mirror of
https://git.salome-platform.org/gitpub/modules/smesh.git
synced 2024-12-29 02:40:35 +05:00
265 lines
7.5 KiB
Python
265 lines
7.5 KiB
Python
# -*- coding: iso-8859-1 -*-
|
|
# Copyright (C) 2007-2016 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
|
|
#
|
|
|
|
# ==================================
|
|
#
|
|
import salome
|
|
salome.salome_init()
|
|
import GEOM
|
|
from salome.geom import geomBuilder
|
|
geompy = geomBuilder.New(salome.myStudy)
|
|
|
|
import SMESH, SALOMEDS
|
|
from salome.smesh import smeshBuilder
|
|
smesh = smeshBuilder.New(salome.myStudy)
|
|
|
|
# Geometry
|
|
# ========
|
|
|
|
# With hexahedral, build a box partially holed by a not centered cylinder with a thickness
|
|
|
|
# Values
|
|
# ------
|
|
|
|
box_dx = 1000
|
|
box_dy = 900
|
|
box_dz = 800
|
|
|
|
cyl_x = 500
|
|
cyl_y = 300
|
|
cyl_dz = 600
|
|
cyl_radius = 150
|
|
cyl_thick = 30
|
|
|
|
# Triangular face
|
|
# ---------------
|
|
|
|
def triangle(p1, p2, p3):
|
|
l = []
|
|
l.append(geompy.MakeEdge(p1, p2))
|
|
l.append(geompy.MakeEdge(p2, p3))
|
|
l.append(geompy.MakeEdge(p3, p1))
|
|
w = geompy.MakeWire(l)
|
|
return geompy.MakeFace(w, 1)
|
|
|
|
# The holed part
|
|
# ==============
|
|
|
|
# Vertex of the holed part
|
|
# ------------------------
|
|
|
|
hole_point_11 = geompy.MakeVertex(0 , 0 , 0)
|
|
hole_point_21 = geompy.MakeVertex(box_dx, 0 , 0)
|
|
hole_point_12 = geompy.MakeVertex(0 , box_dy, 0)
|
|
hole_point_22 = geompy.MakeVertex(box_dx, box_dy, 0)
|
|
|
|
hole_center = geompy.MakeVertex(cyl_x, cyl_y, 0)
|
|
|
|
# Faces of the holed part
|
|
# -----------------------
|
|
|
|
hole_face_1 = triangle(hole_point_11, hole_point_21, hole_center)
|
|
hole_face_2 = triangle(hole_point_21, hole_point_22, hole_center)
|
|
hole_face_3 = triangle(hole_point_12, hole_point_22, hole_center)
|
|
hole_face_4 = triangle(hole_point_11, hole_point_12, hole_center)
|
|
|
|
# Solids of the holed part
|
|
# ------------------------
|
|
|
|
cyl_dir = geompy.MakeVectorDXDYDZ(0, 0, 1)
|
|
|
|
hole_solid_1 = geompy.MakePrismVecH(hole_face_1, cyl_dir, cyl_dz)
|
|
hole_solid_2 = geompy.MakePrismVecH(hole_face_2, cyl_dir, cyl_dz)
|
|
hole_solid_3 = geompy.MakePrismVecH(hole_face_3, cyl_dir, cyl_dz)
|
|
hole_solid_4 = geompy.MakePrismVecH(hole_face_4, cyl_dir, cyl_dz)
|
|
|
|
hole_internal = geompy.MakeCylinder(hole_center, cyl_dir, cyl_radius , cyl_dz)
|
|
hole_external = geompy.MakeCylinder(hole_center, cyl_dir, cyl_radius+cyl_thick, cyl_dz)
|
|
hole_median = geompy.MakeCut(hole_external, hole_internal)
|
|
|
|
# Boolean operations
|
|
# ------------------
|
|
|
|
blocks = []
|
|
|
|
blocks.append( geompy.MakeCut(hole_solid_1, hole_external))
|
|
blocks.append(geompy.MakeCommon(hole_solid_1, hole_median ))
|
|
|
|
blocks.append( geompy.MakeCut(hole_solid_2, hole_external))
|
|
blocks.append(geompy.MakeCommon(hole_solid_2, hole_median ))
|
|
|
|
blocks.append( geompy.MakeCut(hole_solid_3, hole_external))
|
|
blocks.append(geompy.MakeCommon(hole_solid_3, hole_median ))
|
|
|
|
blocks.append( geompy.MakeCut(hole_solid_4, hole_external))
|
|
blocks.append(geompy.MakeCommon(hole_solid_4, hole_median ))
|
|
|
|
# The full part
|
|
# =============
|
|
|
|
# Vertex of the full part
|
|
# -----------------------
|
|
|
|
full_point_11 = geompy.MakeVertex(0 , 0 , cyl_dz)
|
|
full_point_21 = geompy.MakeVertex(box_dx, 0 , cyl_dz)
|
|
full_point_12 = geompy.MakeVertex(0 , box_dy, cyl_dz)
|
|
full_point_22 = geompy.MakeVertex(box_dx, box_dy, cyl_dz)
|
|
|
|
full_center = geompy.MakeVertex(cyl_x, cyl_y, cyl_dz)
|
|
|
|
# Faces of the full part
|
|
# ----------------------
|
|
|
|
full_face_1 = triangle(full_point_11, full_point_21, full_center)
|
|
full_face_2 = triangle(full_point_21, full_point_22, full_center)
|
|
full_face_3 = triangle(full_point_12, full_point_22, full_center)
|
|
