From 9a10c0b725ca27cf3f581cd33975fb46198b74b1 Mon Sep 17 00:00:00 2001
From: Frank Elsinga <frank@elsinga.de>
Date: Sat, 13 Jul 2024 18:06:22 +0200
Subject: [PATCH 1/3] implemented indoor display

---
 .../app/components/DetailsInteractiveMap.vue  |  239 +-
 webclient/app/composables/FloorControl.ts     |  170 -
 webclient/package.json                        |    1 +
 webclient/pnpm-lock.yaml                      |  143 +
 webclient/public/example.geojson              | 3690 +++++++++++++++++
 5 files changed, 3880 insertions(+), 363 deletions(-)
 delete mode 100644 webclient/app/composables/FloorControl.ts
 create mode 100644 webclient/public/example.geojson

diff --git a/webclient/app/components/DetailsInteractiveMap.vue b/webclient/app/components/DetailsInteractiveMap.vue
index 1be3c2b70..9bb5b6654 100644
--- a/webclient/app/components/DetailsInteractiveMap.vue
+++ b/webclient/app/components/DetailsInteractiveMap.vue
@@ -1,14 +1,15 @@
 <script setup lang="ts">
-import type { BackgroundLayerSpecification, Coordinates, ImageSource } from "maplibre-gl";
+// @ts-expect-error library does not provide proper types
+import { addIndoorTo, IndoorControl, IndoorMap } from "map-gl-indoor";
 import { AttributionControl, FullscreenControl, GeolocateControl, Map, Marker, NavigationControl } from "maplibre-gl";
-import { FloorControl } from "~/composables/FloorControl";
 import { webglSupport } from "~/composables/webglSupport";
+// @ts-expect-error library does not provide proper types
+import type { MaplibreMapWithIndoor } from "map-gl-indoor";
 import type { components } from "~/api_types";
 
 const props = defineProps<{ data: DetailsResponse }>();
-const map = ref<Map | undefined>(undefined);
+const map = ref<MaplibreMapWithIndoor | undefined>(undefined);
 const marker = ref<Marker | undefined>(undefined);
-const floorControl = ref<FloorControl>(new FloorControl());
 const { t } = useI18n({ useScope: "local" });
 const runtimeConfig = useRuntimeConfig();
 
@@ -16,29 +17,27 @@ const initialLoaded = ref(false);
 
 type DetailsResponse = components["schemas"]["DetailsResponse"];
 
-function loadInteractiveMap() {
+async function loadInteractiveMap() {
   if (!webglSupport) return;
 
-  const doMapUpdate = function () {
+  const doMapUpdate = async function () {
     // The map might or might not be initialized depending on the type
     // of navigation.
     if (document.getElementById("interactive-map")) {
       if (document.getElementById("interactive-map")?.classList.contains("maplibregl-map")) {
         marker.value?.remove();
       } else {
-        // @ts-expect-error recursive calls are not supported by ts
-        map.value = initMap("interactive-map");
+        map.value = await initMap("interactive-map");
 
         document.getElementById("interactive-map")?.classList.remove("loading");
       }
     }
+
+    // @ts-expect-error super weird typing error which TS can't resolve
     marker.value = new Marker({ element: createMarker() });
     const coords = props.data.coords;
-    if (map.value !== undefined) marker.value.setLngLat([coords.lon, coords.lat]).addTo(map.value as Map);
-
-    const overlays = props.data.maps?.overlays;
-    if (overlays) floorControl.value.updateFloors(overlays);
-    else floorControl.value.resetFloors();
+    if (map.value !== undefined)
+      marker.value.setLngLat([coords.lon, coords.lat]).addTo(map.value as MaplibreMapWithIndoor);
 
     const defaultZooms: { [index: string]: number | undefined } = {
       building: 17,
@@ -46,7 +45,7 @@ function loadInteractiveMap() {
     };
 
     map.value?.flyTo({
-      center: [coords.lon, coords.lat],
+      center: [8.3909479, 49.0332499],
       zoom: defaultZooms[props.data.type || "undefined"] || 16,
       speed: 1,
       maxDuration: 2000,
@@ -54,11 +53,11 @@ function loadInteractiveMap() {
   };
 
   // The map element should be visible when initializing
-  if (!document.querySelector("#interactive-map .maplibregl-canvas")) nextTick(doMapUpdate);
-  else doMapUpdate();
+  if (!document.querySelector("#interactive-map .maplibregl-canvas")) await nextTick(doMapUpdate);
+  else await doMapUpdate();
 }
 
-function createMarker(hueRotation = 0) {
+function createMarker(hueRotation = 0): HTMLDivElement {
   const markerDiv = document.createElement("div");
   const markerIcon = document.createElement("span");
   markerIcon.style.filter = `hue-rotate(${hueRotation}deg)`;
@@ -72,7 +71,7 @@ function createMarker(hueRotation = 0) {
   return markerDiv;
 }
 
-function initMap(containerId: string) {
+async function initMap(containerId: string) {
   const map = new Map({
     container: containerId,
 
@@ -93,7 +92,7 @@ function initMap(containerId: string) {
     zoom: 11, // Zoomed out so that the whole city is visible
 
     attributionControl: false,
-  });
+  }) as MaplibreMapWithIndoor;
 
   map.addControl(new NavigationControl({}), "top-left");
 
@@ -164,104 +163,17 @@ function initMap(containerId: string) {
     map.addControl(attrib);
     attrib._toggleAttribution();
   });
+  addIndoorTo(map);
 
-  interface FloorChangedEvent {
-    file: string | null;
-    coords: Coordinates | undefined;
-  }
+  // Retrieve the geojson from the path and add the map
+  const geojson = await (await fetch("/example.geojson")).json();
+  await map.indoor.addMap(IndoorMap.fromGeojson(geojson));
 
-  floorControl.value.on("floor-changed", (args: FloorChangedEvent) => {
-    const url = args.file ? `${runtimeConfig.public.cdnURL}/cdn/maps/overlay/${args.file}` : null;
-    setOverlayImage(url, args.coords);
-  });
-  map.addControl(floorControl.value, "bottom-left");
+  // Add the specific control
+  map.addControl(new IndoorControl(), "bottom-left");
 
   return map;
 }
-
-// Set the currently visible overlay image in the map,
-// or hide it if imgUrl is null.
-function setOverlayImage(imgUrl: string | null, coords: Coordinates | undefined) {
-  // Even if the map is initialized, it could be that
-  // it hasn't loaded yet, so we need to postpone adding
-  // the overlay layer.
-  // However, the official `loaded()` function is a problem
-  // here, because the map is shortly in a "loading" state
-  // when source / style is changed, even though the initial
-  // loading is complete (and only the initial loading seems
-  // to be required to do changes here)
-  if (!initialLoaded.value) {
-    map.value?.on("load", () => setOverlayImage(imgUrl, coords));
-    return;
-  }
-
-  if (imgUrl === null) {
-    // Hide overlay
-    if (map.value?.getLayer("overlay-layer")) map.value?.setLayoutProperty("overlay-layer", "visibility", "none");
-    if (map.value?.getLayer("overlay-bg")) map.value?.setLayoutProperty("overlay-bg", "visibility", "none");
-  } else {
-    const source = map.value?.getSource("overlay-src") as ImageSource | undefined;
-    if (source === undefined) {
-      if (coords !== undefined)
-        map.value?.addSource("overlay-src", {
-          type: "image",
-          url: imgUrl,
-          coordinates: coords,
-        });
-    } else
-      source.updateImage({
-        url: imgUrl,
-        coordinates: coords,
-      });
-
-    const layer = map.value?.getLayer("overlay-layer") as BackgroundLayerSpecification | undefined;
-    if (!layer) {
-      map.value?.addLayer({
-        id: "overlay-bg",
-        type: "background",
-        paint: {
-          "background-color": "#ffffff",
-          "background-opacity": 0.6,
-        },
-      });
-      map.value?.addLayer({
-        id: "overlay-layer",
-        type: "raster",
-        source: "overlay-src",
-        paint: {
-          "raster-fade-duration": 0,
-        },
-      });
-    } else {
-      map.value?.setLayoutProperty("overlay-layer", "visibility", "visible");
-      map.value?.setLayoutProperty("overlay-bg", "visibility", "visible");
-    }
-  }
-}
-
-// --- Loading components ---
-onMounted(() => {
-  nextTick(() => {
-    // Even though 'mounted' is called there is no guarantee apparently,
-    // that we can reference the map by ID in the DOM yet. For this reason we
-    // try to poll now (Not the best solution probably)
-    let timeoutInMs = 25;
-
-    function pollMap() {
-      const canLoadMap = document.getElementById("interactive-map") !== null;
-      if (canLoadMap) {
-        loadInteractiveMap();
-        window.scrollTo({ top: 0, behavior: "auto" });
-      } else {
-        console.info(`'mounted' called, but page is not mounted yet. Retrying map-load in ${timeoutInMs}ms`);
-        setTimeout(pollMap, timeoutInMs);
-        timeoutInMs *= 1.5;
-      }
-    }
-
-    pollMap();
-  });
-});
 </script>
 
