edited

main.js

@@ -1,4 +1,11 @@
 import maplibregl from "maplibre-gl";
+import proj4 from "proj4";
+import * as THREE from "three";
+console.log(THREE);
+proj4.defs(
+  "EPSG:25832",
+  "+proj=utm +zone=32 +ellps=GRS80 +units=m +no_defs"
+);
 
 
 const center = [9.209116842757239, 52.26520546238239]
@@ -28,7 +35,6 @@ viewer.setPointBudget(3*1000*1000);
 viewer.setMinNodeSize(0);
 viewer.setBackground("none"); 
 
-//viewer.setControls(null);
 
 //Dateipfade der Punktwolken
 const pointCloudFiles={
@@ -37,6 +43,8 @@ const pointCloudFiles={
   second: 'standpunkt2/metadata.json',
   third: 'punktwolke_3_converted/metadata.json',
 }
+
+
 //Aktuelle Datei und Sichtbarkeit
 let currentPointCloud=null;
 let isVisible=true;
@@ -70,59 +78,99 @@ function loadPointCloud(path){
   });
 }
 
-// Geo-Koordinaten der Punktwolke (müssen zu euren Daten passen!)
-// Das ist der Georeferenzpunkt – idealerweise aus den Metadaten der Punktwolke
-const CLOUD_GEO_ORIGIN = {
-    lng: 9.209116842757239,
-    lat: 52.26520546238239
-};
-
-// Hilfsfunktion: MapLibre Mercator → Meter-Offset relativ zum Ursprung
-function lngLatToMeters(lng, lat, originLng, originLat) {
-    const R = 6378137; // Erdradius in Metern (WGS84)
-    const dLng = (lng - originLng) * Math.PI / 180;
-    const dLat = (lat - originLat) * Math.PI / 180;
-    const dx = R * dLng * Math.cos(originLat * Math.PI / 180);
-    const dy = R * dLat;
-    return { x: dx, y: dy };
-}
 
 function syncCamera() {
+
     if (!currentPointCloud) return;
 
-    const mapCenter = map.getCenter();
+    const center = map.getCenter();
-    const zoom      = map.getZoom();
-    const pitch     = map.getPitch();   // Grad, 0 = top-down
-    const bearing   = map.getBearing(); // Grad
 
-    const box = currentPointCloud.boundingBox;
+    // -----------------------------------------
-    const cx = (box.min.x + box.max.x) / 2;
+    // WGS84 -> ETRS89 / UTM32
-    const cy = (box.min.y + box.max.y) / 2;
+    // -----------------------------------------
-    const cz = (box.min.z + box.max.z) / 2;
 
-    // Radius aus Zoom ableiten (Abstand Kamera → Target)
+    const [x, y] = proj4(
-    const earthCircumference = 2 * Math.PI * 6378137;
+        "EPSG:4326",
-    const canvas = map.getCanvas();
+        "EPSG:25832",
-    const metersPerPixel = (earthCircumference * Math.cos(mapCenter.lat * Math.PI / 180))
+        [center.lng, center.lat]
-                           / (Math.pow(2, zoom) * 512);
+    );
-    const radius = Math.pow(2,20 -zoom)*2;
 
-    // Potree View direkt setzen
+    // -----------------------------------------
-    const view = viewer.scene.view;
+    // Map Parameter
+    // -----------------------------------------
 
-    // Target = Wolken-Zentrum (lookAt mit 3 Argumenten nutzt new Vector3(...arguments))
+    const pitch = map.getPitch() * Math.PI / 180;
-    view.lookAt(cx, cy, cz);
+    const bearing = map.getBearing() * Math.PI / 180;
+    const zoom = map.getZoom();
 
-    // yaw = Himmelsrichtung: MapLibre bearing 0° = Nord, Potree yaw 0° = ??
+    // -----------------------------------------
-    // bearing in Potree-yaw umrechnen (ggf. Vorzeichen anpassen)
+    // Abstand abhängig vom Zoom
-    view.yaw   = -bearing * Math.PI / 180;
+    // -----------------------------------------
 
