Increased line width for better readability when drawings are printed

Added possibility to set material and/or weight of each part
Part weight is calculated from volume and density if the material is configured

.gitignore

@@ -3,3 +3,4 @@
 __pycache__/
 *.py[cod]
 *$py.class
+/pydev/

InitGui.py

@@ -104,6 +104,9 @@ class AssemblyHandbookWorkbench(Gui.Workbench):
         self.importModule('ahb_cmd_view_refresh')
         toolbox.append("AHB_view_refresh")
         
+        self.importModule('ahb_cmd_export_parts_list')
+        toolbox.append("AHB_export_parts_list")
+
         if self.dev:
             self.importModule('ahb_cmd_reload')
             toolbox.append("AHB_reload")

ahb_cmd_export_parts_list.py

@@ -0,0 +1,109 @@
+import FreeCADGui as Gui
+import FreeCAD as App
+
+import ahb_utils
+from ahb_material import Material
+
+class PartInfo:
+    def __init__(self, workbench, document, obj):
+        self.document = document
+        self.reference = obj.Label
+        
+        if len(self.reference) == 3 and self.reference[0:1] in ['L', 'M', 'T', 'R', 'E']:
+            self.reference = 'TB_' + self.reference
+        
+        workbench.techDrawExtensions.initPartMetadata(obj)
+        
+        self.material = 'Unknown'
+        try:
+            self.material = obj.Assembly_handbook_Material
+        except:
+            pass
+        
+        self.size = [obj.Shape.BoundBox.XLength, obj.Shape.BoundBox.YLength, obj.Shape.BoundBox.ZLength] # in mm
+        self.volume = obj.Shape.Volume # in mm3
+        self.mass = -1 # in g (negative means unknown mass)
+        density = -1 # in g/cm3
+        material = Material.Get(self.material)
+        if material is not None:
+            density = material.density
+        if density >= 0: self.mass = density * (self.volume / 1000)
+        try:
+            part_mass = obj.Assembly_handbook_Weight
+            if part_mass >= 0:
+                self.mass = part_mass
+        except:
+            pass
+        self.count = 0
+
+class AHB_ExportPartsList:
+    def GetResources(self):
+        return {"MenuText": "Export parts list (CSV)",
+                "ToolTip": "Exports all parts of the selected assembly in CSV format",
+                "Pixmap": ""
+                }
+
+    def IsActive(self):
+        obj = Gui.Selection.getSelection()
+        if len(obj) == 1:
+            obj = obj[0]
+            return obj.TypeId == 'App::Part' and 'AssemblyType' in obj.PropertiesList
+        return False 
+
+    def Activated(self):
+        all_parts = {}
+        
+        rootAssembly = Gui.Selection.getSelection()[0]
+        workbench = Gui.getWorkbench("AssemblyHandbookWorkbench") #: :type workbench: AssemblyHandbookWorkbench
+
+        def add_part(part):
+            #print(part.Label + " (" + part.LinkedObject.Label + ")")
+            try:
+                info = all_parts[part.LinkedObject]
+            except:
+                info = PartInfo(workbench, part.LinkedObject.Document.Name, part.LinkedObject)
+                all_parts[part.LinkedObject] = info
+            
+            info.count += 1
+        
+        def process_group(group):
+            for part in group.Group:
+                if not part.Visibility:
+                    continue
+                
+                isPartLink = part.TypeId == 'App::Link' or (part.TypeId == 'Part::FeaturePython' and hasattr(part, 'LinkedObject'))
+                partType = None
+                isSinglePart = None
+                try:
+                    partType = part.Type
+                    isSinglePart = part.Assembly_handbook_IsSinglePart
+                except:
+                    pass
+                
+                if isPartLink:
+                    if isSinglePart != True and (partType == 'Assembly' or (part.Group[1].Label == 'Constraints' and part.Group[2].Label == 'Variables' and part.Group[3].Label == 'Configurations')):
+                        process_group(part.LinkedObject)
+                    else:
+                        add_part(part)
+                else:
+                    if part.TypeId != 'App::DocumentObjectGroup' and part.TypeId != 'Spreadsheet::Sheet' and partType != 'App::PropertyContainer':
+                        print("??? " + part.Label)
+                    pass
+        
+        print("Exporting all parts contained in assembly: " + rootAssembly.Label + "...")
+        process_group(rootAssembly)
+        
+        file_name = rootAssembly.Document.FileName.replace('.FCStd', '') + '_list.csv'
+        with open(file_name, "w") as f:
+            f.write("Document, Reference, Material, SizeX (mm), SizeY (mm), SizeZ (mm), Volume (cm3), Mass (g), Count\n")
+            for part in all_parts.values():
+                mass_str = ''
+                if part.mass >= 10:
+                    mass_str = str(int(part.mass + 0.5))
+                elif part.mass >= 0:
+                    mass_str = str(int(part.mass*10 + 0.5) / 10.0)
+                f.write(part.document + "," + part.reference + "," + part.material + "," + str(int(part.size[0]+0.5)) + "," + str(int(part.size[1]+0.5)) + "," + str(int(part.size[2]+0.5)) + "," + str(int(part.volume/100+0.5)/10.0) + "," + mass_str + ", " + str(part.count) + "\n")
+        print("Part list exported to " + file_name)
+
+from ahb_command import AHB_CommandWrapper
+AHB_CommandWrapper.addGuiCommand('AHB_export_parts_list', AHB_ExportPartsList())

