const configTool = {
  time: 5,
  setMapFly(res) {
    var that = this;
    const alt = res.alt == 0 ? 100 : res.alt;
    //设置初始视图位置
    Viewer.camera.flyTo({
      // fromDegrees()方法，将经纬度和高程转换为世界坐标
      destination: Cesium.Cartesian3.fromDegrees(res.lon, res.lat, alt),
      orientation: {
        // 方向
        heading: res.heading,
        // 视角
        pitch: res.pitch,
        // 倾斜角度
        roll: res.roll,
        // 设置飞行持续时间，默认会根据距离来计算
        duration: that.time
      }
    });
  },
  getNewDateTime() {
    return new Date().getTime();
  },
  getEndDateTime() {
    return this.getNewDateTime() + 3600 * 2;
  },
  //点击获取经纬度
  getViewerPosition(res) {
    const cartesain = Viewer.camera.pickEllipsoid(res.position);
    var cartographic = Cesium.Cartographic.fromCartesian(cartesain);
    return {
      lon: parseFloat(Cesium.Math.toDegrees(cartographic.longitude)).toFixed(6),
      lat: parseFloat(Cesium.Math.toDegrees(cartographic.latitude)).toFixed(6),
      alt: cartographic.height,
      heading: Viewer.scene.camera.heading,
      pitch: Viewer.scene.camera.pitch,
      roll: Viewer.scene.camera.roll
    };
  },
  //获取当前视角信息
  getViewerCamera() {
    var position = Viewer.scene.camera.positionCartographic;
    return {
      lon: Cesium.Math.toDegrees(position.longitude).toFixed(6),
      lat: Cesium.Math.toDegrees(position.latitude).toFixed(6),
      alt: position.height.toFixed(6),
      heading: Cesium.Math.toDegrees(Viewer.scene.camera.heading),
      pitch: Cesium.Math.toDegrees(Viewer.scene.camera.pitch),
      roll: Cesium.Math.toDegrees(Viewer.scene.camera.roll)
    };
  },
  getTreeDataCheck(res, std) {
    for (var i in res) {
      if (res[i].children) {
        this.getTreeDataCheck(res[i].children, std);
      } else {
        if (res[i].checked) {
          std.push(res[i].id);
        }
      }
    }
    return std;
  },
  generateID() {
    return "xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx".replace(
      /[xy]/g,
      function (c) {
        var r = (Math.random() * 16) | 0,
          v = c === "x" ? r : (r & 0x3) | 0x8;
        return v.toString(16);
      }
    );
  },
  saveToJson(data, res) {
    let content = JSON.stringify(data);
    let blob = new Blob([content], { type: "" });
    var reader = new FileReader();
    reader.onloadend = () => {
      let url = reader.result;
      let triggerDownload = document.createElement("a");
      triggerDownload.download = (res) + ".json";
      triggerDownload.href = url;
      triggerDownload.click();
    };
    reader.readAsDataURL(blob);
  }
};
export default configTool;