Added canal demo

canal_demo.py

@@ -0,0 +1,25 @@
+from canal.cyclone import *
+
+num_tracks = 5
+
+input_nodes = {}
+for side in SwitchBoxSide:
+    input_nodes[side] = []
+    for track in range(num_tracks):
+        input_nodes[side].append(SwitchBoxNode(0, 0, track, 16, side, SwitchBoxIO.SB_IN))
+
+output_nodes = {}
+for side in SwitchBoxSide:
+    output_nodes[side] = []
+    for track in range(num_tracks):
+        output_nodes[side].append(SwitchBoxNode(0, 0, track, 16, side, SwitchBoxIO.SB_OUT))
+
+for track in range(num_tracks):
+    for side_from in SwitchBoxSide:
+        for side_to in SwitchBoxSide:
+            if side_from == side_to:
+                continue
+            input_node = input_nodes[side_from][track]
+            output_node = output_nodes[side_to][track]
+            print(f"Wire {input_node} -> {output_node}")
+            input_node.add_edge(output_node)