FreeCAD macro to provide parametric defeaturing inside and outside of Part Design workbench

parametric_defeaturing.FCMacro

# -*- coding: utf-8 -*-
__version__ = "0.2021.10.10.rev2"
#__version__ = "0.2021.10.10.rev2"
#__title__ = "Parametric Defeaturing Macro"
#__author__ = "<TheMarkster> 2021"
#__license__ = "LGPL 2.1"
#__doc__ = "Parametric Defeaturing inside and outside Part Design."
#__usage__ = '''Select the faces to defeature and activate the tool'''
#import Part, FreeCADGui, FreeCAD
#from PySide import QtGui,QtCore
#BASENAME = "parametric_defeaturing"
#
#class ParametricDefeaturing:
#    def __init__(self,obj):
#        obj.addProperty("App::PropertyLinkSub","Faces","ParametricDefeaturing","Selected faces to be defeatured")
#        obj.addProperty("App::PropertyString", "Version", "ParametricDefeaturing", "version this object was created with").Version = __version__
#        if not hasattr(obj,"Refine"):
#            obj.addProperty("App::PropertyBool","Refine", "ParametricDefeaturing", "refine feature").Refine = False
#        obj.addProperty("App::PropertyBool","ClaimChildren","ParametricDefeaturing","whether to claim children in the tree").ClaimChildren = True
#        obj.addProperty("App::PropertyBool","EditFaces","ParametricDefeaturing","[Trigger] brings up face editing dialog").EditFaces = False
#        obj.addProperty("App::PropertyBool","DefeaturingSuccess","ParametricDefeaturing","If True, defeaturing succeeded").DefeaturingSuccess = False
#        obj.Proxy = self
#        self.fpName = obj.Name
#        self.editingMode = False
#
#    def onChanged(self, fp, prop):
#        if prop == "EditFaces" and fp.EditFaces == True:
#            t = QtCore.QTimer()
#            t.singleShot(50, self.editFaces) #avoid warning message about selection changing while committing data
#            fp.EditFaces = False
#
#    def getEditDialog(self):
#        return self.editFaces
#
#    def editFaces(self):
#        from PySide import QtGui
#        fp = FreeCAD.ActiveDocument.getObject(self.fpName)
#        if not fp.Faces:
#            return
#        object = fp.Faces[0]
#        if not object:
#            return
#        if not FreeCADGui.Control.activeDialog():
#            panel = TaskEditLinkSubPanel(fp,"Faces","Face")
#            FreeCADGui.Control.showDialog(panel)
#            self.editingMode = True #tells execute() not to hide the linked object
#        else:
#            self.editingMode=False
#            FreeCAD.Console.PrintError("Another task dialog is active.  Close that one and try again.\n")
#
#    def execute(self,fp):
#        if not fp.Faces:
#            return
#        fp.DefeaturingSuccess = True
#        faces = []
#        object = fp.Faces[0]
#        for fname in fp.Faces[1]:
#            faces.append(getattr(object.Shape,fname))
#        shape = object.Shape.defeaturing(faces)
#        if shape.Volume == object.Shape.Volume:
#            FreeCAD.Console.PrintError("Defeaturing failed.\n")
#            fp.DefeaturingSuccess = False
#        if fp.Refine:
#            shape = shape.removeSplitter()
#        if hasattr(fp,"BaseFeature") and hasattr(fp,"AddSubShape"):
#            if fp.BaseFeature and not shape.isNull():
#                pattern_shape = shape.fuse(fp.BaseFeature.Shape)
#                if fp.Refine:
#                    pattern_shape = pattern_shape.removeSplitter()
#                fp.AddSubShape = pattern_shape
#            else:
#                fp.AddSubShape = shape
#        fp.Shape = shape if shape and fp.DefeaturingSuccess else Part.Shape()
#        if not self.editingMode:
#            object.ViewObject.Visibility = True if not fp.DefeaturingSuccess else False
#
#class TaskEditLinkSubPanel: #simple editor for App::PropertyLinkSub