full_face_4 = triangle(full_point_11, full_point_12, full_center)
|
|
|
|
# Solids of the full part
|
|
# ------------------------
|
|
|
|
full_dz = box_dz - cyl_dz
|
|
|
|
full_solid_1 = geompy.MakePrismVecH(full_face_1, cyl_dir, full_dz)
|
|
full_solid_2 = geompy.MakePrismVecH(full_face_2, cyl_dir, full_dz)
|
|
full_solid_3 = geompy.MakePrismVecH(full_face_3, cyl_dir, full_dz)
|
|
full_solid_4 = geompy.MakePrismVecH(full_face_4, cyl_dir, full_dz)
|
|
|
|
full_internal = geompy.MakeCylinder(full_center, cyl_dir, cyl_radius , full_dz)
|
|
full_external = geompy.MakeCylinder(full_center, cyl_dir, cyl_radius+cyl_thick, full_dz)
|
|
full_median = geompy.MakeCut(full_external, full_internal)
|
|
|
|
# Boolean operations
|
|
# ------------------
|
|
|
|
full = []
|
|
|
|
full.append( geompy.MakeCut(full_solid_1, full_external))
|
|
full.append(geompy.MakeCommon(full_solid_1, full_median))
|
|
|
|
full.append( geompy.MakeCut(full_solid_2, full_external))
|
|
full.append(geompy.MakeCommon(full_solid_2, full_median ))
|
|
|
|
full.append( geompy.MakeCut(full_solid_3, full_external))
|
|
full.append(geompy.MakeCommon(full_solid_3, full_median))
|
|
|
|
full.append( geompy.MakeCut(full_solid_4, full_external))
|
|
full.append(geompy.MakeCommon(full_solid_4, full_median))
|
|
|
|
# Filling the hole
|
|
# ----------------
|
|
|
|
box_d = cyl_radius/3
|
|
|
|
x = cyl_x-box_d
|
|
y = x * cyl_y / cyl_x
|
|
box_point_11 = geompy.MakeVertex(x, y, cyl_dz)
|
|
|
|
x = cyl_x+box_d
|
|
y = (box_dx - x) * cyl_y / (box_dx - cyl_x)
|
|
box_point_12 = geompy.MakeVertex(x, y, cyl_dz)
|
|
|
|
x = cyl_x-box_d
|
|
y = box_dy - x * (box_dy - cyl_y) / cyl_x
|
|
box_point_21 = geompy.MakeVertex(x, y, cyl_dz)
|
|
|
|
x = cyl_x+box_d
|
|
y = box_dy - (box_dx - x) * (box_dy - cyl_y) / (box_dx - cyl_x)
|
|
box_point_22 = geompy.MakeVertex(x, y, cyl_dz)
|
|
|
|
box_face = geompy.MakeQuad4Vertices(box_point_11, box_point_12, box_point_21, box_point_22)
|
|
|
|
box = geompy.MakePrismVecH(box_face, cyl_dir, full_dz)
|
|
|
|
full.append(box)
|
|
|
|
full.append(geompy.MakeCut(geompy.MakeCommon(full_solid_1, full_internal), box))
|
|
full.append(geompy.MakeCut(geompy.MakeCommon(full_solid_2, full_internal), box))
|
|
full.append(geompy.MakeCut(geompy.MakeCommon(full_solid_3, full_internal), box))
|
|
full.append(geompy.MakeCut(geompy.MakeCommon(full_solid_4, full_internal), box))
|
|
|
|
# Cut the cylinder thikness
|
|
# -------------------------
|
|
|
|
full_plan = geompy.MakePlane(geompy.MakeVertex(0, 0, cyl_dz+cyl_thick), cyl_dir, 5000)
|
|
|
|
full_parts = geompy.MakePartition(full, [full_plan], [], [], geompy.ShapeType["SOLID"])
|
|
|
|
# Geometry result
|
|
# ---------------
|
|
|
|
blocks.append(full_parts)
|
|
|
|
piece_cpd = geompy.MakeCompound(blocks)
|
|
|
|
piece_ok = geompy.RemoveExtraEdges(piece_cpd, doUnionFaces=True)
|
|
|
|
piece = geompy.MakeGlueFaces(piece_ok, 1.e-3)
|
|
|
|
piece_id = geompy.addToStudy(piece, "ex13_hole1partial")
|
|
|
|
# Meshing
|
|
# =======
|
|
|
|
# Create a mesh
|
|
# -------------
|
|
|
|
hexa = smesh.Mesh(piece, "ex13_hole1partial:hexa")
|
|
|
|
algo = hexa.Segment()
|
|
algo.NumberOfSegments(2)
|
|
|
|
hexa.Quadrangle()
|
|
|
|
hexa.Hexahedron()
|
|
|
|
# Local hypothesis
|
|
# ----------------
|
|
|
|
def local(x, y, z, d):
|
|
edge = geompy.GetEdgeNearPoint(piece, geompy.MakeVertex(x, y, z))
|
|
algo = hexa.Segment(edge)
|
|
algo.NumberOfSegments(d)
|
|
algo.Propagation()
|
|
|
|
local(0, 0, 100, 40)
|
|
local(0, 0, 700, 15)
|
|
|
|
local(100, 0, 0, 20)
|
|
local(0, 100, 0, 20)
|
|
|
|
local(100, 100, 0, 25)
|
|
|
|
d = cyl_radius-3*cyl_thick
|
|
local(cyl_x+d, cyl_y+d, box_dz, 10)
|
|
|
|
# Compute the mesh
|
|
# ----------------
|
|
|
|
hexa.Compute()
|
|
|
|
# Update object browser
|
|
# ---------------------
|
|
|
|
salome.sg.updateObjBrowser(True)
|