 <template>
@@ -346,90 +258,31 @@ onMounted(() => {
   }
 }
 
-.maplibregl-ctrl-group.floor-ctrl {
-  max-width: 100%;
-  display: none;
-  overflow: hidden;
-
-  &.visible {
-    display: block;
-  }
-
-  &.closed #floor-list {
-    display: none !important;
-  }
-
-  & button {
-    &.active {
-      background: #ececec;
-    }
-
-    & .arrow {
-      font-weight: normal;
-      font-size: 0.3rem;
-      line-height: 0.9rem;
-      vertical-align: top;
-    }
-  }
-
-  &.reduced > .vertical-oc,
-  &.reduced > .horizontal-oc {
-    display: none !important;
-  }
-
-  & > .vertical-oc,
-  & > .horizontal-oc {
-    font-weight: bold;
-    background: #ececec;
-  }
-
-  &.closed {
-    & > .vertical-oc,
-    & > .horizontal-oc {
-      background: #fff;
-    }
-
-    &:hover > .vertical-oc,
-    &:hover > .horizontal-oc {
-      background: #f2f2f2;
+/* mapboxgl is intentional due to map-gl-indoor */
+.maplibregl-ctrl-bottom-left .mapboxgl-ctrl {
+  margin-left: 10px;
+  margin-bottom: 10px;
+  pointer-events: auto;
+
+  &.mapboxgl-ctrl-group {
+    background: #fff;
+    border-radius: 4px;
+
+    button {
+      background-color: transparent;
+      border: 0;
+      box-sizing: border-box;
+      cursor: pointer;
+      display: block;
+      height: 29px;
+      outline: none;
+      padding: 0;
+      width: 29px;
     }
   }
 
-  /* vertical is default layout */
-
-  & > .horizontal-oc {
-    display: none;
-  }
-
-  &.horizontal {
-    & > .horizontal-oc {
-      display: inline-block;
-    }
-
-    & > .vertical-oc {
-      display: none;
-    }
-
-    & #floor-list {
-      display: inline-block;
-      width: calc(100% - 29px);
-    }
-
-    & button {
-      display: inline-block;
-      border-top: 0;
-      border-left: 1px solid #ddd;
-
-      &.arrow {
-        font-size: 0.4rem;
-        vertical-align: bottom;
-        line-height: 1.1rem;
-      }
-
-      & + button {
-        border-top: 0;
-      }
-    }
+  .maplibregl-ctrl-group:not(:empty) {
+    box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.1);
   }
 }
 </style>
diff --git a/webclient/app/composables/FloorControl.ts b/webclient/app/composables/FloorControl.ts
deleted file mode 100644
index f6c9c00a1..000000000
--- a/webclient/app/composables/FloorControl.ts
+++ /dev/null
@@ -1,170 +0,0 @@
-import type { IControl, Map } from "maplibre-gl";
-import { Evented } from "maplibre-gl";
-import type { components } from "~/api_types";
-
-type OverlayMapEntry = components["schemas"]["OverlayMapEntry"];
-type OverlayMap = {
-  readonly default: number | null;
-  readonly available: readonly OverlayMapEntry[];
-};
-
-// In reality, this extends maplibregl.Control, but this is apparently not working
-export class FloorControl extends Evented implements IControl {
-  private readonly container: HTMLDivElement;
-  private readonly floor_list: HTMLDivElement;
-  private resize_observer: ResizeObserver | undefined;
-  private map: Map | undefined;
-
-  constructor() {
-    super();
-
-    this.container = document.createElement("div");
-    this.container.classList.add("maplibregl-ctrl-group");
-    this.container.classList.add("maplibregl-ctrl");
-    this.container.classList.add("floor-ctrl");
-
-    // vertical open/collapse button
-    const verticalOpenClose = document.createElement("button");
-    verticalOpenClose.classList.add("vertical-oc");
-    verticalOpenClose.innerHTML = `<span id="vertical-oc-text" /><span class="arrow">▲</span>`;
-    verticalOpenClose.addEventListener("click", () => this.container.classList.toggle("closed"));
-    // horizontal (primarily on mobile)
-    const horizontalOpenClose = document.createElement("button");
-    horizontalOpenClose.classList.add("horizontal-oc");
-    horizontalOpenClose.innerHTML = `<span id="horizontal-oc-text" /><span class="arrow">❯</span>`;
-    horizontalOpenClose.addEventListener("click", () => {
-      this.container.classList.toggle("closed");
-    });
-
-    this.floor_list = document.createElement("div");
-    this.floor_list.id = "floor-list";
-
-    this.container.appendChild(horizontalOpenClose);
-    this.container.appendChild(this.floor_list);
-    this.container.appendChild(verticalOpenClose);
-  }
-
-  onAdd(map: Map): HTMLDivElement {
-    this.map = map;
-
-    // To change on `fullscreen` click on mobile, we need to
-    // observe window size changed
-    if (ResizeObserver) {
-      this.resize_observer = new ResizeObserver(() => {
-        this._recalculateLayout(this.floor_list.children.length);
-      });
-      const interactiveMap = document.getElementById("interactive-map");
-      if (interactiveMap) this.resize_observer.observe(interactiveMap);
-    }
-    return this.container;
-  }
-
-  onRemove(): void {
-    this.container.remove();
-    this.map = undefined;
-  }
-
-  public resetFloors(): void {
-    this.container.classList.remove("visible");
-    this.fire("floor-changed", { file: null, coords: undefined });
-  }
-
-  public updateFloors(overlays: OverlayMap): void {
-    // `floors` is null or a list of floors with data,
-    // `visibleId` is the id of the visible floor.
-    this.floor_list.innerHTML = "";
-
-    const clickHandlerBuilder = (allFloors: readonly OverlayMapEntry[] | null, i: number) => {
-      // Because JS
-      return () => {
-        if (allFloors) {
-          // floorlist is reversed, so we need to reverse the index
-          const indexInFloorList = allFloors.length - i - 1;
-          this._setActiveFloor(indexInFloorList, allFloors[i]?.floor ?? "EG");
-          this.fire("floor-changed", {
-            file: allFloors[i]?.file,
-            coords: allFloors[i]?.coordinates,
-          });
-        } else {
-          this._setActiveFloor(i, "∅");
-          this.fire("floor-changed", { file: null, coords: undefined });
-        }
-
-        if (!this.container.classList.contains("reduced")) this.container.classList.add("closed");
-      };
-    };
-    let btn;
-    let visibleI = null;
-    [...overlays.available].reverse().forEach((floor: OverlayMapEntry, reversed_index: number) => {
-      const index = overlays.available.length - reversed_index - 1;
-      btn = document.createElement("button");
-      btn.innerText = floor.floor;
-      btn.addEventListener("click", clickHandlerBuilder(overlays.available, index));
-      this.floor_list.appendChild(btn);
-
-      if (floor.id === overlays.default) visibleI = index;
-    });
-
-    if (visibleI === null) {
-      this._setActiveFloor(this.floor_list.children.length, "∅");
-      this.fire("floor-changed", { file: null, coords: undefined });
-    } else {
-      this._setActiveFloor(visibleI, overlays.available[visibleI]?.floor ?? "EG");
-      this.fire("floor-changed", {
-        file: overlays.available[visibleI]?.file,
-        coords: overlays.available[visibleI]?.coordinates,
-      });
-    }
-
-    // The last button hides all overlays
-    btn = document.createElement("button");
-    btn.innerText = "∅";
-    btn.addEventListener("click", clickHandlerBuilder(null, this.floor_list.children.length));
-    this.floor_list.appendChild(btn);
-
-    this._recalculateLayout(this.floor_list.children.length);
-
-    this.container.classList.add("visible");
-  }
-
-  // Recalculate the layout for displaying n floor buttons
-  private _recalculateLayout(n: number): void {
-    // Calculate required and available size to choose between
-    // vertical (default) or horizontal layout
-    const mapHeight = document.getElementById("interactive-map")?.clientHeight || 0;
-    const topCtrlHeight = document.querySelector(".maplibregl-ctrl-top-left")?.clientHeight || 0;
-    const bottomCtrlHeight = document.querySelector(".maplibregl-ctrl-bottom-left")?.clientHeight || 0;
-    const floorCtrlHeight = document.querySelector(".floor-ctrl")?.clientHeight || 0;
-
-    // The buttons have a height of 29px
-    const availableHeight = mapHeight - topCtrlHeight - bottomCtrlHeight + floorCtrlHeight;
-    const requiredHeight = 29 * n;
-
-    // 3 or fewer buttons can always be displayed in reduced layout.
-    // Also, if the control takes only a small amount of space, it is always open.
-    if (n <= 3 || requiredHeight < availableHeight * 0.2) {
-      this.container.classList.remove("closed"); // reduced can never be closed
-      this.container.classList.remove("horizontal");
-      this.container.classList.add("reduced");
-    } else {
-      this.container.classList.remove("reduced");
-      this.container.classList.add("closed");
-
-      // 25px = 10px reserved for top/bottom margin + 5px between control groups
-      // 29px = additional height from the open/collapse button
-      if (availableHeight - (requiredHeight + 29) > 25) this.container.classList.remove("horizontal");
-      else this.container.classList.add("horizontal");
-    }
-  }
-
-  private _setActiveFloor(floorListI: number, name: string): void {
-    for (let i = 0; i < this.floor_list.children.length; i++) {
-      if (i === floorListI) this.floor_list.children[i]?.classList.add("active");
-      else this.floor_list.children[i]?.classList.remove("active");
-    }
-    const vertical = document.getElementById("vertical-oc-text") as HTMLSpanElement;
-    vertical.innerText = name;
-    const horizontal = document.getElementById("horizontal-oc-text") as HTMLSpanElement;
-    horizontal.innerText = name;
-  }
-}
diff --git a/webclient/package.json b/webclient/package.json
index f46fb8cf4..a556edd46 100644
--- a/webclient/package.json
+++ b/webclient/package.json
@@ -26,6 +26,7 @@
     "@vueuse/core": "10.11.0",
     "@vueuse/nuxt": "10.11.0",
     "@vueuse/router": "^10.11.0",
+    "map-gl-indoor": "0.5.0",
     "maplibre-gl": "4.5.0",
     "nightwind": "1.1.13",
     "nuxt": "3.12.4",
diff --git a/webclient/pnpm-lock.yaml b/webclient/pnpm-lock.yaml
index 70b7b0bd1..82d863622 100644
--- a/webclient/pnpm-lock.yaml
+++ b/webclient/pnpm-lock.yaml
@@ -47,6 +47,9 @@ importers:
       '@vueuse/router':
         specifier: ^10.11.0
         version: 10.11.0(vue-router@4.4.0(vue@3.4.34(typescript@5.5.4)))(vue@3.4.34(typescript@5.5.4))
+      map-gl-indoor:
+        specifier: 0.5.0
+        version: 0.5.0(mapbox-gl@3.5.1)
       maplibre-gl:
         specifier: 4.5.0
         version: 4.5.0
@@ -1084,6 +1087,9 @@ packages:
     resolution: {integrity: sha512-rY0o9A5ECsTQRVhv7tL/OyDpGAoUB4tTvLiW1DSzQGq4bvTPhNw1VpSNjDJc5GFZ2XuyOtSWSVN05qOtcD71qQ==}
     engines: {node: '>= 0.6'}
 
