/// <summary>
/// Returns a List of the tile BoundingBoxes which cover the complete area of the map BoundingBox
/// </summary>
/// <param name="tileSet">The TileSet that provides the tiles</param>
/// <param name="extent">The BoundingBox of the map</param>
/// <param name="mapResolution">The resolution of the map</param>
/// <returns></returns>
public static List<BoundingBox> GetTileExtents(TileSet tileSet, BoundingBox extent, double mapResolution)
{
tileSet.Resolutions.Sort();
double tileResolution = GetTileResolution(tileSet.Resolutions, mapResolution);
List<BoundingBox> tileExtents = new List<BoundingBox>();
double xOrigin = tileSet.BoundingBox.Left;
double yOrigin = tileSet.BoundingBox.Bottom;
double tileWorldUnits = tileResolution*tileSet.Width;
BoundingBox tileBbox = new BoundingBox(
Math.Floor((extent.Left - xOrigin)/tileWorldUnits)*tileWorldUnits + xOrigin,
Math.Floor((extent.Bottom - yOrigin)/tileWorldUnits)*tileWorldUnits + yOrigin,
Math.Ceiling((extent.Right - xOrigin)/tileWorldUnits)*tileWorldUnits + xOrigin,
Math.Ceiling((extent.Top - yOrigin)/tileWorldUnits)*tileWorldUnits + yOrigin);
int tileCountX = (int) Math.Round((tileBbox.Right - tileBbox.Left)/tileWorldUnits);
int tileCountY = (int) Math.Round((tileBbox.Top - tileBbox.Bottom)/tileWorldUnits);
for (int x = 0; x < tileCountX; x++)
{
for (int y = 0; y < tileCountY; y++)
{
double x1 = tileBbox.Left + x*tileWorldUnits;
double y1 = tileBbox.Bottom + y*tileWorldUnits;
double x2 = x1 + tileWorldUnits;
double y2 = y1 + tileWorldUnits;
BoundingBox tileExtent = new BoundingBox(x1, y1, x2, y2);
if (CheckForBounds(tileSet.BoundingBox, tileExtent))
{
tileExtents.Add(tileExtent);
}
}
}
return tileExtents;
}
/// <summary>
/// Returns a List of the tile BoundingBoxes which cover the complete area of the map BoundingBox
/// </summary>
/// <param name="tileSet">The TileSet that provides the tiles</param>
/// <param name="extent">The BoundingBox of the map</param>
/// <param name="mapResolution">The resolution of the map</param>
/// <returns></returns>
public static List<Envelope> GetTileExtents(TileSet tileSet, Envelope extent, double mapResolution)
{
tileSet.Resolutions.Sort();
double tileResolution = GetTileResolution(tileSet.Resolutions, mapResolution);
var tileExtents = new List<Envelope>();
double xOrigin = tileSet.BoundingBox.MinX;
double yOrigin = tileSet.BoundingBox.MinY;
double tileWorldUnits = tileResolution*tileSet.Width;
var tileBbox = new Envelope(
Math.Floor((extent.MinX - xOrigin)/tileWorldUnits)*tileWorldUnits + xOrigin,
Math.Floor((extent.MinY - yOrigin)/tileWorldUnits)*tileWorldUnits + yOrigin,
Math.Ceiling((extent.MaxX - xOrigin)/tileWorldUnits)*tileWorldUnits + xOrigin,
Math.Ceiling((extent.MaxY - yOrigin)/tileWorldUnits)*tileWorldUnits + yOrigin);
int tileCountX = (int) Math.Round((tileBbox.MaxX - tileBbox.MinX)/tileWorldUnits);
int tileCountY = (int) Math.Round((tileBbox.MaxY - tileBbox.MinY)/tileWorldUnits);
for (int x = 0; x < tileCountX; x++)
{
for (int y = 0; y < tileCountY; y++)
{
double x1 = tileBbox.MinX + x*tileWorldUnits;
double y1 = tileBbox.MinY + y*tileWorldUnits;
double x2 = x1 + tileWorldUnits;
double y2 = y1 + tileWorldUnits;
var tileExtent = new Envelope(x1, x2, y1, y2);
if (CheckForBounds(tileSet.BoundingBox, tileExtent))
{
tileExtents.Add(tileExtent);
}
}
}
return tileExtents;
}
private Bitmap WmsGetMap(Envelope extent, TileSet tileSet)
{
Stream responseStream = null;
Bitmap bitmap = null;
Client.WmsOnlineResource resource = GetPreferredMethod();
string requestUrl = GetRequestUrl(extent, tileSet);
Uri myUri = new Uri(requestUrl);
WebRequest webRequest = WebRequest.Create(myUri);
webRequest.Method = resource.Type;
webRequest.Timeout = TimeOut;
if (Credentials != null)
webRequest.Credentials = Credentials;
else
webRequest.Credentials = CredentialCache.DefaultCredentials;
if (Proxy != null)
webRequest.Proxy = Proxy;
HttpWebResponse webResponse = null;
try
{
webResponse = (HttpWebResponse) webRequest.GetResponse();
if (webResponse.ContentType.StartsWith("image"))
{
responseStream = webResponse.GetResponseStream();
bitmap = (Bitmap) Bitmap.FromStream(responseStream);
return (Bitmap) bitmap;
}
else
{
//if the result was not an image retrieve content anyway for debugging.
