create-expo-cljs-app/template/node_modules/@egjs/hammerjs/src/recognizers/rotate.js

Create a react native application with Expo and Shadow-CLJS!

import AttrRecognizer from './attribute';
import { TOUCH_ACTION_NONE } from '../touchactionjs/touchaction-Consts';
import { STATE_BEGAN } from '../recognizerjs/recognizer-consts';

/**
 * @private
 * Rotate
 * Recognized when two or more pointer are moving in a circular motion.
 * @constructor
 * @extends AttrRecognizer
 */
export default class RotateRecognizer extends AttrRecognizer {
  constructor(options = {}) {
    super( {
      event: 'rotate',
      threshold: 0,
      pointers: 2,
      ...options,
    });
  }

  getTouchAction() {
    return [TOUCH_ACTION_NONE];
  }

  attrTest(input) {
    return super.attrTest(input) &&
        (Math.abs(input.rotation) > this.options.threshold || this.state & STATE_BEGAN);
  }
}