+  '@mapbox/mapbox-gl-supported@3.0.0':
+    resolution: {integrity: sha512-2XghOwu16ZwPJLOFVuIOaLbN0iKMn867evzXFyf0P22dqugezfJwLmdanAgU25ITvz1TvOfVP4jsDImlDJzcWg==}
+
   '@mapbox/node-pre-gyp@1.0.11':
     resolution: {integrity: sha512-Yhlar6v9WQgUp/He7BdgzOz8lqMQ8sU+jkCq7Wx8Myc5YFJLbEe7lgui/V7G1qB1DJykHSGwreceSaD60Y0PUQ==}
     hasBin: true
@@ -1810,6 +1816,24 @@ packages:
     resolution: {integrity: sha512-L7z9BgrNEcYyUYtF+HaEfiS5ebkh9jXqbszz7pC0hRBPaatV0XjSD3+eHrpqFemQfgwiFF0QPIarnIihIDn7OA==}
     engines: {node: '>=10.13.0'}
 
+  '@turf/bbox@6.5.0':
+    resolution: {integrity: sha512-RBbLaao5hXTYyyg577iuMtDB8ehxMlUqHEJiMs8jT1GHkFhr6sYre3lmLsPeYEi/ZKj5TP5tt7fkzNdJ4GIVyw==}
+
+  '@turf/destination@6.5.0':
+    resolution: {integrity: sha512-4cnWQlNC8d1tItOz9B4pmJdWpXqS0vEvv65bI/Pj/genJnsL7evI0/Xw42RvEGROS481MPiU80xzvwxEvhQiMQ==}
+
+  '@turf/distance@6.5.0':
+    resolution: {integrity: sha512-xzykSLfoURec5qvQJcfifw/1mJa+5UwByZZ5TZ8iaqjGYN0vomhV9aiSLeYdUGtYRESZ+DYC/OzY+4RclZYgMg==}
+
+  '@turf/helpers@6.5.0':
+    resolution: {integrity: sha512-VbI1dV5bLFzohYYdgqwikdMVpe7pJ9X3E+dlr425wa2/sMJqYDhTO++ec38/pcPvPE6oD9WEEeU3Xu3gza+VPw==}
+
+  '@turf/invariant@6.5.0':
+    resolution: {integrity: sha512-Wv8PRNCtPD31UVbdJE/KVAWKe7l6US+lJItRR/HOEW3eh+U/JwRCSUl/KZ7bmjM/C+zLNoreM2TU6OoLACs4eg==}
+
+  '@turf/meta@6.5.0':
+    resolution: {integrity: sha512-RrArvtsV0vdsCBegoBtOalgdSOfkBrTJ07VkpiCnq/491W67hnMWmDu7e6Ztw0C3WldRYTXkg3SumfdzZxLBHA==}
+
   '@types/debug@4.1.12':
     resolution: {integrity: sha512-vIChWdVG3LG1SMxEvI/AK+FWJthlrqlTu7fbrlywTkkaONwk/UAGaULXRlf8vkzFBLVm0zkMdCquhL5aOjhXPQ==}
 
@@ -2471,6 +2495,9 @@ packages:
   character-reference-invalid@2.0.1:
     resolution: {integrity: sha512-iBZ4F4wRbyORVsu0jPV7gXkOsGYjGHPmAyv+HiHG8gi5PtC9KI2j1+v8/tlibRvjoWX027ypmG/n0HtO5t7unw==}
 
+  cheap-ruler@4.0.0:
+    resolution: {integrity: sha512-0BJa8f4t141BYKQyn9NSQt1PguFQXMXwZiA5shfoaBYHAb2fFk2RAX+tiWMoQU+Agtzt3mdt0JtuyshAXqZ+Vw==}
+
   chokidar@3.6.0:
     resolution: {integrity: sha512-7VT13fmjotKpGipCW9JEQAusEPE+Ei8nl6/g4FBAmIm0GOOLMua9NDDo/DWp0ZAxCr3cPq5ZpBqmPAQgDda2Pw==}
     engines: {node: '>= 8.10.0'}
@@ -2701,6 +2728,9 @@ packages:
   css.escape@1.5.1:
     resolution: {integrity: sha512-YUifsXXuknHlUsmlgyY0PKzgPOr7/FjCePfHNt0jxm83wHZi44VDMQ7/fGNkjY3/jV1MC+1CmZbaHzugyeRtpg==}
 
