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######################################################## |
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# |
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# Copyright (c) 2003-2012 by University of Queensland |
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# Earth Systems Science Computational Center (ESSCC) |
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# http://www.uq.edu.au/esscc |
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# |
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# Primary Business: Queensland, Australia |
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# Licensed under the Open Software License version 3.0 |
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# http://www.opensource.org/licenses/osl-3.0.php |
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# |
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######################################################## |
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|
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__copyright__="""Copyright (c) 2003-2012 by University of Queensland |
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Earth Systems Science Computational Center (ESSCC) |
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http://www.uq.edu.au/esscc |
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Primary Business: Queensland, Australia""" |
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__license__="""Licensed under the Open Software License version 3.0 |
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http://www.opensource.org/licenses/osl-3.0.php""" |
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__url__="https://launchpad.net/escript-finley" |
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|
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""" |
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Template for the Design which defines regions and features |
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for a mesh generator. |
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|
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:var __author__: name of author |
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:var __copyright__: copyrights |
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:var __license__: licence agreement |
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:var __url__: url entry point on documentation |
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:var __version__: version |
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:var __date__: date of the version |
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""" |
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|
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__author__="Lutz Gross, l.gross@uq.edu.au" |
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|
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from .primitives import Primitive, ReversePrimitive, PropertySet, Point, Manifold1D, Manifold2D, Manifold3D |
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from xml.dom import minidom |
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import tempfile, os |
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|
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class TagMap(object): |
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""" |
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A class that allows to map tags to names. |
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|
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Example:: |
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|
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tm=TagMap({5 : x }) |
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tm.setMap(a=1,x=4) |
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assert tm.getTags("a") == [ 1 ] |
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assert tm.getTags("x") == [ 5, 4 ] |
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assert tm.map(x=10., a=20.) == { 5 : 10, 4: 10, 1 : 20 } |
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|
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""" |
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def __init__(self, mapping={}): |
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""" |
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Initializes the mapping. ``mapping`` defines an initial mapping from tag |
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to a name. |
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""" |
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self.__mapping={} |
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for tag, name in list(mapping.items()): |
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if not isinstance(tag, int): |
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raise TypeError("tag needs to be an int") |
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if not isinstance(name, str): |
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raise TypeError("name needs to be a str.") |
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self.__mapping[tag]=name |
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|
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def setMap(self,**kwargs): |
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""" |
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Sets a new map where <name>=<tag> assigns the tag <tag> to name <name>. |
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<tag> has to be an integer. If <tag> has been assigned to a name before |
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the mapping will be overwritten. Otherwise a new mapping <tag> -> <name> |
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is set. Notice that a single name can be assigned to different tags. |
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""" |
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for name, tag in list(kwargs.items()): |
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if not isinstance(tag, int): |
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raise TypeError("tag needs to be an int") |
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self.__mapping[tag]=name |
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|
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def getTags(self,name=None): |
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""" |
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Returns a list of the tags assigned to ``name``. If name is not present |
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a list of all tags is returned. |
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""" |
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if name == None: |
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out=list(self.__mapping.keys()) |
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else: |
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out=[] |
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for tag, arg in list(self.__mapping.items()): |
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if arg == name: out.append(tag) |
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return out |
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|
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def getName(self,tag=None): |
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""" |
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Returns the name of a tag. If ``tag`` is not present a list of all names |
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is returned. |
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""" |
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if tag == None: |
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return list(set(self.__mapping.values())) |
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else: |
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return self.__mapping[tag] |
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|
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def getMapping(self): |
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""" |
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Returns a dictionary where the tags define the keys and the values the |
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corresponding names. |
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""" |
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return self.__mapping |
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|
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def map(self,default=0,**kwargs): |
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""" |
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Returns a dictionary where the tags define the keys and the values give |
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the values assigned to the tag via name and kwargs:: |
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|
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tm=TagMap(x=5) |
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tm.setMap(a=1,x=4) |
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print tm.map(x=10., a=20.) |
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{ 5 : 10, 4: 10, 1 : 20 } |
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|
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The default is used for tags which map onto name with unspecified |
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values. |
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""" |
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out={} |
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for tag in self.__mapping: |
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if self.__mapping[tag] in kwargs: |
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out[tag]=kwargs[self.__mapping[tag]] |
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else: |
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out[tag]=default |
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return out |
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|
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def insert(self,data,default=0,**kwargs): |
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""" |
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Inserts values into the `esys.escript.Data` object according to the |
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given values assigned to the keywords. The default is used for tags |
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which map onto name with unspecified values. |
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""" |
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d=self.map(default=default,**kwargs) |
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for t,v in list(d.items()): |
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data.setTaggedValue(t,v) |
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|
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def passToDomain(self,domain): |
