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# -*- coding: utf-8 -*- |
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############################################################################## |
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# |
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# Copyright (c) 2003-2020 by The University of Queensland |
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# http://www.uq.edu.au |
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# |
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# Primary Business: Queensland, Australia |
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# Licensed under the Apache License, version 2.0 |
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# http://www.apache.org/licenses/LICENSE-2.0 |
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# |
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# Development until 2012 by Earth Systems Science Computational Center (ESSCC) |
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# Development 2012-2013 by School of Earth Sciences |
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# Development from 2014 by Centre for Geoscience Computing (GeoComp) |
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# Development from 2019 by School of Earth and Environmental Sciences |
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# |
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############################################################################## |
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|
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from __future__ import print_function, division |
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|
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__copyright__="""Copyright (c) 2003-2020 by The University of Queensland |
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http://www.uq.edu.au |
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Primary Business: Queensland, Australia""" |
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__license__="""Licensed under the Apache License, version 2.0 |
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http://www.apache.org/licenses/LICENSE-2.0""" |
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__url__="https://launchpad.net/escript-finley" |
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|
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""" |
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Layer Cake |
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|
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This script uses the pycad module to build a rectangular layered |
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system of prisms for modelling. |
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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__="Antony Hallam antony.hallam@uqconnect.edu.au" |
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|
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import esys.pycad as pycad |
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|
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def buildFreeSurface(xwidth,ywidth): |
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''' |
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Build a free surface to start the layer cake model. |
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This surface is planar. |
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|
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Parameters: |
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xwidth :: width in x direction in meters.\ |
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ywidth :: width in y direction in meters.\ |
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''' |
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|
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# Layer Corners |
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corner_points=[] |
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corner_points.append(pycad.Point(0.0, 0.0, 0.0)) |
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corner_points.append(pycad.Point(xwidth, 0.0, 0.0)) |
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corner_points.append(pycad.Point(xwidth, ywidth, 0.0)) |
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corner_points.append(pycad.Point(0.0, ywidth, 0.0)) |
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corner_points.append(corner_points[0]) #repeated point for line looping |
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|
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# Edges of Free Surface |
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hor_lines=[] |
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for i in range(0,4): # loop through four sides |
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hor_lines.append(pycad.Line(corner_points[i],corner_points[i+1])) |
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|
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# Create Free Surface |
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free_surf = pycad.PlaneSurface(pycad.CurveLoop(*tuple(hor_lines[0:4]))) |
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|
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# Return Surface and primative arrays. |
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return free_surf,hor_lines,corner_points |
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|
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def buildLayer(xwidth,ywidth,depth,lay_surf,hor_lines,corner_points): |
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''' |
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Builds a boxlike volume and returns primatives for layered model |
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construction. |
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|
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Parameters: |
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xwidth :: width in x direction in meters.\ |
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ywidth :: width in y direction in meters.\ |
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depth :: depth to bottom of layer in meters.\ |
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lay_surf :: surface at top of layer (see buildFreeSurf)\ |
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hor_lines :: lines of lay_surf\ |
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corner_points :: points of hor_lines\ |
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''' |
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# Layer Corners |
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corner_points.append(pycad.Point(0.0, 0.0, depth)) |
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corner_points.append(pycad.Point(xwidth, 0.0, depth)) |
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corner_points.append(pycad.Point(xwidth, ywidth, depth)) |
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corner_points.append(pycad.Point(0.0, ywidth, depth)) |
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corner_points.append(corner_points[5]) #repeated point for line looping |
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|
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# Build the bottom surface edges. |
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for i in range(0,4): # loop through four edges |
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hor_lines.append(pycad.Line(corner_points[5+i],corner_points[6+i])) |
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|
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# Join corners vertically. |
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ver_lines=[] |
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for i in range(0,4): # loop through four corners |
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ver_lines.append(pycad.Line(corner_points[i],corner_points[i+5])) |
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ver_lines.append(ver_lines[0]) #repeated edge for surface looping |
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|
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# Build surface array. |
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lay_surf=[-lay_surf] #Negative of top surface |
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# Bottom Surface |
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lay_surf.append(pycad.PlaneSurface(pycad.CurveLoop(*tuple(hor_lines[4:8])))) |
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for i in range(0,4): # loop through four sides |
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lay_surf.append(pycad.PlaneSurface(pycad.CurveLoop(\ |
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-ver_lines[i],-hor_lines[i+4],\ |
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ver_lines[i+1],hor_lines[i] ))) |
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|
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# Build Layer Volume |
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lay_vol=pycad.Volume(-pycad.SurfaceLoop(*tuple(lay_surf))) |
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|
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# Return new volume, and primatives for next volume layer. |
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return lay_vol,-lay_surf[1],hor_lines[4:8],corner_points[5:10] |
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|
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|
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def layer_cake(domain,xwidth,ywidth,depths): |
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''' |
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Builds a horizontally layered box like model. All layers are |
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tagged as 'intface_i' where i is the python style integer denoting |
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that layer. For example, the free surface is tagged 'interface_0'. |
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Volumes are similarly tagged as 'volume_i'. |
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|
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Parameters: |
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domain :: output of Pycad.Design - It needs to be dim 3.\ |
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xwidth :: width in x direction in meters.\ |
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ywidth :: width in y direction in meters.\ |
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depth :: depth to bottom of layer in meters.\ |
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|
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One may save the domain using: |
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# Output settings.\ |
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domain.setScriptFileName(os.path.join(save_path,fname+".geo"))\ |
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domain.setMeshFileName(os.path.join(save_path,fname+".msh"))\ |
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findomain=fin.MakeDomain(domain) # make the finley domain:\ |
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|
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Create a file that can be read back in to python with ReadMesh.\ |
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findomain.write(os.path.join(save_path,fname+".fly"))\ |
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''' |
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|
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#get number of layers |
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if not hasattr(depths,"__len__"): depths = [ depths, ] |
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ndepths=len(depths) |
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|
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if domain.getDim() != 3: |
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raise TypeError("domain must be of dimension order 3.") |
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|
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# Build the First Surface and add it to the domain |
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fsuf,fsurl,fsurp=buildFreeSurface(xwidth,ywidth) |
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domain.addItems(pycad.PropertySet('intface_%d'%(0),fsuf)) |
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|
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# Build each layer sequentially |
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# Set up temporary variables. |
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tsuf=fsuf; tsurl=fsurl; tsurp=fsurp |
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# Loop through all depths. |
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for i in range(0,ndepths): |
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# Build new layer. |
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tvol,tsuf,tsurl,tsurp=buildLayer(xwidth,ywidth,depths[i],\ |
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tsuf,tsurl,tsurp) |
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# Add the new interface to the domain. |
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domain.addItems(pycad.PropertySet('intface_%d'%(i+1),tsuf)) |
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# Add the new volume/layer to the domain. |
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domain.addItems(pycad.PropertySet('volume_%d'%i,tvol)) |
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|
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return domain |
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