protected override void SetCursorForHandle(MapViewport viewport, ResizeHandle handle)
{
var ct = ToolCursors.RotateCursor;
viewport.Control.Cursor = ct;
}
public override void Render(Graphics g, MapViewport map)
{
try
{
_shapeFile.Open();
var ds = new FeatureDataSet();
_shapeFile.ExecuteIntersectionQuery(map.Envelope, ds);
var dt = ds.Tables[0];
foreach (FeatureDataRow fdr in dt.Rows)
{
if (fdr.Geometry.EnvelopeInternal.Intersects(map.Envelope))
{
var file = fdr[_fieldName] as string;
if (!Path.IsPathRooted(file))
{
file = Path.Combine(Path.GetDirectoryName(_fileName), file);
}
if (file == null)
{
continue;
}
if (_logger.IsDebugEnabled)
{
_logger.Debug("Drawing " + file);
}
if (!_openDatasets.ContainsKey(file))
{
OpenDataset(file);
_openDatasets.Add(file, new CacheHolder()
{
Bands = Bands,
Dataset = _gdalDataset,
Envelope = _envelope,
HistoBounds = HistoBounds,
ImageSize = _imageSize,
Projection = Projection
});
}
else
{
CacheHolder hld = _openDatasets[file];
Bands = hld.Bands;
_gdalDataset = hld.Dataset;
_envelope = hld.Envelope;
HistoBounds = hld.HistoBounds;
_imageSize = hld.ImageSize;
Projection = hld.Projection;
}
//base.Render(g, map);
_envelope = null;
_gdalDataset = null;
}
}
}
catch (Exception)
{
_shapeFile.Close();
}
}
/// <summary>
/// Transforms a <see cref="ILineString"/> to an array of <see cref="PointF"/>s.
/// </summary>
/// <param name="self">The linestring</param>
/// <param name="map">The map that defines the affine coordinate transformation</param>
/// <returns>The array of <see cref="PointF"/>s</returns>
public static PointF[] TransformToImage(this ILineString self, MapViewport map)
{
return(TransformToImage(self.Coordinates, map));
}
protected override void KeyDown(MapDocument document, MapViewport viewport, PerspectiveCamera camera, ViewportEvent e)
{
HandleKeyDown(e);
base.KeyDown(document, viewport, camera, e);
}
/// <summary>
/// Method to perform symbolization
/// </summary>
/// <param name="g">The graphics object to symbolize upon</param>
/// <param name="map">The map</param>
public override void Symbolize(Graphics g, MapViewport map)
{
Outline.Symbolize(g, map);
base.Symbolize(g, map);
}
/// <summary>
/// Method to indicate that the symbolizer has to be prepared.
/// </summary>
/// <param name="g">The graphics object</param>
/// <param name="map">The map</param>
/// <param name="aproximateNumberOfGeometries">The approximate number of geometries</param>
public void Begin(Graphics g, MapViewport map, int aproximateNumberOfGeometries)
{
}
/// <summary>
/// Method to indicate that the symbolizers work is done and it can clean up.
/// </summary>
/// <param name="g">The graphics object</param>
/// <param name="map">The map</param>
public void End(Graphics g, MapViewport map)
{
}
public override void Drag(MapDocument document, MapViewport viewport, OrthographicCamera camera,
ViewportEvent e,
Vector3 lastPosition, Vector3 position)
{
_skewEnd = position;
}
public override void EndDrag(MapDocument document, MapViewport viewport, OrthographicCamera camera,
ViewportEvent e, Vector3 position)
{
_skewStart = _skewEnd = null;
base.EndDrag(document, viewport, camera, e, position);
}
/// <summary>
/// Method to indicate that the symbolizers work is done and it can clean up.