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""" |
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Passes the tag map to the `esys.escript.Domain` ``domain``. |
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""" |
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for tag, name in list(self.__mapping.items()): |
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print("Tag",name, "is mapped to id ", tag) |
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domain.setTagMap(name,tag) |
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|
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def toDOM(self,dom): |
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""" |
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Adds object to ``dom``. |
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""" |
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tm=dom.createElement("TagMap") |
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dom.appendChild(tm) |
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for tag,name in list(self.getMapping().items()): |
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item_dom=dom.createElement("map") |
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tag_dom=dom.createElement("tag") |
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name_dom=dom.createElement("name") |
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tag_dom.appendChild(dom.createTextNode(str(tag))) |
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name_dom.appendChild(dom.createTextNode(str(name))) |
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item_dom.appendChild(tag_dom) |
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item_dom.appendChild(name_dom) |
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tm.appendChild(item_dom) |
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return tm |
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|
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def fromDom(self,node): |
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""" |
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Fills names and tags from dom ``node``. |
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""" |
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for node in node.childNodes: |
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if isinstance(node, minidom.Element): |
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if node.tagName == 'map': |
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tag=int(node.getElementsByTagName("tag")[0].firstChild.nodeValue.strip()) |
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name=str(node.getElementsByTagName("name")[0].firstChild.nodeValue.strip()) |
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self.setMap(**{ name : tag }) |
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return |
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|
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def fillFromXML(self,iostream): |
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""" |
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Uses the XML file or string to set the mapping. |
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""" |
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if isinstance(iostream,str): |
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dom=minidom.parseString(iostream) |
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else: |
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dom=minidom.parse(iostream) |
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root=dom.getElementsByTagName('ESys')[0] |
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for node in root.childNodes: |
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if isinstance(node, minidom.Element): |
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if node.tagName == 'TagMap': |
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self.fromDom(node) |
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return |
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|
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def writeXML(self,iostream=None): |
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""" |
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Serializes self as XML into ``iostream`` or if not present returns the |
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XML as string. |
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""" |
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dom=minidom.Document() |
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esys=dom.createElement('ESys') |
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esys.appendChild(self.toDOM(dom)) |
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dom.appendChild(esys) |
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if iostream == None: |
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return dom.toprettyxml() |
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else: |
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iostream.write(dom.toprettyxml()) |
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|
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class Design(object): |
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""" |
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Template for a design which defines the input for a mesh generator. |
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|
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:cvar GMSH: U{gmsh<http://www.geuz.org/gmsh/>} file formatt |
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:cvar IDEAS: U{I_DEAS<http://www.plm.automation.siemens.com/en_us/products/nx/>} universal file format |
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:cvar VRML: U{VRML<http://www.w3.org/MarkUp/VRML/>} file format |
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:cvar STL: U{STL<http://en.wikipedia.org/wiki/STL_(file_format)>} file format |
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:cvar NASTRAN: U{Nastran<http://simcompanion.mscsoftware.com/infocenter/index?page=content&channel=DOCUMENTATION>} bulk data format |
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:cvar MEDIT: U{Medit<http://www-rocq.inria.fr/OpenFEM/Doc/>} file format |
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:cvar CGNS: U{CGNS<http://cgns.sourceforge.net/>} file format |
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:cvar PLOT3D: U{Plot3D<http://www.plot3d.net/>} file format |
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:cvar DIFFPACK: U{Diffpack<http://www.diffpack.com/>} file format |
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""" |
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GMSH="msh" |
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IDEAS="unv" |
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VRML="vrml" |
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STL="stl" |
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NASTRAN="bdf" |
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MEDIT="mesh" |
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CGNS="cgns" |
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PLOT3D="p3d" |
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DIFFPACK="diff" |
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def __init__(self,dim=3,element_size=1.,order=1,keep_files=False): |
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""" |
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Initializes a design. |
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|
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:param dim: spatial dimension |
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:param element_size: global element size |
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:param order: element order |
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:param keep_files: flag to keep work files |
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""" |
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self.clearItems() |
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self.setElementSize(element_size) |
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self.setDim(dim) |
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self.setElementOrder(order) |
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self.setFileFormat() |
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if keep_files: |
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self.setKeepFilesOn() |
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else: |
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self.setKeepFilesOff() |
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self.__mshname="" |
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self.setMeshFileName() |
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|
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def setDim(self,dim=3): |
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""" |
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Sets the spatial dimension. |
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""" |
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if not dim in [1,2,3]: |
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raise ValueError("only dimension 1, 2, 3 are supported.") |
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self.__dim=dim |
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|
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def getDim(self,dim=3): |
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""" |
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Returns the spatial dimension. |
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""" |
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return self.__dim |
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|
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def setElementOrder(self,order=1): |
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""" |
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Sets the element order. |
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""" |
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if not order in [1,2]: |
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raise ValueError("only element order 1 or 2 is supported.") |
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self.__order=order |
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|
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def getElementOrder(self): |
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""" |
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Returns the element order. |
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""" |
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return self.__order |
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|
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def setElementSize(self,element_size=1.): |
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""" |
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Sets the global element size. |