ahb_cmd_new_step.py

@@ -10,7 +10,7 @@ class AHB_New_Step:
 				}
 
 	def IsActive(self):
-		return ahb_utils.getCurrentView() is not None
+		return True
 
 	def Activated(self):
 		import re
@@ -74,6 +74,7 @@ class AHB_New_Step:
 		view.CoarseView = True
 		view.addProperty("App::PropertyString", "Assembly_handbook_PreviousStepView", "Assembly_handbook")
 		view.addProperty("App::PropertyBool", "Assembly_handbook_RasterView", "Assembly_handbook")
+		view.addProperty("App::PropertyXLinkList", "Assembly_handbook_HideParts", "Assembly_handbook")
 		view.Assembly_handbook_RasterView = raster_view
 		if raster_view:
 			view.Visibility = False

ahb_cmd_view_annotate.py

@@ -69,12 +69,14 @@ class AHB_View_Annotate:
 					print(balloon.Name + " references missing object " + ref_name + ", removing balloon")
 					doc.removeObject(balloon.Name)
 		
+		balloonsCreated = []
 		for partLink in view.XSource:
-			balloonsCreated = workbench.techDrawExtensions.add_or_update_balloon(view, partLink, '')
-			if len(balloonsCreated) > 0:
-				regroupedBalloons = self.RegroupNearestSimilarBalloons(balloonsCreated)
-				self.PlaceBalloonsInCircle(regroupedBalloons)
-				#self.PlaceBalloonsInCircle(balloonsCreated)
+			balloonsCreated.extend(workbench.techDrawExtensions.add_or_update_balloon(view, partLink, ''))
+			
+		if len(balloonsCreated) > 0:
+			regroupedBalloons = self.RegroupNearestSimilarBalloons(balloonsCreated)
+			#self.PlaceBalloonsInCircle(regroupedBalloons)
+			self.PlaceBalloonsInCircle(balloonsCreated)
 	
 		workbench.techDrawExtensions.refreshOverlays(page)
 
@@ -86,13 +88,13 @@ class AHB_View_Annotate:
 			realBalloon = balloon[0] if type(balloon) is list else balloon
 			totalX = totalX + int(realBalloon.OriginX)
 			totalY = totalY + int(realBalloon.OriginY)
-		return App.Base.Vector2d(totalX / len(balloons), totalY / len(balloons))
+		return App.Vector(totalX / len(balloons), totalY / len(balloons))
 
 	def IsSimilarBalloonNear(self, balloonA, balloonB):
 		MAX_DISTANCE_BETWEEN_REGROUPED_BALLOONS = 50
 		if balloonA.Text == balloonB.Text:
-			pos = App.Base.Vector2d(balloonA.OriginX, balloonA.OriginY)
-			dist = pos.distance(App.Base.Vector2d(balloonB.OriginX, balloonB.OriginY))
+			pos = App.Vector(balloonA.OriginX, balloonA.OriginY)
+			dist = pos.distanceToPoint(App.Vector(balloonB.OriginX, balloonB.OriginY))
 			return dist < MAX_DISTANCE_BETWEEN_REGROUPED_BALLOONS
 		else:
 			return False
@@ -119,13 +121,13 @@ class AHB_View_Annotate:
 		for i in range(nbBalloons):
 			xPos = round(center.x + 600 * math.cos(balloonPosStep * i))
 			yPos = round(center.y + 600 * math.sin(balloonPosStep * i))
-			balloonPos = App.Base.Vector2d(xPos, yPos)
+			balloonPos = App.Vector(xPos, yPos)
 			# Find nearest arrow to avoid arrow crossing each other
 			smallestDistance = 0
 			balloonToUse = None
 			for balloon in balloons:
 				realBalloon = balloon[0] if type(balloon) is list else balloon
-				dist = balloonPos.distance(App.Base.Vector2d(realBalloon.OriginX, realBalloon.OriginY))
+				dist = balloonPos.distanceToPoint(App.Vector(realBalloon.OriginX, realBalloon.OriginY))
 				if smallestDistance == 0 or dist < smallestDistance:
 					smallestDistance = dist
 					balloonToUse = balloon

ahb_cmd_view_refresh.py

@@ -4,7 +4,7 @@ import FreeCAD as App
 class AHB_RefreshView:
 	def GetResources(self):
 		return {"MenuText": "Refresh page (final quality)",
-				"ToolTip": "Redraws the current page",
+				"ToolTip": "Redraws the current page, or if one or more pages are selected, redraw all the selected pages",
 				"Pixmap": ""
 				}
 
@@ -14,9 +14,20 @@ class AHB_RefreshView:
 
 	def Activated(self):
 		workbench = Gui.getWorkbench("AssemblyHandbookWorkbench") #: :type workbench: AssemblyHandbookWorkbench
-		page = workbench.techDrawExtensions.getActivePage()
-		if page is not None:
-			workbench.techDrawExtensions.forceRedrawPage(page, fast_render = False)
+		
+		selection = Gui.Selection.getSelection()
+		has_selected_pages = len(selection) > 0
+		for s in selection:
+			if s.TypeId != 'TechDraw::DrawPage':
+				has_selected_pages = False
+				
+		if has_selected_pages:
+			for page in selection:
+				workbench.techDrawExtensions.forceRedrawPage(page, fast_render = False)
+		else:
+			page = workbench.techDrawExtensions.getActivePage()
+			if page is not None:
+				workbench.techDrawExtensions.forceRedrawPage(page, fast_render = False)
 
 from ahb_command import AHB_CommandWrapper
 AHB_CommandWrapper.addGuiCommand('AHB_view_refresh', AHB_RefreshView())

ahb_document_observer.py

@@ -43,12 +43,29 @@ class DocLinkObserver:
 class DocObserver:
     changed_object_by_type = {}
     selection_by_type = {}
+    doc_callbacks = {}
     
     was_selected = []
     
     def __init__(self):
         Gui.Selection.addObserver(self)
         
