197 lines
8.5 KiB
Python
Executable File
197 lines
8.5 KiB
Python
Executable File
#!/usr/bin/env python2
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# -*- coding: UTF-8 no BOM -*-
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import sys,os
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import numpy as np
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from optparse import OptionParser
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import damask
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scriptName = os.path.splitext(os.path.basename(__file__))[0]
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scriptID = ' '.join([scriptName,damask.version])
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sys.path.append(damask.solver.Marc().libraryPath('../../'))
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active=[True,True,True] # directions on which to add PBC
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def outMentat(cmd,locals):
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if cmd[0:3] == '(!)':
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exec(cmd[3:])
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elif cmd[0:3] == '(?)':
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cmd = eval(cmd[3:])
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py_mentat.py_send(cmd)
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else:
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py_mentat.py_send(cmd)
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return
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#-------------------------------------------------------------------------------------------------
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def outFile(cmd,locals,dest):
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if cmd[0:3] == '(!)':
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exec(cmd[3:])
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elif cmd[0:3] == '(?)':
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cmd = eval(cmd[3:])
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dest.write(cmd+'\n')
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else:
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dest.write(cmd+'\n')
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return
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#-------------------------------------------------------------------------------------------------
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def output(cmds,locals,dest):
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for cmd in cmds:
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if isinstance(cmd,list):
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output(cmd,locals,dest)
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else:
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if dest == 'Mentat':
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outMentat(str(cmd),locals)
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else:
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outFile(str(cmd),locals,dest)
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return
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def servoLink():
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cmds = []
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base = ['x','y','z']
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box = {'min': np.zeros(3,dtype='d'),
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'max': np.zeros(3,dtype='d'),
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'delta': np.zeros(3,dtype='d'),
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}
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Nnodes = py_mentat.py_get_int("nnodes()")
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NodeCoords = np.zeros((Nnodes,3),dtype='d')
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for node in xrange(Nnodes):
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NodeCoords[node,0] = py_mentat.py_get_float("node_x(%i)"%(node+1))
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NodeCoords[node,1] = py_mentat.py_get_float("node_y(%i)"%(node+1))
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NodeCoords[node,2] = py_mentat.py_get_float("node_z(%i)"%(node+1))
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box['min'] = NodeCoords.min(axis=0) # find the bounding box
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box['max'] = NodeCoords.max(axis=0)
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box['delta'] = box['max']-box['min']
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for coord in xrange(3): # calc the dimension of the bounding box
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if box['delta'][coord] != 0.0:
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for extremum in ['min','max']:
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rounded = round(box[extremum][coord]*1e+15/box['delta'][coord]) * \
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1e-15*box['delta'][coord] # rounding to 1e-15 of dimension
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box[extremum][coord] = 0.0 if rounded == 0.0 else rounded # get rid of -0.0 (negative zeros)
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baseNode = {}
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linkNodes = []
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#-------------------------------------------------------------------------------------------------
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# loop over all nodes
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for node in xrange(Nnodes):
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key = {}
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maxFlag = [False, False, False]
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Nmax = 0
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Nmin = 0
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for coord in xrange(3): # for each direction
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if box['delta'][coord] != 0.0:
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rounded = round(NodeCoords[node,coord]*1e+15/box['delta'][coord]) * \
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1e-15*box['delta'][coord] # rounding to 1e-15 of dimension
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NodeCoords[node,coord] = 0.0 if rounded == 0.0 else rounded # get rid of -0.0 (negative zeros)
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key[base[coord]] = "%.8e"%NodeCoords[node,coord] # translate position to string
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if (key[base[coord]] == "%.8e"%box['min'][coord]): # compare to min of bounding box (i.e. is on outer face?)
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Nmin += 1 # count outer (back) face membership
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elif (key[base[coord]] == "%.8e"%box['max'][coord]): # compare to max of bounding box (i.e. is on outer face?)
