private void AddFeatureToTree(KmlFeature feature, LayerUITreeNode parent)
        {
            feature.Dirty = false;
            string text = feature.Name;

            //if (!string.IsNullOrEmpty(feature.description))
            //{
            //    text += Environment.NewLine + feature.description;
            //}
            bool bold = false;
            if (text.Contains("<b>"))
            {
                bold = true;
                text = text.Replace("<b>", "").Replace("</b>", "");
            }

            LayerUITreeNode node = null;

            if (!(feature is KmlNetworkLink))
            {
                node = parent.Add(text);
                node.Tag = feature;
                node.Checked = feature.visibility;
                node.Opened = feature.open;
                node.NodeChecked += new LayerUITreeNodeCheckedDelegate(node_NodeChecked);
                node.NodeUpdated += new LayerUITreeNodeUpdatedDelegate(node_NodeUpdated);
                node.NodeActivated += new LayerUITreeNodeActivatedDelegate(node_NodeActivated);
                node.NodeSelected += new LayerUITreeNodeSelectedDelegate(node_NodeSelected);
                if (bold)
                {
                    node.Bold = true;
                }
            }

            if (feature is KmlContainer)
            {
                KmlContainer container = (KmlContainer)feature;
                if (container.children != null)
                {
                    //  if (feature.Style.GetStyle(false).ListStyle.ListItemType != KmlListItemTypes.CheckHideChildren)
                    {

                        foreach (KmlFeature child in container.children)
                        {
                            AddFeatureToTree(child, node);
                        }
                    }
                }
            }
            else
            {
                if (feature is KmlNetworkLink)
                {
                    KmlNetworkLink netLink = (KmlNetworkLink)feature;
                    if (netLink.LinkRoot != null)
                    {
                        AddRootToTree(netLink.LinkRoot, parent);
                    }
                }
            }
        }
        private void AddFeatureToDisplay(KmlFeature feature, bool sky)
        {
            KmlDocument doc = feature as KmlDocument;
            if (doc != null)
            {
                sky = doc.sky;
            }
            if (!(feature is KmlNetworkLink))
            {
                if (feature.visibility == false)
                {
                    return;
                }
                else if (feature is KmlPlacemark)
                {
                    KmlPlacemark placemark = (KmlPlacemark)feature;
                    KmlStyle style = placemark.Style.GetStyle(placemark.Selected);
                    Color lineColor = Color.White;
                    if (style != null)
                    {
                        lineColor = style.LineStyle.Color;
                    }
                    if (placemark.geometry is KmlPoint)
                    {
                        placemark.Point = (KmlPoint)placemark.geometry;
                        AddPlacemark(placemark);
                    }
                    else if (placemark.geometry is KmlMultiGeometry)
                    {
                        KmlMultiGeometry geo = (KmlMultiGeometry)placemark.geometry;
                        AddMultiGeometry(sky, placemark, (float)style.LineStyle.Width, style.PolyStyle.Color, lineColor, geo);
                    }
                    else if (placemark.geometry is KmlPolygon)
                    {
                        KmlPolygon geo = (KmlPolygon)placemark.geometry;
                        if (geo.OuterBoundary != null)
                        {
                            AddLines(sky, geo.OuterBoundary as KmlLineList, (float)style.LineStyle.Width, style.PolyStyle.Color, lineColor, geo.extrude);
                            // to do 3d work and subtract inner rings
                        }
                    }
                    else if (placemark.geometry is KmlLineString)
                    {
                        KmlLineString geo = (KmlLineString)placemark.geometry;

                        List<Vector3d> vertexList = new List<Vector3d>();
                        for (int i = 0; i < (geo.PointList.Count); i++)
                        {
                            vertexList.Add(Coordinates.GeoTo3dDouble(geo.PointList[i].Lat, geo.PointList[i].Lng, 1 + (geo.PointList[i].Alt / geo.MeanRadius)));
                        }
                        for (int i = 0; i < (geo.PointList.Count - 1); i++)
                        {
                            if (sky)
                            {
                                lines.AddLine(Coordinates.RADecTo3d(-(180.0 - geo.PointList[i].Lng) / 15 + 12, geo.PointList[i].Lat, 1), Coordinates.RADecTo3d(-(180.0 - geo.PointList[i + 1].Lng) / 15 + 12, geo.PointList[i + 1].Lat, 1), lineColor, new Dates());
                            }
                            else
                            {
                                lines.AddLine(vertexList[i], vertexList[i + 1], lineColor, new Dates());
                            }
                        }

                    }
                }
                if (feature is KmlGroundOverlay && feature.visibility)
                {
                    AddGroundOverlay(feature as KmlGroundOverlay);
                }

                if (feature is KmlScreenOverlay && feature.visibility)
                {
                    AddScreenOverlay(feature as KmlScreenOverlay);
                }
            }
            if (feature.visibility)
            {
                if (feature is KmlContainer)
                {
                    KmlContainer container = (KmlContainer)feature;
                    if (container.children != null)
                    {

                        foreach (KmlFeature child in container.children)
                        {
                            AddFeatureToDisplay(child, sky);
                        }
                    }
                }
                else
                {
                    if (feature is KmlNetworkLink)
                    {
                        KmlNetworkLink netLink = (KmlNetworkLink)feature;
                        if (netLink.LinkRoot != null)
                        {
                            foreach (KmlFeature child in netLink.LinkRoot.children)
                            {
                                AddFeatureToDisplay(child, sky);
                            }
                        }
                    }
                }
            }
        }
 //todo this stuff below is too tightly coupled to implementtion for winforms
 public static void GotoLookAt(KmlFeature feature)
 {
     //todo add sky support
     CameraParameters camera = new CameraParameters();
     camera.Lat = feature.LookAt.latitude;
     camera.Lng = feature.LookAt.longitude;
     camera.Rotation = feature.LookAt.heading / 180 * Math.PI;
     camera.Angle = -feature.LookAt.tilt / 180 * Math.PI;
     camera.Zoom = UiTools.MetersToZoom(feature.LookAt.range);
     TourPlace p = new TourPlace(feature.Name, camera, Classification.Unidentified, "", ImageSetType.Earth, SolarSystemObjects.Earth);
     Earth3d.MainWindow.GotoTarget(p, false, false, true);
 }
 private static void UpdateLinks(KmlFeature feature, KmlViewInformation viewInfo)
 {
     if (feature.visibility)
     {
         if (feature is KmlContainer)
         {
             KmlContainer container = (KmlContainer)feature;
             if (container.children != null)
             {
                 foreach (KmlFeature child in container.children)
                 {
                     UpdateLinks(child, viewInfo);
                 }
             }
         }
         else
         {
             if (feature is KmlNetworkLink)
             {
                 KmlNetworkLink netLink = (KmlNetworkLink)feature;
                 netLink.ConditionalUpdate(viewInfo);
                 if (netLink.LinkRoot != null)
                 {
                     UpdateRootLinks(netLink.LinkRoot, viewInfo);
                 }
             }
         }
     }
 }