Resample: re-implement, + reference placement support

Now uses ValueSeriesGenerator for extra flexibility

InitGui.py

@@ -63,7 +63,7 @@ class Lattice2Workbench (Workbench):
             + Lattice2.ArrayFeatures.JoinArrays.exportedCommands
             + Lattice2.ArrayFeatures.ArrayFilter.exportedCommands
             + Lattice2.ArrayFeatures.ProjectArray.exportedCommands
-            + Lattice2.ArrayFeatures.Resample.exportedCommands
+            + Lattice2.ArrayFeatures.Resample2.exportedCommands
             + Lattice2.ArrayFeatures.PopulateCopies.exportedCommands
             + Lattice2.ArrayFeatures.PopulateChildren.exportedCommands
             + Lattice2.ArrayFeatures.Mirror.exportedCommands

Lattice2ArrayFeatures.py

@@ -12,4 +12,5 @@ import lattice2PopulateChildren     as PopulateChildren
 import lattice2PopulateCopies       as PopulateCopies  
 import lattice2ProjectArray         as ProjectArray    
 import lattice2Resample             as Resample        
+import lattice2Resample2            as Resample2        
 import lattice2Mirror               as Mirror

Lattice2CodeModules.py

@@ -8,4 +8,5 @@ import lattice2Markers as Markers
 import lattice2ValueSeriesGenerator as ValueSeriesGenerator
 import lattice2ShapeCopy as ShapeCopy
 import lattice2Subsequencer as Subsequencer
-import lattice2Utils as Utils
+import lattice2Utils as Utils
+import lattice2CoinGlue as CoinGlue

PyResources/icons.qrc

@@ -34,15 +34,19 @@
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         <file>icons/Lattice2_PopulateChildren_Move.svg</file>
         <file>icons/Lattice2_PopulateChildren_Normal.svg</file>        
+        <file>icons/Lattice2_PopulateChildren_Ref.svg</file>
         <file>icons/Lattice2_PopulateChildren_Plms_Array.svg</file>
         <file>icons/Lattice2_PopulateChildren_Plms_Normal.svg</file>
         <file>icons/Lattice2_PopulateChildren_Plms_Move.svg</file>
+        <file>icons/Lattice2_PopulateChildren_Plms_Ref.svg</file>
         <file>icons/Lattice2_PopulateCopies_Array.svg</file>
         <file>icons/Lattice2_PopulateCopies_Move.svg</file>
         <file>icons/Lattice2_PopulateCopies_Normal.svg</file>        
+        <file>icons/Lattice2_PopulateCopies_Ref.svg</file>
         <file>icons/Lattice2_PopulateCopies_Plms_Array.svg</file>
         <file>icons/Lattice2_PopulateCopies_Plms_Normal.svg</file>
         <file>icons/Lattice2_PopulateCopies_Plms_Move.svg</file>
+        <file>icons/Lattice2_PopulateCopies_Plms_Ref.svg</file>
         <file>icons/Lattice2_ProjectArray.svg</file>
         <file>icons/Lattice2_RecomputeLocker_ForceRecompute.svg</file>
         <file>icons/Lattice2_RecomputeLocker_Locked.svg</file>

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lattice2ArrayFilter.py

@@ -70,6 +70,20 @@ class LatticeArrayFilter(lattice2BaseFeature.LatticeFeature):
         
         obj.Proxy = self
         
+    def updateReadonlyness(self, selfobj, bypass_set = set()):
+        my_hidden = set([
+            'ReferencePlacement',
+            'ReferencePlacementLink', 
+            'ReferencePlacementLinkIndex',
+        ])
+        super(LatticeArrayFilter, self).updateReadonlyness(selfobj, bypass_set | my_hidden)
+        for prop in my_hidden:
+            if prop in bypass_set: continue
+            if hasattr(selfobj, prop):
+                selfobj.setEditorMode(prop, 2)
+    
+    def recomputeReferencePlm(self, selfobj, selfplacements):
+        pass #suppress standard refplm recompute
 
     def derivedExecute(self,obj):
         #validity check
@@ -128,7 +142,9 @@ class LatticeArrayFilter(lattice2BaseFeature.LatticeFeature):
                     output.append(input[i])
         else:
             raise ValueError('Filter mode not implemented:'+obj.FilterType)
-                            
+        
+        self.setReferencePlm(obj, lattice2BaseFeature.getReferencePlm(obj.Base))
+                    
         return output
         
         
@@ -192,7 +208,7 @@ def CreateLatticeArrayFilter(name,mode):
     iLtc = 0 #index of lattice object in selection
     iStc = 1 #index of stencil object in selection
     for i in range(0,len(sel)):
-        if lattice2BaseFeature.isObjectLattice(sel[i]):
+        if lattice2BaseFeature.isObjectLattice(sel[i].Object):
             iLtc = i
             iStc = i-1 #this may give negative index, but python accepts negative indexes
             break

lattice2AttachablePlacement.py

@@ -40,7 +40,7 @@ EDIT_ATTACHMENT = 56 # Viewprovider edit mode number
 def makeAttachablePlacement(name):
     '''makeAttachablePlacement(name): makes an attachable Placement object.'''
     if Compat.attach_extension_era:
-        obj = lattice2BaseFeature.makeLatticeFeature(name, AttachablePlacement, ViewProviderAttachablePlacement, no_disable_attacher= True)
+        obj = lattice2BaseFeature.makeLatticeFeature(name, AttachablePlacement, ViewProviderAttachablePlacement)
     else:
         #obsolete!
         obj = FreeCAD.ActiveDocument.addObject("Part::AttachableObjectPython",name)
@@ -53,15 +53,12 @@ def makeAttachablePlacement(name):
 class AttachableFeature(lattice2BaseFeature.LatticeFeature):
     "Base class for attachable features"
     
+    attachable = True
+    
     def derivedInit(self,obj):
         if Compat.attach_extension_era:
             if not obj.hasExtension('Part::AttachExtension'): #PartDesign-related hack: the placement already has attachextension if created in PD
                 obj.addExtension('Part::AttachExtensionPython', None)
-        
-    def onDocumentRestored(self, selfobj):
-        #PartDesign-related hack: this dummy override disables disabling of attacher
-        pass 
-
 
 class AttachablePlacement(AttachableFeature):
     "Attachable Lattice Placement object"
@@ -122,9 +119,26 @@ class AttachedPlacementSubsequence(lattice2BaseFeature.LatticeFeature):
         
         obj.addProperty("App::PropertyLink", "Base", "Lattice Attached Placement Subsequence", "Link to Lattice Attached Placement, which is to be subsequenced.")
         obj.addProperty("App::PropertyString", "RefIndexFilter","Lattice Attached Placement Subsequence","Sets which references of attachment to cycle through children. '0000' = no cycle, '1000' = cycle only ref1. '' = cycle all if possible")
-        obj.addProperty("App::PropertyEnumeration", "CycleMode","Lattice Attached Placement Subsequence", "How to cycle through chidren. Open = advance each link till one reaches the end of array. Periodic = if array end reached, continue from begin if any children left.")
+        obj.addProperty("App::PropertyEnumeration", "CycleMode","Lattice Attached Placement Subsequence", "How to cycle through children. Open = advance each link till one reaches the end of array. Periodic = if array end reached, continue from begin if any children left.")
         obj.CycleMode = ['Open','Periodic']
-        
+    
+    def assureProperties(self, selfobj, creating_new = False):
+        super(AttachedPlacementSubsequence, self).assureProperties(selfobj, creating_new)
+        created = self.assureProperty(selfobj, 
+            'App::PropertyEnumeration', 
+            'ReferencePlacementOption', 
+            ['external', 'origin', 'inherit', 'first placement', 'last placement'],
+            "Lattice Attached Placement Subsequence", 
+            "Reference placement, corresponds to the original occurrence of the object to be populated. 'inherit' = use reference placement of the base attached placement."
+        )
+        if created:
+            selfobj.ReferencePlacementOption = 'inherit'
+
+    def recomputeReferencePlm(self, selfobj, selfplacements): #override
+        if selfobj.ReferencePlacementOption == 'external':
+            super(AttachedPlacementSubsequence, self).recomputeReferencePlm(selfobj, selfplacements)
+        #the remaining options are handled in derivedExecute
+    
     def derivedExecute(self,obj):
         attacher = Part.AttachEngine(screen(obj.Base).AttacherType)
         attacher.readParametersFromFeature(screen(obj.Base))
@@ -133,10 +147,31 @@ class AttachedPlacementSubsequence(lattice2BaseFeature.LatticeFeature):
         sublinks = Subsequencer.Subsequence_auto(attacher.References, 
                                                  loop= ('Till end' if obj.CycleMode == 'Open' else 'All around'), 
                                                  index_filter= ifilt)
+        
+        deref =  obj.Base.Placement.inverse()
+        basearray = [deref.multiply(plm) for plm in lattice2BaseFeature.getPlacementsList(obj.Base)]
+        
         plms = []
         for lnkval in sublinks:
             attacher.References = lnkval
-            plms.append(attacher.calculateAttachedPlacement(screen(obj.Base).Placement))
+            attplm = attacher.calculateAttachedPlacement(obj.Base.Placement)
+            plms.extend([attplm.multiply(plm) for plm in basearray])
+        
+        #reference
+        ref = obj.ReferencePlacementOption
+        if ref == 'external':
+            pass #gets done in recomputeReferencePlm
+        elif ref == 'origin':
+            self.setReferencePlm(obj, None)
+        elif ref == 'inherit':
+            self.setReferencePlm(obj, lattice2BaseFeature.getReferencePlm(obj.Base))
+        elif ref == 'first placement':
+            self.setReferencePlm(obj, plms[0])
+        elif ref == 'last placement':
+            self.setReferencePlm(obj, plms[-1])
+        else:
+            raise NotImplementedError("Reference option not implemented: " + ref)
+        
         return plms
 
 class ViewProviderAttachedPlacementSubsequence(lattice2BaseFeature.ViewProviderLatticeFeature):

lattice2BaseFeature.py

@@ -33,6 +33,7 @@ import lattice2CompoundExplorer as LCE
 import lattice2Markers
 import lattice2Executer
 from lattice2ShapeCopy import shallowCopy
+import lattice2CoinGlue as CoinGlue
 
 
 def getDefLatticeFaceColor():
@@ -49,11 +50,10 @@ def getDefShapeColor():
     return (r/255.0, g/255.0, b/255.0, (255-o)/255.0)
     
 
-def makeLatticeFeature(name, AppClass, ViewClass, no_body = False, no_disable_attacher = False):
+def makeLatticeFeature(name, AppClass, ViewClass, no_body = False):
     '''makeLatticeFeature(name, AppClass, ViewClass, no_body = False): makes a document object for a LatticeFeature-derived object.
     
-    no_body: if False, the Lattice object will end up in an active body, and Part2DObject will be used.
+    no_body: if False, the Lattice object will end up in an active body, and Part2DObject will be used.'''
-    no_disable_attacher: if True, attachment properties of Part2DObject won't be hidden'''
     
     body = activeBody()
     if body and not no_body:
@@ -73,15 +73,16 @@ def makeLatticeFeature(name, AppClass, ViewClass, no_body = False, no_disable_at
     
 def isObjectLattice(documentObject):
     '''isObjectLattice(documentObject): When operating on the object, it is to be treated as a lattice object. If False, treat as a regular shape.'''
+    transform, src = source(documentObject)
     ret = False
-    if hasattr(documentObject,"isLattice"):
+    if hasattr(src,'isLattice'):
-        if 'On' in documentObject.isLattice:
+        if 'On' in src.isLattice:
             ret = True
-    if documentObject.isDerivedFrom('PartDesign::ShapeBinder'):
+    #if documentObject.isDerivedFrom('PartDesign::ShapeBinder'):
-        if len(documentObject.Support) == 1 and documentObject.Support[0][1] == ('',):
+    #    if len(documentObject.Support) == 1 and documentObject.Support[0][1] == ('',):
-            ret = isObjectLattice(documentObject.Support[0][0])
+    #        ret = isObjectLattice(documentObject.Support[0][0])
-    if hasattr(documentObject, 'IAm') and documentObject.IAm == 'PartOMagic.Ghost':
+    #if hasattr(documentObject, 'IAm') and documentObject.IAm == 'PartOMagic.Ghost':
-        ret = isObjectLattice(documentObject.Base)
+    #    ret = isObjectLattice(documentObject.Base)
     return ret
     
 def getMarkerSizeEstimate(ListOfPlacements):
@@ -103,13 +104,15 @@ def getMarkerSizeEstimate(ListOfPlacements):
 class LatticeFeature(object):
     "Base object for lattice objects (arrays of placements)"
     
+    attachable = False
+    
     def __init__(self,obj):
         # please, don't override. Override derivedInit instead.
         obj.addProperty('App::PropertyString', 'Type', "Lattice", "module_name.class_name of this object, for proxy recovery", 0, True, True)
         obj.Type = self.__module__ + '.' + type(self).__name__
 
         prop = "NumElements"
-        obj.addProperty("App::PropertyInteger",prop,"Lattice","Info: number of placements in the array")
+        obj.addProperty("App::PropertyInteger",prop,"Lattice","Info: number of placements in the array", 0, True)
         obj.setEditorMode(prop, 1) # set read-only
         
         obj.addProperty("App::PropertyLength","MarkerSize","Lattice","Size of placement markers (set to zero for automatic).")
@@ -123,25 +126,115 @@ class LatticeFeature(object):
         # Auto-On an Auto-Off can be modified when recomputing. Force values are going to stay.
         
