+++ /dev/null
-# -*- coding: iso-8859-1 -*-
-# Copyright (C) 2007-2016 CEA/DEN, EDF R&D, OPEN CASCADE
-#
-# 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
-# version 2.1 of the License, or (at your option) any later version.
-#
-# 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.
-#
-# 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
-#
-# See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
-#
-
-# =======================================
-# Procedure that take a triangulation and split all triangles in 4 others triangles
-#
-import salome
-salome.salome_init()
-import GEOM
-from salome.geom import geomBuilder
-geompy = geomBuilder.New(salome.myStudy)
-
-import SMESH, SALOMEDS
-from salome.smesh import smeshBuilder
-smesh = smeshBuilder.New(salome.myStudy)
-
-import os
-
-# Values
-# ------
-
-# Path for ".med" files
-path = "/tmp/ex29_%s_" % os.getenv('USER','unknown')
-
-# Name of the shape and the mesh
-name = "Carre"
-
-# Add a node and needed edges
-# ---------------------------
-
-def node(m, f, n1, n2, lnv):
- x1, y1, z1 = m.GetNodeXYZ(n1)
- x2, y2, z2 = m.GetNodeXYZ(n2)
-
- x = (x1 + x2) / 2.0
- y = (y1 + y2) / 2.0
- z = (z1 + z2) / 2.0
-
- i = m.AddNode(x, y, z)
-
- in1 = m.GetShapeID(n1)
- in2 = m.GetShapeID(n2)
-
- if (in1==f) or (in2==f):
- m.SetNodeOnFace(i, f, 0, 0)
-
- else:
- e1 = m.AddEdge([ n1, i ])
- e2 = m.AddEdge([ i , n2 ])
-
- if n1 in lnv:
- e = in2
- else:
- e = in1
-
- m.SetMeshElementOnShape(e1, e)
- m.SetMeshElementOnShape(e2, e)
- m.SetNodeOnEdge(i, e, 0)
-
- return i
-
-# Add a triangle and associate to the CAD face
-# --------------------------------------------
-
-def triangle(m, f, n1, n2, n3):
- i = m.AddFace([ n1, n2, n3 ])
- m.SetMeshElementOnShape(i, f)
-
-# Split all triangles in 4 triangles
-# ----------------------------------
-
-def SplitTrianglesIn4(m):
- # Get all triangles
- triangles = m.GetElementsByType(SMESH.FACE)
-
- # Remove all edges
- m.RemoveElements(m.GetElementsByType(SMESH.EDGE))
-
- # Get the list of nodes (ids) associated with the CAD vertices
- shape = m.GetShape()
- lnv = []
- for v in geompy.SubShapeAll(shape, geompy.ShapeType["VERTEX"]):
- lnv = lnv + m.GetSubMeshNodesId(v, True)
-
- # Split every triangle
- for t in triangles:
- noeud_1, noeud_2, noeud_3 = m.GetElemNodes(t)
-
- face = m.GetShapeIDForElem(t)
-
- noeud_12 = node(m, face, noeud_1, noeud_2, lnv)
- noeud_23 = node(m, face, noeud_2, noeud_3, lnv)
- noeud_13 = node(m, face, noeud_1, noeud_3, lnv)
-
- triangle(m, face, noeud_1 , noeud_12, noeud_13)
- triangle(m, face, noeud_2 , noeud_23, noeud_12)
- triangle(m, face, noeud_3 , noeud_13, noeud_23)
- triangle(m, face, noeud_12, noeud_23, noeud_13)
-
- # Remove all initial triangles
- m.RemoveElements(triangles)
-
- # Merge all identical nodes
- m.MergeNodes(m.FindCoincidentNodes(0.0001))
-
