smesh/test/SMESH_flight_skin.py

#  -*- coding: iso-8859-1 -*-
# Copyright (C) 2007-2022  CEA/DEN, EDF R&D, OPEN CASCADE
#
# Copyright (C) 2003-2007  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
# CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
#
# See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
#

# Triangulation of the skin of the geometry from a Brep representing a plane
# Hypothesis and algorithms for the mesh generation are global
#
import os
import salome
salome.salome_init()
import GEOM
from salome.geom import geomBuilder
geompy = geomBuilder.New()

import SMESH, SALOMEDS
from salome.smesh import smeshBuilder
smesh =  smeshBuilder.New()


# ---------------------------- GEOM --------------------------------------

# import a BRep
#before running this script, please be sure about
#the path the file fileName

filePath = os.environ["DATA_DIR"]
filePath = filePath + "/Shapes/Brep/"

filename = "flight_solid.brep"
filename = filePath + filename

shape = geompy.ImportBREP(filename)
idShape = geompy.addToStudy(shape, "flight")

print("Analysis of the geometry flight :")
subShellList = geompy.SubShapeAll(shape, geompy.ShapeType["SHELL"])
subFaceList  = geompy.SubShapeAll(shape, geompy.ShapeType["FACE"])
subEdgeList  = geompy.SubShapeAll(shape, geompy.ShapeType["EDGE"])

print("number of Shells in flight : ", len(subShellList))
print("number of Faces  in flight : ", len(subFaceList))
print("number of Edges  in flight : ", len(subEdgeList))


### ---------------------------- SMESH --------------------------------------
smesh.UpdateStudy()

# ---- init a Mesh with the shell
shape_mesh = salome.IDToObject( idShape )

mesh = smesh.Mesh(shape_mesh, "MeshFlight")


# ---- set Hypothesis and Algorithm

print("-------------------------- LocalLength")

lengthOfSegments = 0.3

regular1D = mesh.Segment()
hypLength = regular1D.LocalLength(lengthOfSegments)
print(hypLength.GetName())
print(hypLength.GetId())
print(hypLength.GetLength())
smesh.SetName(hypLength, "LocalLength_" + str(lengthOfSegments))

print("-------------------------- LengthFromEdges")

triangle = mesh.Triangle()
hypLengthFromEdge = triangle.LengthFromEdges()
print(hypLengthFromEdge.GetName())
print(hypLengthFromEdge.GetId())
smesh.SetName(hypLengthFromEdge,"LengthFromEdge")

print("-------------------------- compute the skin flight")
ret = mesh.Compute()
print(ret)
if not ret:
    raise Exception("Error when computing Mesh")

log = mesh.GetLog(0) # no erase trace
# for linelog in log:
#     print(linelog)
print("Information about the Mesh_mechanic_tetra:")
print("Number of nodes      : ", mesh.NbNodes())
print("Number of edges      : ", mesh.NbEdges())
print("Number of faces      : ", mesh.NbFaces())
print("Number of triangles  : ", mesh.NbTriangles())
print("Number of volumes    : ", mesh.NbVolumes())

salome.sg.updateObjBrowser()