/// </summary>
/// <param name="g">The graphics object</param>
/// <param name="map">The map</param>
public void End(Graphics g, MapViewport map)
{
_polygonSymbolizer.End(g, map);
_lineSymbolizer.End(g, map);
_pointSymbolizer.End(g, map);
}
public static Coordinate MapToWorld(PointF p, MapViewport map)
{
var coords = MapToWorld(new [] { p }, map.Center, map.Zoom, map.MapHeight, map.PixelWidth, map.PixelHeight);
return(coords[0]);
}
/// <summary>
/// Method to indicate that the symbolizer has to be prepared.
/// </summary>
/// <param name="g">The graphics object</param>
/// <param name="map">The map</param>
/// <param name="aproximateNumberOfGeometries">The approximate number of geometries</param>
public void Begin(Graphics g, MapViewport map, int aproximateNumberOfGeometries)
{
_lineSymbolizer.Begin(g, map, aproximateNumberOfGeometries);
_pointSymbolizer.Begin(g, map, aproximateNumberOfGeometries);
_polygonSymbolizer.Begin(g, map, aproximateNumberOfGeometries);
}
public override void EndDrag(MapViewport viewport, OrthographicCamera camera, ViewportEvent e, Vector3 position)
{
_rotateStart = _rotateEnd = null;
base.EndDrag(viewport, camera, e, position);
}
public override void Drag(MapViewport viewport, OrthographicCamera camera, ViewportEvent e,
Vector3 lastPosition, Vector3 position)
{
_rotateEnd = position;
}
/// <summary>
/// Renders the layer using the current viewport
/// </summary>
/// <param name="g">Graphics object reference</param>
/// <param name="map">Map which is rendered</param>
public virtual void Render(Graphics g, MapViewport map)
{
Render(g, map, out _);
}
public Matrix4x4?GetTransformationMatrix(MapViewport viewport, OrthographicCamera camera, BoxState state, MapDocument doc)
{
var shearUpDown = Handle == ResizeHandle.Left || Handle == ResizeHandle.Right;
var shearTopRight = Handle == ResizeHandle.Top || Handle == ResizeHandle.Right;
if (!_skewStart.HasValue || !_skewEnd.HasValue)
{
return(null);
}
var nsmd = _skewEnd.Value - _skewStart.Value;
var mouseDiff = State.Tool.SnapIfNeeded(nsmd);
if (KeyboardState.Shift && !KeyboardState.Alt)
{
// todo post-beta: this is hard-coded to only work on the square grid
var gridData = doc.Map.Data.GetOne <GridData>();
if (gridData?.Grid is SquareGrid sg && gridData?.SnapToGrid == true)
{
mouseDiff = nsmd.Snap(sg.Step / 2);
}
}
var relative = camera.Flatten(state.OrigEnd - state.OrigStart);
var shearOrigin = (shearTopRight) ? state.OrigStart : state.OrigEnd;
var shearAmount = new Vector3(mouseDiff.X / relative.Y, mouseDiff.Y / relative.X, 0);
if (!shearTopRight)
{
shearAmount *= -1;
}
var shearMatrix = Matrix4x4.Identity;
var sax = shearAmount.X;
var say = shearAmount.Y;
switch (camera.ViewType)
{
case OrthographicCamera.OrthographicType.Top:
if (shearUpDown)
{
shearMatrix.M12 = say;
}
else
{
shearMatrix.M21 = sax;
}
break;
case OrthographicCamera.OrthographicType.Front:
if (shearUpDown)
{
shearMatrix.M23 = say;
}
else
{
shearMatrix.M32 = sax;
}
break;
case OrthographicCamera.OrthographicType.Side:
if (shearUpDown)
{
shearMatrix.M13 = say;
}
else
{
shearMatrix.M31 = sax;
}
break;
}
var stran = Matrix4x4.CreateTranslation(-shearOrigin.X, -shearOrigin.Y, -shearOrigin.Z);
var shear = Matrix4x4.Multiply(stran, shearMatrix);
var inv = Matrix4x4.Invert(stran, out var i) ? i : Matrix4x4.Identity;
return(Matrix4x4.Multiply(shear, inv));
}
/// <summary>
/// Renders the layer using the current viewport
/// </summary>
/// <param name="g">Graphics object reference</param>
/// <param name="map">Map which is rendered</param>
/// <returns>Rectangle enclosing the actual area rendered on the graphics canvas</returns>
Rectangle ILayerEx.Render(Graphics g, MapViewport map)
{
Render(g, map, out var canvasArea);
return(canvasArea);
}
/// <summary>
/// Method to render this layer to the map, applying <paramref name="theme"/>.