#    def __init__(self, obj, linkSubName, subNames,):
#        self.obj = obj
#        self.subNames = subNames
#        self.linkSubName = linkSubName #entire LinkSub property
#        self.linkObj = getattr(self.obj,linkSubName)[0]
#        self.subObjects = getattr(self.obj,linkSubName)[1]
#        self.form = QtGui.QWidget()
#        self.label1 = QtGui.QLabel("Select the "+self.subNames+" subobjects to use and click OK.\nThe ones already being utilized have been selected for you.")
#        layout=QtGui.QHBoxLayout()
#        layout.addWidget(self.label1)
#        self.form.setLayout(layout)
#        self.form.setWindowTitle('Edit '+self.subNames)
#        self.obj.ViewObject.Visibility = False
#        self.linkObj.ViewObject.Visibility = True
#        FreeCADGui.Selection.clearSelection()
#        for f in self.subObjects:
#            FreeCADGui.Selection.addSelection(FreeCAD.ActiveDocument.Name,self.linkObj.Name,f)
#        self.obj.Proxy.editingMode = True
#
#    def reject(self):
#        FreeCADGui.Control.closeDialog()
#        fp = self.obj
#        self.linkObj.ViewObject.Visibility = False
#        fp.ViewObject.Visibility = True
#        self.obj.Proxy.editingMode = False
#        FreeCADGui.activeDocument().resetEdit()
#        FreeCAD.ActiveDocument.recompute()
#
#    def accept(self):
#        FreeCADGui.ActiveDocument.resetEdit()
#        FreeCADGui.Control.closeDialog()
#        fp = self.obj
#        if not fp: #user deleted or closed document perhaps
#            return
#        selx = FreeCADGui.Selection.getSelectionEx()
#        if not selx:
#            FreeCAD.Console.PrintWarning("Nothing selected, leaving "+self.linkObj.Name+" unmodified.")
#            return
#        seNames = [sen for sen in selx[0].SubElementNames if self.subNames in sen]
#        setattr(self.obj,self.linkSubName,(selx[0].Object,seNames)) #allow user to select diffent object
#        self.linkObj = selx[0].Object
#        if hasattr(fp,"_Body") and fp._Body and self.linkObj not in fp._Body.Group:
#            fp._Body.Group += [self.linkObj]
#            if not self.linkObj.isDerivedFrom("PartDesign::Feature"):
#               fp.ClaimChildren = True
#        self.linkObj.ViewObject.Visibility = False
#        fp.ViewObject.Visibility = True
#        if hasattr(fp.Proxy,"editingMode"):
#            fp.Proxy.editingMode = False
#        FreeCAD.ActiveDocument.recompute()
#
#class ParametricDefeaturingVP:
#    def __init__(self, obj):
#        '''Set this object to the proxy object of the actual view provider'''
#        obj.Proxy = self
#    def attach(self, obj):
#        '''Setup the scene sub-graph of the view provider, this method is mandatory'''
#        self.Object = obj.Object
#
#    def updateData(self, fp, prop):
#        '''If a property of the handled feature has changed we have the chance to handle this here'''
#        # fp is the handled feature, prop is the name of the property that has changed
#        if prop == "DefeaturingSuccess":
#            fp.ViewObject.signalChangeIcon()
#
#    def getDisplayModes(self,obj):
#        '''Return a list of display modes.'''
#        modes=[]
#        modes.append("Flat Lines")
#        return modes
 