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""" |
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if element_size<=0.: |
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raise ValueError("element size needs to be positive.") |
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self.__element_size=element_size |
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|
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def getElementSize(self): |
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""" |
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Returns the global element size. |
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""" |
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return self.__element_size |
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|
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def setKeepFilesOn(self): |
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""" |
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Work files are kept at the end of the generation. |
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""" |
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self.__keep_files=True |
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|
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def setKeepFilesOff(self): |
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""" |
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Work files are deleted at the end of the generation |
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""" |
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self.__keep_files=False |
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|
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def keepFiles(self): |
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""" |
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Returns True if work files are kept, False otherwise. |
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""" |
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return self.__keep_files |
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|
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def addItems(self,*items): |
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""" |
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Adds items to the design. |
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""" |
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new_items=[] |
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for i in range(len(items)): |
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if not isinstance(items[i],(Primitive, ReversePrimitive)): |
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raise TypeError("%s-th argument is not a Primitive object"%i) |
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if isinstance(items[i],PropertySet): |
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q=items[i] |
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else: |
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q=PropertySet("__%s__"%(items[i].getID()), items[i]) |
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for p in self.getAllPrimitives(): |
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if isinstance(p, PropertySet): |
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if q.getName() == p.getName(): |
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raise ValueError("Property set name %s is allready in use."%q.getName()) |
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new_items.append(q) |
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for q in new_items: self.__items.append(q) |
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|
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def getItems(self): |
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""" |
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Returns a list of the items used in the design. |
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""" |
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return self.__items |
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|
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def clearItems(self): |
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""" |
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Removes all items from the design. |
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""" |
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self.__items=[] |
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|
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def getAllPrimitives(self): |
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""" |
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Returns a list of all primitives used to create the design. |
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Each primitive appears once. The primitives are ordered by their |
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order of generation. |
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""" |
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prims=[] |
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for i in self.getItems(): |
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for p in i.getPrimitives(): |
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if not p in prims: prims.append(p) |
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prims.sort() |
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return prims |
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|
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def setOptions(self,**kwargs): |
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""" |
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Sets options of the mesh generator. |
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|
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:note: this method is typically overwritten by a particular design |
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implementation. |
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""" |
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pass |
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def generate(self): |
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""" |
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generate output file |
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|
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:note: this method may be overwritten by a particular design |
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implementation. |
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""" |
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self.getMeshHandler() |
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|
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def getMeshHandler(self): |
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""" |
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Returns a handle to a mesh meshing the design. |
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|
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:note: this method has to be overwritten by a particular design |
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implementation. |
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""" |
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raise NotImplementedError() |
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|
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def getTagMap(self): |
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""" |
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Returns a `TagMap` to map the names of `PropertySet` s to tags. |
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""" |
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m={} |
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for p in self.getAllPrimitives(): |
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if isinstance(p, PropertySet): m[ p.getTag() ] = p.getName() |
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return TagMap(m) |
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|
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def setFileFormat(self,format='msh'): |
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""" |
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Sets the file format to be used. |
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|
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:param format: format to be used. needs to be one of |
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|
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""" |
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if not format in [ self.GMSH, self.IDEAS, self.VRML, self.STL, self.NASTRAN, self.MEDIT, self.CGNS, self.PLOT3D, self.DIFFPACK] : |
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raise ValueError("unknown file format %s."%format) |
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self.__fileformat=format |
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|
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def getFileFormat(self): |
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""" |
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Returns the file format |
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""" |
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return self.__fileformat |
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|
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def setMeshFileName(self, name=None): |
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""" |
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Sets the name for the mesh file. If no name is given a name is generated. |
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""" |
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if self.__mshname: |
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os.unlink(self.__mshname) |
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if name == None: |
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self.__mshname_set=False |
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tmp_f_id=tempfile.mkstemp(suffix="."+self.getFileFormat()) |
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self.__mshname=tmp_f_id[1] |
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os.close(tmp_f_id[0]) |
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else: |
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self.__mshname=name |
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self.__mshname_set=True |
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|
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def getMeshFileName(self): |
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""" |
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Returns the name of the mesh file. |
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""" |
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return self.__mshname |
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|
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|
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