File size: 4,073 Bytes
985c397 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 | # ***************************************************************************
# * 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
|