+    def slotActivateDocument(self, doc):
+        #print('slotActivateDocument', doc.Name)
+        self._triggerDocumentEvent(doc, 'activate')
+        
+    def slotCreatedDocument(self, doc):
+        #print('slotCreatedDocument', doc.Name)
+        self._triggerDocumentEvent(doc, 'created')
+        
+    def slotDeletedDocument(self, doc):
+        #print('slotDeletedDocument', doc.Name)
+        self._triggerDocumentEvent(doc, 'deleted')
+        
+    def _triggerDocumentEvent(self, doc, event):
+        for callback in self.doc_callbacks.values():
+            callback(doc, event)
+    
     def slotChangedObject(self, obj, prop):
         #print("object changed: " + str(obj).replace('<', '').replace(' object>', '') + " " + obj.Name + " : " + str(prop))
         callbacks = self.changed_object_by_type.get(obj.TypeId, None)
@@ -95,3 +112,6 @@ class DocObserver:
             callbacks = {}
             self.selection_by_type[type_id] = callbacks
         callbacks[callback_id] = callback
+        
+    def onDocumentEvent(self, callback_id: str, callback):
+        self.doc_callbacks[callback_id] = callback

ahb_material.py

@@ -0,0 +1,24 @@
+class Material:
+    def __init__(self, ID, density):
+        self.ID = ID
+        self.density = density
+        
+    DB = []
+    
+    @staticmethod
+    def GetMaterialIDs():
+        result = []
+        for m in Material.DB:
+            result.append(m.ID)
+        return result
+    
+    @staticmethod
+    def Get(ID):
+        for m in Material.DB:
+            if m.ID == ID: return m
+        return None
+    
+Material.DB.append(Material('Stainless steel', density = 8.00))
+Material.DB.append(Material('Aluminium', density = 2.71))
+Material.DB.append(Material('Wood (pine)', density = 0.55))
+Material.DB.append(Material('Plywood', density = 0.6))

ahb_raster_view.py

@@ -1,5 +1,13 @@
 import FreeCAD as App
 import FreeCADGui as Gui
+from datetime import datetime
+
+def print_verbose(msg):
+	verbose = False
+	if verbose:
+		now = datetime.now()
+		current_time = now.strftime("%H:%M:%S")
+		print(current_time, msg)
 
 class RasterView:
 	def __init__(self, view):
@@ -89,7 +97,7 @@ class RasterView:
 				result.extend(self._flatten_objects_tree([obj.LinkedObject]))
 			elif obj.TypeId in ['App::Part', 'App::DocumentObjectGroup']:
 				result.extend(self._flatten_objects_tree(obj.Group))
-			elif obj.TypeId in ['Part::Feature', 'Part::FeaturePython', 'PartDesign::Body', 'PartDesign::CoordinateSystem', 'PartDesign::Line', 'Part::Mirroring', 'Part::Cut', 'Part::Part2DObjectPython']:
+			elif self._should_render(obj) or self._should_render_as_is(obj) or obj.TypeId in ['PartDesign::CoordinateSystem', 'PartDesign::Line']:
 				result.append(obj)
 				if hasattr(obj, 'Group'):
 					result.extend(self._flatten_objects_tree(obj.Group))
@@ -97,7 +105,10 @@ class RasterView:
 		return result
 	
 	def _should_render(self, obj):
-		return obj.TypeId in ['Part::Feature', 'Part::FeaturePython', 'PartDesign::Body', 'Part::Mirroring', 'Part::Cut', 'Part::Part2DObjectPython']
+		return obj.TypeId in ['Part::Feature', 'Part::FeaturePython', 'PartDesign::Body', 'Part::Mirroring', 'Part::Cut', 'Part::Part2DObjectPython', 'Part::MultiFuse', 'Part::Loft', 'Part::Torus', 'Part::Cylinder']
+	
+	def _should_render_as_is(self, obj):
+		return obj.TypeId in ['App::FeaturePython']
 		
 	def render(self, fast_render = True):
 		from pivy import coin
@@ -113,21 +124,45 @@ class RasterView:
 		
 		self.init_image()
 		
-		print('Rasterizing ' + view.Label + " to " + self.image_file_name + "...")
+		print_verbose('Rasterizing ' + view.Label + " to " + self.image_file_name + "...")
 		
 		dir = os.path.dirname(self.image_file_name)
 		if not os.path.exists(dir):
 			os.makedirs(dir)
 		
