mirror of
https://git.salome-platform.org/gitpub/modules/smesh.git
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Adding python example on how to reproduce content of Mesh information for element and node
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yoann.audouin
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306
doc/examples/viewing_meshes_ex03.py
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306
doc/examples/viewing_meshes_ex03.py
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#!/usr/bin/env python
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###
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### This file shows how to get the information that are displayed when using Mesh Information for elements/nodes
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###
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import sys
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import salome
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salome.salome_init()
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import salome_notebook
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notebook = salome_notebook.NoteBook()
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sys.path.insert(0, r'/local00/home/B61570/work_in_progress/mesh_info')
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###
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### GEOM component
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###
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import GEOM
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from salome.geom import geomBuilder
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import math
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import SALOMEDS
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geompy = geomBuilder.New()
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Box_1 = geompy.MakeBoxDXDYDZ(200, 200, 200)
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geompy.addToStudy( Box_1, 'Box_1' )
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bottom = geompy.CreateGroup(Box_1, geompy.ShapeType["FACE"])
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geompy.UnionIDs(bottom, [31])
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###
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### SMESH component
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###
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import SMESH, SALOMEDS
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from salome.smesh import smeshBuilder
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smesh = smeshBuilder.New()
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## Tetra
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NETGEN_3D_Parameters_1 = smesh.CreateHypothesisByAverageLength( 'NETGEN_Parameters', 'NETGENEngine', 25, 0 )
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Mesh_tetra = smesh.Mesh(Box_1,'Mesh_tetra')
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status = Mesh_tetra.AddHypothesis( Box_1, NETGEN_3D_Parameters_1 )
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NETGEN_1D_2D_3D = Mesh_tetra.Tetrahedron(algo=smeshBuilder.NETGEN_1D2D3D)
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isDone = Mesh_tetra.Compute()
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if not isDone:
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raise ("Could not compute mesh: "+Mesh_tetra.GetName())
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## Tetra
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Mesh_quadratic = smesh.Mesh(Box_1,'Mesh_quadratic')
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NETGEN_1D_2D_3D_1 = Mesh_quadratic.Tetrahedron(algo=smeshBuilder.NETGEN_1D2D3D)
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NETGEN_3D_Parameters_2 = NETGEN_1D_2D_3D_1.Parameters()
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NETGEN_3D_Parameters_2.SetMaxSize( 34.641 )
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NETGEN_3D_Parameters_2.SetMinSize( 0.34641 )
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NETGEN_3D_Parameters_2.SetSecondOrder( 1 )
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isDone = Mesh_quadratic.Compute()
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if not isDone:
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raise ("Could not compute mesh: "+Mesh_quadratic.GetName())
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# Hexa mesh
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Mesh_hexa = smesh.Mesh(Box_1,'Mesh_hexa')
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Regular_1D = Mesh_hexa.Segment()
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Number_of_Segments_1 = Regular_1D.NumberOfSegments(15)
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Quadrangle_2D = Mesh_hexa.Quadrangle(algo=smeshBuilder.QUADRANGLE)
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Hexa_3D = Mesh_hexa.Hexahedron(algo=smeshBuilder.Hexa)
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isDone = Mesh_hexa.Compute()
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if not isDone:
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raise ("Could not compute mesh: "+Mesh_hexa.GetName())
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# Poly Mesh
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Mesh_poly = smesh.CreateDualMesh(Mesh_tetra, 'dual_Mesh_1', True)
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# Prism mesh
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Mesh_prism = smesh.Mesh(Box_1,'Mesh_prism')
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Regular_1D_1 = Mesh_prism.Segment()
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Number_of_Segments_2 = Regular_1D_1.NumberOfSegments(15)
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NETGEN_1D_2D = Mesh_prism.Triangle(algo=smeshBuilder.NETGEN_1D2D,geom=bottom)
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NETGEN_2D_Parameters_1 = NETGEN_1D_2D.Parameters()
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NETGEN_2D_Parameters_1.SetMaxSize(35)
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NETGEN_2D_Parameters_1.SetMinSize(0.3)
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Prism_3D = Mesh_prism.Prism()
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isDone = Mesh_prism.Compute()
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if not isDone:
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raise ("Could not compute mesh: "+Mesh_prism.GetName())
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# Pyramid mesh
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Mesh_pyramids = smesh.Mesh(Box_1,'Mesh_pyramids')
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Regular_1D_2 = Mesh_pyramids.Segment()
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Number_of_Segments_3 = Regular_1D_2.NumberOfSegments(15)
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Quadrangle_2D_1 = Mesh_pyramids.Quadrangle(algo=smeshBuilder.QUADRANGLE)
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NETGEN_3D = Mesh_pyramids.Tetrahedron()