responseStream = webResponse.GetResponseStream();
StreamReader readStream = new StreamReader(responseStream, Encoding.UTF8);
StringWriter stringWriter = new StringWriter();
stringWriter.Write(readStream.ReadToEnd());
string message = "Failed to retrieve image from the WMS in layer '" + LayerName +
"'. Was expecting image but received this: " + stringWriter.ToString();
HandleGetMapException(message, null);
;
return null;
}
}
catch (WebException webEx)
{
string message = "There was a problem connecting to the WMS server when rendering layer '" + LayerName +
"'";
HandleGetMapException(message, webEx);
}
catch (Exception ex)
{
string message = "There was a problem while retrieving the image from the WMS in layer '" + LayerName +
"'";
HandleGetMapException(message, ex);
}
finally
{
if (webResponse != null)
{
webResponse.Close();
}
if (responseStream != null)
{
responseStream.Close();
responseStream.Dispose();
}
}
return bitmap;
}
private string GetRequestUrl(Envelope box, TileSet tileSet)
{
Client.WmsOnlineResource resource = GetPreferredMethod();
StringBuilder strReq = new StringBuilder(resource.OnlineResource);
if (!resource.OnlineResource.Contains("?"))
strReq.Append("?");
if (!strReq.ToString().EndsWith("&") && !strReq.ToString().EndsWith("?"))
strReq.Append("&");
strReq.AppendFormat(Map.NumberFormatEnUs, "&REQUEST=GetMap&BBOX={0},{1},{2},{3}",
box.MinX, box.MinY, box.MaxX, box.MaxY);
strReq.AppendFormat("&WIDTH={0}&Height={1}", tileSet.Width, tileSet.Height);
strReq.Append("&LAYERS=");
// LAYERS is set in caps because the current version of tilecache.py does not accept mixed case (a little bug)
if (tileSet.Layers != null && tileSet.Layers.Count > 0)
{
foreach (string layer in tileSet.Layers)
strReq.AppendFormat("{0},", layer);
strReq.Remove(strReq.Length - 1, 1);
}
strReq.AppendFormat("&FORMAT={0}", tileSet.Format);
if (_WmsClient.WmsVersion == "1.3.0")
strReq.AppendFormat("&CRS={0}", tileSet.Srs);
else
strReq.AppendFormat("&SRS={0}", tileSet.Srs);
strReq.AppendFormat("&VERSION={0}", _WmsClient.WmsVersion);
if (tileSet.Styles != null && tileSet.Styles.Count > 0)
{
strReq.Append("&STYLES=");
foreach (string style in tileSet.Styles)
strReq.AppendFormat("{0},", style);
strReq.Remove(strReq.Length - 1, 1);
}
if (_CustomParameters != null && _CustomParameters.Count > 0)
{
foreach (string name in _CustomParameters.Keys)
{
string value = _CustomParameters[name];
strReq.AppendFormat("&{0}={1}", name, value);
}
}
return strReq.ToString();
}
private static TileSet ParseTileSetNode(XmlNode xnlTileSet, XmlNamespaceManager nsmgr)
{
var tileSet = new TileSet();
var xnLayers = xnlTileSet.SelectSingleNode("sm:Layers", nsmgr);
if (xnLayers != null)
tileSet.Layers.AddRange(xnLayers.InnerText.Split(new[] {','}));
tileSet.Name = CreateDefaultName(tileSet._layers);
var xnSrs = xnlTileSet.SelectSingleNode("sm:SRS", nsmgr);
if (xnSrs != null)
tileSet.Srs = xnSrs.InnerText;
var xnWidth = xnlTileSet.SelectSingleNode("sm:Width", nsmgr);
if (xnWidth != null)
{
int width;
if (!Int32.TryParse(xnWidth.InnerText, NumberStyles.Any, Map.NumberFormatEnUs, out width))
throw new ArgumentException("Invalid width on tileset '" + tileSet.Name + "'");
tileSet.Width = width;
}
var xnHeight = xnlTileSet.SelectSingleNode("sm:Height", nsmgr);
if (xnHeight != null)
{
int height;
