set zoom when the graphics will go out of visibe area

JulieBiju · ‎10-14-2015

Thank u for ur valuable time.

In the web app, Adding graphics in each 10 second time using timer .Now my requirement is, after pan/zoom if any one of the graphic will go out of our visible area then only I need to set the zoom. How can I do this. Actually I did this successfully in silverlight which is below. But confused to do in Javascript.

Silverlight coding below and the javascript also.

'------------------------------------set zoom when the graphics will go out of visibe area
        Dim selectedFeatureExtent As ESRI.ArcGIS.Client.Geometry.Envelope = mercator.FromGeographic(New MapPoint(Convert.ToDouble(gpsNMEASentence(4)), Convert.ToDouble(gpsNMEASentence(2)))).Extent
        Dim displayExtent As New ESRI.ArcGIS.Client.Geometry.Envelope(selectedFeatureExtent.XMin, selectedFeatureExtent.YMin, selectedFeatureExtent.XMax, selectedFeatureExtent.YMax)
    If ResolutionCount = 1 Then 'onlyonepoint
        Dispatcher.BeginInvoke(Sub() ZoomToResolution(MyMap, 0.350549302222, mercator.FromGeographic(New MapPoint(Convert.ToDouble(gpsNMEASentence(4)), Convert.ToDouble(gpsNMEASentence(2))))))
        ResolutionCount = 0
    ElseIf MyMap.Extent.Intersects(displayExtent) = False And Trim(TryCast(CmbFahrname.SelectedItem, comboloadclass).ename.ToString()) = "All Vehicles" Then
        Dim expandPercentage As Double = 400
        Dim selectedFeatureExtent1 As ESRI.ArcGIS.Client.Geometry.Envelope = graphicsLayer.FullExtent
        expandPercentage = 100
        Dim widthExpand As Double = selectedFeatureExtent1.Width * (expandPercentage / 100)
        Dim heightExpand As Double = selectedFeatureExtent1.Height * (expandPercentage / 100)
        Dim displayExtent1 As New ESRI.ArcGIS.Client.Geometry.Envelope(selectedFeatureExtent1.XMin - (widthExpand / 2), selectedFeatureExtent1.YMin - (heightExpand / 2), selectedFeatureExtent1.XMax + (widthExpand / 2), selectedFeatureExtent1.YMax + (heightExpand / 2))
        MyMap.ZoomTo(displayExtent1)
    ElseIf MyMap.Extent.Intersects(displayExtent) = False And Trim(TryCast(CmbFahrname.SelectedItem, comboloadclass).ename.ToString()) <> "All Vehicles" Then
        Dispatcher.BeginInvoke(Sub() ZoomToResolution(MyMap, MyMap.Resolution, mercator.FromGeographic(New MapPoint(Convert.ToDouble(gpsNMEASentence(4)), Convert.ToDouble(gpsNMEASentence(2))))))
    End If
    '------------------------------------

Javascript Below

<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">

<meta name="viewport" content="initial-scale=1, maximum-scale=1,user-scalable=no">
<title>Basemap Gallery - Bing Maps</title>

<link rel="stylesheet" href="http://js.arcgis.com/3.14/dijit/themes/claro/claro.css">
<link rel="stylesheet" href="http://js.arcgis.com/3.14/esri/css/esri.css">

<style type="text/css">
    html,
    body,
    #mapDiv {
      padding: 0;
      margin: 0;
      height: 100%;
      z-index: -1;
      -moz-border-radius: 4px;
      overflow: hidden;
    }

    .claro .dijitButtonText {
      color: #03c;
      font-family: Arial, Helvetica, sans-serif font-weight: bold;
    }

    .claro td.dijitMenuItemLabel {
      color: #03c;
      font-family: Arial, Helvetica, sans-serif font-weight: 500;
    }

    .auto-style1 {}

    .auto-style2 {
      height: 20px;
    }

    .auto-style3 {
      height: 20px;
    }

    .auto-style6 {
      height: 2%;
      width: 279px;
    }

    .auto-style7 {
      width: 279px;
    }

    #TxtAltareeqEng {
      width: 55px;
    }

    #TxtAltareeqEng0 {
      width: 55px;
    }
</style>

<script>
      var dojoConfig = {
          parseOnLoad: false,
          async: true,
          tlmSiblingOfDojo: false,
          packages: [{
              name: "ncam",
              location: location.pathname.replace(/\/[^/]+$/, '') + "/ncam"
          }]
      };
</script>

