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run.py
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run.py
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# ***************************************************************************
# * Copyright (c) 2017 Markus Hovorka <m.hovorka@live.de> *
# * *
# * This program is free software; you can redistribute it and/or modify *
# * it under the terms of the GNU Lesser General Public License (LGPL) *
# * as published by the Free Software Foundation; either version 2 of *
# * the License, or (at your option) any later version. *
# * for detail see the LICENCE text file. *
# * *
# * This program is distributed in the hope that it will be useful, *
# * but WITHOUT ANY WARRANTY; without even the implied warranty of *
# * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
# * GNU Library General Public License for more details. *
# * *
# * You should have received a copy of the GNU Library General Public *
# * License along with this program; if not, write to the Free Software *
# * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
# * USA *
# * *
# ***************************************************************************
__title__ = "FreeCAD FEM solver run"
__author__ = "Markus Hovorka"
__url__ = "http://www.freecadweb.org"
## \addtogroup FEM
# @{
import os
import os.path
import tempfile
import threading
import shutil
import FreeCAD as App
import femtools.femutils as femutils
from . import settings
from . import signal
from . import task
if App.GuiUp:
import FreeCADGui
from PySide import QtGui
CHECK = 0
PREPARE = 1
SOLVE = 2
RESULTS = 3
DONE = 4
_machines = {}
_dirTypes = {}
def run_fem_solver(solver, working_dir=None):
if solver.Proxy.Type == "Fem::FemSolverCalculixCcxTools":
App.Console.PrintMessage("CalxuliX ccx tools solver!\n")
from femtools.ccxtools import CcxTools as ccx
fea = ccx(solver)
fea.reset_mesh_purge_results_checked()
if working_dir is None:
fea.run()
else:
fea.update_objects()
fea.setup_working_dir(working_dir)
fea.setup_ccx()
message = fea.check_prerequisites()
if not message:
fea.write_inp_file()
fea.ccx_run()
fea.load_results()
else:
App.Console.PrintError("Houston, we have a problem ...!\n{}\n".format(message))
else:
# App.Console.PrintMessage("Frame work solver!\n")
try:
if working_dir is not None:
machine = getMachine(solver, working_dir)
else:
machine = getMachine(solver)
except MustSaveError:
error_message = (
"Please save the file before executing the solver. "
"This must be done because the location of the working "
"directory is set to \"Beside *.FCStd File\"."
)
App.Console.PrintError(error_message + "\n")
if App.GuiUp:
QtGui.QMessageBox.critical(
FreeCADGui.getMainWindow(),
"Can't start Solver",
error_message
)
return
except DirectoryDoesNotExistError:
error_message = "Selected working directory doesn't exist."
App.Console.PrintError(error_message + "\n")
if App.GuiUp:
QtGui.QMessageBox.critical(
FreeCADGui.getMainWindow(),
"Can't start Solver",
error_message
)
return
if not machine.running:
machine.reset()
machine.target = RESULTS
machine.start()
machine.join() # wait for the machine to finish.
def getMachine(solver, path=None):
_DocObserver.attach()
m = _machines.get(solver)
if m is None or not _isPathValid(m, path):
m = _createMachine(solver, path, testmode=False)
return m
def _isPathValid(m, path):
t = _dirTypes.get(m.directory) # setting default None
setting = settings.get_dir_setting()
if path is not None:
return t is None and m.directory == path
if setting == settings.BESIDE:
if t == settings.BESIDE:
base = os.path.split(m.directory.rstrip("/"))[0]
return base == _getBesideBase(m.solver)
return False
if setting == settings.TEMPORARY:
return t == settings.TEMPORARY
if setting == settings.CUSTOM:
if t == settings.CUSTOM:
firstBase = os.path.split(m.directory.rstrip("/"))[0]
customBase = os.path.split(firstBase)[0]
return customBase == _getCustomBase(m.solver)
return False
def _createMachine(solver, path, testmode):
global _dirTypes
setting = settings.get_dir_setting()
if path is not None:
_dirTypes[path] = None
elif setting == settings.BESIDE:
path = _getBesideDir(solver)
_dirTypes[path] = settings.BESIDE
elif setting == settings.TEMPORARY:
path = _getTempDir(solver)
_dirTypes[path] = settings.TEMPORARY
elif setting == settings.CUSTOM:
path = _getCustomDir(solver)
_dirTypes[path] = settings.CUSTOM
m = solver.Proxy.createMachine(solver, path, testmode)
oldMachine = _machines.get(solver)
if oldMachine is not None and _dirTypes.get(oldMachine.directory) is not None:
del _dirTypes[oldMachine.directory]
_machines[solver] = m
return m
def _getTempDir(solver):
return tempfile.mkdtemp(prefix="fcfemsolv_")
def _getBesideDir(solver):
base = _getBesideBase(solver)
specificPath = os.path.join(base, solver.Label)
specificPath = _getUniquePath(specificPath)
if not os.path.isdir(specificPath):
os.makedirs(specificPath)
return specificPath
def _getBesideBase(solver):
fcstdPath = solver.Document.FileName
if fcstdPath == "":
error_message = (
"Please save the file before executing the solver. "
"This must be done because the location of the working "
"directory is set to \"Beside *.FCStd File\"."
