshersBuilder_Segment_Python

SetAutoColor
(theAutoColor)¶ Toggle auto color mode on the object. If switched on, a default color of a new group in Create Group dialog is chosen randomly.
Parameters: theAutoColor (boolean) – the flag which toggles auto color mode.

SetMesh
(theMesh)¶ Initialize the Mesh object from an instance of
SMESH.SMESH_Mesh
interfaceParameters: theMesh – a SMESH.SMESH_Mesh
object

SetMeshElementOnShape
(ElementID, Shape)¶ Bind an element to a shape
Parameters:  ElementID – an element ID
 Shape – a shape (GEOM.GEOM_Object) or shape ID
Returns: True if succeed else raises an exception

SetMeshOrder
(submeshes)¶ Set priority of submeshes. It works in two ways:
 For submeshes with assigned algorithms of same dimension generating mesh of several dimensions, it sets the order in which the submeshes are computed.
 For the rest submeshes, it sets the order in which the submeshes are checked when looking for meshing parameters to apply to a subshape. To impose the order in which submeshes with unidimensional algorithms are computed, call submesh.Compute() in a desired order.
Parameters: submeshes – list of lists of submeshes
 Warning: the method is for setting the order for all submeshes at once:
 SetMeshOrder( [ [sm1, sm2, sm3], [sm4, sm5] ] )

SetName
(name)¶ Set a name to the mesh
Parameters: name – a new name of the mesh

SetNodeInVolume
(NodeID, Solid)¶ Bind a node to a solid
Parameters:  NodeID – a node ID
 Solid – a solid (GEOM.GEOM_Object) or solid ID
Returns: True if succeed else raises an exception

SetNodeOnEdge
(NodeID, Edge, paramOnEdge)¶ Store the node position on an edge
Parameters:  NodeID – a node ID
 Edge – an edge (GEOM.GEOM_Object) or edge ID
 paramOnEdge – a parameter on the edge where the node is located
Returns: True if succeed else raises an exception

SetNodeOnFace
(NodeID, Face, u, v)¶ Store node position on a face
Parameters:  NodeID – a node ID
 Face – a face (GEOM.GEOM_Object) or face ID
 u – U parameter on the face where the node is located
 v – V parameter on the face where the node is located
Returns: True if succeed else raises an exception

SetNodeOnVertex
(NodeID, Vertex)¶ Bind a node to a vertex
Parameters:  NodeID – a node ID
 Vertex – a vertex (GEOM.GEOM_Object) or vertex ID
Returns: True if succeed else raises an exception

SetShape
(geom)¶ Associate the given shape to the mesh (entails the recreation of the mesh)
Parameters: geom – the shape to be meshed (GEOM_Object)

SewBorderToSide
(FirstNodeIDOnFreeBorder, SecondNodeIDOnFreeBorder, LastNodeIDOnFreeBorder, FirstNodeIDOnSide, LastNodeIDOnSide, CreatePolygons, CreatePolyedrs)¶ Sew border to side
Returns: error code
Note
This operation can create gaps in numeration of elements. Call
RenumberElements()
to remove the gaps.

SewCoincidentFreeBorders
(freeBorders, createPolygons=False, createPolyhedra=False)¶ Sew FreeBorder’s of each group
Parameters:  freeBorders – either a SMESH.CoincidentFreeBorders structure or a list of lists where each enclosed list contains node IDs of a group of coincident free borders such that each consequent triple of IDs within a group describes a free border in a usual way: n1, n2, nLast  i.e. 1st node, 2nd node and last node of a border. For example [[1, 2, 10, 20, 21, 40], [11, 12, 15, 55, 54, 41]] describes two groups of coincident free borders, each group including two borders.
 createPolygons – if
True
faces adjacent to free borders are converted to polygons if a node of opposite border falls on a face edge, else such faces are split into several ones.  createPolyhedra – if
True
volumes adjacent to free borders are converted to polyhedra if a node of opposite border falls on a volume edge, else such volumes, if any, remain intact and the mesh becomes nonconformal.
Returns: a number of successfully sewed groups
Note
This operation can create gaps in numeration of nodes or elements. Call
RenumberElements()
to remove the gaps.

