mirror of
https://git.salome-platform.org/gitpub/modules/smesh.git
synced 2024-12-26 01:10:35 +05:00
140 lines
3.7 KiB
Python
140 lines
3.7 KiB
Python
# -*- coding: iso-8859-1 -*-
|
|
# Copyright (C) 2007-2022 CEA/DEN, EDF R&D, OPEN CASCADE
|
|
#
|
|
# 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
|
|
#
|
|
|
|
# ==================================
|
|
#
|
|
import math
|
|
|
|
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()
|
|
|
|
geo = geompy
|
|
|
|
# Parameters
|
|
# ----------
|
|
|
|
radius = 50
|
|
height = 200
|
|
|
|
# Build a cylinder
|
|
# ----------------
|
|
|
|
base = geompy.MakeVertex(0, 0, 0)
|
|
direction = geompy.MakeVectorDXDYDZ(0, 0, 1)
|
|
|
|
cylinder = geompy.MakeCylinder(base, direction, radius, height)
|
|
|
|
geompy.addToStudy(cylinder, "cylinder")
|
|
|
|
# Build blocks
|
|
# ------------
|
|
|
|
size = radius/2.0
|
|
|
|
box_rot = geompy.MakeBox(-size, -size, 0, +size, +size, height)
|
|
box_axis = geompy.MakeLine(base, direction)
|
|
box = geompy.MakeRotation(box_rot, box_axis, math.pi/4)
|
|
|
|
hole = geompy.MakeCut(cylinder, box)
|
|
|
|
plane_trim = 2000
|
|
|
|
plane_a = geompy.MakePlane(base, geompy.MakeVectorDXDYDZ(1, 0, 0), plane_trim)
|
|
plane_b = geompy.MakePlane(base, geompy.MakeVectorDXDYDZ(0, 1, 0), plane_trim)
|
|
|
|
blocks_part = geompy.MakePartition([hole], [plane_a, plane_b], [], [], geompy.ShapeType["SOLID"])
|
|
blocks_list = [box] + geompy.SubShapeAll(blocks_part, geompy.ShapeType["SOLID"])
|
|
blocks_all = geompy.MakeCompound(blocks_list)
|
|
blocks = geompy.MakeGlueFaces(blocks_all, 0.0001)
|
|
|
|
geompy.addToStudy(blocks, "cylinder:blocks")
|
|
|
|
# Build geometric groups
|
|
# ----------------------
|
|
|
|
def group(name, shape, type, base=None, direction=None):
|
|
t = geompy.ShapeType[type]
|
|
g = geompy.CreateGroup(shape, t)
|
|
|
|
geompy.addToStudy(g, name)
|
|
g.SetName(name)
|
|
|
|
if base!=None:
|
|
l = geompy.GetShapesOnPlaneWithLocationIDs(shape, t, direction, base, GEOM.ST_ON)
|
|
geompy.UnionIDs(g, l)
|
|
|
|
return g
|
|
|
|
group_a = group("baseA", blocks, "FACE", base, direction)
|
|
|
|
base_b = geompy.MakeVertex(0, 0, height)
|
|
group_b = group("baseB", blocks, "FACE", base_b, direction)
|
|
|
|
group_1 = group("limit", blocks, "SOLID")
|
|
group_1_all = geompy.SubShapeAllIDs(blocks, geompy.ShapeType["SOLID"])
|
|
geompy.UnionIDs(group_1, group_1_all)
|
|
group_1_box = geompy.GetBlockNearPoint(blocks, base)
|
|
geompy.DifferenceList(group_1, [group_1_box])
|
|
|
|
# Mesh the blocks with hexahedral
|
|
# -------------------------------
|
|
|
|
smesh.UpdateStudy()
|
|
|
|
def discretize(x, y, z, n, s=blocks):
|
|
p = geompy.MakeVertex(x, y, z)
|
|
e = geompy.GetEdgeNearPoint(s, p)
|
|
a = hexa.Segment(e)
|
|
a.NumberOfSegments(n)
|
|
a.Propagation()
|
|
|
|
hexa = smesh.Mesh(blocks)
|
|
|
|
hexa_1d = hexa.Segment()
|
|
hexa_1d.NumberOfSegments(1)
|
|
|
|
discretize(+radius , +radius, 0, 5)
|
|
discretize(-radius , +radius, 0, 8)
|
|
discretize((radius+size)/2, 0, 0, 10)
|
|
discretize( +radius, 0, height/2, 20)
|
|
|
|
hexa.Quadrangle()
|
|
hexa.Hexahedron()
|
|
|
|
isDone = hexa.Compute()
|
|
if not isDone:
|
|
raise Exception("Error when computing Mesh")
|
|
|
|
hexa.Group(group_a)
|
|
hexa.Group(group_b)
|
|
hexa.Group(group_1)
|
|
|
|
# Update object browser
|
|
# ---------------------
|
|
|
|
salome.sg.updateObjBrowser()
|