const onlineterrains = function onlineterrainterrain() {
  viewer.terrainProvider = Cesium.createWorldTerrain({
    requestWaterMask: true, // required for water effects
    requestVertexNormals: true // required for terrain lighting
  });
};
const outlineterrainterrains = function outlineterrainterrain() {
  // 本地地形
  var terrainLayer = new Cesium.CesiumTerrainProvider({
    url: "http://data.mars3d.cn/terrain"
  });
  viewer.terrainProvider = terrainLayer;
};
const ArcGlsterrainterrains = function ArcGlsterrainterrain() {
  // 本地地形
  var terrainLayer = new Cesium.ArcGISTiledElevationTerrainProvider({
    url:
      "https://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer"
  });
  viewer.terrainProvider = terrainLayer;
};
const contourLines = function contourLine() {
  viewer.terrainProvider = Cesium.createWorldTerrain({
    requestWaterMask: true, // required for water effects
    requestVertexNormals: true // required for terrain lighting
  });
  let globe = viewer.scene.globe;
  let contourUniforms = {};
  // 使用等高线材质
  let material = Cesium.Material.fromType("ElevationContour");
  contourUniforms = material.uniforms;
  // 线宽2.0px
  contourUniforms.width = 2.0;
  // 高度间隔为150米
  contourUniforms.spacing = 150;
  contourUniforms.color = Cesium.Color.RED;
  // 设置材质
  globe.material = material;
};
const terrainExaggerations = function terrainExaggeration() {
  viewer.terrainProvider = Cesium.createWorldTerrain({
    requestWaterMask: true, // required for water effects
    requestVertexNormals: true // required for terrain lighting
  });
  // 地形夸张
  viewer.scene.globe.terrainExaggeration = 50.0;
};
const getclippens = function getclippen() {
  //左键绘制，右键结束
  drawClippings = new ClippingPlanes({
    viewer: viewer,
    color: "#fff"
  });
  drawClippings.StartClippingPlanes();
};
const unclippens = function unclippen() {
  drawClippings.unterrionclippingPlanes();
};
const terrainList = data => {
  let Vuemouunted = null;
  let bodydiv = null;
  let Vuedata = null;
  let Vuemethod = null;
  let importData = null;
  let refdata = null;
  switch (data.name) {
    case "在线地形":
      Vuemouunted =
        "\n" + data.interiormethod + "\n" + onlineterrains.toString();
      break;
    case "离线地形":
      Vuemouunted =
        "\n" + data.interiormethod + "\n" + outlineterrainterrains.toString();
      break;
    case "ArcGis地形":
      Vuemouunted =
        "\n" + data.interiormethod + "\n" + ArcGlsterrainterrains.toString();
      break;
    case "等高线":
      Vuemouunted = "\n" + data.interiormethod + "\n" + contourLines.toString();
      break;
    case "地形夸张":
      Vuemouunted =
        "\n" + data.interiormethod + "\n" + terrainExaggerations.toString();
      break;
    case "地形开挖":
      bodydiv = data.bodydiv;
      importData = data.importData;
      let methods = getclippens.toString() + "," + unclippens.toString();
      Vuemethod = methods.replace(/function/g, "\n");
      break;
  }
  return { bodydiv, Vuedata, importData, Vuemethod, Vuemouunted, refdata };
};
export { terrainList };