-# Build a CAD square
-# ------------------
-
-x0 = 0.0 ; y0 = 0.0 ; z0 = 0.0
-x1 = 1.0 ; y1 = 0.0 ; z1 = 0.0
-x2 = 1.0 ; y2 = 1.0 ; z2 = 0.0
-x3 = 0.0 ; y3 = 1.0 ; z3 = 0.0
-
-P0 = geompy.MakeVertex(x0, y0, z0)
-P1 = geompy.MakeVertex(x1, y1, z1)
-P2 = geompy.MakeVertex(x2, y2, z2)
-P3 = geompy.MakeVertex(x3, y3, z3)
-
-square = geompy.MakeQuad4Vertices(P0, P1, P2, P3)
-geompy.addToStudy(square, name)
-
-# Refine edges and create group of mesh
-# -------------------------------------
-
-def refine(m, p1, p2, n, k, name):
- s = m.GetShape()
-
- g = geompy.CreateGroup(s, geompy.ShapeType["EDGE"])
- e = geompy.GetEdge(s, p1, p2)
- i = geompy.GetSubShapeID(s, e)
- geompy.AddObject(g, i)
- m.Group(g, name)
-
- a = m.Segment(e)
- a.NumberOfSegments(n, k)
-
-# Mesh the square
-# ---------------
-
-MyMesh = smesh.Mesh(square)
-
-refine(MyMesh, P1, P2, 8, 7, "Droite")
-refine(MyMesh, P3, P0, 9, 10, "Gauche")
-refine(MyMesh, P0, P1, 7, 9, "Bas" )
-refine(MyMesh, P2, P3, 12, 14, "Haut" )
-
-algo2D = MyMesh.Triangle()
-algo2D.MaxElementArea(0.07)
-
-MyMesh.Compute()
-
-MyMesh.ExportMED(path+"110_triangles.med", 0)
-
-# Disturb the mesh
-# ----------------
-
-MyMesh.MoveNode( 37, 0.05 , 0.368967 , 0 )
-MyMesh.MoveNode( 38, 0.34 , 0.0762294, 0 )
-MyMesh.MoveNode( 40, 0.8 , 0.42 , 0 )
-MyMesh.MoveNode( 42, 0.702662, 0.74 , 0 )
-MyMesh.MoveNode( 46, 0.4 , 0.374656 , 0 )
-MyMesh.MoveNode( 47, 0.13 , 0.63 , 0 )
-MyMesh.MoveNode( 49, 0.222187, 0.3 , 0 )
-MyMesh.MoveNode( 54, 0.557791, 0.05 , 0 )
-MyMesh.MoveNode( 55, 0.7 , 0.2 , 0 )
-MyMesh.MoveNode( 56, 0.73 , 0.52 , 0 )
-MyMesh.MoveNode( 58, 0.313071, 0.31 , 0 )
-MyMesh.MoveNode( 59, 0.8 , 0.56 , 0 )
-MyMesh.MoveNode( 62, 0.592703, 0.95 , 0 )
-MyMesh.MoveNode( 63, 0.28 , 0.5 , 0 )
-MyMesh.MoveNode( 65, 0.49 , 0.93 , 0 )
-MyMesh.MoveNode( 68, 0.501038, 0.65 , 0 )
-MyMesh.MoveNode( 69, 0.37 , 0.63 , 0 )
-MyMesh.MoveNode( 70, 0.597025, 0.52 , 0 )
-MyMesh.MoveNode( 72, 0.899 , 0.878589 , 0 )
-MyMesh.MoveNode( 73, 0.92 , 0.85 , 0 )
-MyMesh.MoveNode( 74, 0.820851, 0.75 , 0 )
-
-NbCells1 = 110
-MyMesh.ExportMED(path+"110_triangles_2.med", 0)
-
-# First mesh refining
-# -------------------
-
-SplitTrianglesIn4(MyMesh)
-
-NbCells2 = NbCells1*4
-print("Mesh with "+str(NbCells2)+" cells computed.")
-
-MyMesh.ExportMED(path+str(NbCells2)+"_triangles.med", 0)
-
-# Second mesh refining
-# --------------------
-
-SplitTrianglesIn4(MyMesh)
-
-NbCells3 = NbCells2*4
-print("Mesh with "+str(NbCells3)+" cells computed.")
-
-MyMesh.ExportMED(path+str(NbCells3)+"_triangles.med",0)
-
-# Third mesh refining
-# -------------------
-
-SplitTrianglesIn4(MyMesh)
-
-NbCells4 = NbCells3*4
-print("Mesh with "+str(NbCells4)+" cells computed.")
-
-MyMesh.ExportMED(path+str(NbCells4)+"_triangles.med", 0)
-
-# Update the object browser
-# -------------------------
-
-salome.sg.updateObjBrowser(1)
