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HTML

              
                <html>

<head>
  <meta charset="utf-8">
  <meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no">
  <title>Sketch temporary geometries - 4.9</title>

     <link rel="stylesheet" href="https://js.arcgis.com/4.20/esri/themes/light/main.css" />
    <script src="https://js.arcgis.com/next/"></script>

  <style>
    html,
    body,
    #viewDiv {
      padding: 0;
      margin: 0;
      height: 100%;
      width: 100%;
      font-family: verdana;
    }

    #topbar {
      background: #fff;
      position: absolute;
      top: 15px;
      right: 15px;
      padding: 10px;
    }

    .action-button {
      font-size: 16px;
      background-color: transparent;
      border: 1px solid #D3D3D3;
      color: #6e6e6e;
      height: 32px;
      width: 32px;
      text-align: center;
      box-shadow: 0 0 1px rgba(0, 0, 0, 0.3);
    }

    .action-button:hover,
    .action-button:focus {
      background: #0079c1;
      color: #e4e4e4;
    }

    .active {
      background: #0079c1;
      color: #e4e4e4;
    }

  </style>

  <script>
    require([
      "esri/views/MapView",
      "esri/Map",
      "esri/widgets/Sketch/SketchViewModel",
      "esri/Graphic",
      "esri/layers/GraphicsLayer",
     "esri/layers/WMTSLayer",
      "esri/geometry/Extent"
    ], function (
      MapView, Map,
      SketchViewModel, Graphic, GraphicsLayer, WMTSLayer, Extent, 
    ) {

      let editGraphic;

      // GraphicsLayer to hold graphics created via sketch view model
      const graphicsLayer = new GraphicsLayer({
        id: "tempGraphics"
      });
      
    const wmtsLayer = new WMTSLayer({
      url: 'https://wmts.geo.admin.ch/EPSG/2056/1.0.0/WMTSCapabilities.xml',
      activeLayer: {
        id: 'ch.swisstopo.swissimage',
      },
      id: 'ch.swisstopo.swissimage',
      visible: true,
    });
  
      const map = new Map({
        layers: [wmtsLayer,
          graphicsLayer,
        ]
      });

      const view = new MapView({
        container: "viewDiv",
        map: map,
        zoom: 20,
        extent: new Extent({
      xmin: 2468999,
      ymin: 1082500,
      xmax: 2812500,
      ymax: 1276999,
      spatialReference: {
        wkid: 2056,
      },
    }),
      });

      const pointSymbol = {
        type: "simple-marker", // autocasts as new SimpleMarkerSymbol()
        style: "square",
        color: "#8A2BE2",
        size: "16px",
        outline: { // autocasts as new SimpleLineSymbol()
          color: [255, 255, 255],
          width: 3
        }
      };

      const polylineSymbol = {
        type: "simple-line", // autocasts as new SimpleLineSymbol()
        color: "#8A2BE2",
        width: "4",
        style: "dash"
      };

      const polygonSymbol = {
        type: "simple-fill", // autocasts as new SimpleFillSymbol()
        color: "rgba(138,43,226, 0.8)",
        style: "solid",
        outline: {
          color: "white",
          width: 1
        }
      };

      view.when(function () {
        // create a new sketch view model
        const sketchViewModel = new SketchViewModel({
          view,
          layer: graphicsLayer,
          pointSymbol,
          polylineSymbol,
          polygonSymbol
        });

        setUpClickHandler();

        // Listen to create-complete event to add a newly created graphic to view
        sketchViewModel.on("create-complete", addGraphic);

        // Listen the sketchViewModel's update-complete and update-cancel events
        sketchViewModel.on("update-complete", updateGraphic);
        sketchViewModel.on("update-cancel", updateGraphic);

        // called when sketchViewModel's create-complete event is fired.
        function addGraphic(event) {
          // Create a new graphic and set its geometry to
          // `create-complete` event geometry.
          const graphic = new Graphic({
            geometry: event.geometry,
            symbol: sketchViewModel.graphic.symbol
          });
          graphicsLayer.add(graphic);
        }

