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# $Id:$ |
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|
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""" |
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template for the Design which defines a 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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|
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__author__="Lutz Gross, l.gross@uq.edu.au" |
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__copyright__=""" Copyright (c) 2007 by ACcESS MNRF |
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http://www.access.edu.au |
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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__="http://www.iservo.edu.au/esys/escript" |
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__version__="$Revision:$" |
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__date__="$Date:$" |
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|
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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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|
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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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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, map={}): |
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""" |
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initizlizes the mapping. map defines an initial mapping from tag to a name. |
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""" |
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for tag, name in map.items(): |
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if not isinstance(tag, int): |
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raise TypeError("tag needs to be 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.__map=map |
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def setMap(self,**kwargs): |
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""" |
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set a new map where <name>=<tag> assigns the tag <tag> to name <name>. <tag> has to be integer. |
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If <tag> has been assigned to a name before the mapping will be overwritten. Otherwise a new |
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mapping <tag> -> <name> 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 kwargs.items(): |
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if not isinstance(tag, int): |
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raise TypeError("tag needs to be int") |
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self.__map[tag]=name |
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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 |
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""" |
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if name == None: |
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out=self.__map.keys() |
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else: |
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out=[] |
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for tag, arg in self.__map.items(): |
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if arg == name: out.append(tag) |
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return out |
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def getName(self,tag): |
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""" |
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returns the name of a tag |
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""" |
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return self.__map[tag] |
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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 corresposnding names. |
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""" |
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return self.__map |
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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 the values assigned to the tag via name |
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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 values |
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""" |
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out={} |
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for tag in self.__map: |
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if kwargs.has_key(self.__map[tag]): |
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out[tag]=kwargs[self.__map[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 L{esys.escript.Data} object according to the given values assigned to the keywords. |
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the default is used for tags 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 d.items(): |
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data.setTaggedValue(t,v) |
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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 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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def fromDom(self,node): |
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""" |
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fills 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,xml): |
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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(xml,str): |
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dom=minidom.parseString(xml) |
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else: |
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dom=minidom.parse(xml) |
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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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|
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|
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def writeXML(self,iostream=None): |
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""" |
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writes XML serialization into the iostream or if not present returns the 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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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: patial dimension |
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@element_size: global element size |
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@order: element order |
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@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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if keep_files: |
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self.setKeepFilesOn() |
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else: |
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self.setKeepFilesOff() |
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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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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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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 orser 1 or 2 is supported.") |
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self.__order=order |
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def getElementOrder(self,order=1): |
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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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def setElementSize(self,element_size=0.1): |
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""" |
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set 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 non--negative.") |
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self.__element_size=element_size |
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def getElementSize(self,element_size=1.): |
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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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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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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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def keepFiles(self): |
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""" |
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returns True if work files are kept |
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""" |
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return self.__keep_files |
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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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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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for i in items: |
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self.__items.append(i) |
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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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def clearItems(self): |
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""" |
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resets the items in design |
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""" |
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self.__items=[] |
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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 primitve appears once. The primitives are ordered by their |
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order of generation |
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""" |
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prims=set() |
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for i in self.getItems(): prims|=set(i.getPrimitives()) |
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prims=list(prims) |
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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 implementation |
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""" |
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pass |
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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 implementation |
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""" |
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raise NotImplementedError() |
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|
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def getPointTagMap(self): |
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""" |
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returns a L{TagMap} to map the name of L{Point} L{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): |
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if p.getDim() == 0: m[ p.getTag() ] = p.getName() |
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return TagMap(m) |
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def getCurveTagMap(self): |
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""" |
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returns a L{TagMap} to map the name of L{Manifold1D} L{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): |
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if p.getDim() == 1: m[ p.getTag() ] = p.getName() |
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return TagMap(m) |
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def getSurfaceTagMap(self): |
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""" |
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returns a L{TagMap} to map the name of L{Manifold2D} L{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): |
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if p.getDim() == 2: m[ p.getTag() ] = p.getName() |
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return TagMap(m) |
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def getVolumeTagMap(self): |
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""" |
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returns a L{TagMap} to map the name of L{Manifold3D} L{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): |
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if p.getDim() == 3: m[ p.getTag() ] = p.getName() |
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return TagMap(m) |
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