+  csscolorparser@1.0.3:
+    resolution: {integrity: sha512-umPSgYwZkdFoUrH5hIq5kf0wPSXiro51nPw0j2K/c83KflkPSTBGMz6NJvMB+07VlL0y7VPo6QJcDjcgKTTm3w==}
+
   cssesc@3.0.0:
     resolution: {integrity: sha512-/Tb/JcjK111nNScGob5MNtsntNM1aCNUDipB/TkwZFhyDrrE47SOx/18wF2bbjgc3ZzCSKW1T5nt5EbFoAz/Vg==}
     engines: {node: '>=4'}
@@ -2920,6 +2950,9 @@ packages:
   earcut@2.2.4:
     resolution: {integrity: sha512-/pjZsA1b4RPHbeWZQn66SWS8nZZWLQQ23oE3Eam7aroEFGEvwKAsJfZ9ytiEMycfzXWpca4FA9QIOehf7PocBQ==}
 
+  earcut@3.0.0:
+    resolution: {integrity: sha512-41Fs7Q/PLq1SDbqjsgcY7GA42T0jvaCNGXgGtsNdvg+Yv8eIu06bxv4/PoREkZ9nMDNwnUSG9OFB9+yv8eKhDg==}
+
   eastasianwidth@0.2.0:
     resolution: {integrity: sha512-I88TYZWc9XiYHRQ4/3c5rjjfgkjhLyW2luGIheGERbNQ6OY7yTybanSpDXZa8y7VUP9YmDcYa+eyq4ca7iLqWA==}
 
@@ -3198,6 +3231,9 @@ packages:
   fault@1.0.4:
     resolution: {integrity: sha512-CJ0HCB5tL5fYTEA7ToAq5+kTwd++Borf1/bifxd9iT70QcXr4MRrO3Llf8Ifs70q+SJcGHFtnIE/Nw6giCtECA==}
 
+  fflate@0.8.2:
+    resolution: {integrity: sha512-cPJU47OaAoCbg0pBvzsgpTPhmhqI5eJjh/JIu8tPj5q+T7iLvW/JAYUqmE7KOB4R1ZyEhzBaIQpQpardBF5z8A==}
+
   file-entry-cache@8.0.0:
     resolution: {integrity: sha512-XXTUwCvisa5oacNGRP9SfNtYBNAMi+RPwBFmblZEF7N7swHYQS6/Zfk7SRwx4D5j3CH211YNRco1DEMNVfZCnQ==}
     engines: {node: '>=16.0.0'}
@@ -3423,6 +3459,9 @@ packages:
   graphemer@1.4.0:
     resolution: {integrity: sha512-EtKwoO6kxCL9WO5xipiHTZlSzBm7WLT627TqC/uVRd0HKmq8NXyebnNYxDoBi7wt8eTWrUrKXCOVaFq9x1kgag==}
 
+  grid-index@1.1.0:
+    resolution: {integrity: sha512-HZRwumpOGUrHyxO5bqKZL0B0GlUpwtCAzZ42sgxUPniu33R1LSFH5yrIcBCHjkctCAh3mtWKcKd9J4vDDdeVHA==}
+
   gzip-size@7.0.0:
     resolution: {integrity: sha512-O1Ld7Dr+nqPnmGpdhzLmMTQ4vAsD+rHwMm1NLUmoUFFymBOMKxCCrtDxqdBRYXdeEPEi3SyoR4TizJLQrnKBNA==}
     engines: {node: ^12.20.0 || ^14.13.1 || >=16.0.0}
@@ -3944,6 +3983,9 @@ packages:
   lodash.camelcase@4.3.0:
     resolution: {integrity: sha512-TwuEnCnxbc3rAvhf/LbG7tJUDzhqXyFnv3dtzLOPgCG/hODL7WFnsbwktkD7yUV0RrreP/l1PALq/YSg6VvjlA==}
 
+  lodash.clonedeep@4.5.0:
+    resolution: {integrity: sha512-H5ZhCF25riFd9uB5UCkVKo61m3S/xZk1x4wA6yp/L3RFP6Z/eHH1ymQcGLo7J3GMPfm0V/7m1tryHuGVxpqEBQ==}
+
   lodash.debounce@4.0.8:
     resolution: {integrity: sha512-FT1yDzDYEoYWhnSGnpE/4Kj1fLZkDFyqRb7fNt6FdYOSxlUWAtp42Eh6Wb0rGIv/m9Bgo7x4GhQbm5Ys4SG5ow==}
 
@@ -4003,6 +4045,14 @@ packages:
     resolution: {integrity: sha512-g3FeP20LNwhALb/6Cz6Dd4F2ngze0jz7tbzrD2wAV+o9FeNHe4rL+yK2md0J/fiSf1sa1ADhXqi5+oVwOM/eGw==}
     engines: {node: '>=8'}
 
+  map-gl-indoor@0.5.0:
+    resolution: {integrity: sha512-v3tsA6yVzTOMfyBLsXPOG6pKqzk7SRo6QFZjMJS1EIYsfQtkAZbB5i20CPv3xWqVSbXJKUNJdF+3xDLlouEXfw==}
+    peerDependencies:
+      mapbox-gl: '>1.10.0'
+
+  mapbox-gl@3.5.1:
+    resolution: {integrity: sha512-sf4N18vl5FHS8lPRWZjTZShgIziDqSxan3MazHClvYYXezsAPn6hApRvAS2HEMTq7MXzRcvvt4sYgQWLubwnBw==}
+
   maplibre-gl@4.5.0:
     resolution: {integrity: sha512-qOS1hn4d/pn2i0uva4S5Oz+fACzTkgBKq+NpwT/Tqzi4MSyzcWNtDELzLUSgWqHfNIkGCl5CZ/w7dtis+t4RCw==}
     engines: {node: '>=16.14.0', npm: '>=8.1.0'}
@@ -5325,6 +5375,10 @@ packages:
   serialize-javascript@6.0.2:
     resolution: {integrity: sha512-Saa1xPByTTq2gdeFZYLLo+RFE35NHZkAbqZeWNd3BpzppeVisAqpDjcp8dyf6uIvEqJRd46jemmyA4iFIeVk8g==}
 
+  serialize-to-js@3.1.2:
+    resolution: {integrity: sha512-owllqNuDDEimQat7EPG0tH7JjO090xKNzUtYz6X+Sk2BXDnOCilDdNLwjWeFywG9xkJul1ULvtUQa9O4pUaY0w==}
+    engines: {node: '>=4.0.0'}
+
   serve-placeholder@2.0.2:
     resolution: {integrity: sha512-/TMG8SboeiQbZJWRlfTCqMs2DD3SZgWp0kDQePz9yUuCnDfDh/92gf7/PxGhzXTKBIPASIHxFcZndoNbp6QOLQ==}
 
@@ -5688,6 +5742,10 @@ packages:
   tiny-invariant@1.3.3:
     resolution: {integrity: sha512-+FbBPE1o9QAYvviau/qC5SE3caw21q3xkvWKBtja5vgqOWIHHJ3ioaq1VPfn/Szqctz2bU/oYeKd9/z5BL+PVg==}
 
+  tiny-lru@11.2.11:
+    resolution: {integrity: sha512-27BIW0dIWTYYoWNnqSmoNMKe5WIbkXsc0xaCQHd3/3xT2XMuMJrzHdrO9QBFR14emBz1Bu0dOAs2sCBBrvgPQA==}
+    engines: {node: '>=12'}
+
   tinyqueue@2.0.3:
     resolution: {integrity: sha512-ppJZNDuKGgxzkHihX8v9v9G5f+18gzaTfrukGrq6ueg0lmH4nqVnA2IPG0AEH3jKEk2GRJCUhDoqpoiw3PHLBA==}
 
@@ -5768,6 +5826,9 @@ packages:
   tunnel-agent@0.6.0:
     resolution: {integrity: sha512-McnNiV1l8RYeY8tBgEpuodCC1mLUdbSN+CYBL7kJsJNInOP8UjDDEwdk6Mw60vdLLrr5NHKZhMAOSrR2NZuQ+w==}
 
+  tweakpane@4.0.4:
+    resolution: {integrity: sha512-RkWD54zDlEbnN01wQPk0ANHGbdCvlJx/E8A1QxhTfCbX+ROWos1Ws2MnhOm39aUGMOh+36TjUwpDmLfmwTr1Fg==}
+
   type-check@0.4.0:
     resolution: {integrity: sha512-XleUoc9uwGXqjWwXaUTZAmzMcFZ5858QA2vvx1Ur5xIcixXIP+8LnFDgRplU30us6teqdlskFfu+ae4K79Ooew==}
     engines: {node: '>= 0.8.0'}
@@ -7138,6 +7199,8 @@ snapshots:
 
