Create IsolationId class, split IsolationEndRenderer and IsolationIdRenderer

src/components/map/ObjectsRenderQueue.js

@@ -10,6 +10,7 @@ import NEVPRenderer from './object-renderers/NEVPRenderer';
 import DerailerRenderer from './object-renderers/DerailerRenderer';
 import ElectrificationStatusPopup from './additional-layer-components/ElectrificationStatusPopup';
 import SpawnPointRenderer from './object-renderers/SpawnPointRenderer';
+import IsolationEndRenderer from "./object-renderers/IsolationEndRenderer";
 
 const ObjectRendererQueue = [
     {
@@ -23,8 +24,14 @@ const ObjectRendererQueue = [
         'pointerEvents': true
     },
     {
-        'name': 'isolations-ids',
+        'name': 'isolations-ends',
         'category': 'tracks',
+        'renderer': IsolationEndRenderer,
+        'cond': (layers) => layers['isolations-ids']
+    },
+    {
+        'name': 'isolations-ids',
+        'category': 'isolation-ids',
         'renderer': IsolationIdRenderer,
         'cond': (layers) => layers['isolations-ids']
     },

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

@@ -0,0 +1,40 @@
+import { useMemo } from "react";
+import { TrackConnectionEnd } from "../../../model/track-connection";
+
+export default function IsolationEndRenderer(props) {
+    const { object } = props;
+    return (<>
+        <IsolationEndMarker object={object} end={TrackConnectionEnd.START} />
+        <IsolationEndMarker object={object} end={TrackConnectionEnd.END} />
+    </>);
+}
+
+function IsolationEndMarker(props) {
+    const { object, end = false } = props;
+
+    const isShown = useMemo(() => {
+        return object.connections.some((conn) => {
+            const isCorrectEnd = conn.end === end;
+            const isolationIdChanged = conn.otherTrack.id_isolation !== object.id_isolation;
+
+            // Prevent the marker from showing twice for both tracks
+            const isPreferred = object.id < conn.otherTrackId;
+
+            return isCorrectEnd && isolationIdChanged && isPreferred;
+        });
+    }, [object, end]);
+
+    if (!isShown) return null;
+
+    const pos = object.getEndPos(end);
+    const [x, y] = pos.toSVGCoords();
+    const angle = object.getAngleXZForEnd(end);
+
+    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/components/map/object-renderers/IsolationIdRenderer.js

@@ -1,55 +1,17 @@
-import { useMemo } from "react";
 import SimpleLabelText from "../text/SimpleLabelText";
-import { TrackConnectionEnd } from "../../../model/track-connection";
 
 export default function IsolationIdRenderer(props) {
     const { object } = props;
-    const pos = object.points.start.lerp(object.points.end, 0.5);
-    const [x, y] = pos.toSVGCoords();
+    const [x, y] = object.pos.toSVGCoords();
     const text = object.id_isolation ?? '';
+    if (!text) return null;
 
-    const showText = (!object.hide_isolation && !!text);
-
-    return (<>
-        {showText && <SimpleLabelText
-            text={text}
-            x={x}
-            y={y}
-            textProps={{
-                className: "isolation-id"
-            }}
-        />}
-        <IsolationEndMarker object={object} end={TrackConnectionEnd.START} />
-        <IsolationEndMarker object={object} end={TrackConnectionEnd.END} />
-    </>);
-}
-
-function IsolationEndMarker(props) {
-    const { object, end = false } = props;
-
-    const isShown = useMemo(() => {
-        return object.connections.some((conn) => {
-            const isCorrectEnd = conn.end === end;
-            const isolationIdChanged = conn.otherTrack.id_isolation !== object.id_isolation;
-
-            // Prevent the marker from showing twice for both tracks
-            const isPreferred = object.id < conn.otherTrackId;
-
-            return isCorrectEnd && isolationIdChanged && isPreferred;
-        });
-    }, [object, end]);
-
-    if (!isShown) return null;
-
-    const pos = object.getEndPos(end);
-    const [x, y] = pos.toSVGCoords();
-    const angle = object.getAngleXZForEnd(end);
-
-    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}`}
-    />
+    return (<SimpleLabelText
+        text={text}
+        x={x}
+        y={y}
+        textProps={{
+            className: "isolation-id"
+        }}
+    />);
 }

