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# * Copyright (c) 2017 Markus Hovorka <m.hovorka@live.de> *
# * Copyright (c) 2017 Bernd Hahnebach <bernd@bimstatik.org> *
# * *
# * This file is part of the FreeCAD CAx development system. *
# * *
# * 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 CalculiX tasks"
__author__ = "Markus Hovorka, Bernd Hahnebach"
__url__ = "https://www.freecad.org"
## \addtogroup FEM
# @{
import os
import os.path
import subprocess
import FreeCAD
from . import writer
from .. import run
from .. import settings
from feminout import importCcxDatResults
from feminout import importCcxFrdResults
from femmesh import meshsetsgetter
from femtools import femutils
from femtools import membertools
_inputFileName = None
class Check(run.Check):
def run(self):
self.pushStatus("Checking analysis member...\n")
self.check_mesh_exists()
# workaround use Calculix ccxtools pre checks
from femtools.checksanalysis import check_member_for_solver_calculix
message = check_member_for_solver_calculix(
self.analysis,
self.solver,
membertools.get_mesh_to_solve(self.analysis)[0],
membertools.AnalysisMember(self.analysis),
)
if message:
text = "CalculiX can not be started...\n"
self.report.error(f"{text}{message}")
self.fail()
return
class Prepare(run.Prepare):
def run(self):
global _inputFileName
self.pushStatus("Preparing input...\n")
# get mesh set data
# TODO evaluate if it makes sense to add new task
# between check and prepare to the solver frame work
mesh_obj = membertools.get_mesh_to_solve(self.analysis)[0] # pre check done already
meshdatagetter = meshsetsgetter.MeshSetsGetter(
self.analysis,
self.solver,
mesh_obj,
membertools.AnalysisMember(self.analysis),
)
meshdatagetter.get_mesh_sets()
# write solver input
w = writer.FemInputWriterCcx(
self.analysis,
self.solver,
mesh_obj,
meshdatagetter.member,
self.directory,
meshdatagetter.mat_geo_sets,
)
path = w.write_solver_input()
# report to user if task succeeded
if path != "" and os.path.isfile(path):
self.pushStatus("Writing solver input completed.")
else:
self.pushStatus("Writing solver input failed.")
self.fail()
_inputFileName = os.path.splitext(os.path.basename(path))[0]
class Solve(run.Solve):
def run(self):
self.pushStatus("Executing solver...\n")
# get solver binary
self.pushStatus("Get solver binary...\n")
binary = settings.get_binary("Calculix")
if binary is None:
self.pushStatus("Error: The Calculix binary has not been found!")
self.fail()
return
# run solver
self._process = subprocess.Popen(
[binary, "-i", _inputFileName],
cwd=self.directory,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
)
self.signalAbort.add(self._process.terminate)
# output = self._observeSolver(self._process)
self._process.communicate()
self.signalAbort.remove(self._process.terminate)
# if not self.aborted:
# self._updateOutput(output)
# del output # get flake8 quiet
class Results(run.Results):
def run(self):
prefs = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/Fem/General")
if not prefs.GetBool("KeepResultsOnReRun", False):
self.purge_results()
self.load_results()
def purge_results(self):
self.pushStatus("Purge existing results...\n")
# TODO dat file will not be removed
# TODO implement a generic purge method
# TODO results from other solvers will be removed too
# the user should decide if purge should only
# delete this solver results or results from all solvers
for m in membertools.get_member(self.analysis, "Fem::FemResultObject"):
if m.Mesh and femutils.is_of_type(m.Mesh, "Fem::MeshResult"):
self.analysis.Document.removeObject(m.Mesh.Name)
self.analysis.Document.removeObject(m.Name)
self.analysis.Document.recompute()
def load_results(self):
self.pushStatus("Import new results...\n")
self.load_ccxfrd_results()
self.load_ccxdat_results()
def load_ccxfrd_results(self):
frd_result_file = os.path.join(self.directory, _inputFileName + ".frd")
if os.path.isfile(frd_result_file):
result_name_prefix = "CalculiX_" + self.solver.AnalysisType + "_"
importCcxFrdResults.importFrd(frd_result_file, self.analysis, result_name_prefix)
else:
# TODO: use solver framework status message system
FreeCAD.Console.PrintError(f"FEM: No results found at {frd_result_file}!\n")
self.fail()
def load_ccxdat_results(self):
dat_result_file = os.path.join(self.directory, _inputFileName + ".dat")
if os.path.isfile(dat_result_file):
mode_frequencies = importCcxDatResults.import_dat(dat_result_file, self.analysis)
else:
# TODO: use solver framework status message system
FreeCAD.Console.PrintError(f"FEM: No results found at {dat_result_file}!\n")
self.fail()
if mode_frequencies:
for m in membertools.get_member(self.analysis, "Fem::FemResultObject"):
if m.Eigenmode > 0:
for mf in mode_frequencies:
if m.Eigenmode == mf["eigenmode"]:
m.EigenmodeFrequency = mf["frequency"]
## @}
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