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Nmax += 1 # count outer (front) face membership
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maxFlag[coord] = True # remember face membership (for linked nodes)
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if Nmin > 0: # node is on a back face
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# prepare for any non-existing entries in the data structure
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if key['x'] not in baseNode.keys():
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baseNode[key['x']] = {}
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if key['y'] not in baseNode[key['x']].keys():
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baseNode[key['x']][key['y']] = {}
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if key['z'] not in baseNode[key['x']][key['y']].keys():
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baseNode[key['x']][key['y']][key['z']] = 0
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baseNode[key['x']][key['y']][key['z']] = node+1 # remember the base node id
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if Nmax > 0 and Nmax >= Nmin: # node is on at least as many front than back faces
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if any([maxFlag[i] and active[i] for i in xrange(3)]):
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linkNodes.append({'id': node+1,'coord': NodeCoords[node], 'faceMember': [maxFlag[i] and active[i] for i in xrange(3)]})
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baseCorner = baseNode["%.8e"%box['min'][0]]["%.8e"%box['min'][1]]["%.8e"%box['min'][2]] # detect ultimate base node
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for node in linkNodes: # loop over all linked nodes
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linkCoord = [node['coord']] # start list of control node coords with my coords
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for dir in xrange(3): # check for each direction
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if node['faceMember'][dir]: # me on this front face
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linkCoord[0][dir] = box['min'][dir] # project me onto rear face along dir
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linkCoord.append(np.array(box['min'])) # append base corner
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linkCoord[-1][dir] = box['max'][dir] # stretch it to corresponding control leg of "dir"
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nLinks = len(linkCoord)
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for dof in [1,2,3]:
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cmds.append([
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"*new_link *link_class servo",
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"*link_class servo *tied_node %i"%node['id'],
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"*link_class servo *tied_dof %i"%dof,
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"*servo_nterms %i"%(1+nLinks),
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])
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for i in range(nLinks):
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cmds.append([
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"*link_class servo *servo_ret_node %i %i"\
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%(i+1,baseNode["%.8e"%linkCoord[i][0]]["%.8e"%linkCoord[i][1]]["%.8e"%linkCoord[i][2]]),
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"*link_class servo *servo_ret_dof %i %i"%(i+1,dof),
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"*link_class servo *servo_ret_coef %i 1"%(i+1),
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])
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cmds.append([
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"*link_class servo *servo_ret_node %i %i"%(1+nLinks,baseCorner),
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"*link_class servo *servo_ret_dof %i %i"%(1+nLinks,dof),
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"*link_class servo *servo_ret_coef %i -%i"%(1+nLinks,nLinks-1),
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])
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return cmds
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#--------------------------------------------------------------------------------------------------
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# MAIN
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#--------------------------------------------------------------------------------------------------
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parser = OptionParser(option_class=damask.extendableOption, usage = '%prog [options]', description = """
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Set up servo linking to achieve periodic boundary conditions for a regular hexahedral mesh presently opened in MSC.Mentat
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""", version = scriptID)
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parser.add_option("-p", "--port", type="int", dest="port", metavar='int',
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help="Mentat connection port [%default]")
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parser.add_option("-v", "--verbose", action="store_true", dest="verbose",
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help="write Mentat command stream also to stdout [%default]")
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parser.set_defaults(port = 40007)
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parser.set_defaults(verbose = False)
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(options, args) = parser.parse_args()
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if options.verbose:
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file={'croak':sys.stderr}
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else:
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file={'croak':sys.stdout}
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try:
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import py_mentat
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except:
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file['croak'].write('error: no valid Mentat release found')
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sys.exit(-1)
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outputLocals = {}
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file['croak'].write('\033[1m'+scriptName+'\033[0m\n\n')
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file['croak'].write( 'waiting to connect...\n')
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try:
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py_mentat.py_connect('',options.port)
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# prevent redrawing in Mentat, should be much faster. Since py_connect has no return value, try this to determine if failed or not
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output(['*draw_manual'],outputLocals,'Mentat')
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except:
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file['croak'].write('Could not connect. Set Tools/Python/"Run as Separate Process" & "Initiate"...\n')
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sys.exit()
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file['croak'].write( 'connected...\n')
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output(['*remove_all_servos',
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'*sweep_all',
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'*renumber_nodes',
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'*set_links off',
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],outputLocals,'Mentat') # script depends on consecutive numbering of nodes
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cmds = servoLink()
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output(cmds,outputLocals,'Mentat')
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py_mentat.py_disconnect()
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if options.verbose:
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output(cmds,outputLocals,sys.stdout)
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