From 774822fb6a0840eabae158580795c95bce805df1 Mon Sep 17 00:00:00 2001
From: jessikitty <jess.rogerson.29@outlook.com>
Date: Fri, 24 Jul 2026 14:11:17 +1000
Subject: [PATCH] Apply scene ghost height to viewer ghosts, live on scene
 updates

---
 public/js/exhibit.js | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/public/js/exhibit.js b/public/js/exhibit.js
index cd4245e..cd0e4b6 100644
--- a/public/js/exhibit.js
+++ b/public/js/exhibit.js
@@ -16,6 +16,7 @@ let info = { mode: 'dev' };
 let scene3, camera3, renderer, video, canvas2d, ctx2d;
 let detector, poseEst, fuser;
 let gradients = {}, modelManifest = null;
+let ghostHeight = 4; // cm, from scene.ghostHeightCm
 const activeGhosts = new Map(); // uid -> { rec, group }
 let tracking = { markers: 0, lastSeen: 0 };
 const clockOffsetSamples = [];
@@ -62,7 +63,11 @@ async function start() {
 
   // network
   const net = new ExhibitNet();
-  net.on('scene', (m) => { fuser.setScene(m.scene); buildOcclusion(m.scene); })
+  net.on('scene', (m) => {
+       fuser.setScene(m.scene); buildOcclusion(m.scene);
+       ghostHeight = m.scene.ghostHeightCm || 4;
+       for (const e of activeGhosts.values()) e.group.userData.setHeight(ghostHeight);
+     })
      .on('active', async (m) => {
        for (const uid of [...activeGhosts.keys()]) removeGhost(uid);
        for (const rec of m.ghosts) await addGhost(rec);
@@ -107,6 +112,7 @@ function buildOcclusion(scene) {
 async function addGhost(rec) {
   if (activeGhosts.has(rec.uid)) return;
   const group = await buildGhost(rec, gradients, modelManifest);
+  group.userData.setHeight(ghostHeight);
   scene3.add(group);
   activeGhosts.set(rec.uid, { rec, group });
   toast(`${rec.name} appeared`);