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HTML Settings

Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

            
              <html>

<head>
  <meta charset="utf-8">
  <meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no">
  <!--
  ArcGIS API for JavaScript, https://js.arcgis.com
  For more information about the elevation-query-points sample, read the original sample description at developers.arcgis.com.
  https://developers.arcgis.com/javascript/latest/sample-code/elevation-query-points/index.html
  -->
<title>Query Elevation (points) - 4.10</title>
  <style>
    html,
    body,
    #viewDiv {
      padding: 0;
      margin: 0;
      height: 100%;
      width: 100%;
    }

    #paneDiv {
      position: absolute;
      top: 12px;
      left: 62px;
      width: 80%;
      padding: 0 12px 0 12px;
      background-color: rgba(255, 255, 255, 0.85);
      border: 1px solid white;
      color: black;
    }

    #resultsDiv {
      font-size: 1.2em;
      text-align: center;
      border-bottom: 1px solid gray;
      padding: 10px 0px;
    }

    #activeElevationLayerDiv {
      margin: 10px 0;
    }

    ul #red {
      color: rgb(150, 26, 15);
    }

    ul #green {
      color: rgb(21, 150, 15);
    }

    ul span {
      color: black;
    }

    ul {
      margin: 0 0 10px 0;
    }

  </style>

  <link rel="stylesheet" href="https://js.arcgis.com/4.10/esri/css/main.css">
  <script src="https://js.arcgis.com/4.10/"></script>

  <script>
    require([
      "esri/Map",
      "esri/views/SceneView",
      "esri/Graphic",
      "esri/geometry/Polyline",
      "esri/layers/ElevationLayer",
      "esri/core/promiseUtils"
    ], function (
      Map, SceneView, Graphic, Polyline, ElevationLayer,
      promiseUtils
    ) {

      // Create elevation layers
      var beforeLandslideUrl =
        "https://sampleserver6.arcgisonline.com/arcgis/rest/services/OsoLandslide/OsoLandslide_Before_3DTerrain/ImageServer/";
      var afterLandslideUrl =
        "https://sampleserver6.arcgisonline.com/arcgis/rest/services/OsoLandslide/OsoLandslide_After_3DTerrain/ImageServer/";

      var beforeLandslideLayer = new ElevationLayer({
        url: beforeLandslideUrl
      });
      var afterLandslideLayer = new ElevationLayer({
        url: afterLandslideUrl
      });

      // Create Map and View
      var map = new Map({
        basemap: "satellite",
        ground: {
          layers: [beforeLandslideLayer, afterLandslideLayer]
        }
      });

      var view = new SceneView({
        container: "viewDiv",
        map: map,
        camera: {
          // initial view:
          heading: 332.8,
          tilt: 65.5,
          position: {
            x: -13563643,
            y: 6153016,
            z: 577,
            spatialReference: {
              wkid: 3857
            }
          }
        }
      });

      // Initialize symbols
      var afterPointSymbol = {
        type: "point-3d", // autocasts as new PointSymbol3D()
        symbolLayers: [{
          type: "object", // autocasts as new ObjectSymbol3DLayer()
          material: {
            color: [150, 26, 15]
          },
          resources: {
            primitive: "sphere"
          },
          width: 8
        }]
      };

      var beforePointSymbol = {
        type: "point-3d", // autocasts as new PointSymbol3D()
        symbolLayers: [{
          type: "object", // autocasts as new ObjectSymbol3DLayer()
          material: {
            color: [21, 150, 15]
          },
          resources: {
            primitive: "sphere"
          },
          width: 8
        }]
      };

      var lineSymbol = {
        type: "line-3d", // autocasts as new LineSymbol3D()
        symbolLayers: [{
          type: "line", // autocasts as new LineSymbol3DLayer()
          material: {
            color: [150, 26, 15]
          },
          size: 1
        }]
      };

      var resultsContainer = document.getElementById("resultsDiv");

      view.on("click", function (event) {
        resultsContainer.innerHTML = "Querying elevation...";

        // Query both elevation layers for the elevation at the clicked map position
        var position = event.mapPoint;
        var queryBeforeLandslide = beforeLandslideLayer.queryElevation(position);
        var queryAfterLandslide = afterLandslideLayer.queryElevation(position);

        // When both query promises resolve execute the following code
        promiseUtils.eachAlways([queryBeforeLandslide, queryAfterLandslide])
          .then(function (results) {
            var posBeforeLandslide = results[0].value.geometry;
            var posAfterLandslide = results[1].value.geometry;

            // Clear graphics from previous result (if applicable)
            view.graphics.removeAll();

            // Draw a point graphic for position before landslide
            view.graphics.add(new Graphic({
              geometry: posBeforeLandslide,
              symbol: beforePointSymbol
            }));

            // Draw a point graphic for position after landslide
            view.graphics.add(new Graphic({
              geometry: posAfterLandslide,
              symbol: afterPointSymbol
            }));

            // Draw a vertical line that illustrates the elevation difference
            var lineGeometry = new Polyline({
              spatialReference: posBeforeLandslide.spatialReference,
              hasZ: true
            });
            lineGeometry.addPath([posBeforeLandslide, posAfterLandslide]);
            view.graphics.add(new Graphic({
              geometry: lineGeometry,
              symbol: lineSymbol
            }));

            // Compute and display the difference in elevation
            var elevationDifference = Math.abs(posBeforeLandslide.z - posAfterLandslide.z);
            resultsContainer.innerHTML = "Elevation difference: " + elevationDifference.toFixed(
              2) + " m";
          })
          .catch(function (error) {
            resultsContainer.innerHTML = "Elevation query failed (" + error.message + ")";
          });
      });

      // When both elevation layers are set "visible", the surface is defined by the latter layer (afterLandslideLayer).
      // Thus we can toggle between "before" and "after" by toggling the visibility of afterLandslideLayer.
      document.getElementById("elevAfter").addEventListener("change", function (event) {
        afterLandslideLayer.visible = event.target.checked;
        beforeOrAfter = event.target.checked ? "after" : "before";
      });
    });

  </script>
</head>

<body>
  <div id="viewDiv"></div>
  <div id="paneDiv">
    <div id="resultsDiv">Click on the map to see the difference in elevation
      before and after the landslide.</div>
    <div id="activeElevationLayerDiv">
      Legend:
      <ul>
        <li id="green">
          <span>Surface point before landslide</span>
        </li>
        <li id="red">
          <span>Surface point after landslide</span>
        </li>
      </ul>
      <input type="checkbox" id="elevAfter" checked>
      <label for="elevAfter">Show surface after landslide</label>
    </div>
  </div>
</body>

</html>
            
          
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