pycad/examples/trapezoid.py


########################################################
#
# Copyright (c) 2003-2008 by University of Queensland
# Earth Systems Science Computational Center (ESSCC)
# http://www.uq.edu.au/esscc
#
# Primary Business: Queensland, Australia
# Licensed under the Open Software License version 3.0
# http://www.opensource.org/licenses/osl-3.0.php
#
########################################################

__copyright__="""Copyright (c) 2003-2008 by University of Queensland
Earth Systems Science Computational Center (ESSCC)
http://www.uq.edu.au/esscc
Primary Business: Queensland, Australia"""
__license__="""Licensed under the Open Software License version 3.0
http://www.opensource.org/licenses/osl-3.0.php"""
__url__="http://www.uq.edu.au/esscc/escript-finley"

"""
a trapezoid with a cutout
 
"""

from esys.pycad import *
from esys.pycad.gmsh import Design
from esys.finley import MakeDomain

# A trapezoid
p0=Point(0.0, 0.0, 0.0)
p1=Point(1.0, 0.0, 0.0)
p2=Point(1.0, 0.5, 0.0)
p3=Point(0.0, 1.0, 0.0)
l01=Line(p0, p1)
l12=Line(p1, p2)
l23=Line(p2, p3)
l30=Line(p3, p0)
c=CurveLoop(l01, l12, l23, l30)

# A small triangular cutout
x0=Point(0.1, 0.1, 0.0)
x1=Point(0.5, 0.1, 0.0)
x2=Point(0.5, 0.2, 0.0)
x01=Line(x0, x1)
x12=Line(x1, x2)
x20=Line(x2, x0)
cutout=CurveLoop(x01, x12, x20)

# Create the surface with cutout
s=PlaneSurface(c, holes=[cutout])

# Create a Design which can make the mesh
d=Design(dim=2, element_size=0.05)

# Add the trapezoid with cutout
d.addItems(s)

# Create the geometry, mesh and Escript domain
d.setScriptFileName("trapezoid.geo")
d.setMeshFileName("trapezoid.msh")
domain=MakeDomain(d, integrationOrder=-1, reducedIntegrationOrder=-1, optimizeLabeling=True)

# Create a file that can be read back in to python with mesh=ReadMesh(fileName)
domain.write("trapezoid.fly")

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	"""
26
27	from esys.pycad import *
28	from esys.pycad.gmsh import Design
29	from esys.finley import MakeDomain
30
31	# A trapezoid
32	p0=Point(0.0, 0.0, 0.0)
33	p1=Point(1.0, 0.0, 0.0)
34	p2=Point(1.0, 0.5, 0.0)
35	p3=Point(0.0, 1.0, 0.0)
36	l01=Line(p0, p1)
37	l12=Line(p1, p2)
38	l23=Line(p2, p3)
39	l30=Line(p3, p0)
40	c=CurveLoop(l01, l12, l23, l30)
41
42	# A small triangular cutout
43	x0=Point(0.1, 0.1, 0.0)
44	x1=Point(0.5, 0.1, 0.0)
45	x2=Point(0.5, 0.2, 0.0)
46	x01=Line(x0, x1)
47	x12=Line(x1, x2)
48	x20=Line(x2, x0)
49	cutout=CurveLoop(x01, x12, x20)
50
51	# Create the surface with cutout
52	s=PlaneSurface(c, holes=[cutout])
53
54	# Create a Design which can make the mesh
55	d=Design(dim=2, element_size=0.05)
56
57	# Add the trapezoid with cutout
58	d.addItems(s)
59
60	# Create the geometry, mesh and Escript domain
61	d.setScriptFileName("trapezoid.geo")
62	d.setMeshFileName("trapezoid.msh")
63	domain=MakeDomain(d, integrationOrder=-1, reducedIntegrationOrder=-1, optimizeLabeling=True)
64
65	# Create a file that can be read back in to python with mesh=ReadMesh(fileName)
66	domain.write("trapezoid.fly")
67