<script type="text/javascript" src="http://js.arcgis.com/3.14/"></script>
<script type="text/javascript">
      window.onerror = function (msg, url, linenumber) {
          alert('Error message: ' + msg + '\nURL: ' + url + '\nLine Number: ' + linenumber);
          return true;
      }
      var map, basemapGallery, loading;
      require([
          "esri/map",
          "esri/graphic",
          "esri/layers/ArcGISDynamicMapServiceLayer",
          "esri/layers/GraphicsLayer",
          "esri/geometry/Extent",
          "esri/geometry/Point",
          "esri/geometry/Polyline",
          "esri/SpatialReference",
          "esri/symbols/PictureMarkerSymbol",
          "esri/symbols/SimpleLineSymbol",
          "esri/dijit/Popup",
          "dojo/dom-construct",
          "esri/dijit/PopupTemplate",
          "esri/dijit/Basemap",
          "esri/dijit/BasemapGallery",
          "esri/dijit/BasemapLayer",
          "esri/graphicsUtils",
          "esri/domUtils",
          "dojo/_base/array",
          "dojo/parser",
          "dojo/dom",
          "dojo/_base/lang",
          "dojo/dom-style",
          "dijit/MenuItem",
          "dijit/registry",
          "ncam/DirectionalLineSymbol",
          "dijit/Menu",
          "dijit/layout/ContentPane",
          "dijit/form/Button",
          "dijit/form/RadioButton",
          "dijit/form/DropDownButton",
          "dojo/domReady!"
      ],
        function (
          Map,
          Graphic,
          ArcGISDynamicMapServiceLayer,
          GraphicsLayer,
          Extent,
          Point,
          Polyline,
          SpatialReference,
          PictureMarkerSymbol,
          SimpleLineSymbol,
          Popup,
          domConstruct,
          PopupTemplate,
          Basemap,
          BasemapGallery,
          BasemapLayer,
          graphicsUtils,
          domUtils,
          array,
          parser,
          dom,
          lang,
          domStyle,
          MenuItem,
          registry,
          DirectionalLineSymbol
        ) {
            parser.parse();
            var TareeqENG, TareeqARB;
            var graphicsLayer;
            var clock;
            var AltareeqArb, AltareeqEng;
            loading = dom.byId("loadingImg"); //loading image. id
            var popup = new Popup({
                highlight: false
            }, domConstruct.create("div"));
            map = new Map("mapDiv", {
                center: [6.389, 36.054],
                zoom: 4,
                basemap: 'topo',
                autoResize: false,
                infoWindow: popup
            });
            map.on("update-start", showLoading);
            map.on("update-end", hideLoading);
            map.on('load', function () {
                createBasemapGallery();
            });
            registry.byId("radioOne").on("change", function (isChecked) {
                if (isChecked) {
                    registry.byId("LnkLastPosition").set("label", "LastPosition");
                    registry.byId("LnkTracking").set("label", "Tracking");
                }
            }, true);
            registry.byId("radioTwo").on("change", function (isChecked) {
                if (isChecked) {
                    registry.byId("LnkLastPosition").set("label", "الموقف الأخير");
                    registry.byId("LnkTracking").set("label", "التتبع");
                }
            }, true);
            //registry.byId("LnkLastPosition").on("click", LastPosClick);
            //registry.byId("LnkTracking").on("click", LastPosClick);
            clock = setInterval(LastPosClick, 10000);
            function showLoading() {
                domStyle.set(registry.byId("dropdownButton").domNode, "display", "none");
                domUtils.show(loading);
                map.disableMapNavigation();
                map.hideZoomSlider();
            }
            function hideLoading(error) {
                domStyle.set(registry.byId("dropdownButton").domNode, "display", "");
                domUtils.hide(loading);
                map.enableMapNavigation();
                map.showZoomSlider();
            }
            function createBasemapGallery() {
                AltareeqEng = "http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Demographics/ESRI_Population_World/MapSer...";
                AltareeqArb = "http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Demographics/ESRI_Census_USA/MapServer";
                //Manually create a list of basemaps to display
                var basemaps = [];
                TareeqENG = new Basemap({
                    layers: [new ArcGISDynamicMapServiceLayer(AltareeqEng)],
                    id: "TareeqENG",
                    title: "Al-Tareeq(ENG)"
                });
                basemaps.push(TareeqENG);
                TareeqARB = new Basemap({
                    layers: [new ArcGISDynamicMapServiceLayer(AltareeqArb)],
                    id: "TareeqARB",
                    title: "Al-Tareeq(AR)"
                });
                basemaps.push(TareeqARB);
                BingMapsRoad = new Basemap({
                    layers: [new BasemapLayer({
                        type: "BingMapsRoad"
