smesh/test/ex13_hole1partial.py

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# -*- coding: iso-8859-1 -*-
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# Copyright (C) 2007-2024 CEA, EDF, OPEN CASCADE
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#
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# Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
# CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
#
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# 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
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# version 2.1 of the License, or (at your option) any later version.
#
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# 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.
#
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# 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
#
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# See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
#
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# ==================================
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#
import salome
salome.salome_init()
import GEOM
from salome.geom import geomBuilder
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geompy = geomBuilder.New()
import SMESH, SALOMEDS
from salome.smesh import smeshBuilder
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smesh = smeshBuilder.New()
# 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 thickness
# -------------------------
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
# ----------------
isDone = hexa.Compute()
if not isDone:
raise Exception("Error when computing Mesh")
# Update object browser
# ---------------------
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salome.sg.updateObjBrowser()