Latest Contributions by JasonTrinidad1

I am having an issue with updating a KmlLayer in MySceneView.Scene.Layers. This is constantly updated at less than 30fps. I have multiple threads (max of 4) calling this function, each has a unique ID. The contents of the kml changes, but the URI remains the same (each thread also has its own kml with different Uri). The problem I'm having is that my application is randomly crashing after running for about a minute, and it's not telling my why. It just says MyProgram has stopped working. Monitor.Enter(MySceneView.Scene.Layers); try {     var kmlLayer = new KmlLayer(sourceUri); //sourceUri is a local file     kmlLayer.ID = id;     kmlLayer.Opacity = _alpha;     kmlLayer.IsVisible = _visibility;     kmlLayer.InitializeAsync();     if (MySceneView.Scene.Layers[id] != null)          MySceneView.Scene.Layers.Remove(id);     MySceneView.Scene.Layers.Add(kmlLayer); } finally {     Monitor.Exit(MySceneView.Scene.Layers); } Also tried replacing the layer instead of removing it, but it also crashes if (MySceneView.Scene.Layers[id] == null)     MySceneView.Scene.Layers.Add(kmlLayer); else {     for (int i = MySceneView.Scene.Layers.Count - 1; i >= 0; i--)     {         if (MySceneView.Scene.Layers.ID == id)         {            MySceneView.Scene.Layers = kmlLayer; //I cant replace the layer using the id as an index, since it's read only using a string index         }     } } Any help would be appreciated ... View more

I have a piece of code that updates a KML overlay often. Some times, at random, my application crashes after replacing the KML layer from my Scene. I do not get an error message, not does it let me debug it, so I suspect is somewhere in the ArcGis code. Is this the correct way to update a KML layer? string id = objId + "Overlay"; System.IO.File.WriteAllText(_tempFilePath + @"\" + id + ".kml", kmlString); var sourceUri = new Uri(_tempFilePath + @"\" + id + ".kml"); //I receive KML as a string, so I save as a file to get an URI if (MySceneView.Scene.Layers[id] == null) //first time adding the layer   {      var kmlLayer = new KmlLayer(sourceUri);      kmlLayer.ID = id;      kmlLayer.Opacity = _alpha;      MySceneView.Scene.Layers.Add(kmlLayer);      return id;   }   else //Update the layer   {      for(int i = MySceneView.Scene.Layers.Count - 1; i >= 0; i--)//for each layer      {         if (MySceneView.Scene.Layers.ID == id) //find the matching ID         {            var kmlLayer = new KmlLayer(sourceUri);            kmlLayer.ID = id;            kmlLayer.Opacity = _alpha;               MySceneView.Scene.Layers = kmlLayer; //repalce the layer with the updated one            return id;         }      }   } return ""; ... View more