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bottom_1 = Mesh_pyramids.GroupOnGeom(bottom,'bottom',SMESH.FACE)
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isDone = Mesh_pyramids.Compute()
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if not isDone:
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raise ("Could not compute mesh: "+Mesh_pyramids.GetName())
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## Set names of Mesh objects
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smesh.SetName(NETGEN_1D_2D_3D.GetAlgorithm(), 'NETGEN 1D-2D-3D')
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smesh.SetName(NETGEN_3D_Parameters_1, 'NETGEN 3D Parameters_1')
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smesh.SetName(Mesh_tetra.GetMesh(), 'Mesh_tetra')
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smesh.SetName(Mesh_hexa.GetMesh(), 'Mesh_hexa')
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if salome.sg.hasDesktop():
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salome.sg.updateObjBrowser()
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# Look in SMESH_GUI/SMESHGUI_MeshInfo.cxx +1666 for list of what is
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def face_info(mesh, elem_id):
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"""
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Print equivalent of Mesh Information for a face
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"""
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elem_type = mesh.GetElementGeomType(elem_id)
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conn = mesh.GetElemNodes(elem_id)
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nb_nodes = len(conn)
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position = mesh.GetElementPosition(elem_id)
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pos = f"{position.shapeType} #{position.shapeID}"
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grav_center = mesh.BaryCenter(elem_id)
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normal = mesh.GetFaceNormal(elem_id, normalized=True)
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aspect_ratio = mesh.GetAspectRatio(elem_id)
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#aspect_ratio = mesh.FunctorValue(SMESH.FT_AspectRatio, elem_id, isElem=True)
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warping = mesh.GetWarping(elem_id)
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#warping = mesh.FunctorValue(SMESH.FT_Warping, elem_id, isElem=True)
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min_angle = mesh.GetMinimumAngle(elem_id)
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#min_angle = mesh.FunctorValue(SMESH.FT_MinimumAngle, elem_id, isElem=True)
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taper = mesh.GetTaper(elem_id)
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#taper = mesh.FunctorValue(SMESH.FT_Taper, elem_id, isElem=True)
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skew = mesh.GetSkew(elem_id)
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#skew = mesh.FunctorValue(SMESH.FT_Skew, elem_id, isElem=True)
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area = mesh.GetArea(elem_id)
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#area = mesh.FunctorValue(SMESH.FT_Area, elem_id, isElem=True)
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diameter = mesh.GetMaxElementLength(elem_id)
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#diameter = mesh.FunctorValue(SMESH.FT_MaxElementLength2D, elem_id, isElem=True)
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min_length = mesh.FunctorValue(SMESH.FT_Length2D, elem_id, isElem=True)
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string = f"""
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Id: {elem_id}
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Type: {elem_type}
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Nb Nodes: {nb_nodes}
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Connectivity: {conn}
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Position: {pos}
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Gravity center:
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- X: {grav_center[0]}
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- Y: {grav_center[1]}
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- Z: {grav_center[2]}
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Normal:
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- X: {normal[0]}
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- Y: {normal[1]}
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- Z: {normal[2]}
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Quality:
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- Aspect Ratio: {aspect_ratio}
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- Warping: {warping}
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- Minimum Angle: {min_angle}
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- Taper: {taper}
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- Skew: {skew}
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- Area: {area}
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- Element Diameter 2D: {diameter}
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- Minimum Edge Length: {min_length}
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"""
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print(string)
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def volume_info(mesh, elem_id):
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"""
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Print equivalent of Mesh Information for a volume
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"""
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elem_type = mesh.GetElementGeomType(elem_id)
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if elem_type in [SMESH.Entity_Polyhedra, SMESH.Entity_Quad_Polyhedra]:
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iface = 1
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face_conn = [12]
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conn = []
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while face_conn != []:
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face_conn = mesh.GetElemFaceNodes(elem_id, iface)
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iface += 1
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conn.append(face_conn)
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nb_nodes = len(mesh.GetElemNodes(elem_id))
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else:
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conn = mesh.GetElemNodes(elem_id)
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nb_nodes = len(conn)
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position = mesh.GetElementPosition(elem_id)
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pos = f"{position.shapeType} #{position.shapeID}"
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grav_center = mesh.BaryCenter(elem_id)
