Added isolations end markers

+Added isolation end markers rendering on the Isolations layer
*Renamed the “Isolations IDs” layer to “Isolations”

src/components/map/Map.css

@@ -32,6 +32,11 @@
     fill: #ffa;
 }
 
+.map svg path.isolation-end-marker {
+    stroke: #ffa;
+    stroke-width: 0.5px;
+}
+
 .map svg g.track-object circle {
     fill: #eee;
 }

src/components/map/object-renderers/IsolationIdRenderer.js

@@ -1,4 +1,6 @@
+import { useMemo } from "react";
 import SimpleLabelText from "../text/SimpleLabelText";
+import { TrackConnectionType } from "../../../model/track-connection";
 
 export default function IsolationIdRenderer(props) {
     const { object } = props;
@@ -6,16 +8,43 @@ export default function IsolationIdRenderer(props) {
     const [x, y] = pos.toSVGCoords();
     const text = object.id_isolation ?? '';
 
-    if (object.hide_isolation || !text) {
-        return null;
-    }
+    const showText = (!object.hide_isolation && !!text);
 
-    return <SimpleLabelText
-        text={text}
-        x={x}
-        y={y}
-        textProps={{  
-            className: "isolation-id"
-        }}
-    />
+    return (<>
+        {showText && <SimpleLabelText
+            text={text}
+            x={x}
+            y={y}
+            textProps={{  
+                className: "isolation-id"
+            }}
+        />}
+        <IsolationEndMarker object={object} isStart={true} />
+        <IsolationEndMarker object={object} />
+    </>);
+}
+
+function IsolationEndMarker(props) {
+    const { object, isStart = false } = props;
+
+    const isShown = useMemo(() => {
+        return object.connections.some(conn =>
+            (isStart ? conn.type === TrackConnectionType.START : conn.type === TrackConnectionType.END) &&
+            conn.otherTrack.id_isolation !== object.id_isolation
+        );
+    }, [object, isStart]);
+
+    if (!isShown) return null;
+
+    const pos = isStart ? object.points.start : object.points.end;
+    const [x, y] = pos.toSVGCoords();
+    const angle = isStart ? object.getStartAngleXZ() : object.getEndAngleXZ();
+
+    const cos = Math.cos(angle);
+    const sin = Math.sin(angle);
+
+    return <path
+        className="isolation-end-marker"
+        d={`M ${x - 1.5 * cos} ${y - 1.5 * sin} L ${x + 1.5 * cos} ${y + 1.5 * sin}`}
+    />          
 }

src/helpers/constants.js

@@ -76,6 +76,7 @@ const Constants = {
         {
             id: 'isolations-ids',
             name: 'Isolations IDs',
+            name: 'Isolations',
             default: false,
         },
         {