ecc05545c1
This uses the default value that can be passed to getattr to simplify code that uses it. By choosing an appropriate default value, a separate call to hasattr can be avoided and in some cases duplicate code can be avoided. This applies this trick where possible in wire.py and circle.py. This commit does not change behavior.
242 lines
10 KiB
Python
242 lines
10 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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# * *
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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 Wire (Polyline) object."""
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## @package wire
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# \ingroup draftobjects
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# \brief Provides the object code for the Wire (Polyline) object.
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## \addtogroup draftobjects
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# @{
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import math
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from PySide.QtCore import QT_TRANSLATE_NOOP
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import FreeCAD as App
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import DraftGeomUtils
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import DraftVecUtils
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from draftutils.utils import get_param
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from draftobjects.base import DraftObject
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class Wire(DraftObject):
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"""The Wire object"""
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def __init__(self, obj):
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super(Wire, self).__init__(obj, "Wire")
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_tip = QT_TRANSLATE_NOOP("App::Property",
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"The vertices of the wire")
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obj.addProperty("App::PropertyVectorList","Points", "Draft",_tip)
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_tip = QT_TRANSLATE_NOOP("App::Property",
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"If the wire is closed or not")
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obj.addProperty("App::PropertyBool","Closed", "Draft",_tip)
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_tip = QT_TRANSLATE_NOOP("App::Property",
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"The base object is the wire, it's formed from 2 objects")
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obj.addProperty("App::PropertyLink","Base", "Draft",_tip)
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_tip = QT_TRANSLATE_NOOP("App::Property",
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"The tool object is the wire, it's formed from 2 objects")
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obj.addProperty("App::PropertyLink","Tool", "Draft",_tip)
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_tip = QT_TRANSLATE_NOOP("App::Property",
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"The start point of this line")
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obj.addProperty("App::PropertyVectorDistance","Start", "Draft",_tip)
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_tip = QT_TRANSLATE_NOOP("App::Property",
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"The end point of this line")
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obj.addProperty("App::PropertyVectorDistance","End", "Draft",_tip)
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_tip = QT_TRANSLATE_NOOP("App::Property",
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"The length of this line")
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obj.addProperty("App::PropertyLength","Length", "Draft",_tip)
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_tip = QT_TRANSLATE_NOOP("App::Property",
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"Radius to use to fillet the corners")
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obj.addProperty("App::PropertyLength","FilletRadius", "Draft",_tip)
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_tip = QT_TRANSLATE_NOOP("App::Property",
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"Size of the chamfer to give to the corners")
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obj.addProperty("App::PropertyLength","ChamferSize", "Draft",_tip)
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_tip = QT_TRANSLATE_NOOP("App::Property",
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"Create a face if this object is closed")
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obj.addProperty("App::PropertyBool","MakeFace", "Draft",_tip)
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_tip = QT_TRANSLATE_NOOP("App::Property",
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"The number of subdivisions of each edge")
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obj.addProperty("App::PropertyInteger","Subdivisions", "Draft",_tip)
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_tip = QT_TRANSLATE_NOOP("App::Property",
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"The area of this object")
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obj.addProperty("App::PropertyArea","Area", "Draft",_tip)
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obj.MakeFace = get_param("fillmode",True)
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obj.Closed = False
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def execute(self, obj):
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import Part
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plm = obj.Placement
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if obj.Base and (not obj.Tool):
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if obj.Base.isDerivedFrom("Sketcher::SketchObject"):
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shape = obj.Base.Shape.copy()
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if obj.Base.Shape.isClosed():
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if getattr(obj,"MakeFace",True):
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shape = Part.Face(shape)
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obj.Shape = shape
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elif obj.Base and obj.Tool:
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if hasattr(obj.Base,'Shape') and hasattr(obj.Tool,'Shape'):
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if (not obj.Base.Shape.isNull()) and (not obj.Tool.Shape.isNull()):
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sh1 = obj.Base.Shape.copy()
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sh2 = obj.Tool.Shape.copy()
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shape = sh1.fuse(sh2)
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if DraftGeomUtils.isCoplanar(shape.Faces):
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shape = DraftGeomUtils.concatenate(shape)
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obj.Shape = shape
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p = []
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for v in shape.Vertexes: p.append(v.Point)
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if obj.Points != p: obj.Points = p
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elif obj.Points:
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if obj.Points[0] == obj.Points[-1]:
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if not obj.Closed: obj.Closed = True
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obj.Points.pop()
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if obj.Closed and (len(obj.Points) > 2):
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pts = obj.Points
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if getattr(obj,"Subdivisions",0) > 0:
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npts = []
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for i in range(len(pts)):
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p1 = pts[i]