/// </summary>
/// <param name="g">The graphics object</param>
/// <param name="map">The map object</param>
/// <param name="envelope">The envelope to render</param>
/// <param name="theme">The theme to apply</param>
protected void RenderInternal(Graphics g, MapViewport map, Envelope envelope, ITheme theme)
{
var ds = new FeatureDataSet();
lock (_dataSource)
{
DataSource.Open();
DataSource.ExecuteIntersectionQuery(envelope, ds);
DataSource.Close();
}
double scale = map.GetMapScale((int)g.DpiX);
double zoom = map.Zoom;
foreach (FeatureDataTable features in ds.Tables)
{
// Transform geometries if necessary
if (CoordinateTransformation != null)
{
for (int i = 0; i < features.Count; i++)
{
features[i].Geometry = ToTarget(features[i].Geometry);
}
}
//Linestring outlines is drawn by drawing the layer once with a thicker line
//before drawing the "inline" on top.
if (Style.EnableOutline)
{
for (int i = 0; i < features.Count; i++)
{
var feature = features[i];
var outlineStyle = theme.GetStyle(feature) as VectorStyle;
if (outlineStyle == null)
{
continue;
}
if (!(outlineStyle.Enabled && outlineStyle.EnableOutline))
{
continue;
}
double compare = outlineStyle.VisibilityUnits == VisibilityUnits.ZoomLevel ? zoom : scale;
if (!(outlineStyle.MinVisible <= compare && compare <= outlineStyle.MaxVisible))
{
continue;
}
using (outlineStyle = outlineStyle.Clone())
{
if (outlineStyle != null)
{
//Draw background of all line-outlines first
if (feature.Geometry is ILineString)
{
VectorRenderer.DrawLineString(g, feature.Geometry as ILineString, outlineStyle.Outline,
map, outlineStyle.LineOffset);
}
else if (feature.Geometry is IMultiLineString)
{
VectorRenderer.DrawMultiLineString(g, feature.Geometry as IMultiLineString,
outlineStyle.Outline, map, outlineStyle.LineOffset);
}
}
}
}
}
for (int i = 0; i < features.Count; i++)
{
var feature = features[i];
var style = theme.GetStyle(feature);
if (style == null)
{
continue;
}
if (!style.Enabled)
{
continue;
}
double compare = style.VisibilityUnits == VisibilityUnits.ZoomLevel ? zoom : scale;
if (!(style.MinVisible <= compare && compare <= style.MaxVisible))
{
continue;
}
IEnumerable <IStyle> stylesToRender = GetStylesToRender(style);
if (stylesToRender == null)
{
return;
}
foreach (var vstyle in stylesToRender)
{
if (!(vstyle is VectorStyle) || !vstyle.Enabled)
{
continue;
}
using (var clone = (vstyle as VectorStyle).Clone())
{
if (clone != null)
{
RenderGeometry(g, map, feature.Geometry, clone);
}
}
}
}
}
}
/// <summary>
/// Method to indicate that the symbolizer should do its symbolizer work.
/// </summary>
/// <param name="g">The graphics object</param>
/// <param name="map">The map</param>
public void Symbolize(Graphics g, MapViewport map)
{
}
/// <summary>
/// Method to render this layer to the map, applying <see cref="Style"/>.