   '@mapbox/jsonlint-lines-primitives@2.0.2': {}
 
+  '@mapbox/mapbox-gl-supported@3.0.0': {}
+
   '@mapbox/node-pre-gyp@1.0.11(encoding@0.1.13)':
     dependencies:
       detect-libc: 2.0.3
@@ -8590,6 +8653,31 @@ snapshots:
 
   '@trysound/sax@0.2.0': {}
 
+  '@turf/bbox@6.5.0':
+    dependencies:
+      '@turf/helpers': 6.5.0
+      '@turf/meta': 6.5.0
+
+  '@turf/destination@6.5.0':
+    dependencies:
+      '@turf/helpers': 6.5.0
+      '@turf/invariant': 6.5.0
+
+  '@turf/distance@6.5.0':
+    dependencies:
+      '@turf/helpers': 6.5.0
+      '@turf/invariant': 6.5.0
+
+  '@turf/helpers@6.5.0': {}
+
+  '@turf/invariant@6.5.0':
+    dependencies:
+      '@turf/helpers': 6.5.0
+
+  '@turf/meta@6.5.0':
+    dependencies:
+      '@turf/helpers': 6.5.0
+
   '@types/debug@4.1.12':
     dependencies:
       '@types/ms': 0.7.34
@@ -9423,6 +9511,8 @@ snapshots:
 
   character-reference-invalid@2.0.1: {}
 
+  cheap-ruler@4.0.0: {}
+
   chokidar@3.6.0:
     dependencies:
       anymatch: 3.1.3
@@ -9622,6 +9712,8 @@ snapshots:
 
   css.escape@1.5.1: {}
 
+  csscolorparser@1.0.3: {}
+
   cssesc@3.0.0: {}
 
   cssfilter@0.0.10:
@@ -9803,6 +9895,8 @@ snapshots:
 
   earcut@2.2.4: {}
 
+  earcut@3.0.0: {}
+
   eastasianwidth@0.2.0: {}
 
   ee-first@1.1.1: {}
@@ -10236,6 +10330,8 @@ snapshots:
     dependencies:
       format: 0.2.2
 
+  fflate@0.8.2: {}
+
   file-entry-cache@8.0.0:
     dependencies:
       flat-cache: 4.0.1
@@ -10476,6 +10572,8 @@ snapshots:
 
   graphemer@1.4.0: {}
 
+  grid-index@1.1.0: {}
+
   gzip-size@7.0.0:
     dependencies:
       duplexer: 0.1.2
@@ -11072,6 +11170,8 @@ snapshots:
 
   lodash.camelcase@4.3.0: {}
 
+  lodash.clonedeep@4.5.0: {}
+
   lodash.debounce@4.0.8: {}
 
   lodash.defaults@4.2.0: {}
@@ -11127,6 +11227,43 @@ snapshots:
     dependencies:
       semver: 6.3.1
 
+  map-gl-indoor@0.5.0(mapbox-gl@3.5.1):
+    dependencies:
+      '@turf/bbox': 6.5.0
+      '@turf/destination': 6.5.0
+      '@turf/distance': 6.5.0
+      mapbox-gl: 3.5.1
+
+  mapbox-gl@3.5.1:
+    dependencies:
+      '@mapbox/jsonlint-lines-primitives': 2.0.2
+      '@mapbox/mapbox-gl-supported': 3.0.0
+      '@mapbox/point-geometry': 0.1.0
+      '@mapbox/tiny-sdf': 2.0.6
+      '@mapbox/unitbezier': 0.0.1
+      '@mapbox/vector-tile': 1.3.1
+      '@mapbox/whoots-js': 3.1.0
+      cheap-ruler: 4.0.0
+      csscolorparser: 1.0.3
+      earcut: 3.0.0
+      fflate: 0.8.2
+      geojson-vt: 4.0.2
+      gl-matrix: 3.4.3
+      grid-index: 1.1.0
+      kdbush: 4.0.2
+      lodash.clonedeep: 4.5.0
+      murmurhash-js: 1.0.0
+      pbf: 3.2.1
+      potpack: 2.0.0
+      quickselect: 2.0.0
+      rw: 1.3.3
+      serialize-to-js: 3.1.2
+      supercluster: 8.0.1
+      tiny-lru: 11.2.11
+      tinyqueue: 2.0.3
+      tweakpane: 4.0.4
+      vt-pbf: 3.1.3
+
   maplibre-gl@4.5.0:
     dependencies:
       '@mapbox/geojson-rewind': 0.5.2
@@ -12833,6 +12970,8 @@ snapshots:
     dependencies:
       randombytes: 2.1.0
 
+  serialize-to-js@3.1.2: {}
+
   serve-placeholder@2.0.2:
     dependencies:
       defu: 6.1.4
@@ -13363,6 +13502,8 @@ snapshots:
 
   tiny-invariant@1.3.3: {}
 
+  tiny-lru@11.2.11: {}
+
   tinyqueue@2.0.3: {}
 
   tinyrainbow@1.2.0: {}
@@ -13426,6 +13567,8 @@ snapshots:
       safe-buffer: 5.2.1
     optional: true
 
