; (function (Cesium) {
  checkSkyScenery(Cesium);
  function upraiseModel(primitiveArr, option) {
    var defaultParam = {
      time: 10,
      height: 10,
      defaultHeight: 0
    }
    var options = defaultParam;
    if (option) {
      if (typeof option == 'object') {
        options = Object.assign(defaultParam, option);
      }
    }
    var everyH = options.height / (options.time * 1000 / 10);
    var index = 0;
    var xh = setInterval(function () {
      primitiveArr.map(function (item) {
        // // var t = (6378137 + everyH * index + item.geometryInstances.geometry._height) / (6378137 + item.geometryInstances.geometry._height);
        var t = (6378137 + everyH * index + options.defaultHeight) / (6378137 + options.defaultHeight);
        item.modelMatrix = Cesium.Matrix4.fromScale(new Cesium.Cartesian3(t, t, t));

        // const translation = Cesium.Matrix4.fromTranslation(new Cesium.Cartesian3(everyH * index, 0,0))
        // Cesium.Matrix4.multiply(item.modelMatrix, translation, item.modelMatrix)
      })
      index += 1;
      if (index > options.time * 100) {
        clearInterval(xh);
      }
    }, 10);
    return xh;
  }
  function destoryUpraise(interval) {
    clearInterval(interval);
  }
  Cesium.upraiseModel = upraiseModel;
  Cesium.destoryUpraise = destoryUpraise;
}(SkyScenery))