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# $Id$ |
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|
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__copyright__=""" Copyright (c) 2006 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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|
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|
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from esys.escript import * |
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from esys.escript.modelframe import Model,ParameterSet |
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from esys import finley |
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|
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class FinleyReader(ParameterSet): |
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""" |
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reads finley mesh file. |
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|
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@ivar source: mesh file in finley or gmsh format |
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@type source: C{DataSource} |
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@ivar intergrationOrder: integration order, default -1 (in). |
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@type intergrationOrder: C{int} |
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@ivar reducedIntegrationOrder: reduced integration order, default -1 (in). |
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@type reducedIntegrationOrder: C{int} |
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@ivar optimizeLabeling: switches on optimization of the labeling of the nodes |
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@type optimizeLabeling: C{bool} |
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""" |
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def __init__(self,**kwargs): |
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""" |
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initializes the object |
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""" |
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super(FinleyReader,self).__init__(**kwargs) |
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self.declareParameter(source="none", |
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optimizeLabeling=True, |
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reducedIntegrationOrder=-1, |
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integrationOrder=-1) |
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self.__domain=None |
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|
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def domain(self): |
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""" |
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returns the domain |
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|
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@return: the domain |
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@rtype: L{Domain} |
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""" |
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if self.__domain == None: |
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if self.source.fileformat == "fly": |
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self.__domain=finley.ReadMesh(self.source.getLocalFileName(),self.integrationOrder) |
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elif self.source.fileformat == "gmsh": |
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self.__domain=finley.ReadGmsh(self.source.getLocalFileName(),self.integrationOrder,self.reducedIntegrationOrder, self.optimizeLabeling) |
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else: |
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raise TypeError("unknown mesh file format %s."%self.source.fileformat) |
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self.trace("mesh read from %s"%self.source) |
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return self.__domain |
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|
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|
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class RectangularDomain(ParameterSet): |
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""" |
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Generates a mesh over a rectangular domain finley. |
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|
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@ivar dim: spatial dimension, default =2 (in). |
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@type dim: spatial dimension |
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@ivar l: spatial lengths, default [1.,1.,1.] (in). |
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@type l: C{list} of C{floats}s |
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@ivar n: number of elements, default [10,10,10] (in). |
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@type n: C{list} of C{int}s |
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@ivar order: element order, default 1 (in). |
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@type order: C{int} |
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@ivar periodic: flags for periodicity, default [False,False,False] (in). |
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@type periodic: C{list} of C{bool}s |
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@ivar intergrationOrder: integration order, default -1 (in). |
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@type intergrationOrder: C{int} |
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""" |
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def __init__(self,**kwargs): |
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""" |
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initializes the object |
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""" |
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super(RectangularDomain,self).__init__(**kwargs) |
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self.declareParameter(dim=2,\ |
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l=[1.,1.,1.],\ |
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n=[10,10,10], \ |
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order=1,\ |
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periodic=[False,False,False], |
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integrationOrder=-1) |
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self.__domain=None |
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|
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def domain(self): |
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""" |
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returns the domain |
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|
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@return: the domain |
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@rtype: L{Domain} |
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""" |
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if self.__domain==None: |
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if self.dim==2: |
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self.__domain=finley.Rectangle(n0=self.n[0],\ |
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n1=self.n[1],\ |
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l0=self.l[0],\ |
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l1=self.l[1],\ |
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order=self.order, \ |
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periodic0=self.periodic[0], \ |
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periodic1=self.periodic[1], \ |
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integrationOrder=self.integrationOrder) |
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else: |
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self.__domain=finley.Brick(n0=self.n[0],\ |
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n1=self.n[1],\ |
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n2=self.n[2],\ |
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l0=self.l[0],\ |
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l1=self.l[1],\ |
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l2=self.l[2],\ |
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order=self.order, \ |
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periodic0=self.periodic[0], \ |
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periodic1=self.periodic[1], \ |
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periodic2=self.periodic[2], \ |
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integrationOrder=self.integrationOrder) |
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return self.__domain |
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|
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class UpdateGeometry(Model): |
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""" |
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applies a displacement field to a domain |
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|
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@ivar displacement: displacements applied to the original mesh coordinates (in). |
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@type displacement: L{escript.Vector} |
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@ivar domain: domain |
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@type domain: L{escript.Domain} |
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""" |
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def __init__(self,**kwargs): |
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""" |
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set-up the object |
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""" |
