Added code to handle clipping view

ahb_raster_view.py

@@ -129,13 +129,25 @@ class RasterView:
 		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
 			
 		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 = []
@@ -315,7 +327,8 @@ class RasterView:
 					obj.ViewObject.DisplayMode = props[7]
 			
 			# remove the temporary document
-			App.closeDocument(tmp_doc.Name)
+			if close_tmp_doc:
+				App.closeDocument(tmp_doc.Name)
 		
 		print_verbose("Finalizing view...")
 		
@@ -375,8 +388,9 @@ class RasterView:
 		
 		doc_view = Gui.getDocument(doc.Name).mdiViewsOfType('Gui::View3DInventor')[0]
 		
-		# render lines in black, background in red, fill shapes in green
+		# render lines in blue, background in red, fill shapes in green
-		# the green band contains the lines images, the red band contains the inverted alpha layer
+		# 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():
@@ -389,11 +403,11 @@ class RasterView:
 					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.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
@@ -402,15 +416,18 @@ class RasterView:
 				link.ViewObject.Visibility = False
 		
 		print_verbose('Rendering lines...')
-		temp_file_name = tempfile.gettempdir() + "/ahb_temp_image.png"
+		#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
@@ -491,6 +508,15 @@ class RasterView:
 			alpha_img
 		])
 		
+		# set clip color
+		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))