/[escript]/trunk/pycad/examples/trapezoid.py
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Contents of /trunk/pycad/examples/trapezoid.py

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Revision 1809 - (show annotations)
Thu Sep 25 06:43:44 2008 UTC (12 years, 7 months ago) by ksteube
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Copyright updated in all python files

1
2 ########################################################
3 #
4 # Copyright (c) 2003-2008 by University of Queensland
5 # Earth Systems Science Computational Center (ESSCC)
6 # http://www.uq.edu.au/esscc
7 #
8 # Primary Business: Queensland, Australia
9 # Licensed under the Open Software License version 3.0
10 # http://www.opensource.org/licenses/osl-3.0.php
11 #
12 ########################################################
13
14 __copyright__="""Copyright (c) 2003-2008 by University of Queensland
15 Earth Systems Science Computational Center (ESSCC)
16 http://www.uq.edu.au/esscc
17 Primary Business: Queensland, Australia"""
18 __license__="""Licensed under the Open Software License version 3.0
19 http://www.opensource.org/licenses/osl-3.0.php"""
20 __url__="http://www.uq.edu.au/esscc/escript-finley"
21
22 """
23 a trapezoid with a cutout
24
25 @var __author__: Ken Steube
26 @var __url__: http://www.iservo.edu.au/esys/escript
27 @var __date__: 26 March 2007
28 """
29
30 from esys.pycad import *
31 from esys.pycad.gmsh import Design
32 from esys.finley import MakeDomain
33
34 # A trapezoid
35 p0=Point(0.0, 0.0, 0.0)
36 p1=Point(1.0, 0.0, 0.0)
37 p2=Point(1.0, 0.5, 0.0)
38 p3=Point(0.0, 1.0, 0.0)
39 l01=Line(p0, p1)
40 l12=Line(p1, p2)
41 l23=Line(p2, p3)
42 l30=Line(p3, p0)
43 c=CurveLoop(l01, l12, l23, l30)
44
45 # A small triangular cutout
46 x0=Point(0.1, 0.1, 0.0)
47 x1=Point(0.5, 0.1, 0.0)
48 x2=Point(0.5, 0.2, 0.0)
49 x01=Line(x0, x1)
50 x12=Line(x1, x2)
51 x20=Line(x2, x0)
52 cutout=CurveLoop(x01, x12, x20)
53
54 # Create the surface with cutout
55 s=PlaneSurface(c, holes=[cutout])
56
57 # Create a Design which can make the mesh
58 d=Design(dim=2, element_size=0.05)
59
60 # Add the trapezoid with cutout
61 d.addItems(s)
62
63 # Create the geometry, mesh and Escript domain
64 d.setScriptFileName("trapezoid.geo")
65 d.setMeshFileName("trapezoid.msh")
66 domain=MakeDomain(d, integrationOrder=-1, reducedIntegrationOrder=-1, optimizeLabeling=True)
67
68 # Create a file that can be read back in to python with mesh=ReadMesh(fileName)
69 domain.write("trapezoid.fly")
70

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