97 lines
3.8 KiB
Python
97 lines
3.8 KiB
Python
# ***************************************************************************
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# * Copyright (c) 2015 Przemo Firszt <przemo@firszt.eu> *
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# * Copyright (c) 2015 Bernd Hahnebach <bernd@bimstatik.org> *
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# * *
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# * This file is part of the FreeCAD CAx development system. *
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# * *
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# * This program is free software; you can redistribute it and/or modify *
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# * it under the terms of the GNU Lesser General Public License (LGPL) *
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# * as published by the Free Software Foundation; either version 2 of *
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# * the License, or (at your option) any later version. *
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# * for detail see the LICENCE text file. *
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# * *
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# * This program is distributed in the hope that it will be useful, *
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# * but WITHOUT ANY WARRANTY; without even the implied warranty of *
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# * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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# * GNU Library General Public License for more details. *
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# * *
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# * You should have received a copy of the GNU Library General Public *
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# * License along with this program; if not, write to the Free Software *
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# * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
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# * USA *
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# * *
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# ***************************************************************************
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__title__ = "Result import for Calculix dat file format"
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__author__ = "Przemo Firszt, Bernd Hahnebach"
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__url__ = "https://www.freecad.org"
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## @package importCcxDatResults
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# \ingroup FEM
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# \brief FreeCAD Calculix DAT reader for FEM workbench
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import os
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import FreeCAD
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from FreeCAD import Console
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from builtins import open as pyopen
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EIGENVALUE_OUTPUT_SECTION = " E I G E N V A L U E O U T P U T"
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# ********* generic FreeCAD import and export methods *********
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def open(filename):
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"called when freecad opens a file"
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docname = os.path.splitext(os.path.basename(filename))[0]
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insert(filename, docname)
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def insert(filename, docname):
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"called when freecad wants to import a file"
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try:
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doc = FreeCAD.getDocument(docname)
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except NameError:
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doc = FreeCAD.newDocument(docname)
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FreeCAD.ActiveDocument = doc
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import_dat(filename)
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# ********* module specific methods *********
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def import_dat(filename, Analysis=None):
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r = readResult(filename)
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return r
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# read a calculix result file and extract the data
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def readResult(dat_input):
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Console.PrintMessage(f"Read ccx results from dat file: {dat_input}\n")
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dat_file = pyopen(dat_input, "r")
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eigenvalue_output_section_found = False
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mode_reading = False
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results = []
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for line in dat_file:
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if EIGENVALUE_OUTPUT_SECTION in line:
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# Found EIGENVALUE_OUTPUT_SECTION
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eigenvalue_output_section_found = True
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if eigenvalue_output_section_found:
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try:
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mode = int(line[0:7])
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mode_frequency = float(line[39:55])
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m = {}
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m["eigenmode"] = mode
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m["frequency"] = mode_frequency
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results.append(m)
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mode_reading = True
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except Exception:
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if mode_reading:
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# Conversion error after mode reading started, so it's the end of section
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eigenvalue_output_section_found = False
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mode_reading = False
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dat_file.close()
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return results
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