-    // pitch: MapLibre 0° = top-down, 60° = schräg
+    const earthCircumference = 40075016.686;
-    // Potree pitch: 0 = horizontal, -PI/2 = top-down → invertieren
-    view.pitch = -(90 - pitch) * Math.PI / 180;
 
-    // Radius = Zoom-abhängiger Abstand
+    const metersPerPixel =
-    view.radius = radius;
+        earthCircumference *
+        Math.cos(center.lat * Math.PI / 180) /
+        Math.pow(2, zoom + 8);
+
+    const distance =
+        metersPerPixel * map.getCanvas().height;
+
+    // -----------------------------------------
+    // Zielpunkt = Kartenzentrum
+    // -----------------------------------------
+
+    const target = new THREE.Vector3(
+        x,
+        y,
+        0
+    );
+
+    // -----------------------------------------
+    // Kameraoffset
+    // -----------------------------------------
+
+    const offset = new THREE.Vector3(
+        0,
+        -distance * Math.cos(pitch),
+        distance * Math.sin(pitch)
+    );
+
+    // Bearing rotieren
+    offset.applyAxisAngle(
+        new THREE.Vector3(0, 0, 1),
+        -bearing
+    );
+
+    // -----------------------------------------
+    // Kameraposition
+    // -----------------------------------------
+
+    const cameraPosition =
+        target.clone().add(offset);
+
+    // -----------------------------------------
+    // Potree Kamera setzen
+    // -----------------------------------------
+
+    const camera =
+        viewer.scene.getActiveCamera();
+
+    camera.position.copy(cameraPosition);
+
+    camera.lookAt(target);
+
+    viewer.scene.view.position.copy(cameraPosition);
+
+    viewer.scene.view.lookAt(target);
+
+    camera.updateMatrixWorld();
+
+    viewer.renderer.render(
+        viewer.scene.scene,
+        camera
+    );
 }
 
