public GISLayer(GISLayer currentLayer)
{
this.Visible = currentLayer.Visible;
this.Id = currentLayer.Id;
this.Name = currentLayer.Name;
this.LayerType = currentLayer.LayerType;
this._envelope = currentLayer._envelope;
this._Features = currentLayer._Features;
}
public static void AsXml(XmlWriter xtw, GISEnvelope envelope)
{
xtw.WriteStartElement("ENVELOPE");
xtw.WriteAttributeString("", "maxx", "", envelope.maxX.ToString());
xtw.WriteAttributeString("", "minx", "", envelope.minX.ToString());
xtw.WriteAttributeString("", "maxy", "", envelope.maxY.ToString());
xtw.WriteAttributeString("", "miny", "", envelope.minY.ToString());
xtw.WriteEndElement(); // ENVELOPER
}
public static GISEnvelope Calculate(double centerX, double centerY, double width, double height)
{
double widthfactor = 1.0;
GISEnvelope env = new GISEnvelope();
do
{
env.minY = GetCoordinate(centerX, centerY, 180, height / widthfactor).lat;
env.maxY = GetCoordinate(centerX, centerY, 0, height / widthfactor).lat;
env.maxX = GetCoordinate(centerX, centerY, 270, width / widthfactor).lon;
env.minX = GetCoordinate(centerX, centerY, 90, width / widthfactor).lon;
widthfactor += 1.0;
}
while (((int)env.CenterX != (int)centerX || (int)env.CenterY != (int)centerY || env.minY > env.maxY) && widthfactor < 6);
if (env.minX > env.maxX)
{
env.maxX = -env.maxX;
env.minX = -env.minX;
}
return env;
}
public virtual void ExecuteSearch(string searchTerm, SEARCH_TYPE searchType, GISEnvelope searchArea, GISLayerInfo featureLayer)
{
throw new NotSupportedException(string.Format("Server type {0} does not expose a search interface.", this._Server.Type));
}
public abstract bool GetMap(GISService activeService, GISEnvelope mapEnvelope);
public EsriEnvelope(GISEnvelope env)
: base(env.minX, env.maxX, env.minY, env.MaxY)
{
CoordinateSystem = env.CoordinateSystem;
}
public double GetZoomLevel(GISEnvelope currentExtent)
{
return Controller.SetZoomLevel(currentExtent, Controller.SelectEnvelope(ActiveService));
}
//internal GISEnvelope SelectEnvelope(GISEnvelope lastEnvelope)
//{
// if (_Server.ActiveLayers.Count > 0)
// {
// foreach (GISLayerInfo serviceInfo in _Server.ActiveLayers)
// {
// if (serviceInfo.IsVisible && serviceInfo.BaseExtent != null)
// {
// return serviceInfo.BaseExtent;
// }
// }
// }
// if (_Server.ActiveService.BaseLayers.Count > 0)
// {
// foreach (GISLayerInfo serviceInfo in _Server.ActiveService.BaseLayers)
// {
// if (serviceInfo.IsVisible && serviceInfo.BaseExtent != null)
// {
// return serviceInfo.BaseExtent;
// }
// }
// }
// if (_Server.ActiveService.BaseExtent != null)
// {
// return _Server.ActiveService.BaseExtent;
// }
// return lastEnvelope;
//}
internal virtual double SetZoomLevel(GISEnvelope lastEnvelope, GISEnvelope maximumExtent)
{
if (lastEnvelope != null && maximumExtent != null)
{
//TransformEnvelope(ref lastEnvelope);
//TransformEnvelope(ref maximumExtent);
double zoompercent = 1 - Math.Min(lastEnvelope.Width / maximumExtent.Width, lastEnvelope.Height / maximumExtent.Height);
// double zoompercent = lastEnvelope.Height / maximumExtent.Height;
return 100.0 * zoompercent;
}
else return 0;
}
internal virtual GISEnvelope ZoomAbsolute(double zoomPercent, GISEnvelope lastEnvelope)
{
double zoomAmount = 1 - zoomPercent / 100.0;
GISEnvelope envelope = SelectEnvelope(_Server.ActiveService);
if (lastEnvelope != null)
{
return envelope.Zoom(zoomAmount, lastEnvelope.CenterX, lastEnvelope.CenterY);
}
else return envelope.Zoom(zoomAmount, envelope.CenterX, envelope.CenterY);
}
public bool Identify(int xpoint, int ypoint, double latitude, double longitude, GISEnvelope envelope, GISLayerInfo featureLayer)
{
if (Controller.RequestProcessing)
return false;
else Controller.RequestProcessing = true;
if (featureLayer == null)
{
if (FeatureLayer == null)
{
List<GISLayerInfo> layers = GetQueryLayers();
if (layers.Count() > 0)
{
featureLayer = layers.First();
}
}
else featureLayer = FeatureLayer;
}
