src/SMESH_SWIG/ex09_grid4build.py

   1 #  Copyright (C) 2005  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
   2 #  CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
   3 #
   4 #  This library is free software; you can redistribute it and/or
   5 #  modify it under the terms of the GNU Lesser General Public
   6 #  License as published by the Free Software Foundation; either
   7 #  version 2.1 of the License.
   8 #
   9 #  This library is distributed in the hope that it will be useful,
  10 #  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 #  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 #  Lesser General Public License for more details.
  13 #
  14 #  You should have received a copy of the GNU Lesser General Public
  15 #  License along with this library; if not, write to the Free Software
  16 #  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  17 #
  18 #  See http://www.salome-platform.org/
  19 #
  20 # CEA/LGLS 2004-2005, Francis KLOSS (OCC)
  21 # =======================================
  22
  23 from geompy import *
  24
  25 import smesh
  26
  27 import math
  28
  29 # Geometry
  30 # ========
  31
  32 # Element of a grid compound by a square with a cylinder on each vertex build by points, edges, faces and solids
  33
  34 # Values
  35 # ------
  36
  37 ox = 0
  38 oy = 0
  39 oz = 0
  40
  41 arete   =  50
  42 hauteur = 100
  43
  44 rayon = 10
  45
  46 demi = rayon/2
  47 r3   = demi*math.sqrt(3)
  48
  49 # Points
  50 # ------
  51
  52 piecePoint111 = MakeVertex(ox+rayon      , oy, oz)
  53 piecePoint211 = MakeVertex(ox+arete-rayon, oy, oz)
  54 piecePoint112 = MakeVertex(ox            , oy, oz+rayon)
  55 piecePoint212 = MakeVertex(ox+arete      , oy, oz+rayon)
  56 piecePoint113 = MakeVertex(ox            , oy, oz+arete-rayon)
  57 piecePoint213 = MakeVertex(ox+arete      , oy, oz+arete-rayon)
  58 piecePoint114 = MakeVertex(ox+rayon      , oy, oz+arete)
  59 piecePoint214 = MakeVertex(ox+arete-rayon, oy, oz+arete)
  60
  61 pieceCenter1  = MakeVertex(ox            , oy, oz)
  62 pieceCenter2  = MakeVertex(ox+arete      , oy, oz)
  63 pieceCenter3  = MakeVertex(ox            , oy, oz+arete)
  64 pieceCenter4  = MakeVertex(ox+arete      , oy, oz+arete)
  65
  66 piecePass1    = MakeVertex(ox+demi       , oy, oz+r3)
  67 piecePass2    = MakeVertex(ox+arete-demi , oy, oz+r3)
  68 piecePass3    = MakeVertex(ox+arete-demi , oy, oz+arete-r3)
  69 piecePass4    = MakeVertex(ox+demi       , oy, oz+arete-r3)
  70
  71 # Edges
  72 # -----
  73
  74 pieceEdgeSquare1   = MakeEdge(piecePoint111, piecePoint211)
  75 pieceEdgeSquare2   = MakeEdge(piecePoint114, piecePoint214)
  76 pieceEdgeSquare3   = MakeEdge(piecePoint112, piecePoint113)
  77 pieceEdgeSquare4   = MakeEdge(piecePoint212, piecePoint213)
  78
  79 pieceEdgeDiagonal1 = MakeEdge(piecePoint111, piecePoint213)
  80 pieceEdgeDiagonal2 = MakeEdge(piecePoint112, piecePoint214)
  81
  82 pieceEdgeArc1 = MakeArc(piecePoint111, piecePass1, piecePoint112)
  83 pieceEdgeArc2 = MakeArc(piecePoint211, piecePass2, piecePoint212)
  84 pieceEdgeArc3 = MakeArc(piecePoint213, piecePass3, piecePoint214)
  85 pieceEdgeArc4 = MakeArc(piecePoint113, piecePass4, piecePoint114)
  86
  87 # Faces
  88 # -----
  89
  90 pieceFace1 = MakeQuad(pieceEdgeSquare1, pieceEdgeArc2, pieceEdgeSquare4, pieceEdgeDiagonal1)
  91 pieceFace2 = MakeQuad(pieceEdgeSquare2, pieceEdgeArc4, pieceEdgeSquare3, pieceEdgeDiagonal2)
  92
  93 pieceFace3 = MakeQuad(pieceEdgeArc1, pieceEdgeDiagonal1, pieceEdgeArc3, pieceEdgeDiagonal2)
  94
  95 # Solids
  96 # ------
  97
  98 pieceVector = MakeVectorDXDYDZ(0, 1, 0)
  99
 100 pieceSolid1 = MakePrismVecH(pieceFace1, pieceVector, hauteur)
 101 pieceSolid2 = MakePrismVecH(pieceFace2, pieceVector, hauteur)
 102 pieceSolid3 = MakePrismVecH(pieceFace3, pieceVector, hauteur)
 103
 104 # Compound and glue
 105 # -----------------
 106
 107 c_cpd = MakeCompound([pieceSolid1, pieceSolid2, pieceSolid3])
 108
 109 piece = MakeGlueFaces(c_cpd, 1.e-5)
 110
 111 # Add in study
 112 # ------------
 113
 114 piece_id = addToStudy(piece, "ex09_grid4build")
 115
 116 # Meshing
 117 # =======
 118
 119 # Create a hexahedral mesh
 120 # ------------------------
 121
 122 hexa = smesh.Mesh(piece, "ex09_grid4build:hexa")
 123
 124 algo = hexa.Segment()
 125 algo.NumberOfSegments(6)
 126
 127 hexa.Quadrangle()
 128
 129 hexa.Hexahedron()
 130
 131 # Mesh calculus
 132 # -------------
 133
 134 hexa.Compute()