contour-demo-hills.js

const hillsLayer = new FeatureLayer({
  url: "https://services2.arcgis.com/cFEFS0EWrhfDeVw9/arcgis/rest/services/HillsZurichDemo/FeatureServer",
  elevationInfo: {
    mode: "absolute-height",
    featureExpressionInfo: {
      expression: "Pow(Geometry($feature).Z, 1.2)"
    }
  },
  renderer: {
    type: "simple",
    symbol: {
      type: "point-3d",
      symbolLayers: [{
        type: "icon",
        resource: {
          primitive: "circle"
        },
        material: {
          color: [86, 72, 31]
        },
        size: "4px"
      }]
    }
  },
  labelingInfo: [{
    labelPlacement: "above-center",
    labelExpressionInfo: {
      expression: "$feature.NAME"
    },
    symbol: {
      type: "label-3d",
      symbolLayers: [{
        type: "text",
        material: {
          color: [86, 72, 31]
        },
        halo: {
          color: [244, 239, 227, 0.6],
          size: "3px"
        },
        font: {
          weight: "bold"
        },
        size: 10
      }],
      verticalOffset: {
        screenLength: 50,
        maxWorldLength: 1000,
        minWorldLength: 20
      },
      callout: {
        type: "line",
        size: "2px",
        color: [86, 72, 31]
      }
    }
  }]
});
webscene.add(hillsLayer);