/// </summary>
/// <param name="g">The graphics object</param>
/// <param name="map">The map object</param>
/// <param name="envelope">The envelope to render</param>
protected void RenderInternal(Graphics g, MapViewport map, Envelope envelope)
{
//if style is not enabled, we don't need to render anything
if (!Style.Enabled)
{
return;
}
IEnumerable <IStyle> stylesToRender = GetStylesToRender(Style);
if (stylesToRender == null)
{
return;
}
foreach (var style in stylesToRender)
{
if (!(style is VectorStyle) || !style.Enabled)
{
continue;
}
using (var vStyle = (style as VectorStyle).Clone())
{
if (vStyle != null)
{
Collection <IGeometry> geoms;
// Is datasource already open?
lock (_dataSource)
{
bool alreadyOpen = DataSource.IsOpen;
// If not open yet, open it
if (!alreadyOpen)
{
DataSource.Open();
}
// Read data
geoms = DataSource.GetGeometriesInView(envelope);
if (_logger.IsDebugEnabled)
{
_logger.DebugFormat("Layer {0}, NumGeometries {1}", LayerName, geoms.Count);
}
// If was not open, close it
if (!alreadyOpen)
{
DataSource.Close();
}
}
// Transform geometries if necessary
if (CoordinateTransformation != null)
{
for (int i = 0; i < geoms.Count; i++)
{
geoms[i] = ToTarget(geoms[i]);
}
}
if (vStyle.LineSymbolizer != null)
{
vStyle.LineSymbolizer.Begin(g, map, geoms.Count);
}
else
{
//Linestring outlines is drawn by drawing the layer once with a thicker line
//before drawing the "inline" on top.
if (vStyle.EnableOutline)
{
foreach (var geom in geoms)
{
if (geom != null)
{
//Draw background of all line-outlines first
if (geom is ILineString)
{
VectorRenderer.DrawLineString(g, geom as ILineString, vStyle.Outline, map, vStyle.LineOffset);
}
else if (geom is IMultiLineString)
{
VectorRenderer.DrawMultiLineString(g, geom as IMultiLineString, vStyle.Outline, map, vStyle.LineOffset);
}
}
}
}
}
foreach (IGeometry geom in geoms)
{
if (geom != null)
{
RenderGeometry(g, map, geom, vStyle);
}
}
if (vStyle.LineSymbolizer != null)
{
vStyle.LineSymbolizer.Symbolize(g, map);
vStyle.LineSymbolizer.End(g, map);
}
}
}
}
}
protected override void KeyDown(MapDocument document, MapViewport viewport, OrthographicCamera camera, ViewportEvent e)
{
HandleKeyDown(e);
base.KeyDown(document, viewport, camera, e);
}
/// <summary>
/// Method to render <paramref name="feature"/> using <paramref name="style"/>
/// </summary>
/// <param name="g">The graphics object</param>
/// <param name="map">The map</param>
/// <param name="feature">The feature's geometry</param>
/// <param name="style">The style to apply</param>
protected void RenderGeometry(Graphics g, MapViewport map, IGeometry feature, VectorStyle style)
{
if (feature == null)
{
return;
}
var geometryType = feature.OgcGeometryType;
switch (geometryType)
{
case OgcGeometryType.Polygon:
if (style.EnableOutline)
{
VectorRenderer.DrawPolygon(g, (IPolygon)feature, style.Fill, style.Outline, _clippingEnabled,
map);
}
else
{
VectorRenderer.DrawPolygon(g, (IPolygon)feature, style.Fill, null, _clippingEnabled, map);
}
break;
case OgcGeometryType.MultiPolygon:
if (style.EnableOutline)
{
VectorRenderer.DrawMultiPolygon(g, (IMultiPolygon)feature, style.Fill, style.Outline,
_clippingEnabled, map);
}
else
{
