src/SMESH_SWIG/ex13_hole1partial.py

   1 #  -*- coding: iso-8859-1 -*-
   2 #  Copyright (C) 2007-2010  CEA/DEN, EDF R&D, OPEN CASCADE
   3 #
   4 #  Copyright (C) 2003-2007  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
   5 #  CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
   6 #
   7 #  This library is free software; you can redistribute it and/or
   8 #  modify it under the terms of the GNU Lesser General Public
   9 #  License as published by the Free Software Foundation; either
  10 #  version 2.1 of the License.
  11 #
  12 #  This library is distributed in the hope that it will be useful,
  13 #  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 #  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15 #  Lesser General Public License for more details.
  16 #
  17 #  You should have received a copy of the GNU Lesser General Public
  18 #  License along with this library; if not, write to the Free Software
  19 #  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  20 #
  21 #  See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
  22 #
  23
  24 # ==================================
  25 #
  26 from geompy import *
  27
  28 import smesh
  29
  30 # Geometry
  31 # ========
  32
  33 # With hexahedral, build a box partially holed by a not centered cylinder with a thickness
  34
  35 # Values
  36 # ------
  37
  38 box_dx = 1000
  39 box_dy =  900
  40 box_dz =  800
  41
  42 cyl_x      = 500
  43 cyl_y      = 300
  44 cyl_dz     = 600
  45 cyl_radius = 150
  46 cyl_thick  =  30
  47
  48 # Triangular face
  49 # ---------------
  50
  51 def triangle(p1, p2, p3):
  52     l = []
  53     l.append(MakeEdge(p1, p2))
  54     l.append(MakeEdge(p2, p3))
  55     l.append(MakeEdge(p3, p1))
  56     w = MakeWire(l)
  57     return MakeFace(w, 1)
  58
  59 # The holed part
  60 # ==============
  61
  62 # Vertex of the holed part
  63 # ------------------------
  64
  65 hole_point_11 = MakeVertex(0     , 0     , 0)
  66 hole_point_21 = MakeVertex(box_dx, 0     , 0)
  67 hole_point_12 = MakeVertex(0     , box_dy, 0)
  68 hole_point_22 = MakeVertex(box_dx, box_dy, 0)
  69
  70 hole_center   = MakeVertex(cyl_x, cyl_y, 0)
  71
  72 # Faces of the holed part
  73 # -----------------------
  74
  75 hole_face_1 = triangle(hole_point_11, hole_point_21, hole_center)
  76 hole_face_2 = triangle(hole_point_21, hole_point_22, hole_center)
  77 hole_face_3 = triangle(hole_point_12, hole_point_22, hole_center)
  78 hole_face_4 = triangle(hole_point_11, hole_point_12, hole_center)
  79
  80 # Solids of the holed part
  81 # ------------------------
  82
  83 cyl_dir = MakeVectorDXDYDZ(0, 0, 1)
  84
  85 hole_solid_1 = MakePrismVecH(hole_face_1, cyl_dir, cyl_dz)
  86 hole_solid_2 = MakePrismVecH(hole_face_2, cyl_dir, cyl_dz)
  87 hole_solid_3 = MakePrismVecH(hole_face_3, cyl_dir, cyl_dz)
  88 hole_solid_4 = MakePrismVecH(hole_face_4, cyl_dir, cyl_dz)
  89
  90 hole_internal = MakeCylinder(hole_center, cyl_dir, cyl_radius          , cyl_dz)
  91 hole_external = MakeCylinder(hole_center, cyl_dir, cyl_radius+cyl_thick, cyl_dz)
  92 hole_median   = MakeCut(hole_external, hole_internal)
  93
  94 # Boolean operations
  95 # ------------------
  96
  97 blocks = []
  98
  99 blocks.append(   MakeCut(hole_solid_1, hole_external))
 100 blocks.append(MakeCommon(hole_solid_1, hole_median  ))
 101
 102 blocks.append(   MakeCut(hole_solid_2, hole_external))
 103 blocks.append(MakeCommon(hole_solid_2, hole_median  ))
 104
 105 blocks.append(   MakeCut(hole_solid_3, hole_external))
 106 blocks.append(MakeCommon(hole_solid_3, hole_median  ))
 107
 108 blocks.append(   MakeCut(hole_solid_4, hole_external))
 109 blocks.append(MakeCommon(hole_solid_4, hole_median  ))
 110
 111 # The full part
 112 # =============
 113
 114 # Vertex of the full part
 115 # -----------------------
 116
 117 full_point_11 = MakeVertex(0     , 0     , cyl_dz)
 118 full_point_21 = MakeVertex(box_dx, 0     , cyl_dz)
 119 full_point_12 = MakeVertex(0     , box_dy, cyl_dz)