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npts.append(pts[i])
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if i == len(pts)-1:
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p2 = pts[0]
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else:
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p2 = pts[i+1]
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v = p2.sub(p1)
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v = DraftVecUtils.scaleTo(v,v.Length/(obj.Subdivisions+1))
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for j in range(obj.Subdivisions):
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npts.append(p1.add(App.Vector(v).multiply(j+1)))
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pts = npts
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shape = Part.makePolygon(pts+[pts[0]])
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if "ChamferSize" in obj.PropertiesList:
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if obj.ChamferSize.Value != 0:
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w = DraftGeomUtils.filletWire(shape,obj.ChamferSize.Value,chamfer=True)
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if w:
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shape = w
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if "FilletRadius" in obj.PropertiesList:
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if obj.FilletRadius.Value != 0:
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w = DraftGeomUtils.filletWire(shape,obj.FilletRadius.Value)
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if w:
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shape = w
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try:
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if getattr(obj,"MakeFace",True):
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shape = Part.Face(shape)
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except Part.OCCError:
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pass
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else:
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edges = []
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pts = obj.Points[1:]
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lp = obj.Points[0]
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for p in pts:
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if not DraftVecUtils.equals(lp,p):
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if getattr(obj,"Subdivisions",0) > 0:
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npts = []
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v = p.sub(lp)
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v = DraftVecUtils.scaleTo(v,v.Length/(obj.Subdivisions+1))
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edges.append(Part.LineSegment(lp,lp.add(v)).toShape())
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lv = lp.add(v)
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for j in range(obj.Subdivisions):
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edges.append(Part.LineSegment(lv,lv.add(v)).toShape())
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lv = lv.add(v)
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else:
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edges.append(Part.LineSegment(lp,p).toShape())
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lp = p
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try:
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shape = Part.Wire(edges)
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except Part.OCCError:
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print("Error wiring edges")
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shape = None
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if "ChamferSize" in obj.PropertiesList:
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if obj.ChamferSize.Value != 0:
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w = DraftGeomUtils.filletWire(shape,obj.ChamferSize.Value,chamfer=True)
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if w:
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shape = w
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if "FilletRadius" in obj.PropertiesList:
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if obj.FilletRadius.Value != 0:
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w = DraftGeomUtils.filletWire(shape,obj.FilletRadius.Value)
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if w:
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shape = w
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if shape:
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obj.Shape = shape
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if hasattr(obj,"Area") and hasattr(shape,"Area"):
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obj.Area = shape.Area
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if hasattr(obj,"Length"):
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obj.Length = shape.Length
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obj.Placement = plm
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obj.positionBySupport()
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self.onChanged(obj,"Placement")
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def onChanged(self, obj, prop):
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if prop == "Start":
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pts = obj.Points
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invpl = App.Placement(obj.Placement).inverse()
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realfpstart = invpl.multVec(obj.Start)
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if pts:
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if pts[0] != realfpstart:
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pts[0] = realfpstart
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obj.Points = pts
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elif prop == "End":
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pts = obj.Points
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invpl = App.Placement(obj.Placement).inverse()
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realfpend = invpl.multVec(obj.End)
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if len(pts) > 1:
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if pts[-1] != realfpend:
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pts[-1] = realfpend
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obj.Points = pts
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elif prop == "Length":
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if obj.Shape and not obj.Shape.isNull():
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if obj.Length.Value != obj.Shape.Length:
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if len(obj.Points) == 2:
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v = obj.Points[-1].sub(obj.Points[0])
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v = DraftVecUtils.scaleTo(v,obj.Length.Value)
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obj.Points = [obj.Points[0],obj.Points[0].add(v)]
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elif prop == "Placement":
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pl = App.Placement(obj.Placement)
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if len(obj.Points) >= 2:
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displayfpstart = pl.multVec(obj.Points[0])
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displayfpend = pl.multVec(obj.Points[-1])
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if obj.Start != displayfpstart:
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obj.Start = displayfpstart
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if obj.End != displayfpend:
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obj.End = displayfpend
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# Alias for compatibility with v0.18 and earlier
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_Wire = Wire
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## @}
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