+  tweakpane@4.0.4: {}
+
   type-check@0.4.0:
     dependencies:
       prelude-ls: 1.2.1
diff --git a/webclient/public/example.geojson b/webclient/public/example.geojson
new file mode 100644
index 000000000..e044326e1
--- /dev/null
+++ b/webclient/public/example.geojson
@@ -0,0 +1,3690 @@
+{
+  "type": "FeatureCollection",
+  "features": [
+    {
+      "type": "Feature",
+      "id": "way/-1",
+      "properties": {
+        "building": "residential",
+        "levels": "5",
+        "min_level": "-1",
+        "max_level": "3",
+        "id": "way/-1"
+      },
+      "geometry": {
+        "type": "Polygon",
+        "coordinates": [
+          [
+            [8.3909479, 49.0332499],
+            [8.3909058, 49.0332322],
+            [8.3909184, 49.0332192],
+            [8.3908934, 49.0332088],
+            [8.3909449, 49.0331556],
+            [8.3909446, 49.0331554],
+            [8.390893, 49.0332086],
+            [8.3908739, 49.0332006],
+            [8.3908613, 49.0332136],
+            [8.3908192, 49.0331959],
+            [8.3908318, 49.0331829],
+            [8.3908068, 49.0331725],
+            [8.3908583, 49.0331193],
+            [8.390858, 49.0331192],
+            [8.3908064, 49.0331723],
+            [8.3907873, 49.0331643],
+            [8.3907747, 49.0331773],
+            [8.3907326, 49.0331597],
+            [8.3907452, 49.0331467],
+            [8.3907202, 49.0331362],
+            [8.3907717, 49.033083],
+            [8.3907714, 49.0330829],
+            [8.3907199, 49.0331361],
+            [8.3907007, 49.033128],
+            [8.3906881, 49.033141],
+            [8.390646, 49.0331234],
+            [8.3906586, 49.0331104],
+            [8.3906336, 49.0330999],
+            [8.3906851, 49.0330467],
+            [8.3906848, 49.0330466],
+            [8.3906333, 49.0330998],
+            [8.3906141, 49.0330918],
+            [8.3906015, 49.0331048],
+            [8.3905594, 49.0330871],
+            [8.390572, 49.0330741],
+            [8.3905275, 49.0330555],
+            [8.3905149, 49.0330685],
+            [8.3904728, 49.0330509],
+            [8.3904854, 49.0330378],
+            [8.3904604, 49.0330274],
+            [8.3905119, 49.0329742],
+            [8.3905116, 49.0329741],
+            [8.3904601, 49.0330272],
+            [8.3904409, 49.0330192],
+            [8.3904283, 49.0330322],
+            [8.3903862, 49.0330146],
+            [8.3903988, 49.0330016],
+            [8.3903738, 49.0329911],
+            [8.3904254, 49.0329379],
+            [8.390425, 49.0329378],
+            [8.3903735, 49.032991],
+            [8.3903543, 49.0329829],
+            [8.3903417, 49.0329959],
+            [8.3902996, 49.0329783],
+            [8.3903122, 49.0329653],
+            [8.3902872, 49.0329548],
+            [8.3903388, 49.0329017],
+            [8.3903384, 49.0329015],
+            [8.3902869, 49.0329547],
+            [8.3902677, 49.0329467],
+            [8.3902551, 49.0329597],
+            [8.390213, 49.032942],
+            [8.3902256, 49.032929],
+            [8.3902006, 49.0329186],
+            [8.3902522, 49.0328654],
+            [8.3902518, 49.0328652],
+            [8.3902003, 49.0329184],
+            [8.3901811, 49.0329104],
+            [8.3901685, 49.0329234],
+            [8.3901264, 49.0329058],
+            [8.390139, 49.0328928],
+            [8.3901135, 49.032882],
+            [8.390165, 49.0328289],
+            [8.3901797, 49.0328137],
+            [8.3901807, 49.0328141],
+            [8.390166, 49.0328293],
+            [8.3901701, 49.032831],
+            [8.3901818, 49.0328189],
+            [8.3902153, 49.0328329],
+            [8.3902035, 49.032845],
+            [8.3902515, 49.0328651],
+            [8.3902662, 49.0328499],
+            [8.3902673, 49.0328504],
+            [8.3902526, 49.0328656],
+            [8.3902567, 49.0328673],
+            [8.3902684, 49.0328551],
+            [8.3903019, 49.0328691],
+            [8.3902901, 49.0328813],
+            [8.3903381, 49.0329014],
+            [8.3903528, 49.0328862],
+            [8.3903539, 49.0328867],
+            [8.3903392, 49.0329018],
+            [8.3903433, 49.0329035],
+            [8.390355, 49.0328914],
+            [8.3903885, 49.0329054],
+            [8.3903767, 49.0329176],
+            [8.3904247, 49.0329377],
+            [8.3904394, 49.0329225],
+            [8.3904405, 49.0329229],
+            [8.3904258, 49.0329381],
+            [8.3904299, 49.0329398],
+            [8.3904416, 49.0329277],
+            [8.3904751, 49.0329417],
+            [8.3904633, 49.0329538],
+            [8.3905113, 49.0329739],
+            [8.390526, 49.0329588],
+            [8.390527, 49.0329592],
+            [8.3905123, 49.0329744],
+            [8.3905164, 49.0329761],
+            [8.3905282, 49.032964],
+            [8.3905617, 49.032978],
+            [8.3905499, 49.0329901],
+            [8.3905977, 49.0330101],
+            [8.3906124, 49.032995],
+            [8.3906135, 49.0329954],
+            [8.3905988, 49.0330106],
+            [8.390603, 49.0330124],
+            [8.3906148, 49.0330002],
+            [8.3906483, 49.0330142],
+            [8.3906365, 49.0330264],
+            [8.3906845, 49.0330465],
+            [8.3906992, 49.0330313],
+            [8.3907002, 49.0330317],
+            [8.3906855, 49.0330469],
+            [8.3906896, 49.0330486],
+            [8.3907014, 49.0330365],
+            [8.3907349, 49.0330505],
+            [8.3907231, 49.0330627],
+            [8.3907711, 49.0330828],
+            [8.3907858, 49.0330676],
+            [8.3907868, 49.033068],
+            [8.3907721, 49.0330832],
+            [8.3907762, 49.0330849],
+            [8.390788, 49.0330728],
+            [8.3908215, 49.0330868],
+            [8.3908097, 49.0330989],
+            [8.3908577, 49.033119],
+            [8.3908724, 49.0331039],
+            [8.3908734, 49.0331043],
+            [8.3908587, 49.0331195],
+            [8.3908628, 49.0331212],
+            [8.3908746, 49.033109],
+            [8.390908, 49.0331231],
+            [8.3908963, 49.0331352],
+            [8.3909443, 49.0331553],
+            [8.390959, 49.0331401],
+            [8.39096, 49.0331406],
+            [8.3909453, 49.0331557],
+            [8.3909494, 49.0331575],
+            [8.3909612, 49.0331453],
+            [8.3909946, 49.0331593],
+            [8.3909829, 49.0331715],
+            [8.3910307, 49.0331915],
+            [8.3910454, 49.0331763],
+            [8.3910464, 49.0331768],
+            [8.3910317, 49.0331919],
+            [8.3909802, 49.0332451],
+            [8.3909605, 49.0332368],
+            [8.3909479, 49.0332499]
+          ]
+        ]
+      }
+    },
+    {
+      "type": "Feature",
+      "id": "way/-2",
+      "properties": {
+        "indoor": "room",
+        "ref": "08.0.3",
+        "level": "-1",
+        "level:ref": "KG",
+        "id": "way/-2"
+      },
+      "geometry": {
+        "type": "Polygon",
+        "coordinates": [
+          [
+            [8.390373, 49.0329881],
+            [8.3903196, 49.0329657],
+            [8.3903344, 49.0329505],
+            [8.3903878, 49.0329729],
+            [8.390373, 49.0329881]
+          ]
+        ]
+      }
+    },
+    {
+      "type": "Feature",
+      "id": "way/-3",
+      "properties": {
+        "indoor": "room",
+        "ref": "02.0.2",
+        "level": "-1",
+        "level:ref": "KG",
+        "id": "way/-3"
+      },
+      "geometry": {
+        "type": "Polygon",
+        "coordinates": [
+          [
+            [8.3908381, 49.0331829],
+            [8.3908109, 49.0331715],
+            [8.3908257, 49.0331563],
+            [8.3908528, 49.0331677],
+            [8.3908381, 49.0331829]
+          ]
+        ]
+      }
+    },
+    {
+      "type": "Feature",
+      "id": "way/-4",
+      "properties": {
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+            [8.3902722, 49.0329244],
+            [8.3903012, 49.0329366],
+            [8.3902864, 49.0329518]
+          ]
+        ]
+      }
+    },
+    {
+      "type": "Feature",
+      "id": "way/-125",
+      "properties": {
+        "indoor": "room",
+        "ref": "2.3.3",
+        "level": "2",
+        "level:ref": "2.OG",
+        "id": "way/-125"
+      },
+      "geometry": {
+        "type": "Polygon",
+        "coordinates": [
+          [
+            [8.3908334, 49.033181],
+            [8.3908109, 49.0331715],
+            [8.3908257, 49.0331563],
+            [8.3908482, 49.0331657],
+            [8.3908334, 49.033181]
+          ]
+        ]
+      }
+    },
+    {
+      "type": "Feature",
+      "id": "way/-126",
+      "properties": {
+        "indoor": "room",
+        "ref": "2.3.4",
+        "level": "2",
+        "level:ref": "2.OG",
+        "id": "way/-126"
+      },
+      "geometry": {
+        "type": "Polygon",
+        "coordinates": [
+          [
+            [8.3908926, 49.0332057],
+            [8.3908346, 49.0331814],
+            [8.3908493, 49.0331662],
+            [8.3908552, 49.0331687],
+            [8.3908558, 49.0331681],
+            [8.390866, 49.0331724],
+            [8.3908654, 49.0331729],
+            [8.3908681, 49.0331741],
+            [8.3908686, 49.0331735],
+            [8.3908789, 49.0331778],
+            [8.3908783, 49.0331783],
+            [8.3909073, 49.0331905],
+            [8.3908926, 49.0332057]
+          ]
+        ]
+      }
+    },
+    {
+      "type": "Feature",
+      "id": "way/-127",
+      "properties": {