         prop = "ExposePlacement"
-        obj.addProperty("App::PropertyBool",prop,"Lattice","Makes the placement syncronized to Placement property. This will oftem make this object unmoveable. Not applicable to arrays.")
+        obj.addProperty("App::PropertyBool",prop,"Lattice","Makes the placement syncronized to Placement property. This will often make this object unmoveable. Not applicable to arrays.")
-
+        
         self.derivedInit(obj)
+        self.assureProperties(obj, creating_new= True)
         
+        self.updateReadonlyness(obj)
+        if not self.attachable:
+            self.disableAttacher(obj)
+
         obj.Proxy = self
+    
+    def assureProperties(self, selfobj, creating_new = False):
+        """#overrideme Method to reconstruct missing properties, that appeared as new functionality was introduced. 
+        Auto called from __init__ (and before derivedInit), and from execute (before derivedExecute)."""
+        self.assureProperty(selfobj, 'App::PropertyLink', 'ReferencePlacementLink', None, "Lattice", "Link to placement to use as reference placement")
+        self.assureProperty(selfobj, 'App::PropertyString', 'ReferencePlacementLinkIndex', None, "Lattice", "Index of placement to take from the link. Can also be 'self.0' for own placements.")
+        self.assureProperty(selfobj, 'App::PropertyBool', 'ReferencePlacementInGlobal', True, "Lattice", "True if reference placement property is in global cs. ", readonly= True)
+        self.assureProperty(
+            selfobj, 
+            'App::PropertyPlacement', 
+            'ReferencePlacement', 
+            None, 
+            "Lattice", 
+            "Reference placement, used by 'Populate: build array'. For it, all placements in this array are reinterpreted as relative to this one.", 
+            readonly= True
+        )
+
+    def updateReadonlyness(self, selfobj, bypass_set = set()):
+        is_lattice = isObjectLattice(selfobj)
+        extref = 0
+        if hasattr(selfobj, 'ReferencePlacementOption'):
+            extref = 0 if selfobj.ReferencePlacementOption == 'external' else 1
+        rodict = {
+            'NumElements': 1, 
+            'MarkerSize': 0,
+            'MarkerShape': 0,
+            'ReferencePlacement': 1,
+            'ReferencePlacementLink': extref, 
+            'ReferencePlacementLinkIndex': extref,
+            'ReferencePlacementInGlobal': 1,
+        }
+        for prop in rodict:
+            if prop in bypass_set: continue
+            if hasattr(selfobj, prop):
+                selfobj.setEditorMode(prop, rodict[prop] if is_lattice else 2)
         
-    def assureProperty(self, selfobj, proptype, propname, defvalue, group, tooltip):
+    def assureProperty(self, selfobj, proptype, propname, defvalue, group, tooltip, readonly = False, hidden = False):
         """assureProperty(selfobj, proptype, propname, defvalue, group, tooltip): adds
         a property if one is missing, and sets its value to default. Does nothing if property 
         already exists. Returns True if property was created, or False if not."""
         
-        return assureProperty(selfobj, proptype, propname, defvalue, group, tooltip)
+        return assureProperty(selfobj, proptype, propname, defvalue, group, tooltip, readonly, hidden)
+    
+    def setReferencePlm(self, selfobj, refplm, in_global = False):
+        """setReferencePlm(selfobj, refplm, in_global = False): sets reference placement, in internal CS."""
+        attr = 'ReferencePlacement'
+        if refplm is None:
+            refplm = App.Placement()
+            in_global = True
+    
+        if selfobj.ExposePlacement:
+            in_global = True
+        selfobj.ReferencePlacementInGlobal = in_global
+        selfobj.ReferencePlacement = refplm
         
+    def getReferencePlm(self, selfobj, in_global = False):
+        """getReferencePlm(self, selfobj): Returns reference placement in internal CS, or in global CS."""
+        if not isObjectLattice(selfobj):
+            return None
+        if not hasattr(selfobj, 'ReferencePlacement'):
+            return App.Placement() if in_global else selfobj.Placement.inverse()
+        if in_global == selfobj.ReferencePlacementInGlobal:
+            return selfobj.ReferencePlacement
+        elif in_global == True and selfobj.ReferencePlacementInGlobal == False:
+            #goal: return == selfobj.Placement * refplm
+            return selfobj.Placement.multiply(selfobj.ReferencePlacement)
+        elif in_global == False and selfobj.ReferencePlacementInGlobal == True:
+            #goal: self.Placement * return == refplm
+            return selfobj.Placement.inverse().multiply(selfobj.ReferencePlacement)
+    
+    def recomputeReferencePlm(self, selfobj, selfplacements):
+        lnk = selfobj.ReferencePlacementLink
+        strindex = selfobj.ReferencePlacementLinkIndex
+        is_selfref = lnk is None and strindex.startswith('self.') 
+        ref = selfobj if is_selfref else lnk
+        if ref is None:
+            self.setReferencePlm(selfobj, None)
+        else:
+            if is_selfref:
+                index = int(strindex[len('self.'):])
+            elif len(strindex)>0:
+                index = int(strindex)
+            else:
+                index = 0
+            if is_selfref:
+                refplm = selfplacements[index]
+                self.setReferencePlm(selfobj, refplm, in_global= False)
+            else:
+                refplm = getPlacementsList(ref)[index]
+                self.setReferencePlm(selfobj, refplm, in_global= True)
+    
     def derivedInit(self, obj):
         '''for overriding by derived classes'''
         pass
         
     def execute(self,obj):
         # please, don't override. Override derivedExecute instead.
+        
+        self.assureProperties(obj)
 
         plms = self.derivedExecute(obj)
 
@@ -154,6 +247,8 @@ class LatticeFeature(object):
             if markerSize < DistConfusion:
                 markerSize = getMarkerSizeEstimate(plms)
             marker = lattice2Markers.getPlacementMarker(scale= markerSize, markerID= obj.MarkerShape)
+            self.assureProperty(obj, 'App::PropertyLength', 'MarkerSizeActual', markerSize, "Lattice", "Size of placement markers of this array", hidden= True)
+            obj.MarkerSizeActual = markerSize
             
             bExposing = False
             if obj.ExposePlacement:
@@ -183,6 +278,7 @@ class LatticeFeature(object):
             if obj.isLattice == 'Auto-Off':
                 obj.isLattice = 'Auto-On'
             
+            self.recomputeReferencePlm(obj, plms)
         else:
             # DerivedExecute didn't return anything. Thus we assume it 
             # has assigned the shape, and thus we don't do anything.
@@ -190,6 +286,7 @@ class LatticeFeature(object):
             if obj.isLattice == 'Auto-On':
                 obj.isLattice = 'Auto-Off'
                 
+            # i don't remember, wtf is going on here...
             if obj.ExposePlacement:
                 if obj.Shape.ShapeType == "Compound":
                     children = obj.Shape.childShapes()
@@ -201,7 +298,7 @@ class LatticeFeature(object):
                 else:
                     #nothing to do - FreeCAD will take care to make obj.Placement and obj.Shape.Placement synchronized.
                     pass
-        return
+        self.updateReadonlyness(obj)
     
     def derivedExecute(self,obj):
         '''For overriding by derived class. If this returns a list of placements,
@@ -262,13 +359,36 @@ class LatticeFeature(object):
                 selfobj.MapMode = selfobj.MapMode #trigger attachment, to make it update property states
     
     def onDocumentRestored(self, selfobj):
-        #override to have attachment!
+        if not self.attachable:
-        self.disableAttacher(selfobj)
+            self.disableAttacher(selfobj)
+        self.assureProperties(selfobj)
+        self.updateReadonlyness(selfobj)
 
     
 class ViewProviderLatticeFeature(object):
     "A View Provider for base lattice object"
 
+    Object = None # documentobject the vp is attached to 
+    ViewObject = None # viewprovider this proxy is attached to
+    
+    #coin graph:
+    #    transform #in sync with Placement
+    #    coordinate3 #coordinates for main shape rendering
+    #    switch: #main display mode switch, == self.modenode
+    #        ...
+    #    separator: #reference placement related stuff, == self.refplm_node
+    #        transform #reference placement, == self.refplm_tr
+    #        separator: #actual shape of reference placement, == self.refplm_sh
+    #            ...
+    #            switch: #mode switch of reference placement, == self.modenode_refplm
+    #                ...
+    
+    modenode = None # main displaymode switch node
+    refplm_node = None # the node containing everything related to reference placement
+    refplm_tr = None #transform node of reference placement
+    refplm_sh = None #node containing the shape of reference placement
+    modenode_refplm = None # displaymode switch node for reference placement
+
     def __init__(self,vobj):
         '''Don't override. Override derivedInit, please!'''
         vobj.Proxy = self
@@ -291,13 +411,44 @@ class ViewProviderLatticeFeature(object):
                 FreeCAD.Console.PrintError("__init__() of lattice object view provider is overridden. Please don't! Fix it!\n")
         except AttributeError as err:
             pass # quick-n-dirty fix for Py3. TODO: restore the functionality in Py3, or remove this routine altogether.
-
+    
+    def fixProxy(self, vobj):
+        if vobj is not self.ViewObject:
+            vobj.Proxy = vobj.ProxyBackup
+            raise RuntimeError('fixing broken proxy...')
+    
     def getIcon(self):
         return getIconPath("Lattice.svg")
 
     def attach(self, vobj):
         self.ViewObject = vobj
         self.Object = vobj.Object
+        try:
+            vobj.ProxyBackup = self
+        except Exception:
+            vobj.addProperty('App::PropertyPythonObject', 'ProxyBackup', 'Base', "helper property for workaround FC bug #3564", 0, False, True)
+            vobj.ProxyBackup = self
+        self.makeRefplmVisual(vobj)
+        from pivy import coin
+        self.modenode = next((node for node in vobj.RootNode.getChildren() if node.isOfType(coin.SoSwitch.getClassTypeId())))
+        
+        
+    def makeRefplmVisual(self, vobj):
+        import pivy
+        from pivy import coin
+        refplm = self.Object.Proxy.getReferencePlm(self.Object)
+        if refplm is not None:
+            if not hasattr(self.Object, 'MarkerSizeActual'): return
+            if self.refplm_node is None:
+                self.refplm_node, self.refplm_tr, self.refplm_sh = lattice2Markers.getRefPlmMarker(self.Object.MarkerShape)
+                vobj.RootNode.addChild(self.refplm_node)
+                self.modenode_refplm = next((node for node in self.refplm_sh.getChildren() if node.isOfType(coin.SoSwitch.getClassTypeId())))
+            CoinGlue.cointransform(refplm, float(self.Object.MarkerSizeActual) * 1.1, self.refplm_tr)
+        else:
+            if hasattr(self, 'refplm_node') and self.refplm_node is not None:
+                vobj.RootNode.removeChild(self.refplm_node)
+                self.refplm_node, self.refplm_tr, self.refplm_sh = None, None, None
+                self.modenode_refplm = None
 
     def __getstate__(self):
         return None
@@ -324,10 +475,21 @@ class ViewProviderLatticeFeature(object):
             # catch all exceptions, because we don't want to prevent deletion if something goes wrong
             FreeCAD.Console.PrintError("Error in onDelete: " + str(err))
         return True
+    
+    def updateData(self, obj, prop):
+        if prop in ['ReferencePlacement', 'MarkerSizeActual', 'Placement', 'ReferencePlacementInGlobal', 'isLattice']:
+            self.fixProxy(obj.ViewObject)
+            self.makeRefplmVisual(obj.ViewObject)
+        
+    def onChanged(self, vobj, prop):
+        if prop == 'Visibility':
+            if self.modenode_refplm is not None:
+                self.modenode_refplm.whichChild.setValue(0 if vobj.Visibility == True else -1)
+        
 
 
-def assureProperty(docobj, proptype, propname, defvalue, group, tooltip):
+def assureProperty(docobj, proptype, propname, defvalue, group, tooltip, readonly = False, hidden = False):
-    """assureProperty(docobj, proptype, propname, defvalue, group, tooltip): adds
+    """assureProperty(docobj, proptype, propname, defvalue, group, tooltip, readonly = False, hidden = False): adds
     a property if one is missing, and sets its value to default. Does nothing if property 
     already exists. Returns True if property was created, or False if not."""
     
