src/SMESH_SWIG/ex13_hole1partial.py

   1 #  -*- coding: iso-8859-1 -*-
   2 #  Copyright (C) 2007-2008  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
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   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.
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  18 #  License along with this library; if not, write to the Free Software
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  20 #
  21 #  See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
  22 #
  23 # ==================================
  24 #
  25 from geompy import *
  26
  27 import smesh
  28
  29 # Geometry
  30 # ========
  31
  32 # With hexahedral, build a box partially holed by a not centered cylinder with a thickness
  33
  34 # Values
  35 # ------
  36
  37 box_dx = 1000
  38 box_dy =  900
  39 box_dz =  800
  40
  41 cyl_x      = 500
  42 cyl_y      = 300
  43 cyl_dz     = 600
  44 cyl_radius = 150
  45 cyl_thick  =  30
  46
  47 # Triangular face
  48 # ---------------
  49
  50 def triangle(p1, p2, p3):
  51     l = []
  52     l.append(MakeEdge(p1, p2))
  53     l.append(MakeEdge(p2, p3))
  54     l.append(MakeEdge(p3, p1))
  55     w = MakeWire(l)
  56     return MakeFace(w, 1)
  57
  58 # The holed part
  59 # ==============
  60
  61 # Vertex of the holed part
  62 # ------------------------
  63
  64 hole_point_11 = MakeVertex(0     , 0     , 0)
  65 hole_point_21 = MakeVertex(box_dx, 0     , 0)
  66 hole_point_12 = MakeVertex(0     , box_dy, 0)
  67 hole_point_22 = MakeVertex(box_dx, box_dy, 0)
  68
  69 hole_center   = MakeVertex(cyl_x, cyl_y, 0)
  70
  71 # Faces of the holed part
  72 # -----------------------
  73
  74 hole_face_1 = triangle(hole_point_11, hole_point_21, hole_center)
  75 hole_face_2 = triangle(hole_point_21, hole_point_22, hole_center)
  76 hole_face_3 = triangle(hole_point_12, hole_point_22, hole_center)
  77 hole_face_4 = triangle(hole_point_11, hole_point_12, hole_center)
  78
  79 # Solids of the holed part
  80 # ------------------------
  81
  82 cyl_dir = MakeVectorDXDYDZ(0, 0, 1)
  83
  84 hole_solid_1 = MakePrismVecH(hole_face_1, cyl_dir, cyl_dz)
  85 hole_solid_2 = MakePrismVecH(hole_face_2, cyl_dir, cyl_dz)
  86 hole_solid_3 = MakePrismVecH(hole_face_3, cyl_dir, cyl_dz)
  87 hole_solid_4 = MakePrismVecH(hole_face_4, cyl_dir, cyl_dz)
  88
  89 hole_internal = MakeCylinder(hole_center, cyl_dir, cyl_radius          , cyl_dz)
  90 hole_external = MakeCylinder(hole_center, cyl_dir, cyl_radius+cyl_thick, cyl_dz)
  91 hole_median   = MakeCut(hole_external, hole_internal)
  92
  93 # Boolean operations
  94 # ------------------
  95
  96 blocks = []
  97
  98 blocks.append(   MakeCut(hole_solid_1, hole_external))
  99 blocks.append(MakeCommon(hole_solid_1, hole_median  ))
 100
 101 blocks.append(   MakeCut(hole_solid_2, hole_external))
 102 blocks.append(MakeCommon(hole_solid_2, hole_median  ))
 103
 104 blocks.append(   MakeCut(hole_solid_3, hole_external))
 105 blocks.append(MakeCommon(hole_solid_3, hole_median  ))
 106
 107 blocks.append(   MakeCut(hole_solid_4, hole_external))
 108 blocks.append(MakeCommon(hole_solid_4, hole_median  ))
 109
 110 # The full part
 111 # =============
 112
 113 # Vertex of the full part
 114 # -----------------------
 115
 116 full_point_11 = MakeVertex(0     , 0     , cyl_dz)
 117 full_point_21 = MakeVertex(box_dx, 0     , cyl_dz)
 118 full_point_12 = MakeVertex(0     , box_dy, cyl_dz)
 119 full_point_22 = MakeVertex(box_dx, box_dy, cyl_dz)
 120
 121 full_center = MakeVertex(cyl_x, cyl_y, cyl_dz)
 122
 123 # Faces of the full part
 124 # ----------------------
 125
 126 full_face_1 = triangle(full_point_11, full_point_21, full_center)