        // Runs when sketchViewModel's update-complete or update-cancel
        // events are fired.
        function updateGraphic(event) {
          // Create a new graphic and set its geometry event.geometry
          var graphic = new Graphic({
            geometry: event.geometry,
            symbol: editGraphic.symbol
          });
          graphicsLayer.add(graphic);

          // set the editGraphic to null update is complete or cancelled.
          editGraphic = null;
        }

        // set up logic to handle geometry update and reflect the update on "graphicsLayer"
        function setUpClickHandler() {
          view.on("click", function (event) {
            view.hitTest(event).then(function (response) {
              var results = response.results;
              if (results.length > 0) {
                for (var i = 0; i < results.length; i++) {
                  // Check if we're already editing a graphic
                  if (!editGraphic && results[i].graphic.layer.id === "tempGraphics") {
                    // Save a reference to the graphic we intend to update
                    editGraphic = results[i].graphic;
    
                    // Remove the graphic from the GraphicsLayer
                    // Sketch will handle displaying the graphic while being updated
                    graphicsLayer.remove(editGraphic);
                    sketchViewModel.update(editGraphic);
                    break;
                  }
                }
              }
            });
          });
        }

        // activate the sketch to create a point
        var drawPointButton = document.getElementById("pointButton");
        drawPointButton.onclick = function () {
          // set the sketch to create a point geometry
          sketchViewModel.create("point");
          setActiveButton(this);
        };

        // activate the sketch to create a polyline
        var drawLineButton = document.getElementById("polylineButton");
        drawLineButton.onclick = function () {
          // set the sketch to create a polyline geometry
          sketchViewModel.create("polyline");
          setActiveButton(this);
        };

        // activate the sketch to create a polygon
        var drawPolygonButton = document.getElementById("polygonButton");
        drawPolygonButton.onclick = function () {
          // set the sketch to create a polygon geometry
          sketchViewModel.create("polygon");
          setActiveButton(this);
        };

        // activate the sketch to create a rectangle
        var drawRectangleButton = document.getElementById(
          "rectangleButton");
        drawRectangleButton.onclick = function () {
          // set the sketch to create a polygon geometry
          sketchViewModel.create("rectangle");
          setActiveButton(this);
        };

        // activate the sketch to create a circle
        var drawCircleButton = document.getElementById("circleButton");
        drawCircleButton.onclick = function () {
          // set the sketch to create a polygon geometry
          sketchViewModel.create("circle");
          setActiveButton(this);
        };

        // reset button
        document.getElementById("resetBtn").onclick = function () {
          sketchViewModel.reset();
          graphicsLayer.removeAll();
          setActiveButton();
        };

        function setActiveButton(selectedButton) {
          // focus the view to activate keyboard shortcuts for sketching
          view.focus();
          var elements = document.getElementsByClassName("active");
          for (var i = 0; i < elements.length; i++) {
            elements[i].classList.remove("active");
          }
          if (selectedButton) {
            selectedButton.classList.add("active");
          }
        }
      });
    });

  </script>
</head>

<body>
  <div id="viewDiv">
    <div id="topbar">
      <button class="action-button esri-icon-blank-map-pin" id="pointButton"
        type="button" title="Draw point"></button>
      <button class="action-button esri-icon-polyline" id="polylineButton" type="button"
        title="Draw polyline"></button>
      <button class="action-button esri-icon-polygon" id="polygonButton" type="button"
        title="Draw polygon"></button>
      <button class="action-button esri-icon-checkbox-unchecked" id="rectangleButton"
        type="button" title="Draw rectangle"></button>
      <button class="action-button esri-icon-radio-unchecked" id="circleButton"
        type="button" title="Draw circle"></button>
      <button class="action-button esri-icon-trash" id="resetBtn" type="button"
        title="Clear graphics"></button>
    </div>
  </div>
</body>

</html>
              
            
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