@@ -335,7 +497,7 @@ def assureProperty(docobj, proptype, propname, defvalue, group, tooltip):
         #todo: check type match
         return False
         
-    docobj.addProperty(proptype, propname, group, tooltip)
+    docobj.addProperty(proptype, propname, group, tooltip, 0, readonly, hidden)
     if defvalue is not None:
         setattr(docobj, propname, defvalue)
     return True
@@ -348,7 +510,7 @@ def makeMoveFromTo(plmFrom, plmTo):
     from one placement to another placement'''
     return plmTo.multiply(plmFrom.inverse())
 
-def getPlacementsList(documentObject, context = None, suppressWarning = False):
+def getPlacementsList(documentObject, context = None, suppressWarning = False, dereferenced = False, torefplm = App.Placement()):
     '''getPlacementsList(documentObject, context = None): extract list of placements 
     from an array object. Context is an object to report as context, when displaying 
     a warning if the documentObject happens to be a non-lattice.'''
@@ -356,7 +518,46 @@ def getPlacementsList(documentObject, context = None, suppressWarning = False):
         if not suppressWarning:
             lattice2Executer.warning(context, documentObject.Name + " is not a placement or an array of placements. Results may be unexpected.")
     leaves = LCE.AllLeaves(documentObject.Shape)
-    return [leaf.Placement for leaf in leaves]
+    if not dereferenced:
+        return [leaf.Placement for leaf in leaves]
+    else:
+        # goal: refplm * derefplm == it
+        #       return = torefplm * derefplm
+        # => return = torefplm * refplm.inverse * it
+        operator = torefplm.multiply(getReferencePlm(documentObject).inverse())
+        return [operator.multiply(leaf.Placement) for leaf in leaves]
+
+def getReferencePlm(feature):
+    """Obtains reference placement, in container's CS (includes feature.Placement)."""
+    transform, src = source(feature)
+    if not isObjectLattice(src):
+        raise TypeError('getReferencePlm: array of placements expected, got something else.')
+    return transform.multiply(src.Proxy.getReferencePlm(src))
+    
+def source(feature):
+    """source(feature): finds the original Lattice array feature from behind shapebinders and such. Returns (transform, lattice_feature).
+    transform: placement that converts feature's local coordinates into global.
+    lattice_feature may not actually be an array of placements."""
+    def _source(feature, visitset):
+        if hasattr(feature,'isLattice'):
+            return (feature.Placement, feature)
+        if feature in visitset:
+            raise RuntimeError("Dependency loop!")
+        visitset.append(feature)
+        if feature.isDerivedFrom('PartDesign::ShapeBinder'):
+            if len(feature.Support) == 1 and feature.Support[0][1] == ('',):
+                base = feature.Support[0][0]
+                transform1, src = _source(base, visitset)
+                transform = feature.Placement.multiply(base.Placement.inverse().multiply(transform1))
+                return (transform, src)
+        if hasattr(feature, 'IAm') and feature.IAm == 'PartOMagic.Ghost':
+            base = feature.Base
+            transform1, src = _source(base, visitset)
+            transform = feature.Placement.multiply(base.Placement.inverse().multiply(transform1))
+            return (transform, src)
+        return (feature.Placement, feature)
+    return _source(feature, list())
+    
 
 def splitSelection(sel):
     '''splitSelection(sel): splits sel (use getSelectionEx()) into lattices and non-lattices.

lattice2CoinGlue.py

@@ -0,0 +1,49 @@
+#***************************************************************************
+#*                                                                         *
+#*   Copyright (c) 2018 - Victor Titov (DeepSOIC)                          *
+#*                                               <vv.titov@gmail.com>      *  
+#*                                                                         *
+#*   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__="CoinGlue module of FreeCAD add-on Lattice2"
+__author__ = "DeepSOIC"
+__url__ = ""
+__doc__ = "Glue and conversion routines between coin and freecad"
+
+def cointransform(placement, scale = 1.0, modifyme = None):
+    """cointransform(placement, scale = 1.0, modifyme = None): creates/updates SoTransform node from FreeCAD.Placement.
+    modifyme: the existing node to be modified.
+    Returns: SoTransform node (new if modifyme is None else modifyme)"""
+
+    from pivy import coin
+    tr = coin.SoTransform() if modifyme is None else modifyme
+    tr.scaleFactor.setValue(scale,scale,scale)
+    tr.translation.setValue(*tuple(placement.Base))
+    tr.rotation.setValue(*placement.Rotation.Q)
+    return tr
+    
+def readNodeFromFile(fullpath):
+    """readNodeFromFile(fullpath): reads a file. Returns SoSeparator node, containing the read out stuff."""
+    from pivy import coin
+    i = coin.SoInput()
+    if not i.openFile(fullpath): raise ValueError("Failed to open file: {fn}".format(fn= fullpath))
+    import pivy
+    sep = pivy.SoDB.readAll(i)
+    i.closeFile()
+    return sep

lattice2Invert.py

@@ -25,16 +25,11 @@ __title__="Lattice Invert object: creates an array of placements from a compound
 __author__ = "DeepSOIC"
 __url__ = ""
 
-import math
-
 import FreeCAD as App
 import Part
 
 from lattice2Common import *
 import lattice2BaseFeature
-import lattice2CompoundExplorer as LCE
-import lattice2GeomUtils as Utils
-import lattice2Executer
 
 # -------------------------- document object --------------------------------------------------
 
@@ -46,8 +41,6 @@ class LatticeInvert(lattice2BaseFeature.LatticeFeature):
     "The Lattice Invert object"
     
     def derivedInit(self,obj):
-        self.Type = "LatticeInvert"
-                
         obj.addProperty("App::PropertyLink","Base","Lattice Invert","Lattice, all the placements of which are to be inverted.")
                 
         obj.addProperty("App::PropertyEnumeration","TranslateMode","Lattice Invert","What to do with translation part of placements")
@@ -57,14 +50,27 @@ class LatticeInvert(lattice2BaseFeature.LatticeFeature):
         obj.addProperty("App::PropertyEnumeration","OrientMode","Lattice Invert","what to do with orientation part of placements")
         obj.OrientMode = ['invert', 'keep', 'reset']
         obj.OrientMode = 'invert'
-
+    
+    def assureProperties(self, selfobj, creating_new = False):
+        super(LatticeInvert, self).assureProperties(selfobj, creating_new)
+        self.assureProperty(selfobj, 'App::PropertyEnumeration', 'Referencing', ['Origin', 'Array\'s reference'], "Lattice Invert", "Sets which placement to use as origin")
+        
     def derivedExecute(self,obj):
         # cache stuff
-        base = screen(obj.Base).Shape
+        placements = lattice2BaseFeature.getPlacementsList(obj.Base)
-        if not lattice2BaseFeature.isObjectLattice(screen(obj.Base)):
+        
-            lattice2Executer.warning(obj, "Base is not a lattice, but lattice is expected. Results may be unexpected.\n")
+        # dereference
-        baseChildren = LCE.AllLeaves(base)
+        refplm = App.Placement()
-                        
+        if obj.Referencing == 'Origin':
+            pass
+        elif obj.Referencing == 'Array\'s reference':
+            refplm = self.getReferencePlm(obj.Base)
+            self.setReferencePlm(obj, refplm)
+        else:
+            raise NotImplementedError(obj.Referencing)
+        inv_refplm = refplm.inverse()
+        locplms = [inv_refplm.multiply(plm) for plm in placements]
+        
         #cache mode comparisons, for speed
         posIsInvert = obj.TranslateMode == 'invert'
         posIsKeep = obj.TranslateMode == 'keep'
@@ -78,26 +84,29 @@ class LatticeInvert(lattice2BaseFeature.LatticeFeature):
         outputPlms = [] #list of placements
         
         # the essence
-        for child in baseChildren:
+        for plm in locplms:
             pos = App.Vector()
             ori = App.Rotation()
-            inverted = child.Placement.inverse()
+            inverted = plm.inverse()
             if posIsInvert:
                 pos = inverted.Base
             elif posIsKeep:
-                pos = child.Placement.Base
+                pos = plm.Base
             elif posIsReset:
                 pass
             
             if oriIsInvert:
                 ori = inverted.Rotation
             elif oriIsKeep:
-                ori = child.Placement.Rotation
+                ori = plm.Rotation
             elif oriIsReset:
                 pass
                 
-            plm = App.Placement(pos, ori)
+            outputPlms.append(App.Placement(pos, ori))
-            outputPlms.append(plm)
+        
+        # re-reference
+        outputPlms = [refplm.multiply(plm) for plm in outputPlms]
+        
         return outputPlms
 
 
@@ -121,6 +130,8 @@ def CreateLatticeInvert(name):
     FreeCADGui.addModule("lattice2Executer")
     FreeCADGui.doCommand("f = lattice2Invert.makeLatticeInvert(name='"+name+"')")
     FreeCADGui.doCommand("f.Base = App.ActiveDocument."+sel[0].ObjectName)
+    hasref = lattice2BaseFeature.getReferencePlm(sel[0].Object) is not None
+    FreeCADGui.doCommand("f.Referencing = {r}".format(r= repr('Array\'s reference' if hasref else 'Origin') ))    
     FreeCADGui.doCommand("for child in f.ViewObject.Proxy.claimChildren():\n"+
                          "    child.ViewObject.hide()")
     FreeCADGui.doCommand("lattice2Executer.executeFeature(f)")

lattice2JoinArrays.py

@@ -49,33 +49,60 @@ class JoinArrays(lattice2BaseFeature.LatticeFeature):
         
         obj.addProperty("App::PropertyBool","Interleave","Lattice JoinArrays","If false, first go all elements of array 1, nect go all elements of array 2, so on. If true, first go all first elements from each array, then all second elements, and so on.")
         
+    def assureProperties(self, selfobj, creating_new = False):
+        super(JoinArrays, self).assureProperties(selfobj, creating_new = False)
+        created = self.assureProperty(selfobj, 
+            'App::PropertyEnumeration', 
+            'ReferencePlacementOption', 
+            ['external', 'origin', 'inherit 1st'],
+            "Lattice JoinArrays", 
+            "Reference placement, corresponds to the original occurrence of the object to be populated."
+        )
+        if created:
+            selfobj.ReferencePlacementOption = 'inherit 1st'
+        self.assureProperty(selfobj,
+            'App::PropertyBool',
+            'AlignReferences',
+            False,
+            "Lattice JoinArrays",
+            "If true, input arrays will be moved to make their reference placements equal, before joining."
+        )
+
+    def recomputeReferencePlm(self, selfobj, selfplacements): #override
+        pass #disables standard recompute-reference call. The recompute is handled by derivedExecute 
 
 
-    def derivedExecute(self,obj):
+    def derivedExecute(self, selfobj):
-        #validity check
+        align = selfobj.AlignReferences
-        nonLattices = []
+        #recompute reference placement
-        for iArr in range(0, len(obj.Links)):
+        ref = selfobj.ReferencePlacementOption
-            link = obj.Links[iArr]
+        if ref == 'external':
-            if not lattice2BaseFeature.isObjectLattice(link):
+            super(JoinArrays, self).recomputeReferencePlm(selfobj, [])
-                nonLattices.append(link.Label)
+        elif ref == 'origin':
-        if len(nonLattices) > 0:
+            self.setReferencePlm(selfobj, None)
-            lattice2Executer.warning(obj, "Only lattice objects are expected to be linked as arrays in JoinArrays. There are "
+        elif ref == 'inherit 1st':
-                                    +len(nonLattices)+" objects which are not lattice objects. Results may me unexpected.")
+            if len(selfobj.Links)>0:
-        
+                self.setReferencePlm(selfobj, lattice2BaseFeature.getReferencePlm(selfobj.Links[0]))
+            else:
+                self.setReferencePlm(selfobj, None)
+        else:
+            raise NotImplementedError("Reference option not implemented: " + ref)
+        refplm = self.getReferencePlm(selfobj)
+
         #extract placements
         listlistPlms = []
         lengths = []
-        for link in obj.Links:
+        for link in selfobj.Links:
-            leaves = LCE.AllLeaves(link.Shape)
+            plms = lattice2BaseFeature.getPlacementsList(link, context= selfobj, dereferenced= align, torefplm = refplm)
-            listlistPlms.append([child.Placement for child in leaves])
+            listlistPlms.append(plms)
-            lengths.append(len(leaves))
+            lengths.append(len(plms))
         
         #processing
         output = [] #list of placements
-        if obj.Interleave:
+        if selfobj.Interleave:
             for l in lengths[1:]:
                 if l != lengths[0]:
-                    lattice2Executer.warning(obj,"Array lengths are unequal: "+repr(lengths)+". Interleaving will be inconsistent.")
+                    lattice2Executer.warning(selfobj,"Array lengths are unequal: "+repr(lengths)+". Interleaving will be inconsistent.")
                     break
             
             for iItem in range(0,max(lengths)):
@@ -85,6 +112,7 @@ class JoinArrays(lattice2BaseFeature.LatticeFeature):
         else:
             for list in listlistPlms:
                 output.extend(list)
+                
         return output
 
 class ViewProviderJoinArrays(lattice2BaseFeature.ViewProviderLatticeFeature):
@@ -125,14 +153,13 @@ class _CommandJoinArrays:
                 'ToolTip': QtCore.QT_TRANSLATE_NOOP("Lattice2_JoinArrays","Lattice JoinArrays: concatenate or interleave two or more arrays.")}
         
     def Activated(self):
-        if len(FreeCADGui.Selection.getSelection()) > 1 :
+        try:
-            CreateJoinArrays(name = "Join")
+            if len(FreeCADGui.Selection.getSelection()) > 1 :
-        else:
+                CreateJoinArrays(name = "Join")
-            mb = QtGui.QMessageBox()
+            else:
-            mb.setIcon(mb.Icon.Warning)
+                infoMessage("Please select at least two lattice objects. Selected lattice objects will be concatenated or interleaved into one array.")
-            mb.setText(translate("Lattice2_JoinArrays", "Please select at least two lattice objects. Selected lattice objects will be concatenated or interleaved into one array.", None))
+        except Exception as err:
-            mb.setWindowTitle(translate("Lattice2_JoinArrays","Bad selection", None))
+            msgError(err)
-            mb.exec_()
             
     def IsActive(self):
         if FreeCAD.ActiveDocument:

lattice2LinearArray.py

@@ -80,16 +80,17 @@ class LinearArray(lattice2BaseFeature.LatticeFeature):
         obj.Step = 3.0
         obj.Count = 5.0
         