VectorRenderer.DrawMultiPolygon(g, (IMultiPolygon)feature, style.Fill, null, _clippingEnabled,
map);
}
break;
case OgcGeometryType.LineString:
if (style.LineSymbolizer != null)
{
style.LineSymbolizer.Render(map, (ILineString)feature, g);
return;
}
VectorRenderer.DrawLineString(g, (ILineString)feature, style.Line, map, style.LineOffset);
return;
case OgcGeometryType.MultiLineString:
if (style.LineSymbolizer != null)
{
style.LineSymbolizer.Render(map, (IMultiLineString)feature, g);
return;
}
VectorRenderer.DrawMultiLineString(g, (IMultiLineString)feature, style.Line, map, style.LineOffset);
break;
case OgcGeometryType.Point:
if (style.PointSymbolizer != null)
{
VectorRenderer.DrawPoint(style.PointSymbolizer, g, (IPoint)feature, map);
return;
}
if (style.Symbol != null || style.PointColor == null)
{
VectorRenderer.DrawPoint(g, (IPoint)feature, style.Symbol, style.SymbolScale, style.SymbolOffset,
style.SymbolRotation, map);
return;
}
VectorRenderer.DrawPoint(g, (IPoint)feature, style.PointColor, style.PointSize, style.SymbolOffset, map);
break;
case OgcGeometryType.MultiPoint:
if (style.PointSymbolizer != null)
{
VectorRenderer.DrawMultiPoint(style.PointSymbolizer, g, (IMultiPoint)feature, map);
}
if (style.Symbol != null || style.PointColor == null)
{
VectorRenderer.DrawMultiPoint(g, (IMultiPoint)feature, style.Symbol, style.SymbolScale,
style.SymbolOffset, style.SymbolRotation, map);
}
else
{
VectorRenderer.DrawMultiPoint(g, (IMultiPoint)feature, style.PointColor, style.PointSize, style.SymbolOffset, map);
}
break;
case OgcGeometryType.GeometryCollection:
var coll = (IGeometryCollection)feature;
for (var i = 0; i < coll.NumGeometries; i++)
{
IGeometry geom = coll[i];
RenderGeometry(g, map, geom, style);
}
break;
default:
break;
}
}
/// <summary>
/// Method to perform preparatory work for symbilizing.
/// </summary>
/// <param name="g">The graphics object to symbolize upon</param>
/// <param name="map">The map</param>
/// <param name="aproximateNumberOfGeometries">An approximate number of geometries to symbolize</param>
public override void Begin(Graphics g, MapViewport map, int aproximateNumberOfGeometries)
{
Outline.Begin(g, map, aproximateNumberOfGeometries);
base.Begin(g, map, aproximateNumberOfGeometries);
}
/// <summary>
/// Renders the layer
/// </summary>
/// <param name="graphics">Graphics object reference</param>
/// <param name="map">Map which is rendered</param>
public override void Render(Graphics graphics, MapViewport map)
{
var bbox = map.Envelope;
var extent = new Extent(bbox.MinX, bbox.MinY, bbox.MaxX, bbox.MaxY);
#pragma warning disable CS0618 // Type or member is obsolete
var level = BruTile.Utilities.GetNearestLevel(_source.Schema.Resolutions, map.PixelSize);
#pragma warning restore CS0618 // Type or member is obsolete
var tiles = _source.Schema.GetTileInfos(extent, level);
//Abort previous running Threads
Cancel();
using (var ia = new ImageAttributes())
{
if (!_transparentColor.IsEmpty)
{
ia.SetColorKey(_transparentColor, _transparentColor);
}
ia.SetColorMatrix(new ColorMatrix {
Matrix33 = _opacity
}, ColorMatrixFlag.Default, ColorAdjustType.Bitmap);
#if !PocketPC
ia.SetWrapMode(WrapMode.TileFlipXY);
#endif
var tileWidth = _source.Schema.GetTileWidth(level);
