340 lines
15 KiB
Python
340 lines
15 KiB
Python
#***************************************************************************
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#* *
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#* Copyright (c) 2016 - Victor Titov (DeepSOIC) *
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#* <vv.titov@gmail.com> *
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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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__title__= "Lattice SubLink feature for FreeCAD"
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__author__ = "DeepSOIC"
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__doc__ = "Lattice SubLink is like Draft Facebinder, but for edges and vertices too."
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from lattice2Common import *
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from lattice2BaseFeature import isObjectLattice
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import lattice2Markers as markers
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import FreeCAD as App
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# -------------------------- feature --------------------------------------------------
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def makeSubLink(name):
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'''makeSubLink(name): makes a SubLink object.'''
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obj = App.ActiveDocument.addObject("Part::FeaturePython",name)
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LatticeSubLink(obj)
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ViewProviderSubLink(obj.ViewObject)
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return obj
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class LatticeSubLink:
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"The Lattice SubLink object"
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def __init__(self,obj):
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self.Type = "SubLink"
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obj.addProperty("App::PropertyLink","Object","Lattice SubLink","Object to extract an element from")
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obj.addProperty("App::PropertyStringList","SubNames","Lattice SubLink", "List of elements to extract. Example: Edge5,Edge8")
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obj.Proxy = self
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def execute(self,selfobj):
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#validity check
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if isObjectLattice(selfobj.Object):
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import lattice2Executer
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lattice2Executer.warning(selfobj,"A generic shape is expected, but a placement/array was supplied. It will be treated as a generic shape.")
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rst = [] #variable to receive the final list of shapes
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lnkobj = selfobj.Object
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for subname in selfobj.SubNames:
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subname = subname.strip()
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if len(subname)==0:
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raise ValueError("Empty subname! Not allowed.")
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if 'Face' in subname:
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index = int(subname.replace('Face',''))-1
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rst.append(lnkobj.Shape.Faces[index])
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elif 'Edge' in subname:
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index = int(subname.replace('Edge',''))-1
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rst.append(lnkobj.Shape.Edges[index])
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elif 'Vertex' in subname:
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index = int(subname.replace('Vertex',''))-1
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rst.append(lnkobj.Shape.Vertexes[index])
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else:
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lattice2Executer.warning(selfobj,"Unexpected subelement name: "+subname+". Trying to extract it with .Shape.getElement()...")
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rst.append(linkobj.Shape.getElement(subname))
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if len(rst) == 0:
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scale = 1.0
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try:
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if selfobj.Object:
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scale = selfobj.Object[0].Shape.BoundBox.DiagonalLength/math.sqrt(3)
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except Exception as err:
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App.Console.PrintError(selfobj.Name+": Failed to estimate size of marker shape")
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if scale < DistConfusion * 100:
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scale = 1.0
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selfobj.Shape = markers.getNullShapeShape(scale)
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raise ValueError('Nothing is linked, apparently!') #Feeding empty compounds to FreeCAD seems to cause rendering issues, otherwise it would have been a good idea to output nothing.
