30e2ec315b
It's a simple CalculiX dat file reader used to extract eigenmode frequencies after freqyency analysis. Signed-off-by: Przemo Firszt <przemo@firszt.eu>
90 lines
3.4 KiB
Python
90 lines
3.4 KiB
Python
#***************************************************************************
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#* Copyright (c) 2015 - FreeCAD Developers *
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#* Author: Przemo Firszt <przemo@firszt.eu> *
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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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import FreeCAD
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import os
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__title__ = "ccxDatReader"
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__author__ = "Przemo Firszt"
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__url__ = "http://www.freecadweb.org"
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if open.__module__ == '__builtin__':
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# because we'll redefine open below
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pyopen = open
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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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# read a calculix result file and extract the data
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def readResult(dat_input):
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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:
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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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def import_dat(filename, Analysis=None):
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r = readResult(filename)
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#print ("Results {}".format(r))
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return r
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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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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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