 127 full_face_2 = triangle(full_point_21, full_point_22, full_center)
 128 full_face_3 = triangle(full_point_12, full_point_22, full_center)
 129 full_face_4 = triangle(full_point_11, full_point_12, full_center)
 130
 131 # Solids of the full part
 132 # ------------------------
 133
 134 full_dz = box_dz - cyl_dz
 135
 136 full_solid_1 = MakePrismVecH(full_face_1, cyl_dir, full_dz)
 137 full_solid_2 = MakePrismVecH(full_face_2, cyl_dir, full_dz)
 138 full_solid_3 = MakePrismVecH(full_face_3, cyl_dir, full_dz)
 139 full_solid_4 = MakePrismVecH(full_face_4, cyl_dir, full_dz)
 140
 141 full_internal = MakeCylinder(full_center, cyl_dir, cyl_radius          , full_dz)
 142 full_external = MakeCylinder(full_center, cyl_dir, cyl_radius+cyl_thick, full_dz)
 143 full_median   = MakeCut(full_external, full_internal)
 144
 145 # Boolean operations
 146 # ------------------
 147
 148 full = []
 149
 150 full.append(   MakeCut(full_solid_1, full_external))
 151 full.append(MakeCommon(full_solid_1, full_median))
 152
 153 full.append(   MakeCut(full_solid_2, full_external))
 154 full.append(MakeCommon(full_solid_2, full_median ))
 155
 156 full.append(   MakeCut(full_solid_3, full_external))
 157 full.append(MakeCommon(full_solid_3, full_median))
 158
 159 full.append(   MakeCut(full_solid_4, full_external))
 160 full.append(MakeCommon(full_solid_4, full_median))
 161
 162 # Filling the hole
 163 # ----------------
 164
 165 box_d = cyl_radius/3
 166
 167 x = cyl_x-box_d
 168 y = x * cyl_y / cyl_x
 169 box_point_11 = MakeVertex(x, y, cyl_dz)
 170
 171 x = cyl_x+box_d
 172 y = (box_dx - x) * cyl_y / (box_dx - cyl_x)
 173 box_point_12 = MakeVertex(x, y, cyl_dz)
 174
 175 x = cyl_x-box_d
 176 y = box_dy - x * (box_dy - cyl_y) / cyl_x
 177 box_point_21 = MakeVertex(x, y, cyl_dz)
 178
 179 x = cyl_x+box_d
 180 y = box_dy - (box_dx - x) * (box_dy - cyl_y) / (box_dx - cyl_x)
 181 box_point_22 = MakeVertex(x, y, cyl_dz)
 182
 183 box_face = MakeQuad4Vertices(box_point_11, box_point_12, box_point_21, box_point_22)
 184
 185 box = MakePrismVecH(box_face, cyl_dir, full_dz)
 186
 187 full.append(box)
 188
 189 full.append(MakeCut(MakeCommon(full_solid_1, full_internal), box))
 190 full.append(MakeCut(MakeCommon(full_solid_2, full_internal), box))
 191 full.append(MakeCut(MakeCommon(full_solid_3, full_internal), box))
 192 full.append(MakeCut(MakeCommon(full_solid_4, full_internal), box))
 193
 194 # Cut the cylinder thikness
 195 # -------------------------
 196
 197 full_plan = MakePlane(MakeVertex(0, 0, cyl_dz+cyl_thick), cyl_dir, 5000)
 198
 199 full_parts = MakePartition(full, [full_plan], [], [], ShapeType["SOLID"])
 200
 201 # Geometry result
 202 # ---------------
 203
 204 blocks.append(full_parts)
 205
 206 piece_cpd = MakeCompound(blocks)
 207
 208 piece_ok = RemoveExtraEdges(piece_cpd)
 209
 210 piece = MakeGlueFaces(piece_ok, 1.e-3)
 211
 212 piece_id = addToStudy(piece, "ex13_hole1partial")
 213
 214 # Meshing
 215 # =======
 216
 217 # Create a mesh
 218 # -------------
 219
 220 hexa = smesh.Mesh(piece, "ex13_hole1partial:hexa")
 221
 222 algo = hexa.Segment()
 223 algo.NumberOfSegments(2)
 224
 225 hexa.Quadrangle()
 226
 227 hexa.Hexahedron()
 228
 229 # Local hypothesis
 230 # ----------------
 231
 232 def local(x, y, z, d):
 233     edge = GetEdgeNearPoint(piece, MakeVertex(x, y, z))
 234     algo = hexa.Segment(edge)
 235     algo.NumberOfSegments(d)
 236     algo.Propagation()
 237
 238 local(0, 0, 100, 40)
 239 local(0, 0, 700, 15)
 240
 241 local(100, 0, 0, 20)
 242 local(0, 100, 0, 20)
 243
 244 local(100, 100, 0, 25)
 245
 246 d = cyl_radius-3*cyl_thick
 247 local(cyl_x+d, cyl_y+d, box_dz, 10)
 248
 249 # Compute the mesh
 250 # ----------------
 251
 252 hexa.Compute()