// But since r128, it's modular. Let's try to load it dynamically if needed or include a direct link. // For a single HTML file, the easiest way is often to include the UMD version of OrbitControls. // For now, I'll code as if it's available on THREE.OrbitControls from the main three.min.js or a separate script tag. // After checking, three.min.js (r128) does NOT include OrbitControls. We need to load it. // Let's add it via a script tag.