Update viewer.js

viewer.js

@@ -157,6 +157,19 @@ export async function initializeViewer(config, instanceId) {
     resizeObserver = null;
   });
 
+  // --- iOS-specific fix: robust binary loader for PLY ---
+  // If window.PLY_FORCE_ARRAYBUFFER is set, override asset loader for PLY
+  if (window.PLY_FORCE_ARRAYBUFFER) {
+    const origRequest = pc.Http.request;
+    pc.Http.request = function(options) {
+      // Only affect .ply or 'gsplat' asset
+      if (options && options.url && (options.url.endsWith('.ply') || options.responseType === 'gsplat')) {
+        options.responseType = 'arraybuffer';
+      }
+      return origRequest.call(this, options);
+    };
+  }
+
   // 7. Asset loading (progress bar)
   const assets = {
     model: new pc.Asset('gsplat', 'gsplat', { url: plyUrl }),