I have a function that constantly adds a new placemark graphic object with a PictureMarkerSymbol symbol, while deleting the previous one. When I create the first graphics object, the heading is correct. All the following placemarks have the angle of the first placemark ever created.I know the value of platformHeading changes, but the heading of my placemark stays constant. var graphicsOverlay = MySceneView.GraphicsOverlays["MyPlacemarkLayer"] as Esri.ArcGISRuntime.Controls.GraphicsOverlay;                 Graphic graphic = new Graphic(new MapPoint(lon, lat, alt,MySceneView.SpatialReference));    Esri.ArcGISRuntime.Symbology.PictureMarkerSymbol imgSym = new Esri.ArcGISRuntime.Symbology.PictureMarkerSymbol();  imgSym.SetSourceAsync(new Uri(iconHref));    imgSym.AngleAlignment = Esri.ArcGISRuntime.Symbology.MarkerAngleAlignment.Map; //Does this even do anything  imgSym.Angle = platformHeading + _mapRotation; //I get _mapRotation when I move the map                ret = graphic.GetHashCode().ToString();    graphic.Symbol = imgSym;  //graphic.Attributes["Heading"] = _mapRotation + _mapRotation; //This doesn't do anything    MySceneView.GraphicsOverlays["MyPlacemarkLayer"].Graphics.Add(graphic);    for (int i = 0; i < MySceneView.GraphicsOverlays["MyPlacemarkLayer"].Graphics.Count; i++)  {      if (MySceneView.GraphicsOverlays["MyPlacemarkLayer"].Graphics.GetHashCode().ToString() == oldId)      {          MySceneView.GraphicsOverlays["MyPlacemarkLayer"].Graphics.RemoveAt(i);          break;      }                     }  I try to rotate the placemark when I move the screen, but this does'nt do anything at all. private void MySceneView_CameraChanged(object sender, EventArgs e)  {          _mapRotation = MySceneView.GetCurrentViewpoint(ViewpointType.CenterAndScale).Rotation;          canvasBox.RenderTransform = new RotateTransform(360 - _mapRotation, canvasBox.Width / 2, canvasBox.Height / 2);            foreach (GraphicsOverlay gOverlay in MySceneView.GraphicsOverlays)          {              foreach (Graphic g in gOverlay.Graphics)              {                  g.Attributes["Heading"] = (double)g.Attributes["Heading"] + _mapRotation;              }          }  } In this example, I set my heading to be 45 and to increment by 5 every iteration. The placemark seems to get stuck at 45 forever. This is my WPF <Grid>  <Grid.Resources>    <esri:SimpleRenderer x:Key="MyRenderer">     <esri:SimpleRenderer.SceneProperties >      <esri:RendererSceneProperties         HeadingExpression="[Heading]"         PitchExpression="[Pitch]"         RollExpression="[Roll]" />     </esri:SimpleRenderer.SceneProperties>         <esri:SimpleRenderer.Symbol>      <esri:PictureMarkerSymbol AngleAlignment="Map" />     </esri:SimpleRenderer.Symbol>    </esri:SimpleRenderer>  </Grid.Resources>  <esri:SceneView x:Name="MySceneView" Visibility="Visible"  LayerLoaded="MySceneView_LayerLoaded" CameraChanged="MySceneView_CameraChanged" >    <esri:Scene>     <esri:Scene.Surface>      <esri:ServiceElevationSource ServiceUri="http://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer"  IsEnabled="True" />     </esri:Scene.Surface>     <esri:ArcGISTiledMapServiceLayer ID="BaseScene"       ServiceUri="http://services.arcgisonline.com/arcgis/rest/services/World_Imagery/MapServer" />    </esri:Scene>    <esri:SceneView.GraphicsOverlays>     <esri:GraphicsOverlay ID="MyPlacemarkLayer" Renderer="{StaticResource MyRenderer}" RenderingMode="Dynamic">      <esri:GraphicsOverlay.SceneProperties>       <esri:LayerSceneProperties SurfacePlacement="Relative"/>      </esri:GraphicsOverlay.SceneProperties>     </esri:GraphicsOverlay>    </esri:SceneView.GraphicsOverlays>  </esri:SceneView>  </Grid> ... View more

My code generates a points that has a PictureMarkerSymbol. It is run over and over, and the previously generated graphic is removed and a new one is added (so it looks like the plane is moving, does not have to be a fluent animation).  My issues is that I am able to add the initial heading of the symbol, so it has the correct heading, but the heading never changes afterwards. Also, when I rotate the map, the icon's heading seems to be fixed with the screen (always points to the same place with respect of the screen. Also, the altitude is always touching the ground. (same point looked from another angle) How do I make the direction of the icon always point to the real heading, and how can I have some elevation? My code: var graphicsOverlay = MySceneView.GraphicsOverlays["MyGraphicsOverlay"] as Esri.ArcGISRuntime.Controls.GraphicsOverlay; if (graphicsOverlay == null) {     graphicsOverlay = new GraphicsOverlay();     graphicsOverlay.ID = "MyGraphicsOverlay"; } //Convert from latlon to ArcGis Window coordinate var scenePoint =  new Esri.ArcGISRuntime.Geometry.MapPoint(lon,lat,alt,MySceneView.SpatialReference); var pointSceneGraphic = new Esri.ArcGISRuntime.Layers.Graphic(); pointSceneGraphic.Geometry = scenePoint; //set the graphic of the placemarker Esri.ArcGISRuntime.Symbology.PictureMarkerSymbol imgSym = new Esri.ArcGISRuntime.Symbology.PictureMarkerSymbol(); imgSym.SetSourceAsync(new Uri(iconHref)); imgSym.AngleAlignment = Esri.ArcGISRuntime.Symbology.MarkerAngleAlignment.Map; imgSym.Angle = platformHeading;                     pointSceneGraphic.Symbol = imgSym; ret = pointSceneGraphic.GetHashCode().ToString(); MySceneView.GraphicsOverlays[0].Graphics.Add(pointSceneGraphic); foreach (var graphicsObj in graphicsOverlay.Graphics) {     if (graphicsObj.GetHashCode().ToString() == oldId)     {         graphicsOverlay.Graphics.Remove(graphicsObj);         break;     } } My WPF looks like this <Grid>         <esri:SceneView x:Name="MySceneView" Visibility="Visible" LayerLoaded="MySceneView_LayerLoaded">             <esri:Scene>                 <esri:ArcGISTiledMapServiceLayer ID="BaseScene" ResamplingMode="None"                     ServiceUri="http://services.arcgisonline.com/arcgis/rest/services/World_Imagery/MapServer" />             </esri:Scene>         </esri:SceneView> </Grid> Is there a better way to do what I'm doing? ... View more