return Controller.Identify(xpoint, ypoint, latitude, longitude, envelope, featureLayer);
}
public abstract string GetMapImage(GISService activeService, List<GISLayerInfo> mapLayers, GISEnvelope mapEnvelope, double zoomLevel, int width, int height);
public bool GetMap(GISService service, GISEnvelope mapEnvelope, List<GISLayerInfo> mapLayers)
{
if (Controller.RequestProcessing)
return false;
else Controller.RequestProcessing = true;
return Controller.GetMap(service, mapEnvelope, mapLayers);
}
public string GetMapImage(GISService activeService, List<GISLayerInfo> mapLayers, GISEnvelope mapEnvelope, double zoomLevel, int width, int height)
{
return Controller.GetMapImage(activeService, mapLayers, mapEnvelope, zoomLevel, width, height);
}
public bool GetMap(GISEnvelope envelope, double zoomLevel)
{
if (Controller.RequestProcessing)
return false;
else Controller.RequestProcessing = true;
if (ActiveService != null)
{
if (zoomLevel > MaxZoom) zoomLevel = Math.Floor(MaxZoom - MaxZoom * .1);
return (ZoomType == ZOOM_TYPE.TILED) ? Controller.GetMap(ActiveService, envelope.CenterX, envelope.CenterY, zoomLevel)
: Controller.GetMap(ActiveService, envelope);
}
return false;
}
public bool GetMap(GISEnvelope envelope)
{
if (Controller.RequestProcessing)
return false;
else Controller.RequestProcessing = true;
if (ActiveService != null)
{
return (ZoomType == ZOOM_TYPE.TILED) ? Controller.GetMap(ActiveService, envelope.CenterX, envelope.CenterY, Controller.SetZoomLevel(envelope, ActiveService._baseExtent))
: Controller.GetMap(ActiveService, envelope);
}
return false;
}
public bool ZoomAbsolute(double zoomLevel, GISEnvelope lastEnvelope)
{
return Controller.GetMap(ActiveService, lastEnvelope.CenterX, lastEnvelope.CenterY, zoomLevel);
}
public abstract bool GetMap(GISService activeService, GISEnvelope mapEnvelope, List<GISLayerInfo> mapLayers);
public void ExecuteSearch(string searchTerm, SEARCH_TYPE searchType, GISEnvelope searchArea)
{
if (Controller.RequestProcessing)
return;
else Controller.RequestProcessing = true;
if (FeatureLayer == null)
{
List<GISLayerInfo> layers = GetQueryLayers();
if (layers.Count() > 0)
{
_featureLayer = layers.First();
}
}
Controller.ExecuteSearch(searchTerm, searchType, searchArea, FeatureLayer);
}
public abstract bool GetMap(GISService activeService, List<GISLayerInfo> mapLayers, GISEnvelope mapEnvelope, double zoomLevel, string requestString);
// starts at IMAGE begin element
public static OGCImageResponse ProcessImageReturn(string requestString, GISEnvelope responseEnvelope)
{
OGCImageResponse response = new OGCImageResponse();
response.LastRequest = requestString;
return response;
}
public virtual bool Identify(int xpoint, int ypoint, double latitude, double longitude, GISEnvelope envelope, GISLayerInfo featureLayer)
{
throw new NotImplementedException("base class");
}
internal static GISLayerInfo Create(GISService activeService, GISEnvelope gISEnvelopes)
{
return new OGCLayer() { _id = activeService._serviceName, _isVisible = activeService.IsEnabled, _name = activeService.Name, _baseExtent = gISEnvelopes };
}
internal void TransformEnvelope(ref GISEnvelope inputEnvelope)
{
if (inputEnvelope.CoordinateSystem != "EPSG:4326") return;
double aspectImg = (double)_imageWidth / (double)_imageHeight;
inputEnvelope.maxX = inputEnvelope.minX + (inputEnvelope.Height * aspectImg);
double aspectEnv = inputEnvelope.Width / inputEnvelope.Height;
}
public static GISEnvelope Create(double latitude, double longitude)
{
GISEnvelope envelope = new GISEnvelope();
envelope.minY = latitude - Math.Abs(latitude * .001);
envelope.minX = longitude - Math.Abs(longitude * .001);
envelope.maxY = latitude + Math.Abs(latitude * .001);
envelope.maxX = longitude + Math.Abs(longitude * .001);
return envelope;
}
protected GISEnvelope BuildEnvelope(double centerX, double centerY, GISEnvelope baseEnvelope, double zoomLevel)
{
if (zoomLevel == 0) return baseEnvelope;
double newHeight = (baseEnvelope.Height * (100.0 - zoomLevel) / 100.0) / 2.0;