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super(UpdateGeometry, self).__init__(**kwargs) |
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self.declareParameter(domain=None,\ |
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displacement=None) |
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|
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|
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def doInitialization(self): |
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""" |
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initialize model |
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""" |
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self.__x=self.domain.getX() |
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self.__reset=True |
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|
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def doStepPreprocessing(self,dt): |
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""" |
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applies the current L{displacement} to mesh nodes if required. |
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""" |
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if self.__reset: |
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self.trace("mesh nodes updated.") |
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self.domain.setX(self.__x+self.displacement) |
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self.__reset=False |
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|
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def doStep(self,dt): |
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""" |
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applies the current L{displacement} to mesh nodes. |
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""" |
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self.trace("mesh nodes updated.") |
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self.domain.setX(self.__x+self.displacement) |
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self.__reset=True |
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|
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def doStepPostprocessing(self,dt): |
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""" |
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marks nodes as beeing updated. |
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""" |
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self.__reset=False |
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|
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class ScalarConstrainerOverBox(Model): |
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""" |
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Creates a characteristic function for the location of constraints |
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for a scalar value and selects the value from an initial value |
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ate these locations. |
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|
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In the case that the spatial dimension is two, the arguments front and back are ignored. |
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@ivar domain: domain (in). |
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@ivar left: True to set a constraint at the left face of the domain (x[0]=min x[0]), default False (in). |
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@ivar right: True to set a constraint at the left face of the domain (x[0]=max x[0]), default False (in). |
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@ivar top: True to set a constraint at the left face of the domain (x[1]=min x[1]), default False (in). |
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@ivar bottom: True to set a constraint at the left face of the domain (x[1]=max x[1]), default False (in). |
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@ivar front: True to set a constraint at the left face of the domain (x[2]=min x[2]), default False (in). |
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@ivar back: True to set a constraint at the left face of the domain (x[2]=max x[2]), default False (in). |
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@ivar tol: absolute tolerance for "x=max x" condition, default 1.e-8 (in). |
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""" |
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def __init__(self,**kwargs): |
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super(ScalarConstrainerOverBox, self).__init__(**kwargs) |
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self.declareParameter(domain=None, \ |
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value=None, \ |
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left=False, \ |
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right=False, \ |
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top=False, \ |
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bottom=False, \ |
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front=False, \ |
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back=False, \ |
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tol=1.e-8) |
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self.__value_of_constraint = None |
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self.__location_of_constraint=None |
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def location_of_constraint(self): |
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""" |
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return the values used to constrain a solution |
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|
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@return: the mask marking the locations of the constraints |
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@rtype: L{escript.Scalar} |
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""" |
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if self.__location_of_constraint == None: self.__setOutput() |
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return self.__location_of_constraint |
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|
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def value_of_constraint(self): |
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""" |
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return the values used to constrain a solution |
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|
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@return: values to be used at the locations of the constraints. If |
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L{value} is not given C{None} is rerturned. |
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@rtype: L{escript.Scalar} |
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""" |
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if self.__location_of_constraint == None: self.__setOutput() |
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return self.__value_of_constraint |
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|
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def __setOutput(self): |
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x=self.domain.getX() |
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self.__location_of_constraint=Scalar(0,x.getFunctionSpace()) |
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if self.domain.getDim()==3: |
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x0,x1,x2=x[0],x[1],x[2] |
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if self.left: self.__location_of_constraint+=whereZero(x0-inf(x0),self.tol) |
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if self.right: self.__location_of_constraint+=whereZero(x0-sup(x0),self.tol) |
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if self.front: self.__location_of_constraint+=whereZero(x1-inf(x1),self.tol) |
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if self.back: self.__location_of_constraint+=whereZero(x1-sup(x1),self.tol) |
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if self.bottom: self.__location_of_constraint+=whereZero(x2-inf(x2),self.tol) |
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if self.top: self.__location_of_constraint+=whereZero(x2-sup(x2),self.tol) |
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else: |
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x0,x1=x[0],x[1] |
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if self.left: self.__location_of_constraint+=whereZero(x0-inf(x0),self.tol) |
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if self.right: self.__location_of_constraint+=whereZero(x0-sup(x0),self.tol) |
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if self.bottom: self.__location_of_constraint+=whereZero(x1-inf(x1),self.tol) |
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if self.top: self.__location_of_constraint+=whereZero(x1-sup(x1),self.tol) |
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if self.value: |
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self.__value_of_constraint=self.__location_of_constraint*self.value |
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|
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class VectorConstrainerOverBox(Model): |
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""" |
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Creates a characteristic function for the location of constraints vector value. |
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In the case that the spatial dimension is two, the arguments front and |
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back as well as the third component of each argument is ignored. |
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|
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@ivar domain: domain |