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aspect_ratio = mesh.GetAspectRatio(elem_id)
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#aspect_ratio = mesh.FunctorValue(SMESH.FT_AspectRatio3D, elem_id, isElem=True)
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volume = mesh.GetVolume(elem_id)
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#volume = mesh.FunctorValue(SMESH.FT_Volume3D, elem_id, isElem=True)
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jacob = mesh.GetScaledJacobian(elem_id)
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#jacob = mesh.FunctorValue(SMESH.FT_ScaledJacobian, elem_id, isElem=True)
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diameter = mesh.GetMaxElementLength(elem_id)
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#diameter = mesh.FunctorValue(SMESH.FT_MaxElementLength3D, elem_id, isElem=True)
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min_length = mesh.FunctorValue(SMESH.FT_Length3D, elem_id, isElem=True)
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string = f"""
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Id: {elem_id}
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Type: {elem_type}
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Nb Nodes: {nb_nodes}
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Connectivity: {conn}
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Position: {pos}
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Gravity center:
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- X: {grav_center[0]}
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- Y: {grav_center[1]}
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- Z: {grav_center[2]}
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Quality:
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- Aspect Ratio 3D: {aspect_ratio}
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- Volume: {volume}
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- Scaled Jacobian: {jacob}
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- Element Diameter 3D: {diameter}
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- Minimum Edge Length: {min_length}
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"""
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print(string)
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def node_info(mesh, node_id):
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coord = mesh.GetNodeXYZ(node_id)
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conn_edge = mesh.GetNodeInverseElements(node_id, SMESH.EDGE)
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conn_face = mesh.GetNodeInverseElements(node_id, SMESH.FACE)
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conn_vol = mesh.GetNodeInverseElements(node_id, SMESH.VOLUME)
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position = mesh.GetNodePosition(node_id)
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pos = f"{position.shapeType} #{position.shapeID}"
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vec = [None, None]
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vec[0:len(position.params)] = position.params
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string = f"""
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Id: {node_id}
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Coordinates:
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- X: {coord[0]}
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- Y: {coord[1]}
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- Z: {coord[2]}
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Connectivity
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- Edges: {conn_edge}
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- Faces: {conn_face}
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- Volumes: {conn_vol}
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Position: {pos}
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- U: {vec[0]}
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- V: {vec[1]}
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"""
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print(string)
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###
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# Volume
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##
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# Tetrahedron
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volume_info(Mesh_tetra, 3000)
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# Hexahedron
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volume_info(Mesh_hexa, 3000)
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# Polyhedron
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volume_info(Mesh_poly, 3000)
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# Prism
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volume_info(Mesh_prism, 1400)
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# Pyramids
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volume_info(Mesh_pyramids, 8176)
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# Quadratic tetra
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volume_info(Mesh_quadratic, 1180)
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###
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# Face
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##
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## Triangle
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face_info(Mesh_tetra, 147)
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#Quadrangle
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face_info(Mesh_hexa, 1464)
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# Polygon
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face_info(Mesh_poly, 771)
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# Quadratic triangle
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face_info(Mesh_quadratic, 138)
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###
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# Node
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###
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# U & V
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node_info(Mesh_tetra, 152)
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# U
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node_info(Mesh_tetra, 32)
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# None
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node_info(Mesh_tetra, 2)
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@ -8,15 +8,15 @@ The user can obtain information about the selected mesh object (mesh, sub-mesh o
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.. |img| image:: ../images/image49.png
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To view the **Mesh Information**, select your mesh, sub-mesh or group in the **Object Browser** and invoke **Mesh Information** item from the **Mesh** menu or from the context menu, or click *"Mesh Information"* button |img| in the toolbar.
