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##############################################################################
#
# Copyright (c) 2003-2018 by The University of Queensland
# http://www.uq.edu.au
#
# Primary Business: Queensland, Australia
# Licensed under the Apache License, version 2.0
# http://www.apache.org/licenses/LICENSE-2.0
#
# Development until 2012 by Earth Systems Science Computational Center (ESSCC)
# Development 2012-2013 by School of Earth Sciences
# Development from 2014 by Centre for Geoscience Computing (GeoComp)
#
##############################################################################
from __future__ import print_function, division
__copyright__="""Copyright (c) 2003-2018 by The University of Queensland
http://www.uq.edu.au
Primary Business: Queensland, Australia"""
__license__="""Licensed under the Apache License, version 2.0
http://www.apache.org/licenses/LICENSE-2.0"""
__url__="https://launchpad.net/escript-finley"
"""
this script generates a variety of meshes in the fly format on a unit square with a
fixed number of elements NE (approximatively).
This script will not run under MPI.
generated file names are:
mesh_D<d>_o<O>_T<t>_Contacts<c>_Rich<r>.fly
wehere <d>= spatial dimension 2,3
<o>= order 1,2, 2F
<t>= element type = hex, tet
<c>= Yes if contact elements are present, No otherwise.
<r>= YEs is rich surface elements are used, No otherwise
any item with x[d]<CUT will be tagged with 1 the rest will be marked 100.
"""
MESH_DIRECTORY="./tmp_meshes"
NE=10
CUT=0.5
from esys.escript import *
from esys.finley import Rectangle, Brick, Merge, JoinFaces
from esys.pycad import Point, Line,PlaneSurface, CurveLoop, Volume,SurfaceLoop
from esys.pycad.gmsh import Design
from esys.finley import MakeDomain
from esys.weipa import saveVTK
import os
def getMesh(NE_X, NE_Y, t,d,o,fullOrder,r,l_X):
if t == "Hex":
if d == 2:
dom=Rectangle(n0=NE_X, n1=NE_Y, l0=l_X,order=o, useFullElementOrder=fullOrder,useElementsOnFace=r,optimize=True)
else:
Brick()
dom=Brick(n0=NE_X, n1=NE_Y, n2=NE_Y,l0=l_X,order=o, useFullElementOrder=fullOrder,useElementsOnFace=r,optimize=True)
else:
des=Design(dim=d, order=o, element_size =min(l_X/max(3,NE_X),1./max(3,NE_Y)), keep_files=True)
des.setScriptFileName("tester.geo")
if d == 2:
p0=Point(0.,0.)
p1=Point(l_X,0.)
p2=Point(l_X,1.)
p3=Point(0.,1.)
l01=Line(p0,p1)
l12=Line(p1,p2)
l23=Line(p2,p3)
l30=Line(p3,p0)
s=PlaneSurface(CurveLoop(l01,l12,l23,l30))
des.addItems(s,l01,l12,l23,l30)
else:
p000=Point( 0.,0.,0.)
p100=Point(l_X,0.,0.)
p010=Point(0.,1.,0.)
p110=Point(l_X,1.,0.)
p001=Point(0.,0.,1.)
p101=Point(l_X,0.,1.)
p011=Point(0.,1.,1.)
p111=Point(l_X,1.,1.)
l10=Line(p000,p100)
l20=Line(p100,p110)
l30=Line(p110,p010)
l40=Line(p010,p000)
l11=Line(p000,p001)
l21=Line(p100,p101)
l31=Line(p110,p111)
l41=Line(p010,p011)
l12=Line(p001,p101)
l22=Line(p101,p111)
l32=Line(p111,p011)
l42=Line(p011,p001)
bottom=PlaneSurface(-CurveLoop(l10,l20,l30,l40))
top=PlaneSurface(CurveLoop(l12,l22,l32,l42))
front=PlaneSurface(CurveLoop(l10,l21,-l12,-l11))
back=PlaneSurface(CurveLoop(l30,l41,-l32,-l31))
left=PlaneSurface(CurveLoop(l11,-l42,-l41,l40))
right=PlaneSurface(CurveLoop(-l21,l20,l31,-l22))
vol=Volume(SurfaceLoop(bottom,top,front,back,left,right))
des.addItems(vol)
dom=MakeDomain(des)
return dom
# test if out put dir exists:
if not os.path.isdir(MESH_DIRECTORY): os.mkdir(MESH_DIRECTORY)
for d in [2,3]:
for o in ["1", "2", "2F"]:
for t in [ "Hex", "Tet" ]:
for c in ["Yes", "No"]:
for r in ["Yes", "No"]:
filename="mesh_D%s_o%s_T%s_Contacts%s_Rich%s.fly"%(d,o,t,c,r)
# certain cases are excluded:
if ( o == "2F" and t == "Tet" ) or \
( t == "Tet" and r == "Yes" ) or \
( o == "2F" and r == "Yes" ) :
pass
else:
print("generate file ",filename)
if c == "Yes":
NE_X=int(NE**(1./d)/2+0.5)
NE_Y=int(NE**(1./d)+0.5)
else:
NE_X=int(NE**(1./d)+0.5)
NE_Y=NE_X
print(filename)
print("generating ",NE_X, NE_Y)
if o == "2":
o2=2
full=False
elif o == "2F":
o2=2
full=True
else:
o2=1
full=False
if c == "Yes":
dom1=getMesh(NE_X, NE_Y,t,d,o2,full,r=="Yes",0.5)
dom2=getMesh(NE_X, NE_Y,t,d,o2,full,r=="Yes",0.5)
x=dom2.getX().copy()
x[0]=1.-x[0]
dom2.setX(x)
dom=JoinFaces([dom1,dom2])
else:
dom=getMesh(NE_X, NE_Y,t,d,o2,full,r=="Yes",1.)
# set tags:
for fs in [ContinuousFunction(dom), Function(dom), FunctionOnBoundary(dom), FunctionOnContactOne(dom)]:
m=whereNegative(fs.getX()[d-1]-CUT)
fs.getDomain().setTagMap('tag1',1)
fs.setTags('tag1',m)
fs.setTags(100,1-m)
dom.write(os.path.join(MESH_DIRECTORY,filename))
# saveVTK(os.path.join(MESH_DIRECTORY,filename+".vtu"),dom)
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