| # *************************************************************************** | |
| # * Copyright (c) 2015 Przemo Firszt <przemo@firszt.eu> * | |
| # * Copyright (c) 2015 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__ = "Result import for Calculix dat file format" | |
| __author__ = "Przemo Firszt, Bernd Hahnebach" | |
| __url__ = "https://www.freecad.org" | |
| ## @package importCcxDatResults | |
| # \ingroup FEM | |
| # \brief FreeCAD Calculix DAT reader for FEM workbench | |
| import os | |
| import FreeCAD | |
| from FreeCAD import Console | |
| from builtins import open as pyopen | |
| EIGENVALUE_OUTPUT_SECTION = " E I G E N V A L U E O U T P U T" | |
| # ********* generic FreeCAD import and export methods ********* | |
| def open(filename): | |
| "called when freecad opens a file" | |
| docname = os.path.splitext(os.path.basename(filename))[0] | |
| insert(filename, docname) | |
| def insert(filename, docname): | |
| "called when freecad wants to import a file" | |
| try: | |
| doc = FreeCAD.getDocument(docname) | |
| except NameError: | |
| doc = FreeCAD.newDocument(docname) | |
| FreeCAD.ActiveDocument = doc | |
| import_dat(filename) | |
| # ********* module specific methods ********* | |
| def import_dat(filename, Analysis=None): | |
| r = readResult(filename) | |
| return r | |
| # read a calculix result file and extract the data | |
| def readResult(dat_input): | |
| Console.PrintMessage(f"Read ccx results from dat file: {dat_input}\n") | |
| dat_file = pyopen(dat_input, "r") | |
| eigenvalue_output_section_found = False | |
| mode_reading = False | |
| results = [] | |
| for line in dat_file: | |
| if EIGENVALUE_OUTPUT_SECTION in line: | |
| # Found EIGENVALUE_OUTPUT_SECTION | |
| eigenvalue_output_section_found = True | |
| if eigenvalue_output_section_found: | |
| try: | |
| mode = int(line[0:7]) | |
| mode_frequency = float(line[39:55]) | |
| m = {} | |
| m["eigenmode"] = mode | |
| m["frequency"] = mode_frequency | |
| results.append(m) | |
| mode_reading = True | |
| except Exception: | |
| if mode_reading: | |
| # Conversion error after mode reading started, so it's the end of section | |
| eigenvalue_output_section_found = False | |
| mode_reading = False | |
| dat_file.close() | |
| return results | |