SewConformFreeBorders
(FirstNodeID1, SecondNodeID1, LastNodeID1, FirstNodeID2, SecondNodeID2)¶ Sew conform free borders
Returns: error code
Note
This operation can create gaps in numeration of elements. Call
RenumberElements()
to remove the gaps.

SewFreeBorders
(FirstNodeID1, SecondNodeID1, LastNodeID1, FirstNodeID2, SecondNodeID2, LastNodeID2, CreatePolygons, CreatePolyedrs)¶ Sew free borders
Returns: error code
Note
This operation can create gaps in numeration of nodes or elements. Call
RenumberElements()
to remove the gaps.

SewSideElements
(IDsOfSide1Elements, IDsOfSide2Elements, NodeID1OfSide1ToMerge, NodeID1OfSide2ToMerge, NodeID2OfSide1ToMerge, NodeID2OfSide2ToMerge)¶ Sew two sides of a mesh. The nodes belonging to Side1 are merged with the nodes of elements of Side2. The number of elements in theSide1 and in theSide2 must be equal and they should have similar nodal connectivity. The nodes to merge should belong to side borders and the first node should be linked to the second.
Returns: error code
Note
This operation can create gaps in numeration of nodes. Call
RenumberElements()
to remove the gaps.

Smooth
(IDsOfElements, IDsOfFixedNodes, MaxNbOfIterations, MaxAspectRatio, Method)¶ Smooth elements
Parameters:  IDsOfElements – the list if ids of elements to smooth
 IDsOfFixedNodes – the list of ids of fixed nodes. Note that nodes built on edges and boundary nodes are always fixed.
 MaxNbOfIterations – the maximum number of iterations
 MaxAspectRatio – varies in range [1.0, inf]
 Method – is either Laplacian (smesh.LAPLACIAN_SMOOTH) or Centroidal (smesh.CENTROIDAL_SMOOTH)
Returns: True in case of success, False otherwise.

SmoothObject
(theObject, IDsOfFixedNodes, MaxNbOfIterations, MaxAspectRatio, Method)¶ Smooth elements which belong to the given object
Parameters:  theObject – the object to smooth
 IDsOfFixedNodes – the list of ids of fixed nodes. Note that nodes built on edges and boundary nodes are always fixed.
 MaxNbOfIterations – the maximum number of iterations
 MaxAspectRatio – varies in range [1.0, inf]
 Method – is either Laplacian (smesh.LAPLACIAN_SMOOTH) or Centroidal (smesh.CENTROIDAL_SMOOTH)
Returns: True in case of success, False otherwise.

SmoothParametric
(IDsOfElements, IDsOfFixedNodes, MaxNbOfIterations, MaxAspectRatio, Method)¶ Parametrically smooth the given elements
Parameters:  IDsOfElements – the list if ids of elements to smooth
 IDsOfFixedNodes – the list of ids of fixed nodes. Note that nodes built on edges and boundary nodes are always fixed.
 MaxNbOfIterations – the maximum number of iterations
 MaxAspectRatio – varies in range [1.0, inf]
 Method – is either Laplacian (smesh.LAPLACIAN_SMOOTH) or Centroidal (smesh.CENTROIDAL_SMOOTH)
Returns: True in case of success, False otherwise.

SmoothParametricObject
(theObject, IDsOfFixedNodes, MaxNbOfIterations, MaxAspectRatio, Method)¶ Parametrically smooth the elements which belong to the given object
Parameters:  theObject – the object to smooth
 IDsOfFixedNodes – the list of ids of fixed nodes. Note that nodes built on edges and boundary nodes are always fixed.
 MaxNbOfIterations – the maximum number of iterations
 MaxAspectRatio – varies in range [1.0, inf]
 Method – is either Laplacian (smesh.LAPLACIAN_SMOOTH) or Centroidal (smesh.CENTROIDAL_SMOOTH)
Returns: True in case of success, False otherwise.