-		tmp_doc = App.newDocument('tmp_raster', hidden=False, temp=False)
+		if 'Assembly_handbook_RasterSavedView' in view.PropertiesList and view.Assembly_handbook_RasterSavedView is not None:
+			tmp_doc = view.Assembly_handbook_RasterSavedView.Document
+			close_tmp_doc = False
+		else:
+			tmp_doc = App.newDocument('tmp_raster', hidden=False, temp=False)
+			close_tmp_doc = True
+			
+		transparent_background = True
+		if 'Assembly_handbook_TransparentBackground' in view.PropertiesList:
+			transparent_background = view.Assembly_handbook_TransparentBackground
 			
 		objects_to_reset = {}
 		duplicated_parts = {}
 		try:
+			print_verbose("Preparing scene...")
+			
+			# Clean existing scene (if any)
+			sceneGroup = tmp_doc.getObject('Scene')
+			if sceneGroup is not None:
+				sceneGroup.removeObjectsFromDocument()
+				tmp_doc.removeObject(sceneGroup.Name)
+			
 			# construct new scene with links to the parts we want
+			sceneGroup = tmp_doc.addObject('App::DocumentObjectGroup', 'Scene')
 			prev_parts = []
 			new_parts = []
-			for part in view.XSource:
+			all_parts = view.XSource + view.Source
+			
+			objects_to_hide = []
+			if 'Assembly_handbook_HideParts' in view.PropertiesList:
+				objects_to_hide = self._flatten_objects_tree(view.Assembly_handbook_HideParts)
+			
+			for part in all_parts:
 				link = tmp_doc.addObject('App::Link', part.Name)
 				link.Label = part.Label
 				if part.TypeId == 'App::Link':
@@ -138,10 +173,14 @@ class RasterView:
 					link.Placement = part.Placement
 				else:
 					link.LinkedObject = part
+					if part.TypeId in ['Part::Part2DObjectPython']:
+						link.Placement = part.Placement
 					
 				is_new_part = workbench.techDrawExtensions.isNewPartInView(view, part)
 				
 				if not fast_render:
+					# check if another part with different render settings will conflict with ours
+					# a conflict occurs when two parts link to the same object (directly or indirectly), because render settings (such as color) are set at the object level
 					is_conflicting = False
 					if link.LinkedObject in duplicated_parts.keys():
 						link.LinkedObject = duplicated_parts[link.LinkedObject]
@@ -150,7 +189,7 @@ class RasterView:
 						for other_part in other_parts:
 							other_objects = self._flatten_objects_tree([other_part])
 							for obj in self._flatten_objects_tree([link]):
-								if obj in other_objects:
+								if self._should_render(obj) and obj in other_objects:
 									is_conflicting = True
 								
 						if is_conflicting:
@@ -162,6 +201,9 @@ class RasterView:
 							part_copy.Label = part.Label
 							duplicated_parts[link.LinkedObject] = part_copy
 							link.LinkedObject = part_copy
+							part_copy.ViewObject.Visibility = False
+				
+				sceneGroup.addObject(link)
 				
 				if is_new_part:
 					new_parts.append(link)
@@ -173,7 +215,7 @@ class RasterView:
 					if obj in objects_to_reset.keys():
 						continue
 					
-					if self._should_render(obj):
+					if self._should_render(obj) and not obj in objects_to_hide:
 						if not fast_render:
 							objects_to_reset[obj] = (
 								obj.ViewObject.Visibility,
@@ -185,6 +227,12 @@ class RasterView:
 								obj.ViewObject.LineWidth,
 								obj.ViewObject.DisplayMode
 							)
+							
+							if not obj.ViewObject.Visibility:
+								obj.ViewObject.ShapeMaterial.AmbientColor = (0, 0, 0)
+								obj.ViewObject.ShapeMaterial.DiffuseColor = (0, 0, 0)
+								obj.ViewObject.ShapeMaterial.SpecularColor = (0, 0, 0)
+								obj.ViewObject.ShapeMaterial.EmissiveColor = (0, 0, 0)
 					else:
 						objects_to_reset[obj] = (
 							obj.ViewObject.Visibility,
@@ -200,14 +248,32 @@ class RasterView:
 			rot *= coin.SbRotation(coin.SbVec3f(0,0,1), coin.SbVec3f(view.Direction.x,view.Direction.y,view.Direction.z))
 			cam.orientation.setValue(rot)
 			
-			tmp_doc_view.fitAll()
+			targetViewVolume = None
+			try:
+				targetViewVolume = view.Assembly_handbook_ViewVolume
+			except:
+				pass
+			
+			if targetViewVolume is None:
+				tmp_doc_view.fitAll()
+			else:
+				sceneGroup.ViewObject.Visibility = False
+				viewVolumeLink = tmp_doc.addObject('App::Link', 'ViewVolume')
+				viewVolumeLink.LinkedObject = targetViewVolume
+				viewVolumeLink.Placement = targetViewVolume.Placement
+				tmp_doc_view.fitAll()
+				tmp_doc.removeObject(viewVolumeLink.Name)
+				sceneGroup.ViewObject.Visibility = True
+				print_verbose("Near=" + str(cam.nearDistance.getValue()) + ", far="+str(cam.farDistance.getValue()))
+				cam.nearDistance.setValue(cam.nearDistance.getValue() - 1000)
+				cam.farDistance.setValue(cam.farDistance.getValue() + 1000)
 			
 			viewVolume = cam.getViewVolume(0.0)
 			self.image_view.Assembly_handbook_ViewVolumeWidth = viewVolume.getWidth()
 			self.image_view.Assembly_handbook_ViewVolumeHeight = viewVolume.getHeight()
 			self.image_view.Assembly_handbook_ViewVolumeDepth = viewVolume.getDepth()
 			