-        self.assureProperties(obj)
-
     def updateReadonlyness(self, obj):
+        super(LinearArray,self).updateReadonlyness(obj)
         link = screen(obj.Link)
         obj.setEditorMode("Dir", 1 if (link and obj.DirIsDriven) else 0)
         obj.setEditorMode("Point", 1 if (link and obj.PointIsDriven) else 0)
         obj.setEditorMode("DirIsDriven", 0 if link else 1)
         obj.setEditorMode("PointIsDriven", 0 if link else 1)
         obj.setEditorMode("DrivenProperty", 0 if link else 1)
+        obj.setEditorMode('ReferenceValue', 0 if obj.ReferencePlacementOption == 'at custom value' else 2)
         
+        self.assureGenerator(obj)
         self.generator.updateReadonlyness()
 
     def assureGenerator(self, obj):
@@ -101,15 +102,30 @@ class LinearArray(lattice2BaseFeature.LatticeFeature):
                                      groupname_gen= "Lattice Series Generator", 
                                      valuesdoc= "List of distances. Distance is measured from Point, along Dir, in millimeters.",
                                      valuestype= "App::PropertyDistance")
-        self.updateReadonlyness(obj)
         
-    def assureProperties(self, selfobj):
+    def assureProperties(self, selfobj, creating_new = False):
+        super(LinearArray, self).assureProperties(selfobj, creating_new)
+
         assureProperty(selfobj, "App::PropertyLinkSub", "SubLink", sublinkFromApart(screen(selfobj.Link), selfobj.LinkSubelement), "Lattice Array", "Mirror of Object+SubNames properties")
 
+        created = self.assureProperty(selfobj, 
+            'App::PropertyEnumeration', 
+            'ReferencePlacementOption', 
+            ['external', 'origin', 'SpanStart', 'SpanEnd', 'at custom value', 'first placement', 'last placement'],
+            "Lattice Array", 
+            "Reference placement, corresponds to the original occurrence of the object to be populated."
+        )
+        if created:
+            selfobj.ReferencePlacementOption = 'SpanStart'
+        self.assureProperty(selfobj, 'App::PropertyDistance', 'ReferenceValue', 0.0, "Lattice Array", "Sets the value to use for generating ReferencePlacement. This value sets, what coordinate the object to be populated corresponds to.")
+
+    def recomputeReferencePlm(self, selfobj, selfplacements): #override
+        if selfobj.ReferencePlacementOption == 'external':
+            super(LinearArray, self).recomputeReferencePlm(selfobj, selfplacements)
+        #the remaining options are handled in derivedExecute
+        
     def derivedExecute(self,obj):
         self.assureGenerator(obj)
-        self.assureProperties(obj)
-        self.updateReadonlyness(obj)
 
         # Apply links
         if screen(obj.Link):
@@ -170,9 +186,30 @@ class LinearArray(lattice2BaseFeature.LatticeFeature):
         dir.normalize()
         
         # Make the array
+        def plmByVal(val):
+            return App.Placement(obj.Point + obj.Dir*val, ori)
         output = [] # list of placements
         for v in values:
-            output.append( App.Placement(obj.Point + obj.Dir*v, ori) )
+            output.append( plmByVal(v) )
+
+        # update reference placement
+        ref = obj.ReferencePlacementOption
+        if ref == 'external':
+            pass
+        elif ref == 'origin':
+            self.setReferencePlm(obj, None)
+        elif ref == 'SpanStart':
+            self.setReferencePlm(obj, plmByVal(float(obj.SpanStart)))
+        elif ref == 'SpanEnd':
+            self.setReferencePlm(obj, plmByVal(float(obj.SpanEnd)))
+        elif ref == 'at custom value':
+            self.setReferencePlm(obj, plmByVal(float(obj.ReferenceValue)))
+        elif ref == 'first placement':
+            self.setReferencePlm(obj, output[0])
+        elif ref == 'last placement':
+            self.setReferencePlm(obj, output[-1])
+        else:
+            raise NotImplementedError("Reference option not implemented: " + ref)
             
         return output
         

lattice2Markers.py

@@ -21,15 +21,19 @@
 #*                                                                         *
 #***************************************************************************
 
-import Part, os
+import Part
+import os
+
+import lattice2CoinGlue as CoinGlue
 
 __title__="latticeMarkers module for FreeCAD"
 __author__ = "DeepSOIC"
 __url__ = ""
 __doc__ = "Module for loading marker shapes for Lattice workbench"
 
-_nullShapeShape = 0
+_nullShapeShape = None
 _ShapeDict = {}
+_NodeDict = {}
 
 def getShapePath(shapeName):
     """
@@ -44,7 +48,7 @@ def getNullShapeShape(scale = 1.0):
     
     #read shape from file, if not done this before
     global _nullShapeShape
-    if not _nullShapeShape:
+    if _nullShapeShape is None:
         _nullShapeShape = Part.Shape()
         f = open(getShapePath("empty-shape.brep"))
         _nullShapeShape.importBrep(f)
@@ -73,8 +77,7 @@ def loadShape(shapeID):
             FreeCAD.Console.PrintError('Failed to load standard shape "'+shapeID+'". \n' + str(err) + '\n')
             sh = Part.Point() #Create at least something!
         _ShapeDict[shapeID] = sh
-    return sh
+    return sh        
-        
 
 def getPlacementMarker(scale = 1.0, markerID = None):
     '''getPlacementMarker(scale = 1.0, markerID = None): returns a placement marker shape. 
@@ -87,3 +90,27 @@ def getPlacementMarker(scale = 1.0, markerID = None):
         sh = sh.copy()
         sh.scale(scale)
     return sh
+    
+def loadNode(shapeID):
+    global _NodeDict
+    nd = _NodeDict.get(shapeID)
+    if nd is None:
+        nd = CoinGlue.readNodeFromFile(getShapePath(shapeID + '.iv'))
+        _NodeDict[shapeID] = nd
+        nd.ref() # not sure if needed, but won't hurt.
+    return nd.copy()
+
+def getRefPlmMarker(markerID, placement = None, scale = 1.0):
+    '''getRefPlmMarker(markerID, placement = None, scale = 1.0): returns a coin placement marker shape, as SoSeparator (+ transform node + shape node). 
+    The shape is scaled according to "scale" argument. 
+    markerID sets the marker file name.'''
+    sh = loadNode(markerID + '-refplm')
+    from pivy import coin
+    sep = coin.SoSeparator()
+    tr = coin.SoTransform()
+    if placement is not None:
+        CoinGlue.cointransform(placement, scale, tr)
+    sep.addChild(tr)
+    sep.addChild(sh)
+    return (sep, tr, sh)
+

lattice2PDPattern.py

@@ -33,7 +33,7 @@ import lattice2BaseFeature
 import lattice2Executer
 from lattice2ShapeCopy import shallowCopy, transformCopy_Smart
 
-from lattice2PopulateCopies import DereferenceArray
+from lattice2PopulateCopies import DereferenceArray, REF_MODES
 
 
 class FeatureUnsupportedError(RuntimeError):
@@ -182,7 +182,7 @@ class LatticePDPattern(object):
         obj.addProperty('App::PropertyLink','PlacementsTo',"Lattice Pattern","Target placements")
         
         obj.addProperty('App::PropertyEnumeration','Referencing',"Lattice Pattern","Reference placement mode (sets what to grab the feature by).")
-        obj.Referencing = ['Origin','First item', 'Last item', 'Use PlacementsFrom']
+        obj.Referencing = REF_MODES
         
         obj.addProperty('App::PropertyBool', 'IgnoreUnsupported', "Lattice Pattern", "Skip unsupported features such as fillets, instead of throwing errors")
         obj.addProperty('App::PropertyBool', 'SkipFirstInBody', "Lattice Pattern", "Skip first body feature (which may be used as support for the important features).")
@@ -250,8 +250,7 @@ class LatticePDPattern(object):
                     raise ScopeError('Reference placement and the feature are not in the same body (use Shapebinder or Ghost to bring the placement in).')
         
         
-        placements = lattice2BaseFeature.getPlacementsList(selfobj.PlacementsTo, selfobj)
+        placements = DereferenceArray(selfobj, selfobj.PlacementsTo, selfobj.PlacementsFrom, selfobj.Referencing)
-        placements = DereferenceArray(selfobj, placements, selfobj.PlacementsFrom, selfobj.Referencing)
         if selfobj.Referencing == 'First item' and transforms is None:
             placements.pop(0) #to not repeat the feature where it was applied already 
         elif selfobj.Referencing == 'Last item' and transforms is None:

lattice2ParaSeries.py

@@ -123,12 +123,16 @@ class LatticeParaSeries(lattice2BaseFeature.LatticeFeature):
         self.generator.addProperties(groupname= "Lattice ParaSeries", 
                                      groupname_gen= "Lattice ParaSeries Generator", 
                                      valuesdoc= "List of parameter values to compute object for.")
+        
+    def updateReadonlyness(self, selfobj):
+        super(LatticeParaSeries, self).updateReadonlyness(selfobj)
+        self.assureGenerator(selfobj)
         self.generator.updateReadonlyness()
 
+
     def derivedExecute(self,selfobj):
         # values generator should be functional even if recomputing is disabled, so do it first
         self.assureGenerator(selfobj)
-        self.generator.updateReadonlyness()
         self.generator.execute()
         
         if selfobj.Recomputing == "Disabled":

lattice2PolarArray.py

@@ -75,8 +75,6 @@ class PolarArray(lattice2BaseFeature.LatticeFeature):
         obj.EndInclusive = False
         obj.Count = 5
         
-        self.assureProperties(obj)
-
     def assureGenerator(self, obj):
         '''Adds an instance of value series generator, if one doesn't exist yet.'''
         if hasattr(self,"generator"):
@@ -89,21 +87,24 @@ class PolarArray(lattice2BaseFeature.LatticeFeature):
         self.updateReadonlyness(obj)
         
     def updateReadonlyness(self, obj):
+        super(PolarArray, self).updateReadonlyness(obj)
         axislink = screen(obj.AxisLink)
         obj.setEditorMode("AxisDir", 1 if (axislink and obj.AxisDirIsDriven) else 0)
         obj.setEditorMode("AxisPoint", 1 if (axislink and obj.AxisPointIsDriven) else 0)
         obj.setEditorMode("AxisDirIsDriven", 0 if axislink else 1)
         obj.setEditorMode("AxisPointIsDriven", 0 if axislink else 1)
+        
+        self.assureGenerator(obj)
         self.generator.updateReadonlyness()
     
-    def assureProperties(self, selfobj):
+    def assureProperties(self, selfobj, creating_new = False):
+        super(PolarArray, self).assureProperties(selfobj, creating_new)
+
         assureProperty(selfobj, "App::PropertyLinkSub", "AxisSubLink", sublinkFromApart(screen(selfobj.AxisLink), selfobj.AxisLinkSubelement), "Lattice Array", "Mirror of Object+SubNames properties")
 
 
     def derivedExecute(self,obj):
         self.assureGenerator(obj)
-        self.assureProperties(obj)
-        self.updateReadonlyness(obj)
         