SplitBiQuadraticIntoLinear
(elems=None)¶ Split biquadratic elements into linear ones without creation of additional nodes:
 biquadratic triangle will be split into 3 linear quadrangles;
 biquadratic quadrangle will be split into 4 linear quadrangles;
 triquadratic hexahedron will be split into 8 linear hexahedra.
Quadratic elements of lower dimension adjacent to the split biquadratic element will be split in order to keep the mesh conformal.
Parameters: elems – elements to split: mesh, submesh, group, filter
or element IDs; if None (default), all biquadratic elements will be splitNote
This operation can create gaps in numeration of elements. Call
RenumberElements()
to remove the gaps.

SplitHexaToPrisms
(theObject, theNode000, theNode001)¶ Split hexahedrons into prisms.
Uses the Pattern mapping functionality for splitting.
Parameters:  theObject – the object (
mesh, submesh, group or filter
) from where the list of hexahedrons is taken;  theNode000,theNode001 – (within the range [0,7]) gives the orientation of the pattern relatively each hexahedron: keypoint (0,0,0) of the pattern will be mapped into the theNode000 th node of each volume, keypoint (0,0,1) will be mapped into the theNode001 th node of each volume. Edge (0,0,0)(0,0,1) of used pattern connects two not split corners.
Returns: True in case of success, False otherwise.
Note
This operation can create gaps in numeration of elements. Call
RenumberElements()
to remove the gaps. theObject – the object (

SplitHexaToTetras
(theObject, theNode000, theNode001)¶ Split hexahedrons into tetrahedrons.
This operation uses Pattern mapping functionality for splitting.
Parameters:  theObject – the object from which the list of hexahedrons is taken;
this is
mesh, submesh, group or filter
 theNode000,theNode001 – within the range [0,7]; gives the orientation of the pattern relatively each hexahedron: the (0,0,0) keypoint of the pattern will be mapped into theNode000th node of each volume, the (0,0,1) keypoint will be mapped into theNode001th node of each volume. The (0,0,0) keypoint of the used pattern corresponds to a nonsplit corner.
Returns: True in case of success, False otherwise.
Note
This operation can create gaps in numeration of elements. Call
RenumberElements()
to remove the gaps. theObject – the object from which the list of hexahedrons is taken;
this is

SplitHexahedraIntoPrisms
(elems, startHexPoint, facetNormal, method=1, allDomains=False)¶ Split hexahedra into prisms
Parameters:  elems – either a list of elements or a
mesh, submesh, group or filter
 startHexPoint – a point used to find a hexahedron for which facetNormal gives a normal vector defining facets to split into triangles. startHexPoint can be either a triple of coordinates or a vertex.
 facetNormal – a normal to a facet to split into triangles of a hexahedron found by startHexPoint. facetNormal can be either a triple of coordinates or an edge.
 method – flags passing splitting method: smesh.Hex_2Prisms, smesh.Hex_4Prisms. smesh.Hex_2Prisms  to split the hexahedron into 2 prisms, etc.
 allDomains – if
False
, only hexahedra adjacent to one closest to startHexPoint are split, else startHexPoint is used to find the facet to split in all domains present in elems.
Note
This operation can create gaps in numeration of elements. Call
RenumberElements()
to remove the gaps. elems – either a list of elements or a

SplitQuad
(IDsOfElements, Diag13)¶ Split quadrangles into triangles.
Parameters:  IDsOfElements – the faces to be splitted
 Diag13 (boolean) – is used to choose a diagonal for splitting.
Returns: True in case of success, False otherwise.
Note
This operation can create gaps in numeration of elements. Call
RenumberElements()
to remove the gaps.