if (!Int32.TryParse(xnHeight.InnerText, NumberStyles.Any, Map.NumberFormatEnUs, out height))
throw new ArgumentException("Invalid width on tileset '" + tileSet.Name + "'");
tileSet.Height = height;
}
var xnFormat = xnlTileSet.SelectSingleNode("sm:Format", nsmgr);
if (xnFormat != null)
tileSet.Format = xnFormat.InnerText;
var xnStyles = xnlTileSet.SelectSingleNode("sm:Styles", nsmgr);
if (xnStyles != null)
tileSet.Styles.AddRange(xnStyles.InnerText.Split(new[] {','}));
var xnBoundingBox = xnlTileSet.SelectSingleNode("sm:BoundingBox", nsmgr);
if (xnBoundingBox != null)
{
var att = xnBoundingBox.Attributes;
double minx, miny, maxx, maxy;
if (att == null || (
!double.TryParse(att["minx"].Value, NumberStyles.Any, Map.NumberFormatEnUs, out minx) &
!double.TryParse(att["miny"].Value, NumberStyles.Any, Map.NumberFormatEnUs, out miny) &
!double.TryParse(att["maxx"].Value, NumberStyles.Any, Map.NumberFormatEnUs, out maxx) &
!double.TryParse(att["maxy"].Value, NumberStyles.Any, Map.NumberFormatEnUs, out maxy)))
{
throw new ArgumentException("Invalid LatLonBoundingBox on tileset '" + tileSet.Name + "'");
}
tileSet.BoundingBox = new Envelope(minx, maxx, miny, maxy);
}
var xnResolutions = xnlTileSet.SelectSingleNode("sm:Resolutions", nsmgr);
if (xnResolutions != null)
{
var resolutions = xnResolutions.InnerText.TrimEnd(' ').Split(new[] {' '});
foreach (string resolutionStr in resolutions)
{
if (resolutionStr != "")
{
double resolution;
if (!Double.TryParse(resolutionStr, NumberStyles.Any, Map.NumberFormatEnUs, out resolution))
throw new ArgumentException("Invalid resolution on tileset '" + tileSet.Name + "'");
tileSet.Resolutions.Add(resolution);
}
}
}
return tileSet;
}
private static TileSet ParseTileSetNode(XmlNode xnlTileSet, XmlNamespaceManager nsmgr)
{
TileSet tileSet = new TileSet();
XmlNode xnLayers = xnlTileSet.SelectSingleNode("sm:Layers", nsmgr);
if (xnLayers != null)
{
tileSet.Layers.AddRange(xnLayers.InnerText.Split(new char[] { ',' }));
}
tileSet.Name = CreateDefaultName(tileSet.layers);
XmlNode xnSRS = xnlTileSet.SelectSingleNode("sm:SRS", nsmgr);
if (xnSRS != null)
{
tileSet.Srs = xnSRS.InnerText;
}
XmlNode xnWidth = xnlTileSet.SelectSingleNode("sm:Width", nsmgr);
if (xnWidth != null)
{
int width;
if (!Int32.TryParse(xnWidth.InnerText, System.Globalization.NumberStyles.Any, SharpMap.Map.numberFormat_EnUS, out width))
{
throw new ArgumentException("Invalid width on tileset '" + tileSet.Name + "'");
}
tileSet.Width = width;
}
XmlNode xnHeight = xnlTileSet.SelectSingleNode("sm:Height", nsmgr);
if (xnHeight != null)
{
int height;
if (!Int32.TryParse(xnWidth.InnerText, System.Globalization.NumberStyles.Any, SharpMap.Map.numberFormat_EnUS, out height))
{
throw new ArgumentException("Invalid width on tileset '" + tileSet.Name + "'");
}
tileSet.Height = height;
}
XmlNode xnFormat = xnlTileSet.SelectSingleNode("sm:Format", nsmgr);
if (xnFormat != null)
{
tileSet.Format = xnFormat.InnerText;
}
XmlNode xnStyles = xnlTileSet.SelectSingleNode("sm:Styles", nsmgr);
if (xnStyles != null)
{
tileSet.Styles.AddRange(xnStyles.InnerText.Split(new char[] { ',' }));
}
XmlNode xnBoundingBox = xnlTileSet.SelectSingleNode("sm:BoundingBox", nsmgr);
if (xnBoundingBox != null)
{
double minx = 0; double miny = 0; double maxx = 0; double maxy = 0;
if
(