-			max_res = 3200 # todo: keep aspect ratio when we limit max image dimensions
+			max_res = 3200
 			#max_res = 1500
 			resolution = [
 				int(viewVolume.getWidth() * view.Scale * 10),
@@ -221,23 +287,46 @@ class RasterView:
 				resolution[1] = int(max_res)
 			
 			if fast_render:
+				print_verbose("Fast rasterization...")
 				composite_img = self._render_lines(tmp_doc, resolution, prev_parts + new_parts, (0.0, 0.0, 0.0), [])
 			else:
 				# render old parts in gray lines
+				print_verbose("Rendering old parts (gray)...")
 				prev_parts_img = self._render_lines(tmp_doc, resolution, prev_parts, (0.6, 0.6, 0.6), [], fast_render)
 				
 				# render new parts in black lines (old parts can mask them)
+				print_verbose("Rendering new parts (black)...")
 				new_parts_img = self._render_lines(tmp_doc, resolution, new_parts, (0.0, 0.0, 0.0), prev_parts, fast_render)
 				
 				# create the composite image
+				print_verbose("Compositing images...")
 				composite_img = prev_parts_img.copy()
 				composite_img.paste(new_parts_img, None, new_parts_img)
 			
+			# Optimize the image to reduce storage size
+			if not fast_render:
+				print_verbose("Optimizing PNG size...")
+				num_colors = 32
+				
+				# All-or-nothing alpha: we use a white background and only make pixels fully transparent where alpha is zero, to not loose antialiasing
+				bg_img = Image.new(composite_img.mode, composite_img.size, color = '#ffffff')
+				bg_img.paste(composite_img.convert('RGB'), composite_img)
+				final_alpha = composite_img.split()[3].point(lambda p: 0 if p <= int(255/num_colors+0.5) else 255)
+				if not transparent_background:
+					final_alpha = final_alpha.point(lambda p: 255)
+				composite_img = bg_img
+				composite_img.putalpha(final_alpha)
+				
+				# Convert to indexed colors
+				composite_img = composite_img.quantize(colors=num_colors, dither=Image.Dither.NONE)
+			
 		finally:
+			print_verbose("Cleaning scene...")
+			#raise Exception("test")
 			# restore properties on objects we have modified
 			for obj, props in objects_to_reset.items():
 				obj.ViewObject.Visibility = props[0]
-				if self._should_render(obj):
+				if self._should_render(obj) and not obj in objects_to_hide:
 					obj.ViewObject.LineColor = props[1]
 					obj.ViewObject.ShapeMaterial.AmbientColor = props[2]
 					obj.ViewObject.ShapeMaterial.DiffuseColor = props[3]
@@ -245,14 +334,18 @@ class RasterView:
 					obj.ViewObject.ShapeMaterial.EmissiveColor = props[5]
 					obj.ViewObject.LineWidth = props[6]
 					obj.ViewObject.DisplayMode = props[7]
+					obj.ViewObject.PointMaterial.Transparency = 0
 			
 			# remove the temporary document
-			App.closeDocument(tmp_doc.Name)
+			if close_tmp_doc:
+				App.closeDocument(tmp_doc.Name)
+		
+		print_verbose("Finalizing view...")
 		
 		# Crop the image, which is also used to deduce the center of the source view
 		original_size = composite_img.size
 		
-		diff_source_img = composite_img.split()[3]
+		diff_source_img = composite_img.split()[-1]
 		bg = Image.new(diff_source_img.mode, diff_source_img.size, '#000000') # fills an image with the background color
 		diff = ImageChops.difference(diff_source_img, bg) # diff between the actual image and the background color
 		bbox = diff.getbbox() # finds border size (non-black portion of the image)
@@ -291,60 +384,80 @@ class RasterView:
 		image.Scale = image_scale
 		image.X = view.X
 		image.Y = view.Y
-		image.ImageFile = self.image_file_name # TODO: see if it's possible to set a relative path
+		image.ImageFile = self.image_file_name
 		image.ViewObject.Crop = True
 		image.Width = composite_img.size[0] * image_scale / 10.0 * 1.01
 		image.Height = composite_img.size[1] * image_scale / 10.0 * 1.01
 		image.recompute()
 		
+		print_verbose("Done")
+			
 	def _render_lines(self, doc, resolution, parts, line_color, masking_parts, fast_render = True):
 		import tempfile
 		from PIL import Image, ImageDraw, ImageFilter
 		
 		doc_view = Gui.getDocument(doc.Name).mdiViewsOfType('Gui::View3DInventor')[0]
 		
-		# render lines in black, background in red, fill shapes in green
-		# the green band contains the lines images, the red band contains the inverted alpha layer
+		# render lines in blue, background in red, fill shapes in green
+		# the green band contains the lines image, the red band contains the inverted alpha layer
+		# if there is a clipping plane set with "Fill clip plane", the blue band contains the intersection with the clip plane
+		configured = []
+		print_verbose('Preparing objects for line rendering...')
 		for link in doc.findObjects():
 			if link in parts or link in masking_parts:
 				link.ViewObject.Visibility = True
 				