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if len(rst) > 1:
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selfobj.Shape = Part.makeCompound(rst)
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else: # don't make compound of one shape, output it directly
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sh = rst[0]
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sh.transformShape(sh.Placement.toMatrix(),True) #True = make copy
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sh.Placement = selfobj.Placement
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selfobj.Shape = sh
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try:
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self.analyzeShape(selfobj)
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except Exception as err:
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App.Console.PrintError(selfobj.Name+": analyzeShape: "+err.message+"\n")
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def analyzeShape(self,selfobj):
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self.updatedProperties = set()
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try:
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sh = selfobj.Shape
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self.assignProp(selfobj,"App::PropertyString","ShapeType",sh.ShapeType)
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if sh.ShapeType == "Compound":
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self.assignProp(selfobj,"App::PropertyInteger","NumChildren",len(sh.childShapes(False,False)))
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elif sh.ShapeType == "Face":
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self.assignProp(selfobj,"App::PropertyFloat","Area",sh.Area)
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typelist = ["BSplineSurface",
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"BezierSurface",
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"Cone",
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"Cylinder",
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"OffsetSurface",
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"Plane",
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"PlateSurface",
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"RectangularTrimmedSurface",
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"Sphere",
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"SurfaceOfExtrusion",
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"SurfaceOfRevolution",
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"Toroid",
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]
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surf = sh.Surface
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for typename in typelist:
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if type(surf) is getattr(Part, typename):
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break
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typename = None
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self.assignProp(selfobj,"App::PropertyString","FaceType",typename)
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self.transplant_all_attributes(selfobj,surf,"Face")
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elif sh.ShapeType == "Edge":
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self.assignProp(selfobj,"App::PropertyFloat","Length",sh.Length)
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typelist = ["Arc",
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"ArcOfCircle",
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"ArcOfEllipse",
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"ArcOfHyperbola",
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"ArcOfParabola",
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"BSplineCurve",
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"BezierCurve",
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"Circle",
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"Ellipse",
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"Hyperbola",
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"Line",
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"OffsetCurve",
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"Parabola",
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]
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crv = sh.Curve
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for typename in typelist:
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if type(crv) is getattr(Part, typename):
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break
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typename = None
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self.assignProp(selfobj,"App::PropertyString","EdgeType",typename)
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self.transplant_all_attributes(selfobj,crv,"Edge")
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elif sh.ShapeType == "Vertex":
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self.assignProp(selfobj,"App::PropertyVector","Position",sh.Point)
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finally:
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#remove properties that haven't been updated
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for propname in selfobj.PropertiesList:
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if selfobj.getGroupOfProperty(propname) == "info":
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if not (propname in self.updatedProperties):
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selfobj.removeProperty(propname)
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def assignProp(self, selfobj, proptype, propname, propvalue):
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if not hasattr(selfobj,propname):
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selfobj.addProperty(proptype, propname,"info")
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selfobj.setEditorMode(propname,1) #set read-only
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setattr(selfobj,propname,propvalue)
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self.updatedProperties.add(propname)
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def transplant_all_attributes(self, selfobj, source, prefix):
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for attrname in dir(source):
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if attrname[0]=="_": continue
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try:
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attr = getattr(source,attrname)
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except Exception:
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continue
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if callable(attr): continue
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propname = prefix+attrname[0].upper()+attrname[1:]
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if type(attr) is int:
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self.assignProp(selfobj,"App::PropertyInteger",propname,attr)
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if type(attr) is float:
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self.assignProp(selfobj,"App::PropertyFloat",propname,attr)
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if type(attr) is str:
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self.assignProp(selfobj,"App::PropertyString",propname,attr)
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if type(attr) is App.Vector:
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self.assignProp(selfobj,"App::PropertyVector",propname,attr)
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if type(attr) is list:
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self.assignProp(selfobj,"App::PropertyInteger",propname+"Count",len(attr))
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class ViewProviderSubLink:
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"A View Provider for the SubLink object"
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def __init__(self,vobj):
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vobj.Proxy = self
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def getIcon(self):
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if len(self.Object.SubNames) == 1:
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subname = self.Object.SubNames[0]
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if 'Face' in subname:
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return getIconPath("Lattice2_SubLink_Face.svg")
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elif 'Edge' in subname:
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return getIconPath("Lattice2_SubLink_Edge.svg")
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elif 'Vertex' in subname:
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return getIconPath("Lattice2_SubLink_Vertex.svg")
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return getIconPath("Lattice2_SubLink.svg")
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def attach(self, vobj):
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self.ViewObject = vobj
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self.Object = vobj.Object
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def setEdit(self,vobj,mode):
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return False