                    })],
                    id: "bmRoad",
                    title: "BingMaps-Road"
                });
                basemaps.push(BingMapsRoad);
                BingMapsAerial = new Basemap({
                    layers: [new BasemapLayer({
                        type: "BingMapsAerial"
                    })],
                    id: "bmAerial",
                    title: "BingMaps-Aerial"
                });
                basemaps.push(BingMapsAerial);
                BingMapsHybrid = new Basemap({
                    layers: [new BasemapLayer({
                        type: "BingMapsHybrid"
                    })],
                    id: "bmHybrid",
                    title: "BingMaps-Aerial-Labels"
                });
                basemaps.push(BingMapsHybrid);
                basemapGallery = new BasemapGallery({
                    showArcGISBasemaps: false,
                    basemaps: basemaps,
                    bingMapsKey: "ApQMgAf0l5kH5_mfhDmDX1q9DOa1eqAw15N9knkX4sj1kbAoOYzJMNCln6w5t3bs",
                    map: map
                });
                basemapGallery.startup();
                graphicsLayer = new GraphicsLayer();
                map.addLayer(graphicsLayer);
                graphicsLayer.on("mouse-over", function (event) {
                    var graphic = event.graphic;
                    map.infoWindow.highlight = false;
                    map.infoWindow.setFeatures([graphic]);
                    map.infoWindow.show(event.screenPoint);
                });
                graphicsLayer.on("mouse-out", function () {
                    map.infoWindow.highlight = false;
                    map.infoWindow.hide();
                });
                //BasemapGallery.startup isn't needed because we aren't using the default basemap, instead
                //we are going to create a custom user interface to display the basemaps, in this case a menu.
                array.forEach(basemapGallery.basemaps, function (basemap) {
                    //Add a menu item for each basemap, when the menu items are selected
                    registry.byId("bingMenu").addChild(new MenuItem({
                        label: basemap.title,
                        onClick: lang.hitch(this, function () {
                            this.basemapGallery.select(basemap.id);
                        })
                    }));
                });
                /*Select that basemap that you want to be initially displayed*/
                basemapGallery.select(TareeqENG.id);
            }
            function LastPosClick() {
                map.infoWindow.hide();
                var colourstyle = "images/sphere-blue-dark-16x16.png"
                var Status = "status";
                var procname = "procname";
                var location = "location";
                var Driver = "Drv";
                var strhotspot = "strhotspot";
                var geomPoint1 = new Point(58.46236, 23.61581);
                var geomPoint2 = new Point(59.46236, 23.61581);
                var geomPoint3 = new Point(60.43362666666, 23.583081666666);
                var polyline = new Polyline(new SpatialReference(4326));
                polyline.addPath([geomPoint1, geomPoint2, geomPoint3]);
                var symbol = new PictureMarkerSymbol({
                    "url": colourstyle,
                    "height": 16,
                    "width": 16,
                    "type": "esriPMS"
                });
                //add a basic polyline
                var basicOptions = {
                    style: SimpleLineSymbol.STYLE_SOLID,
                    color: new dojo.Color([0, 0, 0]),
                    width: 2,
                    directionScale: 0.8,
                    directionStyle: "arrow3",
                    directionPixelBuffer: 80
                };
                var basicSymbol = new DirectionalLineSymbol(basicOptions);
                var popupTemplate = new PopupTemplate();
                popupTemplate.content = strhotspot;
                var pointGraphic = new Graphic(geomPoint1, symbol);
                var pointGraphic2 = new Graphic(geomPoint2, symbol);
                var pointGraphic3 = new Graphic(geomPoint3, symbol);
                var lineGraphic = new Graphic(polyline, basicSymbol);
                pointGraphic.setInfoTemplate(popupTemplate);
                pointGraphic2.setInfoTemplate(popupTemplate);
                pointGraphic3.setInfoTemplate(popupTemplate);
                graphicsLayer.add(pointGraphic);
                graphicsLayer.add(pointGraphic2);
                graphicsLayer.add(pointGraphic3);
                graphicsLayer.add(lineGraphic);
                setextent();
                var DivesriLogoImage = dom.byId('DivesriLogoImage');
                var mapDiv = dom.byId('mapDiv');
                mapDiv.style.visibility = "visible";
                DivesriLogoImage.style.visibility = "hidden";
            }
            function setextent() {
                var gextent = graphicsUtils.graphicsExtent(graphicsLayer.graphics).expand(1.2);
                map.setExtent(gextent);
            }
        });
</script>
</head>