 				# in current version of freecad, link override material does not allow to override all material properties, for example emissive color, so we have to change material of the linked object
 				for obj in self._flatten_objects_tree([link]):
+					if obj in configured: continue
+					configured.append(obj)
+					
 					if self._should_render(obj) and not fast_render:
-						obj.ViewObject.LineColor = (0.0, 0.0, 0.0, 0.0) if link in parts else (1.0, 0.0, 1.0)
+						obj.ViewObject.DisplayMode = 'Flat Lines'
+						obj.ViewObject.PointMaterial.Transparency = 1.0 # hide points
+						obj.ViewObject.LineColor = (0.0, 0.0, 1.0, 0.0) if link in parts else (1.0, 0.0, 1.0)
 						obj.ViewObject.ShapeMaterial.AmbientColor = (0.0, 0.0, 0.0, 0.0)
 						obj.ViewObject.ShapeMaterial.DiffuseColor = (0.0, 0.0, 0.0, 0.0)
 						obj.ViewObject.ShapeMaterial.SpecularColor = (0.0, 0.0, 0.0, 0.0)
-						obj.ViewObject.ShapeMaterial.EmissiveColor = (0.0, 1.0, 0.0, 0.0) if link in parts else (1.0, 0.0, 1.0)
+						obj.ViewObject.ShapeMaterial.EmissiveColor = (0.0, 1.0, 1.0, 0.0) if link in parts else (1.0, 0.0, 1.0)
 						
 						# We need to set two different values otherwise freecad does not always update LineWidth of sub-elements
 						obj.ViewObject.LineWidth = 1.0
-						obj.ViewObject.LineWidth = 2.0
+						obj.ViewObject.LineWidth = 3.0
 			else:
 				link.ViewObject.Visibility = False
 		
+		print_verbose('Rendering lines...')
 		temp_file_name = tempfile.gettempdir() + "/ahb_temp_image.png"
-		doc_view.saveImage(temp_file_name, resolution[0]+2, resolution[1]+2, "#ff0000") # we add 1 pixel border that we will need to crop later
+		#temp_file_name = "/home/youen/tmp/ahb_temp_image.png"
+		doc_view.saveImage(temp_file_name, resolution[0]+2, resolution[1]+2, "#ff00ff") # we add 1 pixel border that we will need to crop later
 		lines_bands_img = self._read_image(temp_file_name)
 		
 		lines_bands = lines_bands_img.split()
 		lines_img = lines_bands[1]
 		alpha_img = lines_bands[0].point(lambda p: 255 - p)
+		clip_img = lines_bands[2]
 		
 		generate_outlines = not fast_render
+		#generate_outlines = False
 		if generate_outlines:
 			# Render all shapes with different colors, in order to extract outlines (where color changes)
 			# This is needed because FreeCAD does not render lines on the boundary of curve shapes, such as spheres or cylinders
 			# The technique could be improved by using the depth buffer instead, in order to detect boundaries within the same object
+			print_verbose('Preparing objects for outline rendering...')
 			step = 8
 			r = step
 			g = step
 			b = step
+			configured = []
 			for link in doc.findObjects():
 				if link in parts or link in masking_parts:
 					for obj in self._flatten_objects_tree([link]):
+						if obj in configured: continue
+						configured.append(obj)
+					
 						if self._should_render(obj) and obj.TypeId != 'Part::Part2DObjectPython':
+							configured.append(obj)
 							obj.ViewObject.DisplayMode = 'Shaded'
 							obj.ViewObject.ShapeMaterial.AmbientColor = (0.0, 0.0, 0.0, 0.0)
 							obj.ViewObject.ShapeMaterial.DiffuseColor = (0.0, 0.0, 0.0, 0.0)
@@ -363,16 +476,19 @@ class RasterView:
 						else:
 							obj.ViewObject.Visibility = False
 			
+			print_verbose('Rendering shapes...')
 			doc_view.saveImage(temp_file_name, (resolution[0]+2)*2, (resolution[1]+2)*2, "#ffffff") # shapes are rendered at twice the resolution for antialiasing
 			shapes_img = self._read_image(temp_file_name)
 			
+			print_verbose('Extracting outlines...')
 			outlines_img = None
-			for x in range(0, 3):
-				for y in range(0, 3):
-					if x == 1 and y == 1: continue
-					kernel = [0, 0, 0, 0, 1, 0, 0, 0, 0]
-					kernel[y * 3 + x] = -1
-					partial_outlines = shapes_img.filter(ImageFilter.Kernel((3, 3), kernel, 1, 127))
+			for x in range(0, 5):
+				for y in range(0, 5):
+					if x == 2 and y == 2: continue
+					if (x-2)*(x-2) + (y-2)+(y-2) > 4: continue
+					kernel = [0,0,0,0,0, 0,0,0,0,0, 0,0,1,0,0, 0,0,0,0,0, 0,0,0,0,0]
+					kernel[y * 5 + x] = -1
+					partial_outlines = shapes_img.filter(ImageFilter.Kernel((5, 5), kernel, 1, 127))
 					partial_outlines = partial_outlines.point(lambda p: 255 if p == 127 else 0)
 					partial_outlines = partial_outlines.convert("L")
 					partial_outlines = partial_outlines.point(lambda p: 255 if p == 255 else 0)
@@ -381,6 +497,7 @@ class RasterView:
 					else:
 						outlines_img.paste(partial_outlines, None, partial_outlines.point(lambda p: 0 if p == 255 else 255))
 		
+			print_verbose('Combining lines and outlines...')
 			lines_fullres = lines_img.resize(outlines_img.size, Image.NEAREST)
 			lines_fullres.paste(outlines_img, None, outlines_img.point(lambda p: 255 if p == 0 else 0))
 			#lines_fullres.paste(255, alpha_fullres.point(lambda p: 255 if p == 0 else 0))
@@ -395,6 +512,7 @@ class RasterView:
 			alpha_img = alpha_img.point(lambda p: 0 if p == 0 else 255)
 		