)
App.Console.PrintError(error_message + "\n")
if App.GuiUp:
QtGui.QMessageBox.critical(
FreeCADGui.getMainWindow(),
"Can't start Solver",
error_message
)
raise MustSaveError()
return os.path.splitext(fcstdPath)[0]
def _getCustomDir(solver):
base = _getCustomBase(solver)
specificPath = os.path.join(
base, solver.Document.Name, solver.Label)
specificPath = _getUniquePath(specificPath)
if not os.path.isdir(specificPath):
os.makedirs(specificPath)
return specificPath
def _getCustomBase(solver):
path = settings.get_custom_dir()
if not os.path.isdir(path):
error_message = "Selected working directory doesn't exist."
App.Console.PrintError(error_message + "\n")
if App.GuiUp:
QtGui.QMessageBox.critical(
FreeCADGui.getMainWindow(),
"Can't start Solver",
error_message
)
raise DirectoryDoesNotExistError("Invalid path")
return path
def _getUniquePath(path):
postfix = 1
if path in _dirTypes:
path += "_%03d" % postfix
while path in _dirTypes:
postfix += 1
path = path[:-4] + "_%03d" % postfix
return path
class BaseTask(task.Thread):
def __init__(self):
super(BaseTask, self).__init__()
self.solver = None
self.directory = None
self.testmode = None
@property
def analysis(self):
return femutils.findAnalysisOfMember(self.solver)
class Machine(BaseTask):
def __init__(
self, solver, directory, check,
prepare, solve, results, testmode):
super(Machine, self).__init__()
self.solver = solver
self.directory = directory
self.signalState = set()
self.check = check
self.prepare = prepare
self.solve = solve
self.results = results
self.target = RESULTS
self._state = CHECK
self._pendingState = None
self._isReset = False
self.testmode = testmode
@property
def state(self):
return self._state
def run(self):
self._confTasks()
self._isReset = False
self._pendingState = self.state
while (
not self.aborted
and not self.failed
and self._pendingState <= self.target
):
task = self._getTask(self._pendingState)
self._runTask(task)
self.report.extend(task.report)
if task.failed:
self.fail()
elif task.aborted:
self.abort()
else:
self._pendingState += 1
self._applyPending()
def reset(self, newState=CHECK):
state = (self.state
if self._pendingState is None
else self._pendingState)
if newState < state:
self._isReset = True
self._state = newState
signal.notify(self.signalState)
def _confTasks(self):
tasks = [
self.check,
self.prepare,
self.solve,
self.results
]
for t in tasks:
t.solver = self.solver
t.directory = self.directory
t.testmode = self.testmode
def _applyPending(self):
if not self._isReset:
self._state = self._pendingState
signal.notify(self.signalState)
self._isReset = False
self._pendingState = None
def _runTask(self, task):
def statusProxy(line):
self.pushStatus(line)
def killer():
task.abort()
self.signalAbort.add(killer)
task.signalStatus.add(statusProxy)
task.start()
task.join()
self.signalAbort.remove(killer)
task.signalStatus.remove(statusProxy)
def _getTask(self, state):
if state == CHECK:
return self.check
elif state == PREPARE:
return self.prepare
elif state == SOLVE:
return self.solve
elif state == RESULTS:
return self.results
return None
class Check(BaseTask):
def checkMesh(self):
meshes = femutils.get_member(
self.analysis, "Fem::FemMeshObject")
if len(meshes) == 0:
self.report.error("Missing a mesh object.")
