controls for camera / guides / scans / levels

packages/viewer/src/systems/scan/scan-system.tsx

@@ -0,0 +1,18 @@
+import { sceneRegistry } from '@pascal-app/core'
+import { useEffect } from 'react'
+import useViewer from '../../store/use-viewer'
+
+export const ScanSystem = () => {
+  const showScans = useViewer((state) => state.showScans)
+
+  useEffect(() => {
+    const scans = sceneRegistry.byType.scan || new Set()
+    scans.forEach((scanId) => {
+      const node = sceneRegistry.nodes.get(scanId)
+      if (node) {
+        node.visible = showScans
+      }
+    })
+  }, [showScans])
+  return null;
+}