!double.TryParse(xnBoundingBox.Attributes["minx"].Value, System.Globalization.NumberStyles.Any, SharpMap.Map.numberFormat_EnUS, out minx) &
!double.TryParse(xnBoundingBox.Attributes["miny"].Value, System.Globalization.NumberStyles.Any, SharpMap.Map.numberFormat_EnUS, out miny) &
!double.TryParse(xnBoundingBox.Attributes["maxx"].Value, System.Globalization.NumberStyles.Any, SharpMap.Map.numberFormat_EnUS, out maxx) &
!double.TryParse(xnBoundingBox.Attributes["maxy"].Value, System.Globalization.NumberStyles.Any, SharpMap.Map.numberFormat_EnUS, out maxy)
)
{
throw new ArgumentException("Invalid LatLonBoundingBox on tileset '" + tileSet.Name + "'");
}
tileSet.BoundingBox = new SharpMap.Geometries.BoundingBox(minx, miny, maxx, maxy);
}
XmlNode xnResolutions = xnlTileSet.SelectSingleNode("sm:Resolutions", nsmgr);
if (xnResolutions != null)
{
double resolution;
string[] resolutions = xnResolutions.InnerText.Split(new char[] { ' ' });
foreach (string resolutionStr in resolutions)
{
if (!Double.TryParse(resolutionStr, System.Globalization.NumberStyles.Any, SharpMap.Map.numberFormat_EnUS, out resolution))
{
throw new ArgumentException("Invalid resolution on tileset '" + tileSet.Name + "'");
}
tileSet.Resolutions.Add(resolution);
}
}
return(tileSet);
}
private static TileSet ParseTileSetNode(XmlNode xnlTileSet, XmlNamespaceManager nsmgr)
{
TileSet tileSet = new TileSet();
XmlNode xnLayers = xnlTileSet.SelectSingleNode("sm:Layers", nsmgr);
if (xnLayers != null)
tileSet.Layers.AddRange(xnLayers.InnerText.Split(new char[] { ',' }));
tileSet.Name = CreateDefaultName(tileSet.layers);
XmlNode xnSRS = xnlTileSet.SelectSingleNode("sm:SRS", nsmgr);
if (xnSRS != null)
tileSet.Srs = xnSRS.InnerText;
XmlNode xnWidth = xnlTileSet.SelectSingleNode("sm:Width", nsmgr);
if (xnWidth != null)
{
int width;
if (!Int32.TryParse(xnWidth.InnerText, System.Globalization.NumberStyles.Any, SharpMap.Map.numberFormat_EnUS, out width))
throw new ArgumentException("Invalid width on tileset '" + tileSet.Name + "'");
tileSet.Width = width;
}
XmlNode xnHeight = xnlTileSet.SelectSingleNode("sm:Height", nsmgr);
if (xnHeight != null)
{
int height;
if (!Int32.TryParse(xnWidth.InnerText, System.Globalization.NumberStyles.Any, SharpMap.Map.numberFormat_EnUS, out height))
throw new ArgumentException("Invalid width on tileset '" + tileSet.Name + "'");
tileSet.Height = height;
}
XmlNode xnFormat = xnlTileSet.SelectSingleNode("sm:Format", nsmgr);
if (xnFormat != null)
tileSet.Format = xnFormat.InnerText;
XmlNode xnStyles = xnlTileSet.SelectSingleNode("sm:Styles", nsmgr);
if (xnStyles != null)
tileSet.Styles.AddRange(xnStyles.InnerText.Split(new char[] { ',' }));
XmlNode xnBoundingBox = xnlTileSet.SelectSingleNode("sm:BoundingBox", nsmgr);
if (xnBoundingBox != null)
{
double minx = 0; double miny = 0; double maxx = 0; double maxy = 0;
if
(
!double.TryParse(xnBoundingBox.Attributes["minx"].Value, System.Globalization.NumberStyles.Any, SharpMap.Map.numberFormat_EnUS, out minx) &
!double.TryParse(xnBoundingBox.Attributes["miny"].Value, System.Globalization.NumberStyles.Any, SharpMap.Map.numberFormat_EnUS, out miny) &
!double.TryParse(xnBoundingBox.Attributes["maxx"].Value, System.Globalization.NumberStyles.Any, SharpMap.Map.numberFormat_EnUS, out maxx) &
!double.TryParse(xnBoundingBox.Attributes["maxy"].Value, System.Globalization.NumberStyles.Any, SharpMap.Map.numberFormat_EnUS, out maxy)