double newWidth = (baseEnvelope.Width * (100.0 - zoomLevel) / 100.0) / 2.0;
GISEnvelope mapEnvelope = new GISEnvelope(centerX - newWidth, centerX + newWidth, centerY - newHeight, centerY + newHeight);
mapEnvelope.CoordinateSystem = baseEnvelope.CoordinateSystem;
if (mapEnvelope.minX < baseEnvelope.minX) mapEnvelope.minX = baseEnvelope.minX;
if (mapEnvelope.minY < baseEnvelope.minY) mapEnvelope.minY = baseEnvelope.minY;
if (mapEnvelope.maxX > baseEnvelope.maxX) mapEnvelope.maxX = baseEnvelope.maxX;
if (mapEnvelope.maxY > baseEnvelope.maxY) mapEnvelope.maxY = baseEnvelope.maxY;
//TransformEnvelope(ref mapEnvelope);
return mapEnvelope;
}
internal static OGCService Create(XElement layer)
{
GISEnvelope env = new GISEnvelope();
OGCService service = new OGCService("");
// <CRS>CRS:84</CRS>
//<EX_GeographicBoundingBox>
// <westBoundLongitude>-180.0</westBoundLongitude>
// <eastBoundLongitude>180.0</eastBoundLongitude>
// <southBoundLatitude>-90.0</southBoundLatitude>
// <northBoundLatitude>90.0</northBoundLatitude>
//</EX_GeographicBoundingBox>
foreach (XElement el in layer.Elements())
{
if (el.Name == "Name")
{
service._serviceName = layer.Element("Name").Value;
}
else if (el.Name == "Title")
{
service._description = el.Value;
}
else if (el.Name == "SRS")
{
env.CoordinateSystem = el.Value;
}
else if (el.Name == "CRS")
{
env.CoordinateSystem = el.Value;
}
else if (el.Name == "LatLonBoundingBox")
{
env.minX = double.Parse(el.Attribute("minx").Value);
env.maxX = double.Parse(el.Attribute("maxx").Value);
env.minY = double.Parse(el.Attribute("miny").Value);
env.maxY = double.Parse(el.Attribute("maxy").Value);
}
else if (el.Name == "BoundingBox")
{
env.minX = double.Parse(el.Attribute("minx").Value);
env.maxX = double.Parse(el.Attribute("maxx").Value);
env.minY = double.Parse(el.Attribute("miny").Value);
env.maxY = double.Parse(el.Attribute("maxy").Value);
env.CoordinateSystem = el.Attribute("SRS") != null ? el.Attribute("SRS").Value : el.Attribute("CRS").Value;
}
else if (el.Name == "Layer")
{
service._baseLayers.Add(OGCLayer.Create(el));
}
}
service._baseExtent = env;
return service;
}
internal static GISLayerInfo Create(XElement layer)
{
GISEnvelope env = new GISEnvelope();
OGCLayer service = new OGCLayer();
foreach (XElement el in layer.Elements())
{
if (el.Name == "Name")
{
service._id = el.Value;
}
else if (el.Name == "Title")
{
service._name = el.Value;
}
else if (el.Name == "SRS")
{
env.CoordinateSystem = el.Value;
}
else if (el.Name == "LatLonBoundingBox")
{
env.minX = double.Parse(el.Attribute("minx").Value);
env.maxX = double.Parse(el.Attribute("maxx").Value);
env.minY = double.Parse(el.Attribute("miny").Value);
env.maxY = double.Parse(el.Attribute("maxy").Value);
}
else if (el.Name == "BoundingBox")
{
env.minX = double.Parse(el.Attribute("minx").Value);
env.maxX = double.Parse(el.Attribute("maxx").Value);
env.minY = double.Parse(el.Attribute("miny").Value);
env.maxY = double.Parse(el.Attribute("maxy").Value);
env.CoordinateSystem = el.Attribute("SRS").Value;
}
else if (el.Name == "Style")
{
OGCStyle style = new OGCStyle() { Name = el.Element("Name").Value };
style.Abstract = el.Elements(XName.Get("Abstract")).First().Value;
style.Title = el.Elements(XName.Get("Title")).First().Value;
if (el.Elements(XName.Get("LegendURL")).Count() > 0)
{
style.LegendURL = GetHrefFromResource(el.Elements(XName.Get("LegendURL")).First());
}
service.Style.Add(style);
}
}
service._baseExtent = env;
return service;
}
internal static GISEnvelope Parse(string coordstring, string coordsys)
{
GISEnvelope e = new GISEnvelope();
string[] coords = coordstring.Split(',');
e.maxX = double.Parse(coords[3].Replace(',', '.'));
e.minX = double.Parse(coords[1].Replace(',', '.'));
e.maxY = double.Parse(coords[2].Replace(',', '.'));
e.minY = double.Parse(coords[0].Replace(',', '.'));
if (coordstring.Contains(":"))
{
e._coordinateSystem = coordsys;
}
else e._coordinateSystem = string.Format("epsg:{0}", coordsys);
return e;
}
