poor_mans_visualisation: Add a topo-v3 dumb visualiser

Now we can see something. It does not do anything, but uses topo-v3. Is
that progress? :-)

poor_mans_visualisation.py

@@ -13,7 +13,7 @@ if len(sys.argv) > 1:
 ref_topo = OspfFileTopologyProvider(ref_topo_file).get_topology()
 
 try:
-	cur_topo = BirdSocketTopologyProvider(instance='ospfv2', area=1).get_topology()
+	cur_topo = BirdSocketTopologyProvider(instance='ospf1', area=0).get_topology()
 except OSError as e:
 	raise NotImplementedError('Cannot create a mock topology atm') from e
 
@@ -50,37 +50,61 @@ for ann_id in annotators:
 
 # Show it
 
-from birdvisu.visualisation import annotators
-from birdvisu import maps_new
+#from birdvisu.visualisation import annotators
+#from birdvisu import maps_new
 
 # annotators.create_qgritems does not like being run without Qt initialization.
 from PySide6 import QtCore, QtGui, QtWidgets
 app = QtWidgets.QApplication([])
 
-annotated_topology = maps_new.annotate_topology(combined_topology,
-			# A semi-canonical set of annotators:
-			[
-				annotators.extract_positions,
-				annotators.random_position,
-				annotators.assign_brushes,
-				annotators.create_qgritems,
-				]
-			)
-
+#annotated_topology = maps_new.annotate_topology(combined_topology,
+#			# A semi-canonical set of annotators:
+#			[
+#				annotators.extract_positions,
+#				annotators.random_position,
+#				annotators.assign_brushes,
+#				annotators.create_qgritems,
+#				]
+#			)
+
+from random import randint
+
+shapes = dict()
+for k, v in annot_topo.topology.vertices.items():
+	size = 30 if k.is_router else 10
+	x, y = randint(0, 1920), randint(0, 1080)
+	shape = QtWidgets.QGraphicsRectItem(-size/2, -size/2, size, size)
+	shape.setPos(x,y)
+	# TODO:brush
+	label_text = str(IPv4Address(k.router_id)) if k.is_router else str(k.address) # Surprisingly works for all the possible addresses.
+	label = QtWidgets.QGraphicsSimpleTextItem(label_text, parent=shape)
+	label.setY(size*0.8)
+	text_width = label.boundingRect().width()
+	label.setX(-text_width/2)
+	shapes[k] = shape
+
+for e in annot_topo.topology.edges:
+	start = shapes[e.source].pos()
+	end = shapes[e.target].pos()
+	qlinef = QtCore.QLineF(start, end)
+	line = QtWidgets.QGraphicsLineItem(qlinef)
+	shapes[e] = line
 
 # Render the widget
 
 scene = QtWidgets.QGraphicsScene()
 
-for tagsrc in [
-		annotated_topology.router_annotations.values(),
-		annotated_topology.network_annotations.values(),
-		annotated_topology.link_annotations.values(),
-		]:
-	for taglist in tagsrc:
-		assert len(taglist) > 0
-		assert isinstance(taglist[-1], QtWidgets.QGraphicsItem)
-		scene.addItem(taglist[-1])
+#for tagsrc in [
+#		annotated_topology.router_annotations.values(),
+#		annotated_topology.network_annotations.values(),
+#		annotated_topology.link_annotations.values(),
+#		]:
+#	for taglist in tagsrc:
+#		assert len(taglist) > 0
+#		assert isinstance(taglist[-1], QtWidgets.QGraphicsItem)
+#		scene.addItem(taglist[-1])
+
+for sh in shapes.values(): scene.addItem(sh)
 
 view = QtWidgets.QGraphicsView(scene)
 #view.show()