Refine Gwanaksan summit marker proportions and inscription

src/constants/summitMarker.ts

@@ -0,0 +1,5 @@
+export const SUMMIT_MARKER = {
+  assetRevision: '8de117c42335',
+  buriedDepth: 0.12,
+  footHeight: 0.18,
+} as const;

src/scene/structures.ts

@@ -4,6 +4,7 @@ import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js';
 import { STRUCTURES, STRUCTURE_ASSETS } from '../constants/structures.ts';
 import { SUMMIT_RELIEF } from '../constants/summitRelief.ts';
 import { SUMMIT_PLATEAU } from '../constants/summitPlateau.ts';
+import { SUMMIT_MARKER } from '../constants/summitMarker.ts';
 import { summitPosition } from '../controls/summitCoordinates.ts';
 
 export type StructureAssets = Map<string, Group>;
@@ -14,7 +15,8 @@ export async function loadStructures(includeRelief = false): Promise<StructureAs
   const ids = [...STRUCTURES.towers.map(s => s.id), 'weather-radar', ...STRUCTURES.decks.map(s => s.id),
     ...(includeRelief ? [SUMMIT_RELIEF.assetId, SUMMIT_PLATEAU.marker.assetId] : [])];
   return new Map(await Promise.all(ids.map(async id => {
-    const model = await loader.loadAsync(STRUCTURE_ASSETS.baseUrl + '/' + id + '.glb');
+    const revision = id === SUMMIT_PLATEAU.marker.assetId ? `?v=${SUMMIT_MARKER.assetRevision}` : '';
+    const model = await loader.loadAsync(STRUCTURE_ASSETS.baseUrl + '/' + id + '.glb' + revision);
     return [id, model.scene] as const;
   })));
 }

src/scene/summitMarker.ts

@@ -1,5 +1,6 @@
-import { Group, Mesh, type Material, type BufferGeometry, type MeshStandardMaterial } from 'three';
+import { Box3, Group, Mesh, Vector3, type Material, type BufferGeometry, type MeshStandardMaterial } from 'three';
 import { SUMMIT_PLATEAU } from '../constants/summitPlateau.ts';
+import { SUMMIT_MARKER } from '../constants/summitMarker.ts';
 
 export function createSummitMarker(asset: Group, start: {x: number; z: number},
   groundAt: (x: number, z: number) => number, rockMaterial: MeshStandardMaterial) {
@@ -7,6 +8,23 @@ export function createSummitMarker(asset: Group, start: {x: number; z: number},
   group.name = SUMMIT_PLATEAU.marker.assetId;
   const [x,z] = SUMMIT_PLATEAU.marker.offset;
   group.position.set(start.x+x, groundAt(start.x+x,start.z+z), start.z+z);
+  group.add(asset);
+  group.updateMatrixWorld(true);
+  const base = new Box3().setFromObject(asset).min.y;
+  const point = new Vector3();
+  let seatingOffset = Infinity;
+  asset.traverse(object => {
+    if (!(object instanceof Mesh)) return;
+    const positions = object.geometry.getAttribute('position');
+    for (let i=0; i<positions.count; i++) {
+      point.fromBufferAttribute(positions,i).applyMatrix4(object.matrixWorld);
+      if (point.y-base > SUMMIT_MARKER.footHeight) continue;
+      seatingOffset = Math.min(seatingOffset,
+        groundAt(point.x,point.z)-SUMMIT_MARKER.buriedDepth-point.y);
+    }
+  });
+  if (Number.isFinite(seatingOffset)) group.position.y += seatingOffset;
+  group.updateMatrixWorld(true);
   const granite = rockMaterial.clone();
   granite.vertexColors = false;
   const materials = new Set<Material>([granite]);
@@ -17,7 +35,6 @@ export function createSummitMarker(asset: Group, start: {x: number; z: number},
     (Array.isArray(object.material) ? object.material : [object.material]).forEach(m => materials.add(m));
     if (object.name.replaceAll('_',' ') === 'Marker granite body') object.material = granite;
   });
-  group.add(asset);
   return { group, dispose() {
     geometries.forEach(g => g.dispose());
     materials.forEach(m => m.dispose());