         # Apply links
         if screen(obj.AxisLink):

lattice2PolarArray2.py

@@ -45,7 +45,7 @@ V = App.Vector
 
 def make():
     '''make(): makes a PolarArray object.'''
-    obj = lattice2BaseFeature.makeLatticeFeature('PolarArray', PolarArray, ViewProviderPolarArray, no_disable_attacher= True)
+    obj = lattice2BaseFeature.makeLatticeFeature('PolarArray', PolarArray, ViewProviderPolarArray)
     return obj
     
 def fetchArc(obj, sub):
@@ -85,7 +85,22 @@ class PolarArray(APlm.AttachableFeature):
         selfobj.EndInclusive = False
         selfobj.Step = 55
         selfobj.Count = 7
-        
+    
+    def assureProperties(self, selfobj, creating_new = False):
+        super(PolarArray, self).assureProperties(selfobj, creating_new)
+
+        # upgrades older versions of the feature
+        created = self.assureProperty(selfobj, 
+            'App::PropertyEnumeration', 
+            'ReferencePlacementOption', 
+            ['external', 'origin', 'center', 'SpanStart', 'SpanEnd', 'at custom value', 'first placement', 'last placement'],
+            "Polar Array", 
+            "Reference placement, corresponds to the original occurrence of the object to be populated."
+        )
+        if created:
+            selfobj.ReferencePlacementOption = 'SpanStart'
+        self.assureProperty(selfobj, 'App::PropertyFloat', 'ReferenceValue', 0.0, "Polar Array", "Sets the value to use for generating ReferencePlacement. This value sets, what angle the object to be populated corresponds to.")
+    
     def assureGenerator(self, selfobj):
         '''Adds an instance of value series generator, if one doesn't exist yet.'''
         if hasattr(self,'generator'):
@@ -95,13 +110,16 @@ class PolarArray(APlm.AttachableFeature):
                                      groupname_gen= "Lattice Series Generator", 
                                      valuesdoc= "List of angles, in degrees.",
                                      valuestype= 'App::PropertyFloat')
-        self.updateReadonlyness(selfobj)
         
     def updateReadonlyness(self, selfobj):
+        super(PolarArray, self).updateReadonlyness(selfobj)
+        
+        self.assureGenerator(selfobj)
         self.generator.updateReadonlyness()
         
         arc = self.fetchArc(selfobj) 
         selfobj.setEditorMode('Radius', 1 if arc and selfobj.UseArcRadius else 0)
+        selfobj.setEditorMode('ReferenceValue', 0 if selfobj.ReferencePlacementOption == 'at custom value' else 2)
         self.generator.setPropertyWritable('SpanEnd', False if arc and selfobj.UseArcRange == 'as Span' else True)
         self.generator.setPropertyWritable('SpanStart', False if arc and selfobj.UseArcRange == 'as Span' else True)
         self.generator.setPropertyWritable('Step', False if arc and selfobj.UseArcRange == 'as Step' else True)
@@ -113,6 +131,11 @@ class PolarArray(APlm.AttachableFeature):
             sub = sub[0]
             #resolve the link        
             return fetchArc(lnkobj, sub)
+            
+    def recomputeReferencePlm(self, selfobj, selfplacements): #override
+        if selfobj.ReferencePlacementOption == 'external':
+            super(PolarArray, self).recomputeReferencePlm(selfobj, selfplacements)
+        #the remaining options are handled in derivedExecute
         
     def derivedExecute(self,selfobj):
         self.assureGenerator(selfobj)
@@ -189,7 +212,7 @@ class PolarArray(APlm.AttachableFeature):
         angleplus = -90.0 if on_arc else 0.0
         mm = -1.0 if selfobj.Reverse else +1.0
         output = [] # list of placements
-        for ang in values:
+        def plmByVal(ang):
             localrot = App.Rotation(App.Vector(0,0,1), ang * mm + angleplus)
             localtransl = localrot.multVec(App.Vector(radius,0,0))
             localplm = App.Placement(localtransl, localrot)
@@ -200,7 +223,29 @@ class PolarArray(APlm.AttachableFeature):
             elif is_static:
                 resultplm.Rotation = App.Rotation()
                 resultplm = resultplm.multiply(flipplm)
-            output.append(resultplm)
+            return resultplm
+        output = [plmByVal(ang) for ang in values]
+            
+        # update reference placement
+        ref = selfobj.ReferencePlacementOption
+        if ref == 'external':
+            pass #gets done in recomputeReferencePlm
+        elif ref == 'origin':
+            self.setReferencePlm(selfobj, None)
+        elif ref == 'center':
+            self.setReferencePlm(selfobj, App.Placement())
+        elif ref == 'SpanStart':
+            self.setReferencePlm(selfobj, plmByVal(selfobj.SpanStart))
+        elif ref == 'SpanEnd':
+            self.setReferencePlm(selfobj, plmByVal(selfobj.SpanEnd))
+        elif ref == 'at custom value':
+            self.setReferencePlm(selfobj, plmByVal(selfobj.ReferenceValue))
+        elif ref == 'first placement':
+            self.setReferencePlm(selfobj, output[0])
+        elif ref == 'last placement':
+            self.setReferencePlm(selfobj, output[-1])
+        else:
+            raise NotImplementedError("Reference option not implemented: " + ref)
 
         return output
     

lattice2PopulateChildren.py

@@ -34,7 +34,7 @@ from lattice2Common import *
 import lattice2BaseFeature
 import lattice2CompoundExplorer as LCE
 import lattice2Executer
-from lattice2PopulateCopies import DereferenceArray, throwBody
+from lattice2PopulateCopies import DereferenceArray, throwBody, REF_MODES
 import lattice2ShapeCopy as ShapeCopy
 
 # -------------------------- document object --------------------------------------------------
@@ -58,7 +58,7 @@ class LatticePopulateChildren(lattice2BaseFeature.LatticeFeature):
         obj.addProperty("App::PropertyBool","LoopObjectSequence","Lattice PopulateChildren","If true, children of Object will be traversed in a loop if there are more placements than children. Otherwise, extra placements will be dropped.")
                 
         obj.addProperty("App::PropertyEnumeration","Referencing","Lattice PopulateChildren","Reference for array of placements.")
-        obj.Referencing = ["Origin","First item", "Last item", "Use PlacementsFrom"]
+        obj.Referencing = REF_MODES
         
         
         obj.addProperty("App::PropertyLink","PlacementsTo","Lattice PopulateChildren", "Placement or array of placements, containing target locations.")
@@ -88,11 +88,10 @@ class LatticePopulateChildren(lattice2BaseFeature.LatticeFeature):
                 raise ValueError("Traversal mode not implemented: "+obj.ObjectTraversal)
         else:
             objectPlms = lattice2BaseFeature.getPlacementsList(screen(obj.Object), obj)
-        placements = lattice2BaseFeature.getPlacementsList(screen(obj.PlacementsTo), obj)
 
         
         # Precompute referencing
-        placements = DereferenceArray(obj, placements, screen(obj.PlacementsFrom), obj.Referencing)
+        placements = DereferenceArray(obj, obj.PlacementsTo, screen(obj.PlacementsFrom), obj.Referencing)
                 
         # initialize output containers and loop variables
         outputShapes = [] #output list of shapes
@@ -101,6 +100,20 @@ class LatticePopulateChildren(lattice2BaseFeature.LatticeFeature):
         numChildren = len(objectPlms) if outputIsLattice else len(objectShapes) 
         copy_method_index = ShapeCopy.getCopyTypeIndex(obj.Copying)
         
+        #inherit reference placement from the array being copied
+        if outputIsLattice:
+            refplm = None
+            if obj.Referencing == 'Array\'s reference' or obj.Referencing == 'First item' or obj.Referencing == 'Last item':
+                #simple cases - we just copy the reference plm from the object
+                refplm = lattice2BaseFeature.getReferencePlm(obj.Object)
+            else:
+                #other cases - apply first transform to reference placement
+                refplm = lattice2BaseFeature.getReferencePlm(obj.Object)
+                if refplm is not None and len(placements) > 0:
+                    refplm = placements[0].multiply(refplm)
+            self.setReferencePlm(obj, refplm)
+
+        
         # the essence
         for iPlm in range(len(placements)):
             if iChild == numChildren:
@@ -176,6 +189,11 @@ def CreateLatticePopulateChildren(name, label, shapeObj, latticeObjFrom, lattice
     FreeCADGui.doCommand("f.PlacementsTo = App.ActiveDocument."+latticeObjTo.Name)
     if latticeObjFrom is not None:
         FreeCADGui.doCommand("f.PlacementsFrom = App.ActiveDocument."+latticeObjFrom.Name)        
+    if refmode == 'Auto':
+        if lattice2BaseFeature.getReferencePlm(latticeObjTo) is not None:
+            refmode = 'Array\'s reference'
+        else:
+            refmode = 'First item'
     FreeCADGui.doCommand("f.Referencing = "+repr(refmode))
     FreeCADGui.doCommand("f.Label = " + repr(label))                         
     

lattice2PopulateCopies.py

@@ -37,13 +37,16 @@ import lattice2Executer
 import lattice2ShapeCopy as ShapeCopy
 
 # ---------------------------shared code--------------------------------------
-def DereferenceArray(obj,placements, lnkFrom, refmode):
+
+REF_MODES = ['Origin', 'First item', 'Last item', 'Use PlacementsFrom', 'Array\'s reference']
+
+def DereferenceArray(obj, lnkTo, lnkFrom, refmode):
     '''common implementation of treatment Referencing property. Returns a list of placements to use directly.
-    obj - feature being executed (used for error reporting; can be None)
+    obj - feature being executed
-    placements - the array, converted into a list of placements.
+    lnkTo - the array of target placements (documentobject).
     lnkFrom - object linked as a lattice of 'from' placements. Can be None, if mode is not 'Use PlacemenetsFrom'
     refmode - a string - enum property item'''
-        
+    placements = lattice2BaseFeature.getPlacementsList(lnkTo, obj)    
     plmDeref = App.Placement() #inverse placement of reference (reference is a substitute of origin)
     if lnkFrom is not None  and  refmode != "Use PlacementsFrom":
         lattice2Executer.warning(obj,"Referencing mode is '"+refmode+"', doesn't need PlacementsFrom link to be set. The link is set, but it will be ignored.")
@@ -52,7 +55,7 @@ def DereferenceArray(obj,placements, lnkFrom, refmode):
     elif refmode == "First item":
         plmDeref = placements[0].inverse()
     elif refmode == "Last item":
-        plmDeref = placements[0].inverse()
+        plmDeref = placements[-1].inverse()
     elif refmode == "Use PlacementsFrom":
         if lnkFrom is None:
             raise ValueError("Referencing mode is 'Move from to', but PlacementsFrom link is not set.")
@@ -63,8 +66,13 @@ def DereferenceArray(obj,placements, lnkFrom, refmode):
             return [lattice2BaseFeature.makeMoveFromTo(placementsFrom[i], placements[i]) for i in range(0, len(placements))]
         else:
             lattice2Executer.warning(obj,"Lengths of arrays linked as PlacementsTo and PlacementsFrom must equal, or PlacementsFrom can be one placement. Violation: lengths are "+str(len(placements))+ " and "+str(len(placementsFrom)))
+    elif refmode == 'Array\'s reference':
+        plmRef = lattice2BaseFeature.getReferencePlm(lnkTo)
+        if plmRef is None:
+            raise AttributeError('Object {obj} does not expose a reference placement.')
+        plmDeref = plmRef.inverse()
     else:
-        raise ValueError("Referencing mode not implemented: "+refmode)
+        raise ValueError("Referencing mode not implemented: " + refmode)
     
     return [plm.multiply(plmDeref) for plm in placements]
 
@@ -85,40 +93,54 @@ class LatticePopulateCopies(lattice2BaseFeature.LatticeFeature):
         obj.addProperty("App::PropertyLink","Object","Lattice PopulateCopies","Base object. Can be any generic shape, as well as another lattice object.")
                 
         obj.addProperty("App::PropertyEnumeration","Referencing","Lattice PopulateCopies","Reference for array of placements.")
-        obj.Referencing = ["Origin","First item", "Last item", "Use PlacementsFrom"]
+        obj.Referencing = REF_MODES
         
         
         obj.addProperty("App::PropertyLink","PlacementsTo","Lattice PopulateCopies", "Placement or array of placements, containing target locations.")
         obj.addProperty("App::PropertyLink","PlacementsFrom", "Lattice PopulateCopies","Placement or array of placements to be treated as origins for PlacementsTo.")
-        
-        self.assureProperties(obj)
-        obj.OutputCompounding = "(autosettle)" # this is default value for new features.
 