SplitQuadObject
(theObject, Diag13)¶ Split quadrangles into triangles.
Parameters:  theObject – the object from which the list of elements is taken,
this is
mesh, submesh, group or filter
 Diag13 (boolean) – is used to choose a diagonal for splitting.
Returns: True in case of success, False otherwise.
Note
This operation can create gaps in numeration of elements. Call
RenumberElements()
to remove the gaps. theObject – the object from which the list of elements is taken,
this is

SplitQuadsNearTriangularFacets
()¶ Split quadrangle faces near triangular facets of volumes
Note
This operation can create gaps in numeration of elements. Call
RenumberElements()
to remove the gaps.

SplitVolumesIntoTetra
(elems, method=1)¶ Split volumic elements into tetrahedrons
Parameters:  elems – either a list of elements or a
mesh, submesh, group or filter
 method – flags passing splitting method: smesh.Hex_5Tet, smesh.Hex_6Tet, smesh.Hex_24Tet. smesh.Hex_5Tet  to split the hexahedron into 5 tetrahedrons, etc.
Note
This operation can create gaps in numeration of elements. Call
RenumberElements()
to remove the gaps. elems – either a list of elements or a

Translate
(IDsOfElements, Vector, Copy, MakeGroups=False)¶ Translate the elements
Parameters:  IDsOfElements – list of elements ids
 Vector – the direction of translation (
SMESH.DirStruct
or vector or 3 vector components)  Copy – allows copying the translated elements
 MakeGroups – forces the generation of new groups from existing ones (if Copy)
Returns: list of created
groups
if MakeGroups == True, empty list otherwise

TranslateMakeMesh
(IDsOfElements, Vector, MakeGroups=False, NewMeshName='')¶ Create a new mesh of translated elements
Parameters:  IDsOfElements – list of elements ids
 Vector – the direction of translation (
SMESH.DirStruct
or vector or 3 vector components)  MakeGroups – forces the generation of new groups from existing ones
 NewMeshName – the name of the newly created mesh
Returns: instance of class
Mesh

TranslateObject
(theObject, Vector, Copy, MakeGroups=False)¶ Translate the object
Parameters:  theObject – the object to translate (
mesh, submesh, group or filter
)  Vector – direction of translation (
SMESH.DirStruct
or geom vector or 3 vector components)  Copy – allows copying the translated elements
 MakeGroups – forces the generation of new groups from existing ones (if Copy)
Returns: list of created
groups
if MakeGroups == True, empty list otherwise theObject – the object to translate (

TranslateObjectMakeMesh
(theObject, Vector, MakeGroups=False, NewMeshName='')¶ Create a new mesh from the translated object
Parameters:  theObject – the object to translate (
mesh, submesh, group or filter
)  Vector – the direction of translation (
SMESH.DirStruct
or geom vector or 3 vector components)  MakeGroups – forces the generation of new groups from existing ones
 NewMeshName – the name of the newly created mesh
Returns: instance of class
Mesh
 theObject – the object to translate (

TriToQuad
(IDsOfElements, theCriterion, MaxAngle)¶ Fuse the neighbouring triangles into quadrangles.
Parameters:  IDsOfElements – The triangles to be fused.
 theCriterion – a numerical functor, in terms of enum
SMESH.FunctorType
, used to applied to possible quadrangles to choose a neighbour to fuse with. Note that not all items ofSMESH.FunctorType
corresponds to numerical functors.  MaxAngle – is the maximum angle between element normals at which the fusion is still performed; theMaxAngle is measured in radians. Also it could be a name of variable which defines angle in degrees.
Returns: True in case of success, False otherwise.
Note
This operation can create gaps in numeration of elements. Call
RenumberElements()
to remove the gaps.