 		# colorize final image
+		print_verbose('Colorizing image...')
 		fill_color = (1.0, 1.0, 1.0)
 		result = Image.merge("RGBA", [
 			all_lines.point(lambda p: int(fill_color[0] * p + line_color[0] * (255.0 - p))),
@@ -403,6 +521,16 @@ class RasterView:
 			alpha_img
 		])
 		
+		# set clip color
+		if not fast_render:
+			clip_color = (0.5, 0.5, 0.5)
+			colorized_clip_img = Image.merge("RGB", [
+				clip_img.point(lambda p: int(clip_color[0] * (255.0 - p))),
+				clip_img.point(lambda p: int(clip_color[1] * (255.0 - p))),
+				clip_img.point(lambda p: int(clip_color[2] * (255.0 - p)))
+			])
+			result.paste(colorized_clip_img, clip_img.point(lambda p: 255 - p))
+		
 		# crop 1px borders
 		result = result.crop((1, 1, result.size[0] - 1, result.size[1] - 1))
 		

ahb_techdraw_extensions.py

@@ -7,6 +7,8 @@ import TechDraw, TechDrawGui
 from PySide import QtGui, QtCore
 TDG = TechDrawGui
 
+from ahb_material import Material
+
 class CursorItem(QtGui.QGraphicsItem):
 	def __init__(self, parent = None, view = None):
 		super().__init__(parent)
@@ -77,10 +79,16 @@ class TechDrawExtensions:
 	
 	enable_selected_part_highlight = False # disable for now, for performance reasons
 	
+	initialized_documents = []
+	
 	def __init__(self):
 		workbench = Gui.getWorkbench("AssemblyHandbookWorkbench") #: :type workbench: AssemblyHandbookWorkbench
 		workbench.docObserver.onObjectTypeChanged('balloon_changed', 'TechDraw::DrawViewBalloon', lambda obj, prop: self.onBalloonChanged(obj, prop))
 		workbench.docObserver.onObjectTypeSelected('balloon_selected', 'TechDraw::DrawViewBalloon', lambda operation, obj, sub, point: self.onBalloonSelected(operation, obj, sub, point))
+		workbench.docObserver.onDocumentEvent('techdrawext_doc_event', lambda doc, event: self.onDocumentEvent(doc, event))
+		
+		if App.ActiveDocument is not None:
+			self.onDocumentEvent(App.ActiveDocument, 'activate')		
 	
 	def repaint(self, view, fast_render = True):
 		self.views_to_repaint[view] = fast_render
@@ -88,6 +96,7 @@ class TechDrawExtensions:
 		
 	def _do_repaint(self):
 		from ahb_raster_view import RasterView
+		import Draft
 		
 		workbench = Gui.getWorkbench("AssemblyHandbookWorkbench") #: :type workbench: AssemblyHandbookWorkbench
 		
@@ -127,44 +136,28 @@ class TechDrawExtensions:
 				
 				overlay_frame_name = view.Label + "_frame"
 				overlay_frame = doc.getObject(overlay_frame_name)
-				
-				if overlay_frame is None:
-					import Draft
-					'''
-					points = [App.Vector(0.0, 0.0, 0.0), App.Vector(1.01, 0, 0)]
-					obj1 = Draft.makeWire(points, closed=False, face=False, support=None)
-					
-					points = [App.Vector(200.0, 0.0, 0.0), App.Vector(201.01, 0, 0)]
-					obj2 = Draft.makeWire(points, closed=False, face=False, support=None)
-
-					#overlay_frame = Draft.upgrade([], delete=True)
-					#overlay_frame.Label = overlay_frame_name
-					overlay_frame = App.ActiveDocument.addObject("Part::Part2DObjectPython", overlay_frame_name)
-					Draft.Block(overlay_frame)
-					overlay_frame.Components = [obj1, obj2]
-					Draft.ViewProviderDraftPart(overlay_frame.ViewObject)
-					doc.removeObject(obj1.Name)
-					doc.removeObject(obj2.Name)'''
-					
-					#overlay_frame = Draft.makeWire(points, closed=False, face=False, support=None)
-					overlay_frame = App.ActiveDocument.addObject("Part::Part2DObjectPython", overlay_frame_name)
-					Draft.Wire(overlay_frame)
-					pos = raster_view.projectImageViewPointTo3D(App.Vector(0,0,0))
-					pos2 = raster_view.projectImageViewPointTo3D(App.Vector(0.001,0.001,1))
-					overlay_frame.Points = [pos, pos2]
-					Draft.ViewProviderWire(overlay_frame.ViewObject)
-					overlay_frame.recompute()
+				if overlay_frame is not None:
+					doc.removeObject(overlay_frame.Name)
+				#overlay_frame = Draft.makeWire(points, closed=False, face=False, support=None)
+				overlay_frame = doc.addObject("Part::Part2DObjectPython", overlay_frame_name)
+				Draft.Wire(overlay_frame)
+				pos = raster_view.projectImageViewPointTo3D(App.Vector(0,0,0))
+				pos2 = raster_view.projectImageViewPointTo3D(App.Vector(0.001,0.001,1))
+				overlay_frame.Points = [pos, pos2]
+				Draft.ViewProviderWire(overlay_frame.ViewObject)
+				overlay_frame.recompute()
 					