-    def assureProperties(self, obj):
+    def assureProperties(self, obj, creating_new = False):
         '''Adds properties that might be missing, because of loaded project made with older version. Handles version compatibility.'''
+        super(LatticePopulateCopies, self).assureProperties(obj, creating_new)
+
         propname = 'OutputCompounding'
         if not hasattr(obj,propname):
             obj.addProperty("App::PropertyEnumeration", propname, "Lattice PopulateCopies","In case single object copy is made, this property controls, if it's packed into compoud or not.")
             setattr(obj,propname,["(autosettle)","always", "only if many"])
-            setattr(obj,propname,"always") # this is to match the old behavior. This is not the default setting for new features.
+            if creating_new:
+                obj.OutputCompounding = "(autosettle)" # this is default value for new features.
+            else:
+                setattr(obj,propname,"always") # this is to match the old behavior. This is not the default setting for new features.
+            
         if self.assureProperty(obj, "App::PropertyEnumeration","Copying", ShapeCopy.copy_types, "Lattice PopulateChildren", "Sets, what method to use for copying shapes."):
             self.Copying = ShapeCopy.copy_types[0]
 
 
     def derivedExecute(self,obj):
-        self.assureProperties(obj)
-        
         # cache stuff
         objectShape = screen(obj.Object).Shape
-        placements = lattice2BaseFeature.getPlacementsList(screen(obj.PlacementsTo), obj)
 
         outputIsLattice = lattice2BaseFeature.isObjectLattice(screen(obj.Object))
+        
 
         # Pre-collect base placement list, if base is a lattice. For speed.
         if outputIsLattice:
             objectPlms = lattice2BaseFeature.getPlacementsList(screen(obj.Object),obj)
         
-        placements = DereferenceArray(obj, placements, screen(obj.PlacementsFrom), obj.Referencing)
+        placements = DereferenceArray(obj, obj.PlacementsTo, screen(obj.PlacementsFrom), obj.Referencing)
+
+        #inherit reference placement from the array being copied
+        if outputIsLattice:
+            refplm = None
+            if obj.Referencing == 'Array\'s reference' or obj.Referencing == 'First item' or obj.Referencing == 'Last item':
+                #simple cases - we just copy the reference plm from the object
+                refplm = lattice2BaseFeature.getReferencePlm(obj.Object)
+            else:
+                #other cases - apply first transform to reference placement
+                refplm = lattice2BaseFeature.getReferencePlm(obj.Object)
+                if refplm is not None and len(placements) > 0:
+                    refplm = placements[0].multiply(refplm)
+            self.setReferencePlm(obj, refplm)
         
         # initialize output containers and loop variables
         outputShapes = [] #output list of shapes
@@ -161,18 +183,20 @@ class ViewProviderLatticePopulateCopies(lattice2BaseFeature.ViewProviderLatticeF
     def getIcon(self):
         if lattice2BaseFeature.isObjectLattice(self.Object):
             return getIconPath(
-                {"Origin":"Lattice2_PopulateCopies_Plms_Normal.svg",
+                {'Origin':'Lattice2_PopulateCopies_Plms_Normal.svg',
-                 "First item":"Lattice2_PopulateCopies_Plms_Array.svg",
+                 'First item':'Lattice2_PopulateCopies_Plms_Array.svg',
-                 "Last item":"Lattice2_PopulateCopies_Plms_Array.svg",
+                 'Last item':'Lattice2_PopulateCopies_Plms_Array.svg',
-                 "Use PlacementsFrom":"Lattice2_PopulateCopies_Plms_Move.svg",
+                 'Use PlacementsFrom':'Lattice2_PopulateCopies_Plms_Move.svg',
+                 'Array\'s reference':'Lattice2_PopulateCopies_Plms_Ref.svg',
                 }[self.Object.Referencing]
                 )  
         else:
             return getIconPath(
-                {"Origin":"Lattice2_PopulateCopies_Normal.svg",
+                {'Origin':'Lattice2_PopulateCopies_Normal.svg',
-                 "First item":"Lattice2_PopulateCopies_Array.svg",
+                 'First item':'Lattice2_PopulateCopies_Array.svg',
-                 "Last item":"Lattice2_PopulateCopies_Array.svg",
+                 'Last item':'Lattice2_PopulateCopies_Array.svg',
-                 "Use PlacementsFrom":"Lattice2_PopulateCopies_Move.svg",
+                 'Use PlacementsFrom':'Lattice2_PopulateCopies_Move.svg',
+                 'Array\'s reference':'Lattice2_PopulateCopies_Ref.svg',
                 }[self.Object.Referencing]
                 )  
         
@@ -199,6 +223,11 @@ def CreateLatticePopulateCopies(name, label, shapeObj, latticeObjFrom, latticeOb
     FreeCADGui.doCommand("f.PlacementsTo = App.ActiveDocument."+latticeObjTo.Name)
     if latticeObjFrom is not None:
         FreeCADGui.doCommand("f.PlacementsFrom = App.ActiveDocument."+latticeObjFrom.Name)        
+    if refmode == 'Auto':
+        if lattice2BaseFeature.getReferencePlm(latticeObjTo) is not None:
+            refmode = 'Array\'s reference'
+        else:
+            refmode = 'First item'
     FreeCADGui.doCommand("f.Referencing = "+repr(refmode))
     FreeCADGui.doCommand("f.Label = " + repr(label))                         
     
@@ -220,72 +249,83 @@ def CreateLatticePopulateCopies(name, label, shapeObj, latticeObjFrom, latticeOb
 def throwBody():
     raise SelectionError("PartDesign mode", "You can't use population tools on shapes in partdesign body. Use Lattice PartDesign Pattern instead. Or deactivate active body to use populate tools on shapes.")
 
-def cmdPopulate_shapes_nonFromTo(refmode):
+def cmdPopulateCopies():
     sel = FreeCADGui.Selection.getSelectionEx()
     (lattices, shapes) = lattice2BaseFeature.splitSelection(sel)
     if activeBody() and len(shapes)>0:
         throwBody()
-    if len(shapes) > 0 and len(lattices) == 1:
-        FreeCAD.ActiveDocument.openTransaction("Populate with copies")
-        lattice = lattices[0]
-        for shape in shapes:
-            CreateLatticePopulateCopies("Populate",u"Populate "+lattice.Object.Label+u" with "+shape.Object.Label,shape.Object,None,lattice.Object,refmode)
-        deselect(sel)
-        FreeCAD.ActiveDocument.commitTransaction()
-    elif len(shapes) == 1 and len(lattices) > 1:
-        shape = shapes[0]
-        FreeCAD.ActiveDocument.openTransaction("Populate with copies")
-        for lattice in lattices:
-            CreateLatticePopulateCopies("Populate",u"Populate "+lattice.Object.Label+u" with "+shape.Object.Label,shape.Object,None,lattice.Object,refmode)
-        deselect(sel)
-        FreeCAD.ActiveDocument.commitTransaction()
-    elif len(shapes) == 0 and len(lattices) == 2:
-        shape = lattices[0]
-        lattice = lattices[1]
-        FreeCAD.ActiveDocument.openTransaction("Populate with copies")
-        CreateLatticePopulateCopies("Populate",u"Populate "+lattice.Object.Label+u" with "+shape.Object.Label,shape.Object,None,lattice.Object,refmode)
-        deselect(sel)
-        FreeCAD.ActiveDocument.commitTransaction()        
-    else:
-        raise SelectionError("Bad selection","Please select some shapes and some arrays, first. You can select multiple shapes and one array, or multiple arrays and one shape.")
-    
-def cmdPopulate_shapes_FromTo():
-    sel = FreeCADGui.Selection.getSelectionEx()
-    (lattices, shapes) = lattice2BaseFeature.splitSelection(sel)
-    if activeBody() and len(shapes)>0:
-        throwBody()
-    if len(shapes) == 0 and len(sel) >= 3:
-        shapes = sel[:-2]
-        lattices = sel[-2:]
     if len(shapes) > 0 and len(lattices) == 2:
-        FreeCAD.ActiveDocument.openTransaction("Populate with copies")
+        # move shapes from to
+        FreeCAD.ActiveDocument.openTransaction("Transport")
         latticeFrom = lattices[0]
         latticeTo = lattices[1]
         for shape in shapes:
-            CreateLatticePopulateCopies("Populate",u"Moved "+shape.Object.Label, shape.Object, latticeFrom.Object, latticeTo.Object,"Use PlacementsFrom")
+            CreateLatticePopulateCopies("Populate",u"Moved "+shape.Object.Label, shape.Object, latticeFrom.Object, latticeTo.Object,'Use PlacementsFrom')
         deselect(sel)
         FreeCAD.ActiveDocument.commitTransaction()
+    elif len(shapes) == 0 and len(lattices) == 3:
+        # move array from to
+        FreeCAD.ActiveDocument.openTransaction("Transport")
+        shape = lattices[0]
+        latticeFrom = lattices[1]
+        latticeTo = lattices[2]
+        for shape in shapes:
+            CreateLatticePopulateCopies("Populate",u"Moved "+shape.Object.Label, shape.Object, latticeFrom.Object, latticeTo.Object,'Use PlacementsFrom')
+        deselect(sel)
+        FreeCAD.ActiveDocument.commitTransaction()
+    elif len(shapes) > 0 and len(lattices) == 1:
+        # populate shapes
+        FreeCAD.ActiveDocument.openTransaction("Populate with copies")
+        lattice = lattices[0]
+        for shape in shapes:
+            CreateLatticePopulateCopies("Populate",u"Populate "+lattice.Object.Label+u" with "+shape.Object.Label,shape.Object,None,lattice.Object,'Auto')
+        deselect(sel)
+        FreeCAD.ActiveDocument.commitTransaction()
+    elif len(shapes) == 0 and (len(lattices) == 2 or len(lattices) > 3):
+        # populate placements
+        FreeCAD.ActiveDocument.openTransaction("Populate with copies")
+        shapes = lattices[:-1]
+        lattice = lattices[-1]
+        for shape in shapes:
+            CreateLatticePopulateCopies("Populate",u"Populate "+lattice.Object.Label+u" with "+shape.Object.Label, shape.Object, None, lattice.Object,'Auto')
+        deselect(sel)
+        FreeCAD.ActiveDocument.commitTransaction()        
     else:
-        raise SelectionError("Bad selection","Please select either:\n one or more shapes, and two placements/arrays \nor\nthree placements/arrays")
+        raise SelectionError("Bad selection",
+            "You selected {n_lattices} arrays of placements and {n_shapes} shapes. This is not supported.\n\n"
+            "You can select:\n"
+            " * N shapes and 1 array, to populate that array with the shapes\n"
+            " * N shapes and 2 arrays, to move shapes from array1 to array2\n"
+            " * 2 arrays, to populate array2 with array1\n"
+            " * 3 arrays, to move array1 from array2 to array3\n"
+            " * 4 or more arrays, to populate last array with all other arrays"
+            .format(n_lattices= len(lattices), n_shapes= len(shapes))
+        )
 
 
-class _CommandLatticePopulateCopies_Normal:
+class CommandLatticePopulateCopies:
     "Command to create LatticePopulateCopies feature"
     def GetResources(self):
-        return {'Pixmap'  : getIconPath("Lattice2_PopulateCopies_Normal.svg"),
+        return {'Pixmap'  : getIconPath("Lattice2_PopulateCopies.svg"),
-                'MenuText': QtCore.QT_TRANSLATE_NOOP("Lattice2_PopulateCopies","Populate with copies"),
+                'MenuText': "Populate with copies",
                 'Accel': "",
-                'ToolTip': QtCore.QT_TRANSLATE_NOOP("Lattice2_PopulateCopies","Populate with copies: put copies of an object at every placement in an array. Select the object(s) to be copied, and the placement/array.")}
+                'ToolTip': "Populate with copies: put copies of an object at every placement in an array. Select the object(s) to be copied, and the placement/array."}
         
     def Activated(self):
         try:
             if len(FreeCADGui.Selection.getSelection())==0:
                 infoMessage("Populate with copies",
-                    "Populate with copies command. Places a copy of a selected object placed under selected placement.\n\n"+
+                    "Populate with copies command. Places a copy of a selected object at every placement in an array of placements.\n\n"+
                     "Please select some objects, and a placement/an array of placements. Then invoke the command.\n\n"+
-                    "A copy of object will pe made and placed in local coordinate system of each placement in an array. Placement of the object is taken into account, and becomes a placement in local coordinates of a placement of the array item.")
+                    "You can select:\n"
+                    " * N shapes and 1 array, to populate that array with the shapes\n"
+                    " * N shapes and 2 arrays, to move shapes from array1 to array2\n"
+                    " * 2 arrays, to populate array2 with array1\n"
+                    " * 3 arrays, to move array1 from array2 to array3\n"
+                    " * 4 or more arrays, to populate last array with all other arrays"
+                )
                 return
-            cmdPopulate_shapes_nonFromTo("Origin")
+            cmdPopulateCopies()
         except Exception as err:
             msgError(err)
             
@@ -296,85 +336,9 @@ class _CommandLatticePopulateCopies_Normal:
             return False
             
 if FreeCAD.GuiUp:
-    FreeCADGui.addCommand('Lattice2_PopulateCopies_Normal', _CommandLatticePopulateCopies_Normal())
+    FreeCADGui.addCommand('Lattice2_PopulateCopies', CommandLatticePopulateCopies())
 