   map.on('move', ()=>{

package-lock.json

@@ -13,6 +13,8 @@
         "@loaders.gl/las": "^4.4.1",
         "deck.gl": "^9.3.1",
         "maplibre-gl": "^5.22.0",
+        "proj4": "^2.20.8",
+        "three": "^0.184.0",
         "vite": "^8.0.7"
       }
     },
@@ -1380,9 +1382,6 @@
       "cpu": [
         "arm64"
       ],
-      "libc": [
-        "glibc"
-      ],
       "license": "MIT",
       "optional": true,
       "os": [
@@ -1399,9 +1398,6 @@
       "cpu": [
         "arm64"
       ],
-      "libc": [
-        "musl"
-      ],
       "license": "MIT",
       "optional": true,
       "os": [
@@ -1418,9 +1414,6 @@
       "cpu": [
         "ppc64"
       ],
-      "libc": [
-        "glibc"
-      ],
       "license": "MIT",
       "optional": true,
       "os": [
@@ -1437,9 +1430,6 @@
       "cpu": [
         "s390x"
       ],
-      "libc": [
-        "glibc"
-      ],
       "license": "MIT",
       "optional": true,
       "os": [
@@ -1456,9 +1446,6 @@
       "cpu": [
         "x64"
       ],
-      "libc": [
-        "glibc"
-      ],
       "license": "MIT",
       "optional": true,
       "os": [
@@ -1475,9 +1462,6 @@
       "cpu": [
         "x64"
       ],
-      "libc": [
-        "musl"
-      ],
       "license": "MIT",
       "optional": true,
       "os": [
@@ -4069,9 +4053,6 @@
       "cpu": [
         "arm64"
       ],
-      "libc": [
-        "glibc"
-      ],
       "license": "MPL-2.0",
       "optional": true,
       "os": [
@@ -4092,9 +4073,6 @@
       "cpu": [
         "arm64"
       ],
-      "libc": [
-        "musl"
-      ],
       "license": "MPL-2.0",
       "optional": true,
       "os": [
@@ -4115,9 +4093,6 @@
       "cpu": [
         "x64"
       ],
-      "libc": [
-        "glibc"
-      ],
       "license": "MPL-2.0",
       "optional": true,
       "os": [
@@ -4138,9 +4113,6 @@
       "cpu": [
         "x64"
       ],
-      "libc": [
-        "musl"
-      ],
       "license": "MPL-2.0",
       "optional": true,
       "os": [
@@ -4335,6 +4307,12 @@
         "is-buffer": "~1.1.6"
       }
     },
+    "node_modules/mgrs": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/mgrs/-/mgrs-1.0.0.tgz",
+      "integrity": "sha512-awNbTOqCxK1DBGjalK3xqWIstBZgN6fxsMSiXLs9/spqWkF2pAhb2rrYCFSsr1/tT7PhcDGjZndG8SWYn0byYA==",
+      "license": "MIT"
+    },
     "node_modules/minimist": {
       "version": "1.2.8",
       "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.8.tgz",
@@ -4582,6 +4560,19 @@
       "integrity": "sha512-3ouUOpQhtgrbOa17J7+uxOTpITYWaGP7/AhoR3+A+/1e9skrzelGi/dXzEYyvbxubEF6Wn2ypscTKiKJFFn1ag==",
       "license": "MIT"
     },
+    "node_modules/proj4": {
+      "version": "2.20.8",
+      "resolved": "https://registry.npmjs.org/proj4/-/proj4-2.20.8.tgz",
+      "integrity": "sha512-1C8sfT4xY4PAPwk0MroFBTGF4R4bzDXdmPQTGYVLsoNssrZ9odzObxS2dTeGBty8jW8KO7h16C1Hs2JP+ctfFw==",
+      "license": "MIT",
+      "dependencies": {
+        "mgrs": "1.0.0",
+        "wkt-parser": "^1.5.5"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/ahocevar"
+      }
+    },
     "node_modules/protocol-buffers-schema": {
       "version": "3.6.1",
       "resolved": "https://registry.npmjs.org/protocol-buffers-schema/-/protocol-buffers-schema-3.6.1.tgz",
@@ -4924,6 +4915,12 @@
         "texture-compressor": "bin/texture-compressor.js"
       }
     },
+    "node_modules/three": {
+      "version": "0.184.0",
+      "resolved": "https://registry.npmjs.org/three/-/three-0.184.0.tgz",
+      "integrity": "sha512-wtTRjG92pM5eUg/KuUnHsqSAlPM296brTOcLgMRqEeylYTh/CdtvKUvCyyCQTzFuStieWxvZb8mVTMvdPyUpxg==",
+      "license": "MIT"
+    },
     "node_modules/timezone-groups": {
       "version": "0.10.4",
       "resolved": "https://registry.npmjs.org/timezone-groups/-/timezone-groups-0.10.4.tgz",
@@ -5110,6 +5107,15 @@
         }
       }
     },
+    "node_modules/wkt-parser": {
+      "version": "1.5.5",
+      "resolved": "https://registry.npmjs.org/wkt-parser/-/wkt-parser-1.5.5.tgz",
+      "integrity": "sha512-/zMYi94/7D7fxcOSlVmWn6vnOMj3Gq5d1xvVjaYOS9n6h0qOJ4I7YYVxBWYcH1vq9+suhqzXkn05Yx47zQNUIA==",
+      "license": "MIT",
+      "funding": {
+        "url": "https://github.com/sponsors/ahocevar"
+      }
+    },
     "node_modules/wordwrapjs": {
       "version": "5.1.1",
       "resolved": "https://registry.npmjs.org/wordwrapjs/-/wordwrapjs-5.1.1.tgz",

package.json

@@ -16,6 +16,8 @@
     "@loaders.gl/las": "^4.4.1",
     "deck.gl": "^9.3.1",
     "maplibre-gl": "^5.22.0",
+    "proj4": "^2.20.8",
+    "three": "^0.184.0",
     "vite": "^8.0.7"
   }
 }