xrfragment.xrf.env = function(v, opts){
  let { mesh, model, camera, scene, renderer, THREE} = opts
  let env = mesh.getObjectByName(v.string)
  env.material.map.mapping = THREE.EquirectangularReflectionMapping;
  scene.environment = env.material.map
  scene.texture = env.material.map
  renderer.toneMapping = THREE.ACESFilmicToneMapping;
  renderer.toneMappingExposure = 1;
  console.log(`   └ applied image '${v.string}' as environment map`)
}