Navigation graph output: add color and improve layout

script/output-graph.js

@@ -1,23 +1,43 @@
 #!/usr/bin/env -S node --experimental-json-modules
 
 import network from "../src/tam/network.json";
+import color from "color";
 
 console.log("digraph {");
-console.log("graph[layout=neato, overlap=scalexy, splines=true, outputorder=nodesfirst]");
+console.log(`graph[\
+    layout=neato, \
+    mode=ipsep, \
+    overlap=ipsep, \
+    outputorder=nodesfirst, \
+]`);
 
-for (const [stopId, stop] of Object.entries(network.stops)) {
-    console.log(`${stopId}[label="${stop.properties.name}", shape=box]`);
+const stops = new Set();
+
+for (const stop of Object.values(network.stops)) {
+    stops.add(stop.properties.node);
+
+    const {node, name, routes} = stop.properties;
+    const backgrounds = routes.map(([line]) => network.lines[line].color);
+    const font = color(backgrounds[0]).isLight() ? "black" : "white";
+
+    console.log(`${node}[\
+        label="${name}", \
+        style=striped, \
+        fillcolor="${[...new Set(backgrounds)].join(":")}", \
+        fontcolor="${font}", \
+        shape=box, \
+    ]`);
 }
 
 const junctions = new Set();
 
 for (const [beginId, begin] of Object.entries(network.navigation)) {
-    if (!(beginId in network.stops)) {
+    if (!stops.has(beginId)) {
         junctions.add(beginId);
     }
 
     for (const endId in begin) {
-        if (!(endId in network.stops)) {
+        if (!stops.has(endId)) {
             junctions.add(endId);
         }
     }
@@ -29,7 +49,7 @@ for (const junction of junctions) {
 
 for (const [beginId, begin] of Object.entries(network.navigation)) {
     for (const endId in begin) {
-        console.log(`${beginId} -> ${endId}`);
+        console.log(`${beginId} -> ${endId}[len=2]`);
     }
 }