Fix: Graphical Timetable (Streckengrafik) – Section Track Estimator Not Working for Train with direction changes (#614)

* Fix: the reported issue

* lint fix

* fix: This part can be significantly simplified due to all the changes that have been introduced for one-way train runs.

Author: aiAdrian

src/app/streckengrafik/services/sg-6-track.service.ts

@@ -112,14 +112,12 @@ export class Sg6TrackService implements OnDestroy {
         if (trainrunItem.isSection()) {
           const ps: SgTrainrunSection = trainrunItem.getTrainrunSection();
           if (ps.trainrunBranchType === TrainrunBranchType.Trainrun) {
-            if (ps.departurePathNode && ps.arrivalPathNode) {
-              const sectionKey = this.getSectionKey(ps, separateForwardBackwardTracks).key;
-              const sOfI = sectionsOfInterest.get(sectionKey);
-              if (sOfI === undefined) {
-                sectionsOfInterest.set(sectionKey, []);
-              }
-              sectionsOfInterest.get(sectionKey).push({item: trainrunItem, trainrun: ts});
+            const sectionKey = this.getSectionKey(ps, separateForwardBackwardTracks).key;
+            const sOfI = sectionsOfInterest.get(sectionKey);
+            if (sOfI === undefined) {
+              sectionsOfInterest.set(sectionKey, []);
             }
+            sectionsOfInterest.get(sectionKey).push({item: trainrunItem, trainrun: ts});
           }
         }
       });
@@ -130,31 +128,12 @@ export class Sg6TrackService implements OnDestroy {
   private getSectionKey(ps: SgTrainrunSection, separateForwardBackwardTracks: boolean) {
     let node1 = ps.arrivalPathNode === undefined ? undefined : ps.arrivalPathNode.nodeId;
     let node2 = ps.departurePathNode === undefined ? undefined : ps.departurePathNode.nodeId;
-    let key1 =
-      (ps.arrivalPathNode === undefined
-        ? "undefined_" + separateForwardBackwardTracks
-        : ps.arrivalPathNode.nodeShortName) +
-      "_" +
-      node1 +
-      "_" +
-      ps.index;
-    let key2 =
-      (ps.departurePathNode === undefined
-        ? "undefined_" + separateForwardBackwardTracks
-        : ps.departurePathNode.nodeShortName) +
-      "_" +
-      node2 +
-      "_" +
-      ps.index;
     if (node1 > node2) {
       const tmp = node1;
       node1 = node2;
       node2 = tmp;
-      const keyTmp = key1;
-      key1 = key2;
-      key2 = keyTmp;
     }
-    const sectionKey = key1 + "#" + key2;
+    const sectionKey = "@" + ps.index;
     return {key: sectionKey, node1: node1, node2: node2};
   }