| # *************************************************************************** | |
| # * 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__ = "FreeCAD FEM constraint self weight document object" | |
| __author__ = "Bernd Hahnebach" | |
| __url__ = "https://www.freecad.org" | |
| ## @package constraint_selfweight | |
| # \ingroup FEM | |
| # \brief constraint self weight object | |
| import FreeCAD | |
| from . import base_fempythonobject | |
| from femtools import constants | |
| class ConstraintSelfWeight(base_fempythonobject.BaseFemPythonObject): | |
| """ | |
| The ConstraintSelfWeight object" | |
| """ | |
| Type = "Fem::ConstraintSelfWeight" | |
| def __init__(self, obj): | |
| super().__init__(obj) | |
| self.addProperty(obj) | |
| # https://wiki.freecad.org/Scripted_objects#Property_Type | |
| # https://forum.freecad.org/viewtopic.php?f=18&t=13460&start=20#p109709 | |
| # https://forum.freecad.org/viewtopic.php?t=25524 | |
| # obj.setEditorMode("References", 1) # read only in PropertyEditor, but writeable by Python | |
| obj.setEditorMode("References", 2) # do not show in Editor | |
| def addProperty(self, obj): | |
| obj.addProperty( | |
| "App::PropertyAcceleration", "GravityAcceleration", "Gravity", "Gravity acceleration" | |
| ) | |
| obj.setPropertyStatus("GravityAcceleration", "LockDynamic") | |
| obj.GravityAcceleration = constants.gravity() | |
| obj.addProperty( | |
| "App::PropertyVector", "GravityDirection", "Gravity", "Normalized gravity direction" | |
| ) | |
| obj.setPropertyStatus("GravityDirection", "LockDynamic") | |
| obj.GravityDirection = FreeCAD.Vector(0, 0, -1) | |
| obj.setPropertyStatus("NormalDirection", "Hidden") | |
| def onDocumentRestored(self, obj): | |
| # migrate old App::PropertyFloat "Gravity_*" if exists | |
| try: | |
| grav_x = obj.getPropertyByName("Gravity_x") | |
| grav_y = obj.getPropertyByName("Gravity_y") | |
| grav_z = obj.getPropertyByName("Gravity_z") | |
| grav = FreeCAD.Vector(grav_x, grav_y, grav_z) | |
| self.addProperty(obj) | |
| obj.GravityAcceleration = constants.gravity() | |
| obj.GravityAcceleration *= grav.Length | |
| obj.GravityDirection = grav.normalize() | |
| obj.removeProperty("Gravity_x") | |
| obj.removeProperty("Gravity_y") | |
| obj.removeProperty("Gravity_z") | |
| return | |
| except: | |
| return | |
| def execute(self, obj): | |
| obj.GravityDirection.normalize() | |
| return False | |