 				overlay_frame2_name = view.Label + "_frame2"
 				overlay_frame2 = doc.getObject(overlay_frame2_name)
-				if overlay_frame2 is None:
-					overlay_frame2 = App.ActiveDocument.addObject("Part::Part2DObjectPython", overlay_frame2_name)
-					Draft.Wire(overlay_frame2)
-					pos = raster_view.projectImageViewPointTo3D(App.Vector(1,1,0))
-					pos2 = raster_view.projectImageViewPointTo3D(App.Vector(1.001,1.001,1))
-					overlay_frame2.Points = [pos, pos2]
-					Draft.ViewProviderWire(overlay_frame2.ViewObject)
-					overlay_frame2.recompute()
+				if overlay_frame2 is not None:
+					doc.removeObject(overlay_frame2.Name)
+				overlay_frame2 = doc.addObject("Part::Part2DObjectPython", overlay_frame2_name)
+				Draft.Wire(overlay_frame2)
+				pos = raster_view.projectImageViewPointTo3D(App.Vector(1,1,0))
+				pos2 = raster_view.projectImageViewPointTo3D(App.Vector(1.001,1.001,1))
+				overlay_frame2.Points = [pos, pos2]
+				Draft.ViewProviderWire(overlay_frame2.ViewObject)
+				overlay_frame2.recompute()
 				
 				overlay.Source = [overlay_frame, overlay_frame2]
 				
@@ -515,14 +508,15 @@ class TechDrawExtensions:
 		obj = self.getBalloonSourcePart(balloon)
 		path = self.getBalloonSourcePartPath(balloon)
 		
-		partDisplayName = 'Inconnu' if obj is None else self.getPartDisplayName(obj)
+		if obj is not None:
+			objectCenterView = workbench.techDrawExtensions.computePartCenter(view, obj, path)
 		
-		objectCenterView = workbench.techDrawExtensions.computePartCenter(view, obj, path)
+			balloon.OriginX = objectCenterView.x + balloon.Assembly_handbook_OriginOffsetX
+			balloon.OriginY = objectCenterView.y + balloon.Assembly_handbook_OriginOffsetY
 			
-		balloon.OriginX = objectCenterView.x + balloon.Assembly_handbook_OriginOffsetX
-		balloon.OriginY = objectCenterView.y + balloon.Assembly_handbook_OriginOffsetY
+			partDisplayName = 'Inconnu' if obj is None else self.getPartDisplayName(obj)
+			balloon.Text = partDisplayName
 		
-		balloon.Text = partDisplayName
 		balloon.ViewObject.Font = 'DejaVu Sans'
 		balloon.ViewObject.Fontsize = 4
 		balloon.BubbleShape = 'Inspection'
@@ -646,8 +640,24 @@ class TechDrawExtensions:
 			QTimer.singleShot(10, restoreKeepUpdated)
 			
 	def refreshOverlays(self, page, callback = None):
+		import os
+		
+		for view in page.Views:
+			if view.TypeId == 'TechDraw::DrawViewPart' and 'Assembly_handbook_RasterView' in view.PropertiesList and view.Assembly_handbook_RasterView:
+				view.purgeTouched() # make sure we don't trigger rendering of source views (this is awfully slow and doesn't even work for a lot of models)
+		
+		doc = page.Document
+		for image in page.Views:
+			if image.TypeId == 'TechDraw::DrawViewImage':
+				folder_name = '/' + os.path.basename(doc.FileName).replace('.FCStd', '') + '_raster/'
+				if folder_name in image.ImageFile:
+					full_path = doc.FileName.replace('.FCStd', '') + '_raster/' + image.ImageFile.split(folder_name)[1]
+					if image.ImageFile != full_path:
+						image.ImageFile = full_path
+		
 		if page.KeepUpdated:
-			callback()
+			if callback:
+				callback()
 		else:
 			page.KeepUpdated = True
 			def restoreKeepUpdated():
@@ -772,3 +782,48 @@ class TechDrawExtensions:
 			cache = ViewCache()
 			self.view_cache[view] = cache
 		return cache
+	
+	def onDocumentEvent(self, doc, event):
+		if event == 'activate':
+			if doc not in self.initialized_documents:
+				self.initialized_documents.append(doc)
+				self.initializeDocument(doc)
+		elif event == 'deleted':
+			if doc in self.initialized_documents:
+				self.initialized_documents.remove(doc)
+	
+	def initializeDocument(self, doc):
+		def doInit():
+			main_part = None
+			try:
+				for obj in doc.Objects:
+					if obj.TypeId == 'TechDraw::DrawPage':
+						self.onPageLoaded(obj)
+			
+				main_parts = doc.getObjectsByLabel(doc.Name)
+				if len(main_parts) == 1:
+					main_part = main_parts[0]
+			except:
+				pass
+			
+			if main_part is not None:
+				self.initPartMetadata(main_part)
+			
+		QTimer.singleShot(0, doInit)
+		
+	def initPartMetadata(self, part):
+		current_material = 'Unknown'
+		if 'Assembly_handbook_Material' in part.PropertiesList:
+			current_material = part.Assembly_handbook_Material
+		else:
+			part.addProperty("App::PropertyEnumeration", "Assembly_handbook_Material", "Assembly_handbook")
+		material_list = ['Unknown'] + Material.GetMaterialIDs()
+		part.Assembly_handbook_Material = material_list
+		part.Assembly_handbook_Material = material_list.index(current_material) if current_material in material_list else 0
+		
+		if 'Assembly_handbook_Weight' not in part.PropertiesList:
+			part.addProperty("App::PropertyFloat", "Assembly_handbook_Weight", "Assembly_handbook", 'Part weight in grams. Set a negative number if weight is unknown.')
+			part.Assembly_handbook_Weight = -1
+
+	def onPageLoaded(self, page):
+		self.refreshOverlays(page)