smesh/src/SMESH_SWIG/ex06_hole1boolean.py

# CEA/LGLS 2004-2005, Francis KLOSS (OCC)
# =======================================

from geompy import *

import smesh

# Geometry
# ========

# A not centered holed cube build by boolean geometric operations

# Values
# ------

ox = 0
oy = 0
oz = 0

longueur1 = 30
longueur2 = 70

largeur1  = 30
largeur2  = 50

hauteur   = 50

rayon = 10

# Triangular face
# ---------------

def triangle(p1, p2, p3):
    l = []
    l.append(MakeEdge(p1, p2))
    l.append(MakeEdge(p2, p3))
    l.append(MakeEdge(p3, p1))
    w = MakeWire(l)
    return MakeFace(w, 1)

# Points
# ------

basePoint111 = MakeVertex(ox-longueur1,  oy, oz-largeur1)
basePoint211 = MakeVertex(ox+longueur2,  oy, oz-largeur1)
basePoint112 = MakeVertex(ox-longueur1,  oy, oz+largeur2)
basePoint212 = MakeVertex(ox+longueur2,  oy, oz+largeur2)

holePoint    = MakeVertex(ox, oy, oz)

# Faces
# -----

baseFace1 = triangle(basePoint111, basePoint211, holePoint)
baseFace2 = triangle(basePoint211, basePoint212, holePoint)
baseFace3 = triangle(basePoint212, basePoint112, holePoint)
baseFace4 = triangle(basePoint112, basePoint111, holePoint)

# Solids
# ------

baseVector = MakeVectorDXDYDZ(0, 1, 0)

baseSolid1 = MakePrismVecH(baseFace1, baseVector, hauteur)
baseSolid2 = MakePrismVecH(baseFace2, baseVector, hauteur)
baseSolid3 = MakePrismVecH(baseFace3, baseVector, hauteur)
baseSolid4 = MakePrismVecH(baseFace4, baseVector, hauteur)

holeSolid = MakeCylinder(holePoint, baseVector, rayon, hauteur)

# Boolean operations
# ------------------

baseHexa1 = MakeCut(baseSolid1, holeSolid)
baseHexa2 = MakeCut(baseSolid2, holeSolid)
baseHexa3 = MakeCut(baseSolid3, holeSolid)
baseHexa4 = MakeCut(baseSolid4, holeSolid)

# Compound, glue and repair
# -------------------------

c_l = []
c_l.append(baseHexa1)
c_l.append(baseHexa2)
c_l.append(baseHexa3)
c_l.append(baseHexa4)

c_cpd = MakeCompound(c_l)
c_glu = MakeGlueFaces(c_cpd, 1.e-5)
piece = RemoveExtraEdges(c_glu)

# Add in study
# ------------

piece_id = addToStudy(piece, "ex06_hole1boolean")

# Meshing
# =======

# Create a hexahedral mesh
# ------------------------

hexa = smesh.Mesh(piece, "ex06_hole1boolean:hexa")

algo = hexa.Segment()

algo.NumberOfSegments(11)

hexa.Quadrangle()

hexa.Hexahedron()

# Create local hypothesis
# -----------------------

edge1 = GetEdgeNearPoint(piece, MakeVertex(ox, oy, oz-largeur1))
algo1 = hexa.Segment(edge1)
algo1.NumberOfSegments(3)
algo1.Propagation()

edge2 = GetEdgeNearPoint(piece, MakeVertex(ox-longueur1, oy, oz))
algo2 = hexa.Segment(edge2)
algo2.NumberOfSegments(5)
algo2.Propagation()

edge3 = GetEdgeNearPoint(piece, MakeVertex(ox, oy, oz+largeur2))
algo3 = hexa.Segment(edge3)
algo3.NumberOfSegments(7)
algo3.Propagation()

edge4 = GetEdgeNearPoint(piece, MakeVertex(ox+longueur2, oy, oz))
algo4 = hexa.Segment(edge4)
algo4.NumberOfSegments(9)
algo4.Propagation()

# Mesh calculus
# -------------

hexa.Compute()