src/model/isolation-id.js

@@ -0,0 +1,15 @@
+import SceneryObject from "./scenery-object";
+import Vector3 from "./vector3";
+
+export default class IsolationId extends SceneryObject {
+    category = "isolation-ids";
+    type = "IsolationId";
+    id_isolation;
+
+    constructor(object_type, object_id, pos, id_isolation) {
+        super(`${object_type}:${object_id}`, pos, Vector3.zero());
+        Object.assign(this, {
+            id_isolation,
+        });
+    }
+}

src/model/switch-descriptions/switch-prefab.js

@@ -5,10 +5,12 @@ import {TrackConnectionEnd} from "../track-connection";
 
 export default class SwitchPrefab {
     tracks = {};
+    isolation_id_offset;
 
-    constructor(tracks) {
+    constructor(tracks, isolation_id_offset) {
         Object.assign(this, {
             tracks,
+            isolation_id_offset,
         });
         this._verifyConnections();
     }
@@ -89,7 +91,10 @@ export default class SwitchPrefab {
             ),
         };
 
-        return new SwitchPrefab(tracks);
+        const midpointA = this._calculateCurveEnd(Vector3.zero(), 0, radiusA, curveLength / 2).endPos;
+        const midpointB = this._calculateCurveEnd(Vector3.zero(), 0, radiusB, curveLength / 2).endPos;
+        const isolationIdOffset = midpointA.lerp(midpointB, 0.5);
+        return new SwitchPrefab(tracks, isolationIdOffset);
     }
 
     static _calculateCurveEnd(startPos, startAngle, radius, curveLength) {
@@ -215,7 +220,7 @@ export default class SwitchPrefab {
             ),
         };
 
-        return new SwitchPrefab(tracks);
+        return new SwitchPrefab(tracks, Vector3.zero());
     }
 
     static slip(totalLength, outerLength, transitionLength, radius, tangentInv, leftSlipEnabled, rightSlipEnabled) {
@@ -457,6 +462,6 @@ export default class SwitchPrefab {
         addSideConnection('left', 'a', 'b', leftSlipEnabled);
         addSideConnection('right', 'b', 'a', rightSlipEnabled);
 
-        return new SwitchPrefab(tracks);
+        return new SwitchPrefab(tracks, Vector3.zero());
     }
 }

src/model/switch.js

@@ -5,6 +5,7 @@ import Vector3 from "./vector3.js";
 import DefinedSwitches from "./defs/defined-switches.js";
 import {SwitchTrackConnectionType} from "./switch-descriptions/switch-prefab-track";
 import TrackConnection, {TrackConnectionEnd} from "./track-connection";
+import IsolationId from "./isolation-id";
 
 export default class Switch extends SceneryObject {
     model;
@@ -84,6 +85,11 @@ export default class Switch extends SceneryObject {
 
         this.tracks = tracks;
         this.def = def;
+
+        const rotRad = this.rot.multiply(Math.PI / 180);
+        const isolationIdPos = this.pos.add(def.isolation_id_offset.rotate(rotRad));
+        super.applyObject(scenery);
+        scenery.addObject(new IsolationId(this.category, this.id, isolationIdPos, this.id_isolation));
     }
 