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def unsetEdit(self,vobj,mode):
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return
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def __getstate__(self):
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return None
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def __setstate__(self,state):
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return None
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def claimChildren(self):
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return []
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def CreateSubLink(object, subnames):
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#stabilize links
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subnames = list(subnames) #'tuple' object does not support item assignment; SubElementNames of SelectionObject is a tuple
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try:
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cnt_faces = 0
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cnt_edges = 0
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cnt_vertexes = 0
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cnt_somethingelse = 0
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n_faces = None #vars to receive counts of respective subelements in the shape of object. Not prefilling them, for speed - filled only as needed
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n_edges = None
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n_vertexes = None
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for i in range(len(subnames)):
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subname = subnames[i].strip()
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if 'Face' in subname:
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index = int(subname.replace('Face',''))
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if n_faces is None:
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n_faces = len(object.Shape.Faces)
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if (index-1)*2 > n_faces:
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index = index - n_faces
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subname = "Face"+str(index)
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cnt_faces += 1
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elif 'Edge' in subname:
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index = int(subname.replace('Edge',''))
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if n_edges is None:
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n_edges = len(object.Shape.Edges)
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if (index-1)*2 > n_edges:
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index = index - n_edges
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subname = "Edge"+str(index)
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cnt_edges += 1
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elif 'Vertex' in subname:
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index = int(subname.replace('Vertex',''))
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if n_vertexes is None:
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n_vertexes = len(object.Shape.Vertexes)
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if (index-1)*2 > n_vertexes:
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index = index - n_vertexes
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subname = "Vertex"+str(index)
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cnt_vertexes += 1
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else:
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cnt_somethingelse += 1
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pass #something unexpected, pass through unchanged
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subnames[i] = subname
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except Exception:
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pass
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FreeCADGui.addModule("lattice2SubLink")
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FreeCADGui.addModule("lattice2Executer")
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name = object.Name+"_"+subnames[0] if len(subnames)==1 else "SubLink"
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FreeCADGui.doCommand("f = lattice2SubLink.makeSubLink(name = "+repr(name)+")")
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label = unicode(subnames[0] if len(subnames)==1 else "subelements") + u" of " + object.Label
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FreeCADGui.doCommand("f.Label = "+repr(label))
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FreeCADGui.doCommand("f.Object = App.ActiveDocument."+object.Name)
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FreeCADGui.doCommand("f.SubNames = "+repr(subnames))
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FreeCADGui.doCommand("lattice2Executer.executeFeature(f)")
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if cnt_vertexes > 0 and cnt_faces+cnt_edges+cnt_somethingelse == 0: #only vertices selected - make them bigger to make them visible
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FreeCADGui.doCommand("f.ViewObject.PointSize = 10")
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FreeCADGui.doCommand("f.Object.ViewObject.hide()")
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FreeCADGui.doCommand("Gui.Selection.addSelection(f)")
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FreeCADGui.doCommand("f = None")
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return App.ActiveDocument.ActiveObject
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def cmdSubLink():
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sel = FreeCADGui.Selection.getSelectionEx()
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if len(sel) == 0:
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raise SelectionError("Bad selection", "Please select some subelements from one object, first.")
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if len(sel) > 1:
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raise SelectionError("Bad selection", "You have selected subelements from more than one object. Not allowed. You can only select subelements of one object.")
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if len(sel[0].SubElementNames)==0:
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raise SelectionError("Bad selection", "Please select some subelements, not the whole object.")
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App.ActiveDocument.openTransaction("Create SubLink")
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CreateSubLink(sel[0].Object,sel[0].SubElementNames)
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deselect(sel)
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App.ActiveDocument.commitTransaction()
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# -------------------------- /common stuff --------------------------------------------------
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# -------------------------- Gui command --------------------------------------------------
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class _CommandSubLink:
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"Command to create SubLink feature"
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def GetResources(self):
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return {'Pixmap' : getIconPath("Lattice2_SubLink.svg"),
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'MenuText': QtCore.QT_TRANSLATE_NOOP("Lattice2_SubLink","SubLink"),
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'Accel': "",
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'ToolTip': QtCore.QT_TRANSLATE_NOOP("Lattice2_SubLink","SubLink: extract and analyse individual vertices, edges and faces from shapes")}
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def Activated(self):
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try:
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if len(FreeCADGui.Selection.getSelection())==0:
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infoMessage("SubLink",
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"'SubLink' command. Extracts selected faces, edges or vertices from the object.\n\n"+
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"Please select subelements of one object, then invoke the command.")
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return
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cmdSubLink()
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except Exception as err:
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msgError(err)
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def IsActive(self):
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if App.ActiveDocument:
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return True
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else:
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return False
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FreeCADGui.addCommand('Lattice2_SubLink', _CommandSubLink())
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exportedCommands = ['Lattice2_SubLink']
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# -------------------------- /Gui command --------------------------------------------------
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