var tileHeight = _source.Schema.GetTileHeight(level);
foreach (TileInfo info in tiles)
{
if (_bitmaps.Find(info.Index) != null)
{
//draws directly the bitmap
var bb = new Envelope(new Coordinate(info.Extent.MinX, info.Extent.MinY),
new Coordinate(info.Extent.MaxX, info.Extent.MaxY));
HandleMapNewTileAvaliable(map, graphics, bb, _bitmaps.Find(info.Index),
tileWidth, tileHeight, ia);
}
else if (_fileCache != null && _fileCache.Exists(info.Index))
{
Bitmap img = GetImageFromFileCache(info) as Bitmap;
_bitmaps.Add(info.Index, img);
//draws directly the bitmap
var btExtent = info.Extent;
var bb = new Envelope(new Coordinate(btExtent.MinX, btExtent.MinY),
new Coordinate(btExtent.MaxX, btExtent.MaxY));
HandleMapNewTileAvaliable(map, graphics, bb, _bitmaps.Find(info.Index),
tileWidth, tileHeight, ia);
}
else
{
var cancelToken = new CancellationTokenSource();
var token = cancelToken.Token;
var l_info = info;
if (Logger.IsDebugEnabled)
{
Logger.DebugFormat("Starting new Task to download tile {0},{1},{2}", info.Index.Level, info.Index.Col, info.Index.Row);
}
var t = new System.Threading.Tasks.Task(delegate
{
if (token.IsCancellationRequested)
{
token.ThrowIfCancellationRequested();
}
if (Logger.IsDebugEnabled)
{
Logger.DebugFormat("Task started for download of tile {0},{1},{2}", info.Index.Level, info.Index.Col, info.Index.Row);
}
var res = GetTileOnThread(token, _source, l_info, _bitmaps, true);
if (res)
{
Interlocked.Decrement(ref _numPendingDownloads);
DownloadProgressChanged?.Invoke(_numPendingDownloads);
}
}, token);
var dt = new DownloadTask()
{
CancellationToken = cancelToken, Task = t
};
lock (_currentTasks)
{
_currentTasks.Add(dt);
_numPendingDownloads++;
}
t.Start();
}
}
}
}
/// <summary>
/// Method to restore the state of the graphics object and do cleanup work.
/// </summary>
/// <param name="g">The graphics object to symbolize upon</param>
/// <param name="map">The map</param>
public override void End(Graphics g, MapViewport map)
{
Outline.End(g, map);
base.End(g, map);
}
/// <summary>
/// Method to indicate that the symbolizer has to be prepared.
/// </summary>
public override void Begin(Graphics g, MapViewport map, int aproximateNumberOfGeometries)
{
_graphicsPaths = new List <GraphicsPath>(aproximateNumberOfGeometries);
base.Begin(g, map, aproximateNumberOfGeometries);
}
/// <summary>
/// Renders the layer
/// </summary>
/// <param name="graphics">Graphics object reference</param>
/// <param name="map">Map which is rendered</param>
public override void Render(Graphics graphics, MapViewport map)
{
if (!map.Size.IsEmpty && map.Size.Width > 0 && map.Size.Height > 0)
{
var bmp = new Bitmap(map.Size.Width, map.Size.Height, PixelFormat.Format32bppArgb);
using (var g = Graphics.FromImage(bmp))
{
g.InterpolationMode = InterpolationMode;
g.Transform = graphics.Transform.Clone();
var extent = new Extent(map.Envelope.MinX, map.Envelope.MinY,
map.Envelope.MaxX, map.Envelope.MaxY);
var level = BruTile.Utilities.GetNearestLevel(_source.Schema.Resolutions, Math.Max(map.PixelWidth, map.PixelHeight));
var tiles = new List <TileInfo>(_source.Schema.GetTileInfos(extent, level));
var tileWidth = _source.Schema.GetTileWidth(level);
