Save/Load camera/controls target

gistfile1.txt

/**
 * Use the Web Storage API to save camera position and target between page refreshes.
 *
 * @param {Object} options
 * @param {*} options.camera - The camera you want to store the position of.
 * @param {*} [options.controls] - A controls object with a `.target` property.
 * @param {String} [options.name="main"] - An optional label. Useful if you want to store multiple cameras.
 * @param {Boolean} [options.session=true] - Indicates if you want to use local or session storage.
 *  See https://developer.mozilla.org/en-US/docs/Web/API/Storage
 */
export default ({
  camera,
  controls,
  name = 'main',
  session = true
}) => {
  const store = session ? window.sessionStorage : window.localStorage
  const positionKey = `three-camera-${name}-position`
  const targetKey = `three-camera-${name}-target`
  const positionValue = store.getItem(positionKey)
  const targetValue = store.getItem(targetKey)
​
  if (positionValue) {
    camera.position.copy(JSON.parse(positionValue))
  }

  if (controls && targetValue) {
    controls.target.copy(JSON.parse(targetValue))
    controls.update()
  }

  window.addEventListener('pagehide', () => {
    store.setItem(positionKey, JSON.stringify(camera.position))

    if (controls) {
      store.setItem(targetKey, JSON.stringify(controls.target))
    }
  })
}