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

A React wrapper for MapboxGL-js and overlay API.

import _classCallCheck from "@babel/runtime/helpers/esm/classCallCheck";
import _createClass from "@babel/runtime/helpers/esm/createClass";
import _defineProperty from "@babel/runtime/helpers/esm/defineProperty";
import { equals } from '../math-utils';
import assert from '../assert';

var TransitionInterpolator =
/*#__PURE__*/
function () {
  function TransitionInterpolator() {
    _classCallCheck(this, TransitionInterpolator);

    _defineProperty(this, "propNames", []);
  }

  _createClass(TransitionInterpolator, [{
    key: "arePropsEqual",

    /**
     * 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
     */
    value: function arePropsEqual(currentProps, nextProps) {
      var _iteratorNormalCompletion = true;
      var _didIteratorError = false;
      var _iteratorError = undefined;

      try {
        for (var _iterator = (this.propNames || [])[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
          var key = _step.value;

          if (!equals(currentProps[key], nextProps[key])) {
            return false;
          }
        }
      } catch (err) {
        _didIteratorError = true;
        _iteratorError = err;
      } finally {
        try {
          if (!_iteratorNormalCompletion && _iterator["return"] != null) {
            _iterator["return"]();
          }
        } finally {
          if (_didIteratorError) {
            throw _iteratorError;
          }
        }
      }

      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`
     */

  }, {
    key: "initializeProps",
    value: function 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
     */

  }, {
    key: "interpolateProps",
    value: function interpolateProps(startProps, endProps, t) {
      assert(false, 'interpolateProps is not implemented');
    }
  }]);

  return TransitionInterpolator;
}();

export { TransitionInterpolator as default };
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