var tileHeight = _source.Schema.GetTileWidth(level);
IList <WaitHandle> waitHandles = new List <WaitHandle>();
var toRender = new System.Collections.Concurrent.ConcurrentDictionary <TileIndex, Bitmap>();
var takenFromCache = new System.Collections.Concurrent.ConcurrentDictionary <TileIndex, bool>();
foreach (TileInfo info in tiles)
{
var image = _bitmaps.Find(info.Index);
if (image != null)
{
toRender.TryAdd(info.Index, image);
takenFromCache.TryAdd(info.Index, true);
continue;
}
if (_fileCache != null && _fileCache.Exists(info.Index))
{
var tileBitmap = GetImageFromFileCache(info) as Bitmap;
_bitmaps.Add(info.Index, tileBitmap);
toRender.TryAdd(info.Index, tileBitmap);
takenFromCache.TryAdd(info.Index, true);
continue;
}
var waitHandle = new AutoResetEvent(false);
waitHandles.Add(waitHandle);
ThreadPool.QueueUserWorkItem(GetTileOnThread,
new object[] { _source, info, toRender, waitHandle, true, takenFromCache });
}
foreach (var handle in waitHandles)
{
handle.WaitOne();
}
using (var ia = new ImageAttributes())
{
if (!_transparentColor.IsEmpty)
{
ia.SetColorKey(_transparentColor, _transparentColor);
}
#if !PocketPC
ia.SetWrapMode(WrapMode.TileFlipXY);
#endif
foreach (var info in tiles)
{
if (!toRender.ContainsKey(info.Index))
{
continue;
}
var bitmap = toRender[info.Index];//_bitmaps.Find(info.Index);
if (bitmap == null)
{
continue;
}
var min = map.WorldToImage(new Coordinate(info.Extent.MinX, info.Extent.MinY));
var max = map.WorldToImage(new Coordinate(info.Extent.MaxX, info.Extent.MaxY));
min = new PointF((float)Math.Round(min.X), (float)Math.Round(min.Y));
max = new PointF((float)Math.Round(max.X), (float)Math.Round(max.Y));
try
{
g.DrawImage(bitmap,
new Rectangle((int)min.X, (int)max.Y, (int)(max.X - min.X),
(int)(min.Y - max.Y)),
0, 0, tileWidth, tileHeight,
GraphicsUnit.Pixel,
ia);
}
catch (Exception ee)
{
Logger.Error(ee.Message);
}
}
}
//Add rendered tiles to cache
foreach (var kvp in toRender)
{
if (takenFromCache.ContainsKey(kvp.Key) && !takenFromCache[kvp.Key])
{
_bitmaps.Add(kvp.Key, kvp.Value);
}
}
graphics.Transform = new Matrix();
graphics.DrawImageUnscaled(bmp, 0, 0);
graphics.Transform = g.Transform;
}
}
}
/// <summary>
/// Method to indicate that the symbolizer should do its symbolizer work.
/// </summary>
public override void Symbolize(Graphics g, MapViewport map)
{
Symbolize(g, map, Paths);
}
/// <summary>
/// Renders the layer
/// </summary>
/// <param name="g">Graphics object reference</param>
/// <param name="map">Map which is rendered</param>
public override void Render(Graphics g, MapViewport map)
{
if (Logger.IsDebugEnabled)
{
Logger.Debug("Rendering wmslayer: " + LayerName);
}
Client.WmsOnlineResource resource = GetPreferredMethod();
var myUri = new Uri(GetRequestUrl(map.Envelope, map.Size));
if (Logger.IsDebugEnabled)
{
Logger.Debug("Url: " + myUri);
}
var myWebRequest = WebRequest.Create(myUri);
myWebRequest.Method = resource.Type;
myWebRequest.Timeout = TimeOut;
if (myWebRequest is HttpWebRequest)
{
(myWebRequest as HttpWebRequest).Accept = _mimeType;
(myWebRequest as HttpWebRequest).KeepAlive = false;
(myWebRequest as HttpWebRequest).UserAgent = "SharpMap-WMSLayer";
}
if (Credentials != null)