)
{
throw new ArgumentException("Invalid LatLonBoundingBox on tileset '" + tileSet.Name + "'");
}
tileSet.BoundingBox = new SharpMap.Geometries.BoundingBox(minx, miny, maxx, maxy);
}
XmlNode xnResolutions = xnlTileSet.SelectSingleNode("sm:Resolutions", nsmgr);
if (xnResolutions != null)
{
double resolution;
string[] resolutions = xnResolutions.InnerText.Split(new char[] { ' ' });
foreach (string resolutionStr in resolutions)
{
if (!Double.TryParse(resolutionStr, System.Globalization.NumberStyles.Any, SharpMap.Map.numberFormat_EnUS, out resolution))
throw new ArgumentException("Invalid resolution on tileset '" + tileSet.Name + "'");
tileSet.Resolutions.Add(resolution);
}
}
return tileSet;
}
private static TileSet ParseTileSetNode(XmlNode xnlTileSet, XmlNamespaceManager nsmgr)
{
var tileSet = new TileSet();
var xnLayers = xnlTileSet.SelectSingleNode("sm:Layers", nsmgr);
if (xnLayers != null)
{
tileSet.Layers.AddRange(xnLayers.InnerText.Split(new[] { ',' }));
}
tileSet.Name = CreateDefaultName(tileSet._layers);
var xnSrs = xnlTileSet.SelectSingleNode("sm:SRS", nsmgr);
if (xnSrs != null)
{
tileSet.Srs = xnSrs.InnerText;
}
var xnWidth = xnlTileSet.SelectSingleNode("sm:Width", nsmgr);
if (xnWidth != null)
{
int width;
if (!Int32.TryParse(xnWidth.InnerText, NumberStyles.Any, Map.NumberFormatEnUs, out width))
{
throw new ArgumentException("Invalid width on tileset '" + tileSet.Name + "'");
}
tileSet.Width = width;
}
var xnHeight = xnlTileSet.SelectSingleNode("sm:Height", nsmgr);
if (xnHeight != null)
{
int height;
if (!Int32.TryParse(xnHeight.InnerText, NumberStyles.Any, Map.NumberFormatEnUs, out height))
{
throw new ArgumentException("Invalid width on tileset '" + tileSet.Name + "'");
}
tileSet.Height = height;
}
var xnFormat = xnlTileSet.SelectSingleNode("sm:Format", nsmgr);
if (xnFormat != null)
{
tileSet.Format = xnFormat.InnerText;
}
var xnStyles = xnlTileSet.SelectSingleNode("sm:Styles", nsmgr);
if (xnStyles != null)
{
tileSet.Styles.AddRange(xnStyles.InnerText.Split(new[] { ',' }));
}
var xnBoundingBox = xnlTileSet.SelectSingleNode("sm:BoundingBox", nsmgr);
if (xnBoundingBox != null)
{
var att = xnBoundingBox.Attributes;
double minx, miny, maxx, maxy;
if (att == null || (
!double.TryParse(att["minx"].Value, NumberStyles.Any, Map.NumberFormatEnUs, out minx) &
!double.TryParse(att["miny"].Value, NumberStyles.Any, Map.NumberFormatEnUs, out miny) &
!double.TryParse(att["maxx"].Value, NumberStyles.Any, Map.NumberFormatEnUs, out maxx) &
!double.TryParse(att["maxy"].Value, NumberStyles.Any, Map.NumberFormatEnUs, out maxy)))
{
throw new ArgumentException("Invalid LatLonBoundingBox on tileset '" + tileSet.Name + "'");
}
tileSet.BoundingBox = new Envelope(minx, maxx, miny, maxy);
}
var xnResolutions = xnlTileSet.SelectSingleNode("sm:Resolutions", nsmgr);
if (xnResolutions != null)
{
var resolutions = xnResolutions.InnerText.TrimEnd(' ').Split(new[] { ' ' });
foreach (string resolutionStr in resolutions)
{
if (resolutionStr != "")
{
double resolution;
if (!Double.TryParse(resolutionStr, NumberStyles.Any, Map.NumberFormatEnUs, out resolution))
{
throw new ArgumentException("Invalid resolution on tileset '" + tileSet.Name + "'");
}
tileSet.Resolutions.Add(resolution);
}
}
}
return(tileSet);
}
