@mapbox/react-map-gl/dist/es6/utils/transition/transition-interpolator.js

A React wrapper for MapboxGL-js and overlay API.

import _defineProperty from "@babel/runtime/helpers/esm/defineProperty";
import { equals } from '../math-utils';
import assert from '../assert';
export default class TransitionInterpolator {
  constructor() {
    _defineProperty(this, "propNames", []);
  }

  /**
   * Checks if two sets of props need transition in between
   * @param currentProps {object} - a list of viewport props
   * @param nextProps {object} - a list of viewport props
   * @returns {bool} - true if two props are equivalent
   */
  arePropsEqual(currentProps, nextProps) {
    for (const key of this.propNames || []) {
      if (!equals(currentProps[key], nextProps[key])) {
        return false;
      }
    }

    return true;
  }
  /**
   * Called before transition starts to validate/pre-process start and end props
   * @param startProps {object} - a list of starting viewport props
   * @param endProps {object} - a list of target viewport props
   * @returns {Object} {start, end} - start and end props to be passed
   *   to `interpolateProps`
   */


  initializeProps(startProps, endProps) {
    return {
      start: startProps,
      end: endProps
    };
  }
  /**
   * Returns viewport props in transition
   * @param startProps {object} - a list of starting viewport props
   * @param endProps {object} - a list of target viewport props
   * @param t {number} - a time factor between [0, 1]
   * @returns {object} - a list of interpolated viewport props
   */


  interpolateProps(startProps, endProps, t) {
    assert(false, 'interpolateProps is not implemented');
  }

}
//# sourceMappingURL=transition-interpolator.js.map