Changed link connection to middle node in block

Hidden node was removed from a block to reduce empty space.
Link from previous level is connected to the node in the middle
(or the first of two middle nodes when even number of nodes).

Added ranksep in config to increase vertical space.

code/graph.py

@@ -1,4 +1,5 @@
 
+import math
 import os
 import uuid
 
@@ -109,25 +110,31 @@ class Graph:
                 "label": block.get("label", ""),
                 "texts": []
             }
-            hidden_node_id = get_id()
-            self.nodes.append({"id": hidden_node_id, "text": "", "hidden": True})
-            new_block["texts"].append(hidden_node_id)
 
-            links = block.get("links", [])
-            for link in links:
-                if link in linker:
-                    self.links.append({"from": linker[link], "to": hidden_node_id, "head": block_id, "hidden": False})
-                    del linker[link]
-
-            for text in block.get("texts", []):
+            #prev_node_id = ""
+            texts_in_block = block.get("texts", [])
+            for i, text in enumerate(texts_in_block):
                 node_id = get_id()
+                
+                # Link to middle node
+                if i == math.ceil(len(texts_in_block) / 2) - 1:
+                    for link in block.get("links", []):
+                        if link in linker:
+                            self.links.append({"from": linker[link], "to": node_id, "head": block_id, "hidden": False})
+                            del linker[link]
+                
                 self.nodes.append({"id": node_id, "text": text.get("text", ""), "hidden": False})
-                self.links.append({"from": hidden_node_id, "to": node_id, "head": "", "hidden": True})
+                
+                # Chain nodes in block
+                #if prev_node_id:
+                #    self.links.append({"from": prev_node_id, "to": node_id, "head": "", "hidden": True})
+                
                 new_block["texts"].append(node_id)
 
-                links = text.get("links", [])
-                for link in links:
+                for link in text.get("links", []):
                     linker[link] = node_id
+                
+                #prev_node_id = node_id
             
             self.blocks.append(new_block)
 

config.yaml

@@ -1,6 +1,6 @@
 dot:
   graph: |
-    graph [splines=ortho, nodesep=0.2]
+    graph [splines=ortho, nodesep=0.2, ranksep="0.5 equally"]
     //node [color=white]
     //edge [headport=n, tailport=s]
     compound=true