<body class="claro">
<form id="form1" >
    <div style="width: 100%; height: 100%">
      <table id="Tablecontrols0" style="font-size: 15px; z-index: 101; background-color: #5B748B; width: 100%; height: 100%;">
        <tr style="font-family: Times New Roman">
          <td style="border-style: none; background-color: #496277; " valign="top" class="auto-style6">
            <input type="radio" data-dojo-type="dijit/form/RadioButton" name="uilanguage" id="radioOne" checked value="English"/><label for="radioOne">English</label><br />
            <input type="radio" data-dojo-type="dijit/form/RadioButton" name="uilanguage" id="radioTwo" value="العربية"/><label for="radioTwo">العربية</label>
          </td>
          <td align="left" style="border-style: none; background-color: #496277; height: 2%;" valign="top" class="auto-style3">
          </td>
        </tr>
        <tr style="font-family: Times New Roman">
          <td style="border-style: none;" valign="top" bgcolor="#496277" class="auto-style7">
            <table id="Tablecontrols" style="border-color: #F2F0EE; font-size: 15px; z-index: 101;
            background-color: #496277; width:auto; height: 274px; font-family: verdana; color: tomato; font-weight: bold; border-top-style: none;" align="left">
              <tr style="font-family: Times New Roman">
                <td rowspan="1" valign="top" height="10px" class="auto-style1">
                </td>
                <td rowspan="1" style="border-style: none;" valign="top" height="10px">
                </td>
              </tr>
              <tr style="font-family: Times New Roman">
                <td rowspan="1" style="font-weight: bold; " valign="top" height="10px" class="auto-style1">
                </td>
                <td rowspan="1" style="border-style: none;" valign="top" height="10px">
                </td>
              </tr>
              <tr style="font-family: Times New Roman">
                <td style="font-weight: bold; " valign="top" height="10" class="auto-style1" colspan="2">
                </td>
              </tr>
              <tr style="font-family: Times New Roman">
                <td style="font-weight: bold; text-align: center; " valign="top" class="auto-style2">
                  <button dojotype="dijit/form/Button" id="LnkLastPosition" style="font-family: Arial; font-size: x-small; font-weight: normal">
                    Last Position</button>
                </td>
                <td style="border-style: none; text-align: center;" valign="top" class="auto-style3">
                  <button dojotype="dijit/form/Button" id="LnkTracking" style="font-family: Arial; font-size: x-small; font-weight: normal">
                    Tracking</button>
                </td>
              </tr>
              <tr style="font-family: Times New Roman">
                <td colspan="2" rowspan="1" style="border-top: 2px solid #547289; border-bottom: 2px solid #547289; font-weight: bold; position: static;
                    height: 100%; text-align: left; width: 30%; border-left-width: 2px; border-right-width: 2px;" valign="top" align="left">
                  <div id="Something"></div>
                  <div style="width: 300px; height: 356px; overflow: scroll"></div>
                </td>
              </tr>
            </table>
          </td>
          <td style="border-style: none; background-color: white; width: 100%; height:100%;" valign="top" id="td11">
            <div id="mapDiv" dojotype="dijit/layout/ContentPane" region="center" style="border:1px solid #000; visibility: visible; height: 100%;">
              <img id="loadingImg" src="images/loading.gif"
                   style="position:absolute; right:512px; top:277px; z-index:100; width: 40px; height: 40px;" />
              <div style="position:absolute; right:50px; top:100px; z-Index:99;">
                <button id="dropdownButton" label="Basemaps" data-dojo-type="dijit/form/DropDownButton" style="display: none;">
                  <div data-dojo-type="dijit/Menu" id="bingMenu">
                    
                  </div>
                </button>
              </div>
            </div>
            <div id="DivesriLogoImage"
                 style="background-color: #FFFFFF; width: 80%; height:99.8%; visibility: hidden; position: absolute; top: 72px;" align="center">
            </div>
          </td>
        </tr>
      </table>
    </div>
</form>
</body>

</html>

TracySchloss · ‎10-14-2015

What if you check the extent of the graphics you've added before you change the extent? Then you could only set the extent if needed.

function setextent() {

var gextent = graphicsUtils.graphicsExtent(graphicsLayer.graphics).expand(1.2);

var ext = map.extent;

if (!ext.contains (gextent)) {

map.setExtent(gextent);

}

View solution in original post

TracySchloss · ‎10-14-2015