5eeaeed104
Fixes #14242. In the current dev fusing an empty shape with a face or solid no longer works (probably introduced with #14169). The reason for starting with an empty shape was the assumption that the end result would then always have a default placement. But that is only correct if multiple objects are fused. In the new version of the code fusing no longer starts with an empty shape. The default placement issue is solved by always returning a compound. Additionally the value for the Area property is now taken after offsetting and fusing the faces.
165 lines
6.7 KiB
Python
165 lines
6.7 KiB
Python
# ***************************************************************************
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# * Copyright (c) 2009, 2010 Yorik van Havre <yorik@uncreated.net> *
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# * Copyright (c) 2009, 2010 Ken Cline <cline@frii.com> *
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# * Copyright (c) 2020 FreeCAD Developers *
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# * Copyright (c) 2023 FreeCAD Project Association *
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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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"""Provides the object code for the Facebinder object."""
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## @package facebinder
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# \ingroup draftobjects
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# \brief Provides the object code for the Facebinder object.
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## \addtogroup draftobjects
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# @{
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from PySide.QtCore import QT_TRANSLATE_NOOP
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import FreeCAD as App
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from draftobjects.base import DraftObject
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class Facebinder(DraftObject):
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"""The Draft Facebinder object"""
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def __init__(self,obj):
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super(Facebinder, self).__init__(obj, "Facebinder")
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_tip = QT_TRANSLATE_NOOP("App::Property","Linked faces")
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obj.addProperty("App::PropertyLinkSubList", "Faces", "Draft", _tip)
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_tip = QT_TRANSLATE_NOOP("App::Property","Specifies if splitter lines must be removed")
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obj.addProperty("App::PropertyBool","RemoveSplitter", "Draft", _tip)
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_tip = QT_TRANSLATE_NOOP("App::Property","An optional extrusion value to be applied to all faces")
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obj.addProperty("App::PropertyDistance","Extrusion", "Draft" , _tip)
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_tip = QT_TRANSLATE_NOOP("App::Property","An optional offset value to be applied to all faces")
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obj.addProperty("App::PropertyDistance","Offset", "Draft" , _tip)
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_tip = QT_TRANSLATE_NOOP("App::Property","This specifies if the shapes sew")
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obj.addProperty("App::PropertyBool","Sew", "Draft", _tip)
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_tip = QT_TRANSLATE_NOOP("App::Property","The area of the faces of this Facebinder")
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obj.addProperty("App::PropertyArea","Area", "Draft", _tip)
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obj.setEditorMode("Area", 1)
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def execute(self, obj):
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if self.props_changed_placement_only(obj):
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self.props_changed_clear()
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return
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if not obj.Faces:
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return
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import Part
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faces = []
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try:
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for sel in obj.Faces:
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for sub in sel[1]:
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if "Face" in sub:
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face = Part.getShape(sel[0], sub, needSubElement=True, retType=0)
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faces.append(face)
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except Exception:
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print("Draft: error building facebinder")
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return
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if not faces:
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return
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offset_val = obj.Offset.Value if hasattr(obj, "Offset") else 0
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extrusion_val = obj.Extrusion.Value if hasattr(obj, "Extrusion") else 0
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try:
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if offset_val:
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offsets = []
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for face in faces:
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if face.Surface.isPlanar():
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norm = face.normalAt(0, 0)
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dist = norm.multiply(offset_val)
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face.translate(dist)
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offsets.append(face)
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else:
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offset = face.makeOffsetShape(offset_val, 1e-7)
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offsets.extend(offset.Faces)
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faces = offsets
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shp = faces.pop()
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if faces:
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shp = shp.fuse(faces)
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area = shp.Area # take area after offsetting and fusing, but before extruding
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if extrusion_val:
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extrusions = []
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for face in shp.Faces:
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if face.Surface.isPlanar():
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extrusion = face.extrude(face.normalAt(0, 0).multiply(extrusion_val))
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extrusions.append(extrusion)
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else:
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extrusion = face.makeOffsetShape(extrusion_val, 1e-7, fill=True)
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extrusions.extend(extrusion.Solids)
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shp = extrusions.pop()
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if extrusions:
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shp = shp.fuse(extrusions)
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if len(shp.Faces) > 1:
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if getattr(obj, "Sew", True):
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shp.sewShape()
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if getattr(obj, "RemoveSplitter", True):
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shp = shp.removeSplitter()
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except Exception:
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print("Draft: error building facebinder")
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return
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if shp.__class__.__name__ == "Compound":
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obj.Shape = shp
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else:
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obj.Shape = Part.Compound([shp]) # nest in compound to ensure default Placement
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obj.Area = area
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self.props_changed_clear()
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def onChanged(self, obj, prop):
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self.props_changed_store(prop)
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def addSubobjects(self, obj, facelinks):
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"""adds facelinks to this facebinder"""
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# facelinks is an iterable or a selection set:
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# [(<Part::PartFeature>, ("3.Face3", "3.Face6"))]
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# or:
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# Gui.Selection.getSelectionEx("", 0)
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sels = obj.Faces
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for sel in facelinks:
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if isinstance(sel, list) or isinstance(sel, tuple):
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sel_obj, sel_subs = sel
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else:
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sel_obj = sel.Object
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sel_subs = sel.SubElementNames
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if sel_obj.Name != obj.Name:
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for sub in sel_subs:
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if "Face" in sub:
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sels.append((sel_obj, sub))
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obj.Faces = sels
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self.execute(obj)
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# Alias for compatibility with v0.18 and earlier
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_Facebinder = Facebinder
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## @}
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