{
myWebRequest.Credentials = Credentials;
myWebRequest.PreAuthenticate = true;
}
else
{
myWebRequest.Credentials = CredentialCache.DefaultCredentials;
}
if (Proxy != null)
{
myWebRequest.Proxy = Proxy;
}
try
{
if (Logger.IsDebugEnabled)
{
Logger.Debug("Beginning request");
}
using (var myWebResponse = (HttpWebResponse)myWebRequest.GetResponse())
{
if (Logger.IsDebugEnabled)
{
Logger.Debug("Got response");
}
using (var dataStream = myWebResponse.GetResponseStream())
{
if (dataStream != null && myWebResponse.ContentType.StartsWith("image"))
{
if (Logger.IsDebugEnabled)
{
Logger.Debug("Reading image from stream");
}
var cLength = (int)myWebResponse.ContentLength;
if (Logger.IsDebugEnabled)
{
Logger.Debug("Content-Length: " + cLength);
}
Image img;
using (var ms = new MemoryStream())
{
var buf = new byte[50000];
int numRead = 0;
DateTime lastTimeGotData = DateTime.Now;
var moreToRead = true;
do
{
try
{
int nr = dataStream.Read(buf, 0, buf.Length);
ms.Write(buf, 0, nr);
numRead += nr;
if (nr == 0)
{
int testByte = dataStream.ReadByte();
if (testByte == -1)
{
//moreToRead = false;
break;
}
if ((DateTime.Now - lastTimeGotData).TotalSeconds > TimeOut)
{
if (Logger.IsInfoEnabled)
{
Logger.Info("Did not get any data for " + TimeOut +
" seconds, aborting");
}
return;
}
if (Logger.IsDebugEnabled)
{
Logger.Debug("No data to read. Have received: " +
numRead + " of " + cLength);
}
//Did not get data... sleep for a while to not spin
System.Threading.Thread.Sleep(10);
}
else
{
lastTimeGotData = DateTime.Now;
}
}
catch (IOException /*ee*/)
{
//This can be valid since in some cases .NET failed to parse 0-sized chunks in responses..
//For now, just safely ignore the exception and assume we read all data...
//Either way we will get an error later if we did not..
moreToRead = false;
}
catch (Exception ee)
{
Logger.Error("Error reading from WMS-server..", ee);
throw;
}
} while (moreToRead);
if (Logger.IsDebugEnabled)
{
Logger.Debug("Have received: " + numRead);
}
ms.Seek(0, SeekOrigin.Begin);
img = Image.FromStream(ms);
}
if (Logger.IsDebugEnabled)
{
Logger.Debug("Image read.. Drawing");
}
if (Opacity < 1f)
{
using (var ia = CreateImageAttributes(Opacity))
{
g.DrawImage(img, new Rectangle(0, 0, img.Width, img.Height), 0, 0,
img.Width, img.Height, GraphicsUnit.Pixel, ia);
}
}
else
{
g.DrawImage(img, Rectangle.FromLTRB(0, 0, map.Size.Width, map.Size.Height));
}
if (Logger.IsDebugEnabled)
{
Logger.Debug("Draw complete");
}
dataStream.Close();
}
}
myWebResponse.Close();
}
}
catch (WebException webEx)
{
if (!_continueOnError)
{
throw (new RenderException(
"There was a problem connecting to the WMS server when rendering layer '" + LayerName + "'",
webEx));
}
Logger.Error("There was a problem connecting to the WMS server when rendering layer '" + LayerName +
"'", webEx);
}
catch (Exception ex)
{
if (!_continueOnError)
{
throw (new RenderException("There was a problem rendering layer '" + LayerName + "'", ex));
}
Logger.Error("There was a problem connecting to the WMS server when rendering layer '" + LayerName +
"'", ex);
}
// Obsolete (and will cause infinite loop)
//base.Render(g, map);
}
private void Awake()
{
mView = Object.FindObjectOfType <MapViewport>();
}