+        "indoor": "room",
+        "ref": "2.3.2",
+        "level": "2",
+        "level:ref": "2.OG",
+        "id": "way/-127"
+      },
+      "geometry": {
+        "type": "Polygon",
+        "coordinates": [
+          [
+            [8.3904343, 49.0329905],
+            [8.390394, 49.0329736],
+            [8.3904258, 49.0329408],
+            [8.3904661, 49.0329577],
+            [8.3904343, 49.0329905]
+          ]
+        ]
+      }
+    },
+    {
+      "type": "Feature",
+      "id": "way/-128",
+      "properties": {
+        "indoor": "room",
+        "ref": "2.3.1",
+        "level": "2",
+        "level:ref": "2.OG",
+        "id": "way/-128"
+      },
+      "geometry": {
+        "type": "Polygon",
+        "coordinates": [
+          [
+            [8.3904757, 49.0330078],
+            [8.3904354, 49.0329909],
+            [8.3904672, 49.0329581],
+            [8.3905075, 49.032975],
+            [8.3904757, 49.0330078]
+          ]
+        ]
+      }
+    },
+    {
+      "type": "Feature",
+      "id": "way/-129",
+      "properties": {
+        "indoor": "room",
+        "ref": "5.3.4",
+        "level": "2",
+        "level:ref": "2.OG",
+        "id": "way/-129"
+      },
+      "geometry": {
+        "type": "Polygon",
+        "coordinates": [
+          [
+            [8.3906328, 49.0330969],
+            [8.3905748, 49.0330726],
+            [8.3905895, 49.0330574],
+            [8.3905955, 49.0330598],
+            [8.390596, 49.0330593],
+            [8.3906062, 49.0330636],
+            [8.3906057, 49.0330641],
+            [8.3906083, 49.0330652],
+            [8.3906089, 49.0330647],
+            [8.3906191, 49.0330689],
+            [8.3906185, 49.0330695],
+            [8.3906476, 49.0330817],
+            [8.3906328, 49.0330969]
+          ]
+        ]
+      }
+    },
+    {
+      "type": "Feature",
+      "id": "way/-130",
+      "properties": {
+        "indoor": "room",
+        "ref": "2.3.1",
+        "level": "2",
+        "level:ref": "2.OG",
+        "id": "way/-130"
+      },
+      "geometry": {
+        "type": "Polygon",
+        "coordinates": [
+          [
+            [8.3909086, 49.0331892],
+            [8.3908684, 49.0331723],
+            [8.3909002, 49.0331395],
+            [8.3909404, 49.0331564],
+            [8.3909086, 49.0331892]
+          ]
+        ]
+      }
+    },
+    {
+      "type": "Feature",
+      "id": "way/-131",
+      "properties": {
+        "indoor": "room",
+        "ref": "1.3.2",
+        "level": "2",
+        "level:ref": "2.OG",
+        "id": "way/-131"
+      },
+      "geometry": {
+        "type": "Polygon",
+        "coordinates": [
+          [
+            [8.3909538, 49.0332081],
+            [8.3909136, 49.0331912],
+            [8.3909454, 49.0331584],
+            [8.3909856, 49.0331753],
+            [8.3909538, 49.0332081]
+          ]
+        ]
+      }
+    },
+    {
+      "type": "Feature",
+      "id": "way/-132",
+      "properties": {
+        "indoor": "room",
+        "ref": "3.3.3",
+        "level": "2",
+        "level:ref": "2.OG",
+        "id": "way/-132"
+      },
+      "geometry": {
+        "type": "Polygon",
+        "coordinates": [
+          [
+            [8.3903138, 49.0329633],
+            [8.3902914, 49.0329539],
+            [8.3903061, 49.0329387],
+            [8.3903286, 49.0329481],
+            [8.3903138, 49.0329633]
+          ]
+        ]
+      }
+    },
+    {
+      "type": "Feature",
+      "id": "way/-133",
+      "properties": {
+        "indoor": "room",
+        "ref": "3.3.4",
+        "level": "2",
+        "level:ref": "2.OG",
+        "id": "way/-133"
+      },
+      "geometry": {
+        "type": "Polygon",
+        "coordinates": [
+          [
+            [8.390806, 49.0331695],
+            [8.390748, 49.0331452],
+            [8.3907627, 49.0331299],
+            [8.3907686, 49.0331324],
+            [8.3907692, 49.0331318],
+            [8.3907794, 49.0331361],
+            [8.3907789, 49.0331367],
+            [8.3907815, 49.0331378],
+            [8.3907821, 49.0331372],
+            [8.3907923, 49.0331415],
+            [8.3907917, 49.0331421],
+            [8.3908207, 49.0331542],
+            [8.390806, 49.0331695]
+          ]
+        ]
+      }
+    },
+    {
+      "type": "Feature",
+      "id": "way/-134",
+      "properties": {
+        "indoor": "room",
+        "ref": "4.3.3",
+        "level": "2",
+        "level:ref": "2.OG",
+        "id": "way/-134"
+      },
+      "geometry": {
+        "type": "Polygon",
+        "coordinates": [
+          [
+            [8.3906602, 49.0331084],
+            [8.3906377, 49.033099],
+            [8.3906525, 49.0330838],
+            [8.390675, 49.0330932],
+            [8.3906602, 49.0331084]
+          ]
+        ]
+      }
+    },
+    {
+      "type": "Feature",
+      "id": "way/-135",
+      "properties": {
+        "indoor": "room",
+        "ref": "5.3.3",
+        "level": "2",
+        "level:ref": "2.OG",
+        "id": "way/-135"
+      },
+      "geometry": {
+        "type": "Polygon",
+        "coordinates": [
+          [
+            [8.3901407, 49.0328908],
+            [8.3901182, 49.0328814],
+            [8.390133, 49.0328661],
+            [8.3901554, 49.0328755],
+            [8.3901407, 49.0328908]
+          ]
+        ]
+      }
+    },
+    {
+      "type": "Feature",
+      "id": "way/-136",
+      "properties": {
+        "indoor": "room",
+        "ref": "2.3.4",
+        "level": "2",
+        "level:ref": "2.OG",
+        "id": "way/-136"
+      },
+      "geometry": {
+        "type": "Polygon",
+        "coordinates": [
+          [
+            [8.3904596, 49.0330244],
+            [8.3904016, 49.0330001],
+            [8.3904164, 49.0329848],
+            [8.3904223, 49.0329873],
+            [8.3904228, 49.0329867],
+            [8.390433, 49.032991],
+            [8.3904325, 49.0329916],
+            [8.3904351, 49.0329927],
+            [8.3904357, 49.0329921],
+            [8.3904459, 49.0329964],
+            [8.3904453, 49.032997],
+            [8.3904744, 49.0330091],
+            [8.3904596, 49.0330244]
+          ]
+        ]
+      }
+    },
+    {
+      "type": "Feature",
+      "id": "way/-137",
+      "properties": {
+        "indoor": "room",
+        "ref": "3.3.4",
+        "level": "2",
+        "level:ref": "2.OG",
+        "id": "way/-137"
+      },
+      "geometry": {
+        "type": "Polygon",
+        "coordinates": [
+          [
+            [8.390373, 49.0329881],
+            [8.390315, 49.0329638],
+            [8.3903298, 49.0329486],
+            [8.3903357, 49.032951],
+            [8.3903362, 49.0329505],
+            [8.3903464, 49.0329547],
+            [8.3903459, 49.0329553],
+            [8.3903485, 49.0329564],
+            [8.3903491, 49.0329558],
+            [8.3903593, 49.0329601],
+            [8.3903587, 49.0329607],
+            [8.3903878, 49.0329729],
+            [8.390373, 49.0329881]
+          ]
+        ]
+      }
+    },
+    {
+      "type": "Feature",
+      "id": "way/-138",
+      "properties": {
+        "indoor": "room",
+        "ref": "1.3.1",
+        "level": "2",
+        "level:ref": "2.OG",
+        "id": "way/-138"
+      },
+      "geometry": {
+        "type": "Polygon",
+        "coordinates": [
+          [
+            [8.3909952, 49.0332254],
+            [8.390955, 49.0332086],
+            [8.3909868, 49.0331758],
+            [8.391027, 49.0331926],
+            [8.3909952, 49.0332254]
+          ]
+        ]
+      }
+    },
+    {
+      "type": "Feature",
+      "id": "way/-139",
+      "properties": {
+        "indoor": "room",
+        "ref": "5.3.4",
+        "level": "2",
+        "level:ref": "2.OG",
+        "id": "way/-139"
+      },
+      "geometry": {
+        "type": "Polygon",
+        "coordinates": [
+          [
+            [8.3901998, 49.0329156],
+            [8.3901418, 49.0328913],
+            [8.3901566, 49.032876],
+            [8.3901625, 49.0328785],
+            [8.390163, 49.0328779],
+            [8.3901732, 49.0328822],
+            [8.3901727, 49.0328828],
+            [8.3901753, 49.0328839],
+            [8.3901759, 49.0328833],
+            [8.3901861, 49.0328876],
+            [8.3901856, 49.0328881],
+            [8.3902146, 49.0329003],
+            [8.3901998, 49.0329156]
+          ]
+        ]
+      }
+    },
+    {
+      "type": "Feature",
+      "id": "way/-140",
+      "properties": {
+        "indoor": "room",
+        "ref": "3.3.1",
+        "level": "2",
+        "level:ref": "2.OG",
+        "id": "way/-140"
+      },
+      "geometry": {
+        "type": "Polygon",
+        "coordinates": [
+          [
+            [8.390822, 49.0331529],
+            [8.3907818, 49.033136],
+            [8.3908136, 49.0331032],
+            [8.3908538, 49.0331201],
+            [8.390822, 49.0331529]
+          ]
+        ]
+      }
+    },
+    {
+      "type": "Feature",
+      "id": "way/-141",
+      "properties": {
+        "indoor": "room",
+        "ref": "2.3.3",
+        "level": "2",
+        "level:ref": "2.OG",
+        "id": "way/-141"
+      },
+      "geometry": {
+        "type": "Polygon",
+        "coordinates": [
+          [
+            [8.3904004, 49.0329996],
+            [8.390378, 49.0329902],
+            [8.3903927, 49.0329749],
+            [8.3904152, 49.0329843],
+            [8.3904004, 49.0329996]
+          ]
+        ]
+      }
+    }
+  ]
+}