TriToQuadObject
(theObject, theCriterion, MaxAngle)¶ Fuse the neighbouring triangles of the object into quadrangles
Parameters:  theObject – is
mesh, submesh, group or filter
 theCriterion – is a numerical functor, in terms of enum
SMESH.FunctorType
, applied to possible quadrangles to choose a neighbour to fuse with. Note that not all items ofSMESH.FunctorType
corresponds to numerical functors.  MaxAngle – a max angle between element normals at which the fusion is still performed; theMaxAngle is measured in radians.
Returns: True in case of success, False otherwise.
Note
This operation can create gaps in numeration of elements. Call
RenumberElements()
to remove the gaps. theObject – is

Triangle
(geom_shape=0)¶ Create triangle 2D algorithm for faces
This method is dynamically added to
Mesh
class by the meshing plugin(s).If the optional geom_shape parameter is not set, this algorithm is global (applied to whole mesh). Otherwise, this algorithm defines a submesh based on geom_shape subshape.
Parameters:  algo_type – type of algorithm to be created; allowed values are specified by classes implemented by plugin
 geom_shape (GEOM_Object) – if defined, the subshape to be meshed
Returns: An instance of Mesh_Algorithm subclass according to the specified algo_type, see
StdMeshersBuilder_Triangle_MEFISTO

UnionGroups
(group1, group2, name)¶ Produce a union of two groups. A new group is created. All mesh elements that are present in the initial groups are added to the new one
Parameters:  group1 (SMESH.SMESH_GroupBase) – a group
 group2 (SMESH.SMESH_GroupBase) – another group
Returns: instance of
SMESH.SMESH_Group

UnionListOfGroups
(groups, name)¶ Produce a union list of groups. New group is created. All mesh elements that are present in initial groups are added to the new one
Parameters: groups – list of SMESH.SMESH_GroupBase
Returns: instance of SMESH.SMESH_Group

UseExisting1DElements
(geom_shape=0)¶ Create 1D algorithm for edges with reusing of existing mesh elements
This method is dynamically added to
Mesh
class by the meshing plugin(s).If the optional geom_shape parameter is not set, this algorithm is global (applied to whole mesh). Otherwise, this algorithm defines a submesh based on geom_shape subshape.
Parameters:  algo_type – type of algorithm to be created; allowed values are specified by classes implemented by plugin
 geom_shape (GEOM_Object) – if defined, the subshape to be meshed
Returns: An instance of Mesh_Algorithm subclass according to the specified algo_type, see
StdMeshersBuilder_UseExistingElements_1D

UseExisting2DElements
(geom_shape=0)¶ Create 1D2D algorithm for faces with reusing of existing mesh elements
This method is dynamically added to
Mesh
class by the meshing plugin(s).If the optional geom_shape parameter is not set, this algorithm is global (applied to whole mesh). Otherwise, this algorithm defines a submesh based on geom_shape subshape.
Parameters:  algo_type – type of algorithm to be created; allowed values are specified by classes implemented by plugin
 geom_shape (GEOM_Object) – if defined, the subshape to be meshed
Returns: An instance of Mesh_Algorithm subclass according to the specified algo_type, see
StdMeshersBuilder_UseExistingElements_1D2D

UseExistingFaces
(geom_shape=0)¶ Create 2D algorithm allowing batch meshing of faces
This method is dynamically added to
Mesh
class by the meshing plugin(s).If the optional geom_shape parameter is not set, this algorithm is global (applied to whole mesh). Otherwise, this algorithm defines a submesh based on geom_shape subshape.
Parameters:  algo_type – type of algorithm to be created; allowed values are specified by classes implemented by plugin
 geom_shape (GEOM_Object) – if defined, the subshape to be meshed
Returns: An instance of Mesh_Algorithm subclass according to the specified algo_type, see
StdMeshersBuilder_UseExisting_2D

UseExistingSegments
(geom_shape=0)¶ Create 1D algorithm allowing batch meshing of edges
This method is dynamically added to
Mesh
class by the meshing plugin(s).If the optional geom_shape parameter is not set, this algorithm is global (applied to whole mesh). Otherwise, this algorithm defines a submesh based on geom_shape subshape.
Parameters:  algo_type – type of algorithm to be created; allowed values are specified by classes implemented by plugin
 geom_shape (GEOM_Object) – if defined, the subshape to be meshed
Returns: An instance of Mesh_Algorithm subclass according to the specified algo_type, see
StdMeshersBuilder_UseExisting_1D