 120 full_point_22 = MakeVertex(box_dx, box_dy, cyl_dz)
 121
 122 full_center = MakeVertex(cyl_x, cyl_y, cyl_dz)
 123
 124 # Faces of the full part
 125 # ----------------------
 126
 127 full_face_1 = triangle(full_point_11, full_point_21, full_center)
 128 full_face_2 = triangle(full_point_21, full_point_22, full_center)
 129 full_face_3 = triangle(full_point_12, full_point_22, full_center)
 130 full_face_4 = triangle(full_point_11, full_point_12, full_center)
 131
 132 # Solids of the full part
 133 # ------------------------
 134
 135 full_dz = box_dz - cyl_dz
 136
 137 full_solid_1 = MakePrismVecH(full_face_1, cyl_dir, full_dz)
 138 full_solid_2 = MakePrismVecH(full_face_2, cyl_dir, full_dz)
 139 full_solid_3 = MakePrismVecH(full_face_3, cyl_dir, full_dz)
 140 full_solid_4 = MakePrismVecH(full_face_4, cyl_dir, full_dz)
 141
 142 full_internal = MakeCylinder(full_center, cyl_dir, cyl_radius          , full_dz)
 143 full_external = MakeCylinder(full_center, cyl_dir, cyl_radius+cyl_thick, full_dz)
 144 full_median   = MakeCut(full_external, full_internal)
 145
 146 # Boolean operations
 147 # ------------------
 148
 149 full = []
 150
 151 full.append(   MakeCut(full_solid_1, full_external))
 152 full.append(MakeCommon(full_solid_1, full_median))
 153
 154 full.append(   MakeCut(full_solid_2, full_external))
 155 full.append(MakeCommon(full_solid_2, full_median ))
 156
 157 full.append(   MakeCut(full_solid_3, full_external))
 158 full.append(MakeCommon(full_solid_3, full_median))
 159
 160 full.append(   MakeCut(full_solid_4, full_external))
 161 full.append(MakeCommon(full_solid_4, full_median))
 162
 163 # Filling the hole
 164 # ----------------
 165
 166 box_d = cyl_radius/3
 167
 168 x = cyl_x-box_d
 169 y = x * cyl_y / cyl_x
 170 box_point_11 = MakeVertex(x, y, cyl_dz)
 171
 172 x = cyl_x+box_d
 173 y = (box_dx - x) * cyl_y / (box_dx - cyl_x)
 174 box_point_12 = MakeVertex(x, y, cyl_dz)
 175
 176 x = cyl_x-box_d
 177 y = box_dy - x * (box_dy - cyl_y) / cyl_x
 178 box_point_21 = MakeVertex(x, y, cyl_dz)
 179
 180 x = cyl_x+box_d
 181 y = box_dy - (box_dx - x) * (box_dy - cyl_y) / (box_dx - cyl_x)
 182 box_point_22 = MakeVertex(x, y, cyl_dz)
 183
 184 box_face = MakeQuad4Vertices(box_point_11, box_point_12, box_point_21, box_point_22)
 185
 186 box = MakePrismVecH(box_face, cyl_dir, full_dz)
 187
 188 full.append(box)
 189
 190 full.append(MakeCut(MakeCommon(full_solid_1, full_internal), box))
 191 full.append(MakeCut(MakeCommon(full_solid_2, full_internal), box))
 192 full.append(MakeCut(MakeCommon(full_solid_3, full_internal), box))
 193 full.append(MakeCut(MakeCommon(full_solid_4, full_internal), box))
 194
 195 # Cut the cylinder thikness
 196 # -------------------------
 197
 198 full_plan = MakePlane(MakeVertex(0, 0, cyl_dz+cyl_thick), cyl_dir, 5000)
 199
 200 full_parts = MakePartition(full, [full_plan], [], [], ShapeType["SOLID"])
 201
 202 # Geometry result
 203 # ---------------
 204
 205 blocks.append(full_parts)
 206
 207 piece_cpd = MakeCompound(blocks)
 208
 209 piece_ok = RemoveExtraEdges(piece_cpd, doUnionFaces=True)
 210
 211 piece = MakeGlueFaces(piece_ok, 1.e-3)
 212
 213 piece_id = addToStudy(piece, "ex13_hole1partial")
 214
 215 # Meshing
 216 # =======
 217
 218 smesh.SetCurrentStudy(salome.myStudy)
 219
 220 # Create a mesh
 221 # -------------
 222
 223 hexa = smesh.Mesh(piece, "ex13_hole1partial:hexa")
 224
 225 algo = hexa.Segment()
 226 algo.NumberOfSegments(2)
 227
 228 hexa.Quadrangle()
 229
 230 hexa.Hexahedron()
 231
 232 # Local hypothesis
 233 # ----------------
 234
 235 def local(x, y, z, d):
 236     edge = GetEdgeNearPoint(piece, MakeVertex(x, y, z))
 237     algo = hexa.Segment(edge)
 238     algo.NumberOfSegments(d)
 239     algo.Propagation()
 240
 241 local(0, 0, 100, 40)
 242 local(0, 0, 700, 15)
 243
 244 local(100, 0, 0, 20)
 245 local(0, 100, 0, 20)
 246
 247 local(100, 100, 0, 25)
 248
 249 d = cyl_radius-3*cyl_thick
 250 local(cyl_x+d, cyl_y+d, box_dz, 10)
 251
 252 # Compute the mesh
 253 # ----------------
 254
 255 hexa.Compute()