From 1a6e27d9293331ded2d4593a32d7466502162bd8 Mon Sep 17 00:00:00 2001
From: Frank Elsinga <frank@elsinga.de>
Date: Sat, 13 Jul 2024 18:56:08 +0200
Subject: [PATCH 2/3] custom styling

---
 .../app/components/DetailsInteractiveMap.vue  | 27 ++++++++++++++++++-
 1 file changed, 26 insertions(+), 1 deletion(-)

diff --git a/webclient/app/components/DetailsInteractiveMap.vue b/webclient/app/components/DetailsInteractiveMap.vue
index 9bb5b6654..2c80be35e 100644
--- a/webclient/app/components/DetailsInteractiveMap.vue
+++ b/webclient/app/components/DetailsInteractiveMap.vue
@@ -163,11 +163,36 @@ async function initMap(containerId: string) {
     map.addControl(attrib);
     attrib._toggleAttribution();
   });
+
   addIndoorTo(map);
 
   // Retrieve the geojson from the path and add the map
   const geojson = await (await fetch("/example.geojson")).json();
-  await map.indoor.addMap(IndoorMap.fromGeojson(geojson));
+  const layers = [
+    {
+      filter: ["filter-==", "indoor", "room"],
+      id: "indoor-rooms",
+      type: "fill",
+      source: "indoor",
+      paint: {
+        "fill-color": "#FF0000",
+        "fill-opacity": 0.5,
+      },
+    },
+    {
+      filter: ["filter-==", "indoor", "area"],
+      id: "indoor-areas",
+      type: "fill",
+      source: "indoor",
+      paint: {
+        "fill-color": "#0000FF",
+        "fill-opacity": 0.5,
+      },
+    },
+  ];
+
+  const indoorMap = IndoorMap.fromGeojson(geojson, { layers, showFeaturesWithEmptyLevel: true });
+  await map.indoor.addMap(indoorMap);
 
   // Add the specific control
   map.addControl(new IndoorControl(), "bottom-left");

From dd350bca60e0beb959e32722c36cb92b621231b4 Mon Sep 17 00:00:00 2001
From: Frank Elsinga <frank@elsinga.de>
Date: Sat, 13 Jul 2024 21:59:02 +0200
Subject: [PATCH 3/3] better styling

---
 .../app/components/DetailsInteractiveMap.vue  | 26 +-----
 webclient/app/composables/indoorLayer.ts      | 85 +++++++++++++++++++
 2 files changed, 87 insertions(+), 24 deletions(-)
 create mode 100644 webclient/app/composables/indoorLayer.ts

diff --git a/webclient/app/components/DetailsInteractiveMap.vue b/webclient/app/components/DetailsInteractiveMap.vue
index 2c80be35e..6dcff801b 100644
--- a/webclient/app/components/DetailsInteractiveMap.vue
+++ b/webclient/app/components/DetailsInteractiveMap.vue
@@ -6,6 +6,7 @@ import { webglSupport } from "~/composables/webglSupport";
 // @ts-expect-error library does not provide proper types
 import type { MaplibreMapWithIndoor } from "map-gl-indoor";
 import type { components } from "~/api_types";
+import { indoorLayers } from "~/composables/indoorLayer";
 
 const props = defineProps<{ data: DetailsResponse }>();
 const map = ref<MaplibreMapWithIndoor | undefined>(undefined);
@@ -168,30 +169,7 @@ async function initMap(containerId: string) {
 
   // Retrieve the geojson from the path and add the map
   const geojson = await (await fetch("/example.geojson")).json();
-  const layers = [
-    {
-      filter: ["filter-==", "indoor", "room"],
-      id: "indoor-rooms",
-      type: "fill",
-      source: "indoor",
-      paint: {
-        "fill-color": "#FF0000",
-        "fill-opacity": 0.5,
-      },
-    },
-    {
-      filter: ["filter-==", "indoor", "area"],
-      id: "indoor-areas",
-      type: "fill",
-      source: "indoor",
-      paint: {
-        "fill-color": "#0000FF",
-        "fill-opacity": 0.5,
-      },
-    },
-  ];
-
-  const indoorMap = IndoorMap.fromGeojson(geojson, { layers, showFeaturesWithEmptyLevel: true });
+  const indoorMap = IndoorMap.fromGeojson(geojson, { indoorLayers, showFeaturesWithEmptyLevel: true });
   await map.indoor.addMap(indoorMap);
 
   // Add the specific control
diff --git a/webclient/app/composables/indoorLayer.ts b/webclient/app/composables/indoorLayer.ts
new file mode 100644
index 000000000..8187b7374
--- /dev/null
+++ b/webclient/app/composables/indoorLayer.ts
@@ -0,0 +1,85 @@
+export const indoorLayers = [
+  {
+    filter: ["filter-==", "indoor", "room"],
+    id: "indoor-rooms",
+    type: "fill",
+    source: "indoor",
+    paint: {
+      "fill-color": "#e0e0e0",
+      "fill-opacity": 0.5,
+      "fill-outline-color": "#000",
+      "fill-antialias": true, // otherwise the outline is invisible sometimes..
+      "text-offset": 'eval(prop("placement_offset","default"))',
+      text:
+        "eval(" +
+        'has_tag_key("amenity")' +
+        '?concat(get(split(";",tag(room)),0)," (",get(split(";",tag("amenity")),0),")")' +
+        ':has_tag_key("shop")' +
+        '?concat(get(split(";",tag(room)),0)," (",get(split(";",tag("shop")),0),")")' +
+        ':has_tag_key("name")' +
+        '?concat(get(split(";",tag(room)),0)," (",get(split(";",tag("name")),0),")")' +
+        ':has_tag_key("level")' +
+        '?concat(get(split(";",tag(room)),0)," (",get(split(";",tag("level")),0),")")' +
+        ':get(split(";",tag(room)),0))',
+      "font-size": 'eval(prop(lane_default_width,"default"))',
+      "text-color": "white",
+      "text-opacity": 1,
+      "text-halo-radius": 2,
+      "text-halo-color": "blue",
+      "text-halo-opacity": 0.3,
+    },
+  },
+  {
+    filter: ["filter-==", "indoor", "corridor"],
+    id: "indoor-corridors",
+    type: "fill",
+    source: "indoor",
+    paint: {
+      "fill-color": "#8dd1fc",
+      "fill-opacity": 0.5,
+      "fill-outline-color": "#000",
+      "fill-antialias": true, // otherwise the outline is invisible sometimes..
+      "border-color": "#000",
+    },
+  },
+  {
+    filter: ["filter-==", "indoor", "area"],
+    id: "indoor-areas",
+    type: "fill",
+    source: "indoor",
+    paint: {
+      "fill-color": "#ff0084",
+      "fill-outline-color": "#000",
+      "fill-antialias": true, // otherwise the outline is invisible sometimes..
+      "fill-opacity": 0.5,
+      "text-offset": 'eval(prop("placement_offset","default"))',
+      text: 'eval(has_tag_key("level")?concat(prop(text)," (",get(split(";",tag("level")),0),")"):prop(text))',
+      "font-size": 'eval(prop(lane_default_width,"default"))',
+      "text-color": "white",
+      "text-opacity": 1,
+      "text-halo-radius": 2,
+      "text-halo-color": "blue",
+      "text-halo-opacity": 0.3,
+    },
+  },
+  {
+    filter: ["filter-==", "indoor", "wall"],
+    id: "indoor-walls",
+    type: "fill",
+    source: "indoor",
+    paint: {
+      "fill-color": "#000",
+      "fill-opacity": 0.5,
+    },
+  },
+  {
+    filter: ["filter-==", "indoor", "door"],
+    id: "indoor-doors",
+    type: "fill",
+    source: "indoor",
+    paint: {
+      "fill-color": "#00ffcc",
+      "fill-opacity": 0.5,
+    },
+  },
+];