#    def getDefaultDisplayMode(self):
#        '''Return the name of the default display mode. It must be defined in getDisplayModes.'''
#        return "Flat Lines"
 
#    def setDisplayMode(self,mode):
#        '''Map the display mode defined in attach with those defined in getDisplayModes.\
#                Since they have the same names nothing needs to be done. This method is optional'''
#        return mode
 
#    def onChanged(self, vp, prop):
#        '''Here we can do something when a single property got changed'''
#        #FreeCAD.Console.PrintMessage("Change property: " + str(prop) + ""+chr(10))

#    def claimChildren(self):
#        if self.Object.ClaimChildren and self.Object.Faces and not self.Object.Shape.isNull():
#            return [self.Object.Faces[0]] #the object itself, not a face
#        else:
#            return []
#
#    def setEdit(self,vobj,modNum):
#        #FreeCAD.Console.PrintMessage("modNum = "+str(modNum)+"\n")
#        if modNum == 0:
#            vobj.Object.Proxy.editFaces()
#            return True
#        elif modNum == 3: #color per face
#            FreeCADGui.runCommand('Part_ColorPerFace',0)
#            return True
#
#    def onDelete(self, vobj, subelements):
#        if vobj.Object.Faces:
#            vobj.Object.Faces[0].ViewObject.Visibility = True
#            if not vobj.Object.Faces[0].isDerivedFrom("PartDesign::Feature"):
#                if hasattr(vobj.Object,"_Body") and vobj.Object._Body:
#                    grp = vobj.Object._Body.Group
#                    grp.remove(vobj.Object.Faces[0])
#                    vobj.Object._Body.Group = grp
#        #ensure next feature's BaseFeature property points to our BaseFeature object
#        if hasattr(vobj.Object,"_Body"):
#            solids = [sol for sol in vobj.Object._Body.Group if sol.isDerivedFrom("PartDesign::Feature") and sol.BaseFeature == vobj.Object]
#            for solid in solids: #leave open possibility for multiple objects using the same BaseFeature
#                solid.BaseFeature = vobj.Object.BaseFeature
#        return True
#
#    def getIcon(self):
#        '''Return the icon in XPM format which will appear in the tree view. This method is\
#                optional and if not defined a default icon is shown.'''
#        xpm ='''
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#"$X$Xp p M.M.M.M.M.M.M.M.M.M.T.E.Q.}.XX=.      d  X~.R.b.p.' I f f g l l l l z l P _ @.@.+.+.X.X.+...+...+.| +.| +.} +.+.p p $X$X",
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#"$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X",
#"$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X$X"
#};
#'''
#        if self.Object.DefeaturingSuccess:
#            return xpm
#        else:
#            return xpm.replace('none','red')
 
#    def __getstate__(self):
#        '''When saving the document this object gets stored using Python's json module.\
#                Since we have some un-serializable parts here -- the Coin stuff -- we must define this method\
#                to return a tuple of all serializable objects or None.'''
#        return None
 
#    def __setstate__(self,state):
#        '''When restoring the serialized object from document we have the chance to set some internals here.\
#                Since no data were serialized nothing needs to be done here.'''
#        return None



############
#if __name__ == "__main__":
#    FreeCAD.Console.PrintMessage("Please run "+BASENAME+".FCMacro rather than this file.\n")
############

#CODE_ENDS_HERE


def getBody(feature):
    doc = FreeCAD.ActiveDocument
    bodies = [obj for obj in doc.Objects if obj.TypeId == "PartDesign::Body"]
    for bod in bodies:
        if feature in bod.Group:
            return bod
    return None

def makeObject(PD):
    doc = FreeCAD.ActiveDocument
    body=None
    selobjs = FreeCADGui.Selection.getSelectionEx()
    if doc:
        doc.openTransaction("Create ParametricDefeaturing"+"s" if len(selobjs) > 1 else "")

        if selobjs:
            for selobj in selobjs:
                body = getBody(selobj.Object)
                if body:

                    parametric_defeaturing = body.newObject("PartDesign::FeatureAdditivePython","ParametricDefeaturing")
                else:
                    parametric_defeaturing = doc.addObject("Part::FeaturePython","ParametricDefeaturing")
                PD.ParametricDefeaturing(parametric_defeaturing)
                PD.ParametricDefeaturingVP(parametric_defeaturing.ViewObject)
                if body:
                    parametric_defeaturing.ClaimChildren = False

                if selobj.HasSubObjects:
                    faces = [name for name in selobj.SubElementNames if not "Vertex" in name and not "Edge" in name]
                    if faces:
                        parametric_defeaturing.Faces = (selobj.Object,faces)
                    else:
                        FreeCAD.Console.PrintError("No faces among selected subobjects.  Defeaturing only works on faces.\n")
                        doc.removeObject(parametric_defeaturing.Name)

                else:
                    FreeCAD.Console.PrintError("No faces selected.  Defeaturing only works on faces.\n")
                    doc.removeObject(parametric_defeaturing.Name)
        else:
            FreeCAD.Console.PrintMessage("No object selected to defeature.\n")
        doc.commitTransaction()

BASENAME = "parametric_defeaturing"



def writeFile():
    with open(py_file,"w") as outfile:
        for line in code.splitlines():
            if "#CODE_ENDS_HERE" in line:
                break
            if line.startswith('#'):
                if line == "# -*- coding: utf-8 -*-":
                    line = "#" + line
                outfile.write(line[1:]+"\n") #skip first character (#)



