scans and ref image

packages/viewer/src/hooks/use-asset-url.ts

@@ -0,0 +1,23 @@
+import { loadAssetUrl } from '@pascal-app/core'
+import { useEffect, useState } from 'react'
+
+/**
+ * Resolves an asset:// URL to a blob URL for use with Three.js loaders.
+ * Returns null while loading or if resolution fails.
+ */
+export function useAssetUrl(url: string): string | null {
+  const [resolved, setResolved] = useState<string | null>(null)
+
+  useEffect(() => {
+    let cancelled = false
+    setResolved(null)
+    loadAssetUrl(url).then((result) => {
+      if (!cancelled) setResolved(result)
+    })
+    return () => {
+      cancelled = true
+    }
+  }, [url])
+
+  return resolved
+}