I have a simple code that gets a Kml String, writes it to a file, and then adds it to the kmlLayer. In the KML strings I receive, I have a placemark that updates the position of a vehicle. Is there a way to efficiently update that Kml object constantly, without having to remove the KmlLayer and add a new one. It doesn't have to be a fluid animation, I just want to see the placemark updating quickly. My current implementation looks like this: public string AddKmlObject(KmlObject kmlObj, string folderPath, string oldObjectId) {     try     {         if (kmlObj != null)//ArcGis does not support KML Strings, so I write KML into a file          {             System.IO.File.WriteAllText(_tempFilePath, kmlObj.ToKml());//Converts object to Kml Text                            KmlLayer kmlLayer = new KmlLayer(new Uri(_tempFilePath));             kmlLayer.ID = kmlLayer.GetHashCode().ToString();             IkenaSceneView.Scene.Layers.Add(kmlLayer);                if (oldObjectId != "")                 MySceneView.Scene.Layers.Remove(oldObjectId); //Remove previous Kml                            return kmlLayer.ID;          }          }     catch     {     }     return "";   } Is there a better way to do this? ... View more

Is there a way to set the camera looking at a specific point in the scene without specifying a heading or pitch explicitly? I found a how to calculate pitch and heading using the haversine formula, but I was wondering if ArcGIS could do this for me. I want something similar to this: Esri.ArcGISRuntime.Geometry.MapPoint mapPoint1 = new Esri.ArcGISRuntime.Geometry.MapPoint(cameraX, cameraY, cameraAlt); Esri.ArcGISRuntime.Geometry.MapPoint mapPoint2 = new Esri.ArcGISRuntime.Geometry.MapPoint(targetX, targetY, targetAlt); Esri.ArcGISRuntime.Controls.Camera camera = new Camera(mapPoint1,0,0); //or //Esri.ArcGISRuntime.Controls.Camera camera = new Camera(mapPoint1,calculatedHeading,calculatedPitch); Viewpoint vp = new Viewpoint(camera, mapPoint2); //camera looks at mapPoint2 MySceneView.SetView(vp); Thanks. ... View more

I am new to the ArcGIS SDK and I can't seem to find how to add a picture on top of the map, using 4-coner coordinates. In the snippet below, coords has the coordiantes for 4 points. I know all I try to do in this example is to fill a polygon with a picture, so if anyone has an example on how to overlay a picture over the map, I would appreciate it. Thanks. System.Uri myPictureUri = new System.Uri("https://upload.wikimedia.org/wikipedia/commons/0/03/Piwnice_aerial_view.jpg"); Esri.ArcGISRuntime.Symbology.PictureFillSymbol pictureFillSymbol = new Esri.ArcGISRuntime.Symbology.PictureFillSymbol(); pictureFillSymbol.SetSourceAsync(myPictureUri); var graphicsLayer = MyMap.Layers["MyGraphicsLayer"] as Esri.ArcGISRuntime.Layers.GraphicsLayer; if (graphicsLayer == null) {   graphicsLayer = new Esri.ArcGISRuntime.Layers.GraphicsLayer();   graphicsLayer.ID = "MyGraphicsLayer";   MyMap.Layers.Add(graphicsLayer); } System.Collections.ObjectModel.ObservableCollection<Esri.ArcGISRuntime.Geometry.PointCollection> rings =   new System.Collections.ObjectModel.ObservableCollection<Esri.ArcGISRuntime.Geometry.PointCollection>(); Esri.ArcGISRuntime.Geometry.PointCollection pointCollection = new Esri.ArcGISRuntime.Geometry.PointCollection(MyMapView.SpatialReference); for (int i = 0; i < coords.Length-2; i = i + 2) {   Esri.ArcGISRuntime.Geometry.MapPoint point;   point = Esri.ArcGISRuntime.Geometry.ConvertCoordinate.FromDecimalDegrees(coords.ToString() + " " + coords[i + 1].ToString(), MyMapView.SpatialReference);   pointCollection.Add(point); } rings.Add(pointCollection); //Set Geometry Esri.ArcGISRuntime.Geometry.Polygon p = new Esri.ArcGISRuntime.Geometry.Polygon(rings, MyMap.SpatialReference); var overlayGraphic = new Esri.ArcGISRuntime.Layers.Graphic(); overlayGraphic.Geometry = p; overlayGraphic.Symbol = pictureFillSymbol; graphicsLayer.Graphics.Add(overlayGraphic); ... View more