major refactor on processing approach

instead of processing from an Assembly Link prospective, it now just
pulls bodies from the first level Links in the Assembly. From those LCS
points are found. Planes and sketches are created from there

Macro/FlatpackWB.FCMacro

@@ -18,7 +18,7 @@ class FlatpackGroupViewProvider():
         self.Proxy = group
 
 class FlatpackWBTools():
-    def createDatumPlaneOnLink(self, part, link):
+    def createDatumPlaneOnLink(self, part):
         plane = part.newObject('PartDesign::Plane', 'DatumPlane')
 
         return plane
@@ -33,48 +33,69 @@ class FlatpackWBTools():
 
         self.links = self.findLinks(asm)
 
+        assembly_bodies = []
+
         for link in self.links:
-            attached_to = ad.getObject(link.AttachedTo.split('#')[1])
-            
-            # not much to do when attached to the root
-            if attached_to.Name == 'LCS_Origin':
-                print('Skipping LCS_Origin')
-                continue
-
-            print(link.Name, link.Placement)
-
-            # find all the App::Links that are on the same Plane as this one
-            coplaner_links = []
-            for i in [ l for l in link.OutList if l.TypeId == 'PartDesign::CoordinateSystem' ]:
-                if l not in coplaner_links and abs(link.Placement.Base.z - l.Placement.Base.z) < 0.000001:
-                    print(link.Label, l.Label, abs(link.Placement.Base.z- l.Placement.Base.z), link.Placement.Base.z==l.Placement.Base.z)
-                    coplaner_links.append(l)
-
-            print('coplaner_links', coplaner_links)
-            for cp_link in coplaner_links:
-                base = cp_link.Placement.Base
-
-                # create DatumPlane for Sketch Support
-                # TODO track planes per Z offset
-                plane = self.createDatumPlaneOnLink(link.LinkedObject, link)
-                plane.Visibility = False
-                plane.Placement.Base.z = base.z
-
-                # create Sketch for drawing attachment features
-                sketch = self.createSketch(link.LinkedObject, plane)
-                sketch.Visibility = False
-
-                # TODO needs input parameters from 1) the Flatpack object 2) the depth of the LinkedObject
-                sketch.addGeometry(Part.LineSegment(App.Vector(base.x-10, base.y, 0), App.Vector(base.x+10, base.y, 0)), False)
-                sketch.addGeometry(Part.LineSegment(App.Vector(base.x+10, base.y, 0), App.Vector(base.x+10, base.y + 5, 0)), False)
-                sketch.addGeometry(Part.LineSegment(App.Vector(base.x+10, base.y + 5, 0), App.Vector(base.x-10, base.y + 5, 0)), False)
-                sketch.addGeometry(Part.LineSegment(App.Vector(base.x-10, base.y + 5, 0), App.Vector(base.x-10, base.y, 0)), False)
-                
-                # TODO determine if Feature should be Pad or Pocket, based on inside/outside of BoundingBox
+            if link.LinkedObject not in assembly_bodies:
+                assembly_bodies.append(link.LinkedObject)
+
+            continue
+
+        for body in assembly_bodies:
+            sketch_planes = {}
+            sketch_pockets = {}
+            sketch_pads = {}
+
+            for lcs in self.findLCS(body.OutList):
+                base = lcs.Placement.Base
+                z = base.z
+
+                if sketch_planes.get(z) is None:
+                    # create new plane to hold sketch
+                    plane = self.createDatumPlaneOnLink(body)
+                    plane.Visibility = False
+                    plane.Placement.Base.z = z
+
+                    sketch_planes[z] = plane
+                else:
+                    plane = sketch_planes[z]
+
+                bb = body.Shape.BoundBox
+                if self.insideBB(bb, lcs.Placement.Base):
+                    sketch_book = sketch_pockets
+                    sketch_label = 'Inside'
+                else:
+                    sketch_book = sketch_pads
+                    sketch_label = 'Outside'
+
+                if sketch_book.get(z) is None:
+                    sketch = self.createSketch(body, plane)
+                    sketch.Visibility = False
+                    sketch.Label = sketch_label
+                    sketch_book[z] = sketch
+                else:
+                    sketch = sketch_book[z]
+
+                tab_length = abs(bb.ZMin) + bb.ZMax
+
+                sketch.addGeometry(Part.LineSegment(App.Vector(base.x-10, base.y - (tab_length / 2), 0), App.Vector(base.x+10, base.y - (tab_length / 2), 0)), False)
+                sketch.addGeometry(Part.LineSegment(App.Vector(base.x+10, base.y - (tab_length / 2), 0), App.Vector(base.x+10, base.y + tab_length / 2, 0)), False)
+                sketch.addGeometry(Part.LineSegment(App.Vector(base.x+10, base.y + tab_length / 2, 0), App.Vector(base.x-10, base.y + tab_length / 2, 0)), False)
+                sketch.addGeometry(Part.LineSegment(App.Vector(base.x-10, base.y + tab_length / 2, 0), App.Vector(base.x-10, base.y - (tab_length / 2), 0)), False)
+
+            for z in sketch_pads:
+                sketch = sketch_pads[z]
                 pad = link.LinkedObject.newObject('PartDesign::Pad', 'Pad')
                 pad.Profile = sketch
-                # TODO get value from elsewhere
-                pad.Length = 10
+                pad.Length = tab_length
+                pad.Midplane = 1
+                pad.Refine = 1
+
+            for z in sketch_pockets:
+                sketch = sketch_pockets[z]
+                pad = link.LinkedObject.newObject('PartDesign::Pocket', 'Pocket')
+                pad.Profile = sketch
+                pad.Length = tab_length
                 pad.Midplane = 1
                 pad.Refine = 1
 
@@ -99,16 +120,24 @@ class FlatpackWBTools():
     def findLinks(self, asm, discard_origin = False):
         return [] if not asm else [el for el in asm.OutList if el.TypeId == 'App::Link']
 
+    def findLCS(self, obj_list):
+        return [ l for l in obj_list if l.TypeId == 'PartDesign::CoordinateSystem' ]
+
     def getLinkOwner(self, link):
         return link.LinkedObject
 
+    def insideBB(self, bb, p):
+        return (p.x > bb.XMin and p.x < bb.XMax) and (p.y > bb.YMin and p.y < bb.YMax) and (p.z > bb.ZMin and p.z < bb.ZMax)
+
 FP = App.Flatpack = FlatpackWBTools()
 asm = Gui.ActiveDocument.Document.getObject('Model')
 
 asm = FP.findAssembly()
 
 if asm:
+    ad.openTransaction('flatpack')
     FP.createGroup(asm)
+    ad.commitTransaction()
 else:
     print('No Assembly selected.')