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To view the **Mesh Information**, select your mesh, sub-mesh or group in the **Object Browser** and invoke **Mesh Information** item from the **Mesh** menu or from the context menu, or click *"Mesh Information"* button |img| in the toolbar.
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The **Mesh Information** dialog box provides three tab pages:
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* :ref:`Base Info <advanced_mesh_infos_anchor>` - to show base and quantitative information about the selected mesh object.
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* :ref:`Element Info <mesh_element_info_anchor>` - to show detailed information about the selected mesh nodes or elements.
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* :ref:`Additional Info <mesh_addition_info_anchor>` - to show additional information available for the selected mesh, sub-mesh or group object.
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* :ref:`Quality Info <mesh_quality_info_anchor>` - to show overall quality information about the selected mesh, sub-mesh or group object.
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* :ref:`Additional Info <mesh_addition_info_anchor>` - to show additional information available for the selected mesh, sub-mesh or group object.
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* :ref:`Quality Info <mesh_quality_info_anchor>` - to show overall quality information about the selected mesh, sub-mesh or group object.
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.. _dump_mesh_infos:
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@ -68,7 +68,7 @@ The **Element Info** tab page of the dialog box gives detailed information about
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* Position on a shape (for meshes built on a geometry);
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* Groups information (names of groups the element belongs to).
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.. image:: ../images/eleminfo2.png
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.. image:: ../images/eleminfo2.png
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:align: center
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.. centered::
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@ -180,7 +180,4 @@ The **Quality Info** tab provides overall information about mesh quality control
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.. note::
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The plot functionality is available only if the GUI module is built with Plot 2D Viewer (option SALOME_USE_PLOT2DVIEWER is ON when building GUI module).
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See the :ref:`TUI Example <tui_viewing_mesh_infos>`.
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See the :ref:`TUI Example <tui_viewing_mesh_infos>` for basic mesh information and :ref:`TUI Example <tui_node_element_mesh_infos>`.
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@ -1,5 +1,5 @@
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.. _tui_viewing_meshes_page:
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.. _tui_viewing_meshes_page:
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**************
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Viewing Meshes
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@ -7,16 +7,25 @@ Viewing Meshes
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.. _tui_viewing_mesh_infos:
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Viewing Mesh Infos
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##################
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Viewing Basic Mesh Infos
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########################
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.. literalinclude:: ../../examples/viewing_meshes_ex01.py
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:language: python
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:download:`Download this script <../../examples/viewing_meshes_ex01.py>`
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.. _tui_find_element_by_point:
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.. _tui_node_element_mesh_infos:
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Viewing node element Mesh Infos
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###############################
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.. literalinclude:: ../../examples/viewing_meshes_ex03.py
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:language: python
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:download:`Download this script <../../examples/viewing_meshes_ex03.py>`
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.. _tui_find_element_by_point:
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Find Element by Point
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#####################
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