-class _CommandLatticePopulateCopies_Array:
+exportedCommands = ['Lattice2_PopulateCopies']
-    "Command to create LatticePopulateCopies feature"
-    def GetResources(self):
-        return {'Pixmap'  : getIconPath("Lattice2_PopulateCopies_Array.svg"),
-                'MenuText': QtCore.QT_TRANSLATE_NOOP("Lattice2_PopulateCopies","Populate with copies: Build Array"),
-                'Accel': "",
-                'ToolTip': QtCore.QT_TRANSLATE_NOOP("Lattice2_PopulateCopies","Populate with copies: Build Array: poplate placements with copies so that the array passes through original shape. Select the object(s) to be copied, and the placement/array.")}
-        
-    def Activated(self):
-        try:
-            if len(FreeCADGui.Selection.getSelection())==0:
-                infoMessage("Populate with copies: Build Array",
-                    "Populate with copies: Build Array command. Creates an array of shapes.\n\n"+
-                    "Please select some objects, and the array of placements. Then invoke the command. Object can also be a placement/array.\n\n"+
-                    "Compared to plain 'Populate With copies' command, the placements are treated as being relative to the first placement in the array. As a result, the array built always includes the original object as-is.")
-                return
-            cmdPopulate_shapes_nonFromTo("First item")
-        except Exception as err:
-            msgError(err)
-            
-    def IsActive(self):
-        if FreeCAD.ActiveDocument:
-            return True
-        else:
-            return False
-            
-if FreeCAD.GuiUp:
-    FreeCADGui.addCommand('Lattice2_PopulateCopies_Array', _CommandLatticePopulateCopies_Array())
-
-class _CommandLatticePopulateCopies_Move:
-    "Command to create LatticePopulateCopies feature"
-    def GetResources(self):
-        return {'Pixmap'  : getIconPath("Lattice2_PopulateCopies_Move.svg"),
-                'MenuText': QtCore.QT_TRANSLATE_NOOP("Lattice2_PopulateCopies","Moved object"),
-                'Accel': "",
-                'ToolTip': QtCore.QT_TRANSLATE_NOOP("Lattice2_PopulateCopies","Moved object: move object from one placement to another placement. Select the object, placement to move from, and placement to move to. Arrays of placements are accepted.")}
-        
-    def Activated(self):
-        try:
-            if len(FreeCADGui.Selection.getSelection())==0:
-                infoMessage("Moved Object",
-                    "Moved Object command. Creates a moved copy of a shape.\n\n"+
-                    "The shape is moved from one placement to another placement. Please select some shapes, then placement to move from, and placement to move to (order matters).\n"+
-                    "Placement 'to' can be an array of placements; the array of objects will be created in this case. If 'to' is an array, 'from' can be either a single placement, or an array of matching length.\n\n"+
-                    "Object can itself be an array of placements.")
-                return
-            cmdPopulate_shapes_FromTo()
-        except Exception as err:
-            msgError(err)
-            
-    def IsActive(self):
-        if FreeCAD.ActiveDocument:
-            return True
-        else:
-            return False
-            
-if FreeCAD.GuiUp:
-    FreeCADGui.addCommand('Lattice2_PopulateCopies_Move', _CommandLatticePopulateCopies_Move())
-
-class _CommandLatticePopulateCopiesGroup:
-    def GetCommands(self):
-        return ("Lattice2_PopulateCopies_Normal","Lattice2_PopulateCopies_Array","Lattice2_PopulateCopies_Move") 
-
-    def GetDefaultCommand(self): # return the index of the tuple of the default command. 
-        return 0
-
-    def GetResources(self):
-        return { 'MenuText': 'Populate with copies:', 
-                 'ToolTip': 'Populate with copies: put a copy of an object at every placement in an array of placements.'}
-        
-    def IsActive(self): # optional
-        return True
-        
-if FreeCAD.GuiUp:
-    FreeCADGui.addCommand('Lattice2_PopulateCopiesGroupCommand',_CommandLatticePopulateCopiesGroup())
-
-exportedCommands = ['Lattice2_PopulateCopiesGroupCommand']
 
 # -------------------------- /Gui command --------------------------------------------------
 

lattice2ProjectArray.py

@@ -64,22 +64,38 @@ class LatticeProjectArray(lattice2BaseFeature.LatticeFeature):
         
         obj.addProperty("App::PropertyEnumeration","Multisolution","Lattice ProjectArray","Specify the way of dealing with multiple solutions of projection")
         obj.Multisolution = ['use first','use all']
-                
+        
+    def assureProperties(self, selfobj, creating_new = False):
+        super(LatticeProjectArray, self).assureProperties(selfobj, creating_new)
+
+        created = self.assureProperty(selfobj, 
+            'App::PropertyEnumeration', 
+            'ReferencePlacementOption', 
+            ['external', 'origin', 'inherit', 'projected'],
+            "Lattice ProjectArray", 
+            "Reference placement, corresponds to the original occurrence of the object to be populated."
+        )
+        if created:
+            selfobj.ReferencePlacementOption = 'inherit'
+
+    def recomputeReferencePlm(self, selfobj, selfplacements): #override
+        if selfobj.ReferencePlacementOption == 'external':
+            super(LinearProjectArray, self).recomputeReferencePlm(selfobj, selfplacements)
+        #the remaining options are handled in derivedExecute
 
     def derivedExecute(self,obj):
-        #validity check
-        if not lattice2BaseFeature.isObjectLattice(screen(obj.Base)):
-            lattice2Executer.warning(obj,"A lattice object is expected as Base, but a generic shape was provided. It will be treated as a lattice object; results may be unexpected.")
-        
         toolShape = screen(obj.Tool).Shape
         if lattice2BaseFeature.isObjectLattice(screen(obj.Tool)):
-            lattice2Executer.warning(obj,"A lattice object was provided as Tool. It will be converted into points; orientations will be ignored.")
+            lattice2Executer.warning(obj, "A lattice object was provided as Tool. It will be converted into points; orientations will be ignored.")
-            leaves = LCE.AllLeaves(toolShape)
+            plms = lattice2BaseFeature.getPlacementsList(obj.Tool)
-            points = [Part.Vertex(leaf.Placement.Base) for leaf in leaves]
+            points = [Part.Vertex(plm.Base) for plm in plms]
             toolShape = Part.makeCompound(points)
 
-        leaves = LCE.AllLeaves(screen(obj.Base).Shape)
+        ref = obj.ReferencePlacementOption
-        input = [leaf.Placement for leaf in leaves]
+
+        input = lattice2BaseFeature.getPlacementsList(obj.Base, obj)
+        if ref == 'projected':
+            input.append(lattice2BaseFeature.getReferencePlm(obj.Base))
 
         output = [] #variable to receive the final list of placements
         
@@ -170,6 +186,17 @@ class LatticeProjectArray(lattice2BaseFeature.LatticeFeature):
                 if not isMultiSol:
                     break
         
+        if ref == 'external':
+            pass
+        elif ref == 'origin':
+            self.setReferencePlm(obj, None)
+        elif ref == 'inherit':
+            self.setReferencePlm(obj, lattice2BaseFeature.getReferencePlm(obj.Base))
+        elif ref == 'projected':
+            self.setReferencePlm(obj, output.pop())
+        else:
+            raise NotImplementedError("Reference option not implemented: " + ref)
+
         return output
         
         
@@ -189,7 +216,7 @@ def CreateLatticeProjectArray(name):
     iLtc = 0 #index of lattice object in selection
     iStc = 1 #index of stencil object in selection
     for i in range(0,len(sel)):
-        if lattice2BaseFeature.isObjectLattice(sel[i]):
+        if lattice2BaseFeature.isObjectLattice(sel[i].Object):
             iLtc = i
             iStc = i-1 #this may give negative index, but python accepts negative indexes
             break

lattice2Resample2.py

@@ -0,0 +1,257 @@
+#***************************************************************************
+#*                                                                         *
+#*   Copyright (c) 2018 - Victor Titov (DeepSOIC)                          *
+#*                                               <vv.titov@gmail.com>      *  
+#*                                                                         *
+#*   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__="Lattice Resample object: changes the number of placements in an array, maintaining overall path. Aka interpolation."
+__author__ = "DeepSOIC"
+__url__ = ""
+
+import FreeCAD as App
+import Part
+
+from lattice2Common import *
+import lattice2BaseFeature
+import lattice2InterpolatorUtil as LIU
+import lattice2Executer
+from lattice2ValueSeriesGenerator import ValueSeriesGenerator
+
+# -------------------------- document object --------------------------------------------------
+
+def dotProduct(list1,list2):
+    sum = 0
+    for i in range(0,len(list1)):
+        sum += list1[i]*list2[i]
+    return sum
+
+def makeLatticeResample(name):
+    '''makeLatticeResample(name): makes a LatticeResample object.'''
+    return lattice2BaseFeature.makeLatticeFeature(name, LatticeResample, ViewProviderLatticeResample)
+
+class LatticeResample(lattice2BaseFeature.LatticeFeature):
+    "The Lattice Resample object"
+    
+    def derivedInit(self,selfobj):
+        selfobj.addProperty("App::PropertyLink","Base","Lattice Resample","Lattice, the array of placements to be interpolated.")
+                
+        selfobj.addProperty("App::PropertyEnumeration","TranslateMode","Lattice Resample","What to do with translation part of placements")
+        selfobj.TranslateMode = ['interpolate', 'reset']
+        selfobj.TranslateMode = 'interpolate'
+        
+        selfobj.addProperty("App::PropertyEnumeration","OrientMode","Lattice Resample","what to do with orientation part of placements")
+        selfobj.OrientMode = ['interpolate', 'reset']
+        selfobj.OrientMode = 'interpolate'
+        
+        self.assureGenerator(selfobj)
+        selfobj.ValuesSource = "Generator"
+        selfobj.GeneratorMode = "SpanN"
+        selfobj.EndInclusive = True
+        selfobj.SpanStart = 0.0
+        selfobj.SpanEnd = 1.0
+        selfobj.Step = 1.0/51.0
+        selfobj.Count = 51
+        
+    def assureProperties(self, selfobj, creating_new = False):
+        super(LatticeResample, self).assureProperties(selfobj, creating_new)
+
+        created = self.assureProperty(selfobj, 
+            'App::PropertyEnumeration', 
+            'ReferencePlacementOption', 
+            ['external', 'origin', 'inherit', 'SpanStart', 'SpanEnd', 'at custom value', 'first placement', 'last placement'],
+            "Lattice Resample", 
+            "Reference placement, corresponds to the original occurrence of the object to be populated."
+        )
+        if created:
+            selfobj.ReferencePlacementOption = 'SpanStart'
+        self.assureProperty(selfobj, 'App::PropertyFloat', 'ReferenceValue', 0.0, "Lattice Resample", "Sets the value to use for generating ReferencePlacement. This value sets, what coordinate the object to be populated corresponds to.")
+
+    def assureGenerator(self, selfobj):
+        '''Adds an instance of value series generator, if one doesn't exist yet.'''
+        if hasattr(self,"generator"):
+            return
+        self.generator = ValueSeriesGenerator(selfobj)
+        self.generator.addProperties(groupname= "Lattice Array", 
+                                     groupname_gen= "Lattice Series Generator", 
+                                     valuesdoc= "List of parameter values. Values should be in range 0..n-1 for interpolation, and can be outside for extrapolation.",
+                                     valuestype= "App::PropertyFloat")
+    
+    def updateReadonlyness(self, selfobj):
+        super(LatticeResample, self).updateReadonlyness(selfobj)
+        
+        self.assureGenerator(selfobj)
+        self.generator.updateReadonlyness()
+        
+        selfobj.setEditorMode('ReferenceValue', 0 if selfobj.ReferencePlacementOption == 'at custom value' else 2)
+
+
+    def recomputeReferencePlm(self, selfobj, selfplacements): #override
+        if selfobj.ReferencePlacementOption == 'external':
+            super(LatticeResample, self).recomputeReferencePlm(selfobj, selfplacements)
+        #the remaining options are handled in derivedExecute
+
+    def derivedExecute(self,selfobj):
+        self.assureGenerator(selfobj)
+        
+        self.generator.execute()
+        values = [float(strv) for strv in selfobj.Values]
+
+        input = lattice2BaseFeature.getPlacementsList(selfobj.Base)
+        
+        if len(input) < 2:
+            raise ValueError("At least 2 placements ar needed to interpolate; there are just "+str(len(input))+" in base array.")
+
+        #cache mode comparisons, for speed
+        posIsInterpolate = selfobj.TranslateMode == 'interpolate'
+        posIsReset = selfobj.TranslateMode == 'reset'
+        
+        oriIsInterpolate = selfobj.OrientMode == 'interpolate'
+        oriIsReset = selfobj.OrientMode == 'reset'        
+        
+        # construct interpolation functions
+        #  prepare lists of input samples
+        IArray = [float(i) for i in range(0,len(input))]
+        XArray = [plm.Base.x for plm in input]
+        YArray = [plm.Base.y for plm in input]
+        ZArray = [plm.Base.z for plm in input]
+        QArrays = [[],[],[],[]]
+        prevQ = [0.0]*4
+        for plm in input:
+            Q = plm.Rotation.Q
+            #test if quaernion has changed sign compared to previous one. 
+            # Quaternions of opposite sign are equivalent in terms of rotation, 
+            # but sign changes confuse interpolation, so we are detecting sign 
+            # changes and discarding them
+            if dotProduct(Q,prevQ) < -ParaConfusion: 
+                Q = [-v for v in Q] 
+            for iQ in [0,1,2,3]:
+                QArrays[iQ].append( Q[iQ] ) 
+            prevQ = Q
+        
+        #  constuct function objects
+        if posIsInterpolate:
+            FX = LIU.InterpolateF(IArray,XArray)
+            FY = LIU.InterpolateF(IArray,YArray)
+            FZ = LIU.InterpolateF(IArray,ZArray)
+        if oriIsInterpolate:
+            FQs = []
+            for iQ in [0,1,2,3]:
+                FQs.append(LIU.InterpolateF(IArray,QArrays[iQ]))
+                
+        def plmByVal(val):
+            pos = App.Vector()
+            ori = App.Rotation()
+            if posIsInterpolate:
+                pos = App.Vector(FX.value(val), FY.value(val), FZ.value(val))
+            
+            if oriIsInterpolate:
+                ori = App.Rotation(FQs[0].value(val),
+                                   FQs[1].value(val),
+                                   FQs[2].value(val),
+                                   FQs[3].value(val))                
+            return App.Placement(pos, ori)
+
+        output = [plmByVal(val) for val in values]
+
+        # update reference placement
+        ref = selfobj.ReferencePlacementOption
+        if ref == 'external':
+            pass
+        elif ref == 'origin':
+            self.setReferencePlm(selfobj, None)
+        elif ref == 'inherit':
+            self.setReferencePlm(selfobj, lattice2BaseFeature.getReferencePlm(selfobj.Base))
+        elif ref == 'SpanStart':
+            self.setReferencePlm(selfobj, plmByVal(float(selfobj.SpanStart)))
+        elif ref == 'SpanEnd':
+            self.setReferencePlm(selfobj, plmByVal(float(selfobj.SpanEnd)))
+        elif ref == 'at custom value':
+            self.setReferencePlm(selfobj, plmByVal(float(selfobj.ReferenceValue)))
+        elif ref == 'first placement':
+            self.setReferencePlm(selfobj, output[0])
+        elif ref == 'last placement':
+            self.setReferencePlm(selfobj, output[-1])
+        else:
+            raise NotImplementedError("Reference option not implemented: " + ref)
+            
+        return output
+
+
+class ViewProviderLatticeResample(lattice2BaseFeature.ViewProviderLatticeFeature):
+        
+    def getIcon(self):
+        return getIconPath('Lattice2_Resample.svg')
+    
+    def claimChildren(self):
+        return [screen(self.Object.Base)]
+
+
+# -------------------------- /document object --------------------------------------------------
+
+# -------------------------- Gui command --------------------------------------------------
+
+def CreateLatticeResample(name):
+    sel = FreeCADGui.Selection.getSelectionEx()
+    FreeCAD.ActiveDocument.openTransaction("Create LatticeResample")
+    FreeCADGui.addModule("lattice2Resample2")
+    FreeCADGui.addModule("lattice2Executer")
+    FreeCADGui.doCommand("f = lattice2Resample2.makeLatticeResample(name='"+name+"')")
+    FreeCADGui.doCommand("f.Base = App.ActiveDocument."+sel[0].ObjectName)
+    FreeCADGui.doCommand("f.setExpression('SpanEnd', '{base}.NumElements - 1')".format(base= lattice2BaseFeature.source(sel[0].Object)[1].Name))
+    FreeCADGui.doCommand("for child in f.ViewObject.Proxy.claimChildren():\n"+
+                         "    child.ViewObject.hide()")
+    FreeCADGui.doCommand("lattice2Executer.executeFeature(f)")
+    FreeCADGui.doCommand("f = None")
+    FreeCAD.ActiveDocument.commitTransaction()
+
+
+class _CommandLatticeResample:
+    "Command to create LatticeResample feature"
+    def GetResources(self):
+        return {'Pixmap'  : getIconPath("Lattice2_Resample.svg"),
+                'MenuText': QtCore.QT_TRANSLATE_NOOP("Lattice2_Resample","Resample Array"),
+                'Accel': "",
+                'ToolTip': QtCore.QT_TRANSLATE_NOOP("Lattice2_Resample","Lattice Resample: interpolate placement-path using 3-rd degree b-spline interpolation.")}
+        
+    def Activated(self):
+        try:
+            if len(FreeCADGui.Selection.getSelection()) == 1 :
+                CreateLatticeResample(name = "Resample")
+            else:
+                infoMessage(
+                    "Lattice Resample command. Interpolates an array of placements, using 3-rd dergee bsplines.\n\n"
+                    "Please select one object, first. The object must be an array of placements."
+                )
+        except Exception as err:
+            msgError(err)
+            
+    def IsActive(self):
+        if FreeCAD.ActiveDocument:
+            return True
+        else:
+            return False
+            
+if FreeCAD.GuiUp:
+    FreeCADGui.addCommand('Lattice2_Resample2', _CommandLatticeResample())
+
+exportedCommands = ['Lattice2_Resample2']
+
+# -------------------------- /Gui command --------------------------------------------------
+