     _getTrackIds() {

src/model/tracks/bezier-track.js

@@ -1,6 +1,7 @@
 import Track from "./track";
 import Vector3 from "../vector3";
 import TrackConnection, {TrackConnectionEnd} from "../track-connection";
+import IsolationId from "../isolation-id";
 
 export default class BezierTrack extends Track
 {
@@ -9,7 +10,8 @@ export default class BezierTrack extends Track
         start: Vector3.zero(),
         control1: Vector3.zero(),
         end: Vector3.zero(),
-        control2: Vector3.zero()
+        control2: Vector3.zero(),
+        middle: Vector3.zero(),
     };
 
     constructor(id, start, control1, end, control2, rot, len, r, connections, id_station, start_slope, end_slope, id_isolation, prefab_name, maxspeed, derailspeed) {
@@ -19,8 +21,21 @@ export default class BezierTrack extends Track
             start,
             control1: start.add(control1),
             end,
-            control2: end.add(control2)
+            control2: end.add(control2),
         });
+        // This is not the the actual middle point, but it's close enough
+        this.points.middle = this._pointAtT(0.5);
+    }
+
+    _pointAtT(t) {
+        const a1 = this.points.start.lerp(this.points.control1, t);
+        const a2 = this.points.control1.lerp(this.points.control2, t);
+        const a3 = this.points.control2.lerp(this.points.end, t);
+
+        const b1 = a1.lerp(a2, t);
+        const b2 = a2.lerp(a3, t);
+
+        return b1.lerp(b2, t);
     }
 
     getStartAngleXZ() {
@@ -59,4 +74,9 @@ export default class BezierTrack extends Track
 
         return track;
     }
+
+    applyObject(scenery) {
+        super.applyObject(scenery);
+        scenery.addObject(new IsolationId(this.category, this.id, this.points.middle, this.id_isolation));
+    }
 }

src/model/tracks/standard-track.js

@@ -2,6 +2,7 @@ import AngleHelper from "../../helpers/angleHelper";
 import Track from "./track";
 import Vector3 from "../vector3";
 import TrackConnection, {TrackConnectionEnd} from "../track-connection";
+import IsolationId from "../isolation-id";
 
 export default class StandardTrack extends Track
 {
@@ -9,7 +10,8 @@ export default class StandardTrack extends Track
     points = {
         start: Vector3.zero(),
         end: Vector3.zero(),
-        circleCenter: Vector3.zero()
+        circleCenter: Vector3.zero(),
+        middle: Vector3.zero(),
     };
 
     constructor(id, start, rot, len, r, connections, id_station, start_slope, end_slope, id_isolation, prefab_name, maxspeed, derailspeed) {
@@ -60,12 +62,18 @@ export default class StandardTrack extends Track
         const rotRad = AngleHelper.degToRad(this.rot.y);
 
         this.points.start = this.pos.clone();
-        this.points.end = this.pos.add(Vector3.fromAngleY(rotRad, this.len));
-        this.points.circleCenter = this.pos.clone(); // default circle center
 
-        if (this.r !== 0) {
+        if (this.r === 0) {
+            this.points.end = this.pos.add(Vector3.fromAngleY(rotRad, this.len));
+            this.points.middle = this.points.start.lerp(this.points.end, 0.5);
+            this.points.circleCenter = this.pos.clone(); // default circle center
+        } else {
             const centerAngle = rotRad + Math.PI / 2;
             this.points.circleCenter = this.pos.sub(Vector3.fromAngleY(centerAngle, this.r));
+
+            const middleAngle = centerAngle - (this.len / this.r) / 2;
+            this.points.middle = this.points.circleCenter.add(Vector3.fromAngleY(middleAngle, this.r));
+
             const endAngle = centerAngle - this.len / this.r;
             this.points.end = this.points.circleCenter.add(Vector3.fromAngleY(endAngle, this.r));
         }
@@ -78,4 +86,9 @@ export default class StandardTrack extends Track
             this.points.end.y += startHeightDiff + (endHeightDiff - startHeightDiff) / 2;
         }
     }
+
+    applyObject(scenery) {
+        super.applyObject(scenery);
+        scenery.addObject(new IsolationId(this.category, this.id, this.points.middle, this.id_isolation));
+    }
 }

src/model/tracks/track.js

@@ -15,7 +15,6 @@ export default class Track extends SceneryObject {
     start_slope;
     end_slope;
     prefab_name;
-    hide_isolation = false;
     switch = null;
     electrificationStatus = ElectrificationStatus.NOT_CHECKED;
     hasNEVP = false;