text: import _ol_extent_ from '../../extent.js';
  var _ol_geom_flat_center_ = {};
  
  
  /**
   * @param {Array.<number>} flatCoordinates Flat coordinates.
   * @param {number} offset Offset.
   * @param {Array.<Array.<number>>} endss Endss.
   * @param {number} stride Stride.
   * @return {Array.<number>} Flat centers.
   */
  _ol_geom_flat_center_.linearRingss = function(flatCoordinates, offset, endss, stride) {
    var flatCenters = [];
    var i, ii;
    var extent = _ol_extent_.createEmpty();
    for (i = 0, ii = endss.length; i < ii; ++i) {
      var ends = endss[i];
      extent = _ol_extent_.createOrUpdateFromFlatCoordinates(
          flatCoordinates, offset, ends[0], stride);
      flatCenters.push((extent[0] + extent[2]) / 2, (extent[1] + extent[3]) / 2);
      offset = ends[ends.length - 1];
    }
    return flatCenters;
  };
  export default _ol_geom_flat_center_;
  