shapes/paperplane-orimarker-refplm.iv

@@ -0,0 +1,149 @@
+#Inventor V2.1 ascii
+
+PickStyle {
+  style UNPICKABLE
+}
+
+Coordinate3 {
+  point [ 2.4286127e-017 2.3747374e-017 0,
+      1 0 0,
+      -0.28144613 -0.48747897 0,
+      2.4286127e-017 2.3747374e-017 0,
+      -0.28144613 0.48747897 0,
+      1 0 0,
+      2.4286127e-017 2.3747374e-017 0,
+      1 0 0,
+      0 -6.3415941e-017 -0.28560001,
+      2.4286127e-017 2.3747374e-017 0,
+      1 0 0,
+      -0.28144613 -0.48747897 0,
+      -0.28144613 0.48747897 0,
+      0 -6.3415941e-017 -0.28560001 ]
+}
+
+Switch {
+  whichChild 0
+
+  Separator {
+
+    DEF myLines Separator {
+
+      MaterialBinding {
+        value OVERALL
+
+      }
+      Material {
+        ambientColor 0.2 0.2 0.2
+        diffuseColor 0.33333334 0.65490198 0.87058824
+        specularColor 0 0 0
+        emissiveColor 0 0 0
+        shininess 1
+        transparency 0
+
+      }
+      DrawStyle {
+        style LINES
+        lineWidth 2
+        linePattern 0xffff
+
+      }
+      SoBrepEdgeSet {
+        fields [ SFNode vertexProperty, MFInt32 coordIndex, MFInt32 materialIndex, MFInt32 normalIndex, MFInt32 textureCoordIndex, SFInt32 highlightIndex, MFInt32 selectionIndex ]
+        coordIndex [ 0, 1, -1, 1, 2, -1, 2, 0,
+            -1, 3, 4, -1, 4, 5, -1, 8,
+            6, -1, 7, 8, -1 ]
+        highlightIndex -1
+        selectionIndex -1
+
+      }
+    }
+    PolygonOffset {
+
+    }
+    DEF myFaces Separator {
+
+      ShapeHints {
+        vertexOrdering UNKNOWN_ORDERING
+        shapeType UNKNOWN_SHAPE_TYPE
+
+      }
+      MaterialBinding {
+        value OVERALL
+
+      }
+      Material {
+        ambientColor 0.2 0.2 0.2
+        diffuseColor 0 0.66666669 1
+        specularColor 0 0 0
+        emissiveColor 0 0 0
+        shininess 0.2
+        transparency 0.5
+
+      }
+      DrawStyle {
+        style FILLED
+
+      }
+      Normal {
+        vector [ 0 0 1,
+            0 0 1,
+            0 0 1,
+            0 0 1,
+            0 0 1,
+            0 0 1,
+            0 -1 2.220446e-016,
+            0 -1 2.220446e-016,
+            0 -1 2.220446e-016 ]
+
+      }
+      NormalBinding {
+        value PER_VERTEX_INDEXED
+
+      }
+      SoBrepFaceSet {
+        fields [ SFNode vertexProperty, MFInt32 coordIndex, MFInt32 materialIndex, MFInt32 normalIndex, MFInt32 textureCoordIndex, MFInt32 partIndex, SFInt32 highlightIndex, MFInt32 selectionIndex ]
+        coordIndex [ 1, 0, 2, -1, 5, 4, 3, -1,
+            7, 6, 8, -1 ]
+        partIndex [ 1, 1, 1 ]
+        highlightIndex -1
+        selectionIndex -1
+
+      }
+    }
+    DEF myPoints Separator {
+
+      MaterialBinding {
+        value OVERALL
+
+      }
+      Material {
+        ambientColor 0.2 0.2 0.2
+        diffuseColor 0.25490198 0.67450982 0.89803922
+        specularColor 0 0 0
+        emissiveColor 0 0 0
+        shininess 1
+        transparency 0
+
+      }
+      DrawStyle {
+        style POINTS
+        pointSize 2
+
+      }
+      SoBrepPointSet {
+        fields [ SFNode vertexProperty, SFInt32 startIndex, SFInt32 numPoints, SFInt32 highlightIndex, MFInt32 selectionIndex ]
+        startIndex 9
+        highlightIndex -1
+        selectionIndex [ 9, 10, 11, 12, 13 ]
+
+      }
+    }
+  }
+  USE myFaces
+  Separator {
+
+    USE myLines
+    USE myPoints
+  }
+  USE myPoints
+}

shapes/tetra-orimarker-refplm.iv

@@ -0,0 +1,160 @@
+#Inventor V2.1 ascii
+
+PickStyle {
+  style UNPICKABLE
+}
+
+Coordinate3 {
+  point [ 0 0 0,
+      -1.7347235e-018 -0.30000001 1.3877788e-017,
+      1.7347235e-018 0.30000001 -2.1359844e-015,
+      -1.7347235e-018 8.3193401e-018 0.30000001,
+      1.7347235e-018 0.30000001 -2.1359844e-015,
+      0 0 0,
+      1 -2.7755576e-017 -2.0816682e-017,
+      -1.7347235e-018 -0.30000001 1.3877788e-017,
+      -1.7347235e-018 -0.30000001 1.3877788e-017,
+      1 -2.7755576e-017 -2.0816682e-017,
+      -1.7347235e-018 8.3193401e-018 0.30000001,
+      1 -2.7755576e-017 -2.0816682e-017,
+      -1.7347235e-018 8.3193401e-018 0.30000001,
+      1.7347235e-018 0.30000001 -2.1359844e-015,
+      0 0 0,
+      -1.7347235e-018 -0.30000001 1.3877788e-017,
+      1.7347235e-018 0.30000001 -2.1359844e-015,
+      -1.7347235e-018 8.3193401e-018 0.30000001,
+      1 -2.7755576e-017 -2.0816682e-017 ]
+}
+
+Switch {
+  whichChild 0
+
+  Separator {
+
+    DEF myLines Separator {
+
+      MaterialBinding {
+        value OVERALL
+
+      }
+      Material {
+        ambientColor 0.2 0.2 0.2
+        diffuseColor 0.33333334 0.65490198 0.87058824
+        specularColor 0 0 0
+        emissiveColor 0 0 0
+        shininess 1
+        transparency 0
+
+      }
+      DrawStyle {
+        style LINES
+        lineWidth 2
+        linePattern 0xffff
+
+      }
+      SoBrepEdgeSet {
+        fields [ SFNode vertexProperty, MFInt32 coordIndex, MFInt32 materialIndex, MFInt32 normalIndex, MFInt32 textureCoordIndex, SFInt32 highlightIndex, MFInt32 selectionIndex ]
+        coordIndex [ 0, 1, -1, 2, 0, -1, 1, 3,
+            -1, 3, 2, -1, 4, 6, -1, 7,
+            6, -1, 9, 10, -1 ]
+        highlightIndex 6
+        selectionIndex -1
+
+      }
+    }
+    PolygonOffset {
+
+    }
+    DEF myFaces Separator {
+
+      ShapeHints {
+        vertexOrdering UNKNOWN_ORDERING
+        shapeType UNKNOWN_SHAPE_TYPE
+
+      }
+      MaterialBinding {
+        value OVERALL
+
+      }
+      Material {
+        ambientColor 0.2 0.2 0.2
+        diffuseColor 0 0.66666669 1
+        specularColor 0 0 0
+        emissiveColor 0 0 0
+        shininess 0.2
+        transparency 0.5
+
+      }
+      DrawStyle {
+        style FILLED
+
+      }
+      Normal {
+        vector [ -1 0 0,
+            -1 0 0,
+            -1 0 0,
+            -1 0 0,
+            0 0 -1,
+            0 0 -1,
+            0 0 -1,
+            0 0 -1,
+            0.20751435 -0.69171447 0.69171447,
+            0.20751435 -0.69171447 0.69171447,
+            0.20751435 -0.69171447 0.69171447,
+            0.20751435 0.69171447 0.69171447,
+            0.20751435 0.69171447 0.69171447,
+            0.20751435 0.69171447 0.69171447 ]
+
+      }
+      NormalBinding {
+        value PER_VERTEX_INDEXED
+
+      }
+      SoBrepFaceSet {
+        fields [ SFNode vertexProperty, MFInt32 coordIndex, MFInt32 materialIndex, MFInt32 normalIndex, MFInt32 textureCoordIndex, MFInt32 partIndex, SFInt32 highlightIndex, MFInt32 selectionIndex ]
+        coordIndex [ 1, 3, 0, -1, 0, 3, 2, -1,
+            4, 6, 5, -1, 5, 6, 7, -1,
+            10, 8, 9, -1, 13, 12, 11, -1 ]
+        partIndex [ 2, 2, 1, 1 ]
+        highlightIndex -1
+        selectionIndex -1
+
+      }
+    }
+    DEF myPoints Separator {
+
+      MaterialBinding {
+        value OVERALL
+
+      }
+      Material {
+        ambientColor 0.2 0.2 0.2
+        diffuseColor 0.25490198 0.67450982 0.89803922
+        specularColor 0 0 0
+        emissiveColor 0 0 0
+        shininess 1
+        transparency 0
+
+      }
+      DrawStyle {
+        style POINTS
+        pointSize 2
+
+      }
+      SoBrepPointSet {
+        fields [ SFNode vertexProperty, SFInt32 startIndex, SFInt32 numPoints, SFInt32 highlightIndex, MFInt32 selectionIndex ]
+        startIndex 14
+        highlightIndex -1
+        selectionIndex [ 14, 15, 16, 17, 18 ]
+
+      }
+    }
+  }
+  USE myFaces
+  Separator {
+
+    USE myLines
+    USE myPoints
+  }
+  USE myPoints
+}