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@ivar left: list of three boolean. left[i]==True sets a constraint for the i-th component at the left face of the domain (x[0]=min x[0]), |
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default [False,False,False] (in). |
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@ivar right: list of three boolean. left[i]==True sets a constraint for the i-th component at the right face of the domain (x[0]=max x[0]), |
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default [False,False,False] (in). |
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@ivar top: list of three boolean. left[i]==True sets a constraint for the i-th component at the top face of the domain (x[1]=min x[1]), |
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default [False,False,False] (in). |
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@ivar bottom: list of three boolean. left[i]==True sets a constraint for the i-th component at the bottom face of the domain (x[1]=min x[1]), |
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default [False,False,False] (in). |
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@ivar front: list of three boolean. left[i]==True sets a constraint for the i-th component at the front face of the domain (x[2]=min x[2]), |
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default [False,False,False] (in). |
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@ivar back: list of three boolean. left[i]==True sets a constraint for the i-th component at the back face of the domain (x[2]=max x[2]), |
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default [False,False,False] (in). |
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@ivar tol: absolute tolerance for "x=max x" condition, default 1.e-8 (in). |
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""" |
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def __init__(self, **kwargs): |
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super(VectorConstrainerOverBox, self).__init__(**kwargs) |
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self.declareParameter(domain=None, \ |
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value=None, \ |
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left=[0,0,0], \ |
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right=[0,0,0], \ |
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top=[0,0,0], \ |
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bottom=[0,0,0], \ |
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front=[0,0,0], \ |
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back=[0,0,0], \ |
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tol=1.e-8) |
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self.__value_of_constraint = None |
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self.__location_of_constraint=None |
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|
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def location_of_constraint(self): |
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""" |
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return the values used to constrain a solution |
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|
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@return: the mask marking the locations of the constraints |
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@rtype: L{escript.Vector} |
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""" |
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if self.__location_of_constraint == None: self.__setOutput() |
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return self.__location_of_constraint |
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|
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def value_of_constraint(self): |
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""" |
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return the values used to constrain a solution |
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|
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@return: values to be used at the locations of the constraints. If |
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L{value} is not given C{None} is rerturned. |
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@rtype: L{escript.Vector} |
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""" |
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if self.__location_of_constraint == None: self.__setOutput() |
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return self.__value_of_constraint |
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|
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def __setOutput(self): |
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x=self.domain.getX() |
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self.__location_of_constraint=Vector(0,x.getFunctionSpace()) |
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if self.domain.getDim()==3: |
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x0,x1,x2=x[0],x[1],x[2] |
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left_mask=whereZero(x0-inf(x0),self.tol) |
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if self.left[0]: self.__location_of_constraint+=left_mask*[1.,0.,0.] |
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if self.left[1]: self.__location_of_constraint+=left_mask*[0.,1.,0.] |
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if self.left[2]: self.__location_of_constraint+=left_mask*[0.,0.,1.] |
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right_mask=whereZero(x0-sup(x0),self.tol) |
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if self.right[0]: self.__location_of_constraint+=right_mask*[1.,0.,0.] |
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if self.right[1]: self.__location_of_constraint+=right_mask*[0.,1.,0.] |
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if self.right[2]: self.__location_of_constraint+=right_mask*[0.,0.,1.] |
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front_mask=whereZero(x1-inf(x1),self.tol) |
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if self.front[0]: self.__location_of_constraint+=front_mask*[1.,0.,0.] |
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if self.front[1]: self.__location_of_constraint+=front_mask*[0.,1.,0.] |
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if self.front[2]: self.__location_of_constraint+=front_mask*[0.,0.,1.] |
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back_mask=whereZero(x1-sup(x1),self.tol) |
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if self.back[0]: self.__location_of_constraint+=back_mask*[1.,0.,0.] |
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if self.back[1]: self.__location_of_constraint+=back_mask*[0.,1.,0.] |
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if self.back[2]: self.__location_of_constraint+=back_mask*[0.,0.,1.] |
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bottom_mask=whereZero(x2-inf(x2),self.tol) |
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if self.bottom[0]: self.__location_of_constraint+=bottom_mask*[1.,0.,0.] |
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if self.bottom[1]: self.__location_of_constraint+=bottom_mask*[0.,1.,0.] |
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if self.bottom[2]: self.__location_of_constraint+=bottom_mask*[0.,0.,1.] |
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top_mask=whereZero(x2-sup(x2),self.tol) |
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if self.top[0]: self.__location_of_constraint+=top_mask*[1.,0.,0.] |
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if self.top[1]: self.__location_of_constraint+=top_mask*[0.,1.,0.] |
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if self.top[2]: self.__location_of_constraint+=top_mask*[0.,0.,1.] |
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if self.value: |
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self.__value_of_constraint=self.__location_of_constraint*self.value |
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else: |
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x0,x1=x[0],x[1] |
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left_mask=whereZero(x0-inf(x0),self.tol) |
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if self.left[0]: self.__location_of_constraint+=left_mask*[1.,0.] |
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if self.left[1]: self.__location_of_constraint+=left_mask*[0.,1.] |
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right_mask=whereZero(x0-sup(x0),self.tol) |
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if self.right[0]: self.__location_of_constraint+=right_mask*[1.,0.] |
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if self.right[1]: self.__location_of_constraint+=right_mask*[0.,1.] |
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bottom_mask=whereZero(x1-inf(x1),self.tol) |
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if self.bottom[0]: self.__location_of_constraint+=bottom_mask*[1.,0.] |
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if self.bottom[1]: self.__location_of_constraint+=bottom_mask*[0.,1.] |
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top_mask=whereZero(x1-sup(x1),self.tol) |
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if self.top[0]: self.__location_of_constraint+=top_mask*[1.,0.] |
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if self.top[1]: self.__location_of_constraint+=top_mask*[0.,1.] |
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if self.value: |
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self.__value_of_constraint=self.__location_of_constraint*self.value[:2] |
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|
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# vim: expandtab shiftwidth=4: |
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