############
#if __name__ == "__main__":
#    makeObject(None)
#    raise Exception("quick exit for testing/debugging")
############

if __name__ == "__main__":
    import os
    fin = open(__file__, 'r')
    code = fin.read()
    fin.close()
    version = code.splitlines()[1][16:]
    real_path = os.path.realpath(__file__)
    dir_path = os.path.dirname(real_path)
    py_file = real_path.replace(".FCMacro",".py").replace('Parametric_Defeaturing','parametric_defeaturing')
    bHasFile = os.path.exists(py_file)
    noImport = False #user elects not to save import file

    if not bHasFile:
        from PySide import QtCore,QtGui
        window = QtGui.QApplication.activeWindow()
        mb = QtGui.QMessageBox()
        mb.setWindowTitle(BASENAME+" setup")
        mb.setIcon(mb.Information)
        mb.setStandardButtons(mb.Ok | mb.Cancel)
        mb.setDefaultButton(mb.Cancel)
        okBtn = mb.button(QtGui.QMessageBox.StandardButton.Ok)
        cancelBtn = mb.button(QtGui.QMessageBox.StandardButton.Cancel)
        okBtn.setText("Create file")
        cancelBtn.setText("Do not create file")
        caption = "In order for "+BASENAME+" objects to be parametric after saving and reloading file\n\
we need to create another file on this computer.  File to be created will be: \n\n"+py_file+"\n\n\
This makes it available to the system upon restarting FreeCAD and loading documents containing the \
"+BASENAME+" feature python objects.  Create file now?\n\n"
        mb.setText(caption)
        ret = mb.exec_()
        if ret == mb.Ok:
            writeFile()
            QtGui.QMessageBox.information(window,"Success","File successfully created.  Please note: if you uninstall "+BASENAME+" macro you need to manually remove "+py_file+", too.\n")
        else:
            new_lines = []
            for line in code.splitlines():
                if line.startswith('#'):
                    if "CODE_ENDS_HERE" in line:
                        break
                    if line == "# -*- coding: utf-8 -*-":
                        new_lines.append(line+"\n")
                        continue
                    new_lines.append(line[1:]+"\n")
            code = "".join(new_lines)

            #credit to Mila Nautikus for his answer to a question on stackoverflow, which I modified here
            #in this example the filename is parametric_defeaturing.py
            #https://stackoverflow.com/questions/5362771/how-to-load-a-module-from-code-in-a-string

            ##########
            import sys, importlib
            my_name = 'parametric_defeaturing' #filename = parametric_defeaturing.py, so this must be 'parametric_defeaturing'
            my_spec = importlib.util.spec_from_loader(my_name, loader=None)

            parametric_defeaturing = importlib.util.module_from_spec(my_spec)

            exec(code, parametric_defeaturing.__dict__)
            sys.modules['parametric_defeaturing'] = parametric_defeaturing
            makeObject(parametric_defeaturing)
            noImport = True

    if not noImport: #don't never use no double negatives

        import parametric_defeaturing as PD
        import addonmanager_utilities as utils

        if PD.__version__ != __version__:
            writeFile()
            from PySide import QtCore,QtGui
            window = QtGui.QApplication.activeWindow()
            mbox = QtGui.QMessageBox()
            mbox.setWindowTitle(BASENAME+" updated")

            mbox.setText(BASENAME+".py has been updated to version "+__version__+". \
You must restart FreeCAD for the new changes to take effect and to use the macro.")
            mbox.setIcon(mbox.Warning)
            mbox.setStandardButtons(mbox.Ok | mbox.Cancel)
            mbox.setDefaultButton(mbox.Cancel)
            okBtn = mbox.button(QtGui.QMessageBox.StandardButton.Ok)
            cancelBtn = mbox.button(QtGui.QMessageBox.StandardButton.Cancel)
            okBtn.setText("Restart now")
            cancelBtn.setText("Restart later")
            ret = mbox.exec_()
            if ret == mbox.Ok:
                QtCore.QTimer.singleShot(1000, utils.restart_freecad)
        else:
            makeObject(PD)