self.fail()
return False
elif len(meshes) > 1:
self.report.error(
"Too many meshes. "
"More than one mesh is not supported.")
self.fail()
return False
return True
def checkMaterial(self):
matObjs = femutils.get_member(
self.analysis, "App::MaterialObjectPython")
if len(matObjs) == 0:
self.report.error(
"No material object found. "
"At least one material is required.")
self.fail()
return False
return True
def checkSupported(self, allSupported):
for m in self.analysis.Group:
if femutils.is_of_type(m, "Fem::Constraint"):
supported = False
for sc in allSupported:
if femutils.is_of_type(m, *sc):
supported = True
if not supported:
self.report.warning(
"Ignored unsupported constraint: %s" % m.Label)
return True
class Solve(BaseTask):
def _observeSolver(self, process):
output = ""
line = femutils.pydecode(process.stdout.readline())
self.pushStatus(line)
output += line
line = femutils.pydecode(process.stdout.readline())
while line:
line = "\n%s" % line.rstrip()
self.pushStatus(line)
output += line
line = femutils.pydecode(process.stdout.readline())
return output
class Prepare(BaseTask):
pass
class Results(BaseTask):
pass
class _DocObserver(object):
_instance = None
_WHITELIST = [
"Fem::Constraint",
"App::MaterialObject",
"Fem::FemMeshObject",
]
_BLACKLIST_PROPS = [
"Label",
"ElmerOutput",
"ElmerResult"
]
def __init__(self):
self._saved = {}
for doc in iter(App.listDocuments().values()):
for obj in doc.Objects:
if obj.isDerivedFrom("Fem::FemAnalysis"):
self._saved[obj] = obj.Group
@classmethod
def attach(cls):
if cls._instance is None:
cls._instance = cls()
App.addDocumentObserver(cls._instance)
def slotDeletedObject(self, obj):
self._checkModel(obj)
if obj in _machines:
self._deleteMachine(obj)
def slotChangedObject(self, obj, prop):
if prop not in self._BLACKLIST_PROPS:
self._checkAnalysis(obj)
self._checkEquation(obj)
self._checkSolver(obj)
self._checkModel(obj)
def slotDeletedDocument(self, doc):
for obj in doc.Objects:
if obj in _machines:
self._deleteMachine(obj)
def _deleteMachine(self, obj):
m = _machines[obj]
t = _dirTypes[m.directory]
def delegate():
m.join()
if t == settings.TEMPORARY:
shutil.rmtree(m.directory)
del _dirTypes[m.directory]
del _machines[obj]
m.abort()
thread = threading.Thread(target=delegate)
thread.daemon = False
thread.start()
def _checkEquation(self, obj):
for o in obj.Document.Objects:
if (
femutils.is_derived_from(o, "Fem::FemSolverObject")
and hasattr(o, "Group")
and obj in o.Group
):
if o in _machines:
_machines[o].reset()
def _checkSolver(self, obj):
analysis = femutils.findAnalysisOfMember(obj)
for m in iter(_machines.values()):
if analysis == m.analysis and obj == m.solver:
m.reset()
def _checkAnalysis(self, obj):
if femutils.is_derived_from(obj, "Fem::FemAnalysis"):
deltaObjs = self._getAdded(obj)
if deltaObjs:
reset = False
for o in deltaObjs:
if self._partOfModel(o):
reset = True
if reset:
self._resetAll(obj)
def _checkModel(self, obj):
if self._partOfModel(obj):
analysis = femutils.findAnalysisOfMember(obj)
if analysis is not None:
self._resetAll(analysis)
def _getAdded(self, analysis):
if analysis not in self._saved:
self._saved[analysis] = []
delta = set(analysis.Group) - set(self._saved[analysis])
self._saved[analysis] = analysis.Group
return delta
def _resetAll(self, analysis):
for m in iter(_machines.values()):
if analysis == m.analysis:
m.reset()
def _partOfModel(self, obj):
for t in self._WHITELIST:
if femutils.is_derived_from(obj, t):
return True
return False
class MustSaveError(Exception):
pass
class DirectoryDoesNotExistError(Exception):
pass
## @}