public IEnumerable<IFeature> FetchTiles(BoundingBox boundingBox, double resolution)
{
var extent = new Extent(boundingBox.Min.X, boundingBox.Min.Y, boundingBox.Max.X, boundingBox.Max.Y);
var levelId = BruTile.Utilities.GetNearestLevel(_source.Schema.Resolutions, resolution);
var infos = _source.Schema.GetTileInfos(extent, levelId).ToList();
ICollection<WaitHandle> waitHandles = new List<WaitHandle>();
foreach (TileInfo info in infos)
{
if (_bitmaps.Find(info.Index) != null) continue;
if (_queue.Contains(info.Index)) continue;
var waitHandle = new AutoResetEvent(false);
waitHandles.Add(waitHandle);
_queue.Add(info.Index);
ThreadPool.QueueUserWorkItem(GetTileOnThread, new object[] { _source, info, _bitmaps, waitHandle });
}
WaitHandle.WaitAll(waitHandles.ToArray());
IFeatures features = new Features();
foreach (TileInfo info in infos)
{
byte[] bitmap = _bitmaps.Find(info.Index);
if (bitmap == null) continue;
IRaster raster = new Raster(new MemoryStream(bitmap), new BoundingBox(info.Extent.MinX, info.Extent.MinY, info.Extent.MaxX, info.Extent.MaxY));
IFeature feature = features.New();
feature.Geometry = raster;
features.Add(feature);
}
return features;
}
/// <summary>
/// Initializes a new instance of the <see cref="MemoryProvider"/>
/// </summary>
/// <param name="geometry">Geometry to be in this datasource</param>
public MemoryProvider(Geometry geometry)
{
SRID = -1;
Features = new Features();
IFeature feature = Features.New();
feature.Geometry = geometry;
Features.Add(feature);
}
/// <summary>
/// Initializes a new instance of the <see cref="MemoryProvider"/>
/// </summary>
/// <param name="geometry">Geometry to be in this datasource</param>
public MemoryProvider(Geometry geometry)
{
CRS = "";
Features = new Features();
IFeature feature = Features.New();
feature.Geometry = geometry;
Features.Add(feature);
SymbolSize = 64;
}
/// <summary>
/// Initializes a new instance of the <see cref="MemoryProvider"/>
/// </summary>
/// <param name="geometries">Set of geometries that this datasource should contain</param>
public MemoryProvider(IEnumerable <IGeometry> geometries)
{
CRS = "";
Features = new Features();
foreach (IGeometry geometry in geometries)
{
IFeature feature = Features.New();
feature.Geometry = geometry;
Features.Add(feature);
}
}
public System.Collections.Generic.IEnumerable<IFeature> GetFeaturesInView(BoundingBox box, double resolution)
{
var features = new Features();
IRaster raster = null;
var view = new Viewport { Resolution = resolution, Center = box.GetCentroid(), Width = (box.Width / resolution), Height = (box.Height / resolution) };
if (TryGetMap(view, ref raster))
{
IFeature feature = features.New();
feature.Styles.Add(new VectorStyle()); // this is not my fault
feature.Geometry = raster;
features.Add(feature);
}
return features;
}
public IEnumerable <IFeature> FetchTiles(BoundingBox boundingBox, double resolution)
{
var extent = new Extent(boundingBox.Min.X, boundingBox.Min.Y, boundingBox.Max.X, boundingBox.Max.Y);
int level = BruTile.Utilities.GetNearestLevel(source.Schema.Resolutions, resolution);
var infos = source.Schema.GetTilesInView(extent, level).ToList();
ICollection <WaitHandle> waitHandles = new List <WaitHandle>();
foreach (TileInfo info in infos)
{
if (bitmaps.Find(info.Index) != null)
{
continue;
}
if (queue.Contains(info.Index))
{
continue;
}
var waitHandle = new AutoResetEvent(false);
waitHandles.Add(waitHandle);
queue.Add(info.Index);
ThreadPool.QueueUserWorkItem(GetTileOnThread, new object[] { source.Provider, info, bitmaps, waitHandle });
}
foreach (WaitHandle handle in waitHandles)
{
handle.WaitOne();
}
IFeatures features = new Features();
foreach (TileInfo info in infos)
{
byte[] bitmap = bitmaps.Find(info.Index);
if (bitmap == null)
{
continue;
}
IRaster raster = new Raster(new MemoryStream(bitmap), new BoundingBox(info.Extent.MinX, info.Extent.MinY, info.Extent.MaxX, info.Extent.MaxY));
IFeature feature = features.New();
feature.Geometry = raster;
features.Add(feature);
}
return(features);
}
public static IEnumerable<IFeature> DataSetToFeatures(FeatureDataSet dataSet)
{
var features = new Features();
foreach (FeatureDataTable table in dataSet.Tables)
{
foreach (FeatureDataRow row in table)
{
IFeature feature = features.New();
feature.Geometry = row.Geometry;
foreach (DataColumn column in table.Columns)
feature[column.ColumnName] = row[column.ColumnName];
features.Add(feature);
}
}
return features;
}
public IEnumerable <IFeature> FetchTiles(BoundingBox boundingBox, double resolution)
{
var extent = new Extent(boundingBox.Min.X, boundingBox.Min.Y, boundingBox.Max.X, boundingBox.Max.Y);
var levelId = BruTile.Utilities.GetNearestLevel(_source.Schema.Resolutions, resolution);
var infos = _source.Schema.GetTileInfos(extent, levelId).ToList();
ICollection <WaitHandle> waitHandles = new List <WaitHandle>();
foreach (TileInfo info in infos)
{
if (_bitmaps.Find(info.Index) != null)
{
continue;
}
if (_queue.Contains(info.Index))
{
continue;
}
var waitHandle = new AutoResetEvent(false);
waitHandles.Add(waitHandle);
_queue.Add(info.Index);
Task.Run(() => GetTileOnThread(new object[] { _source, info, _bitmaps, waitHandle }));
}
WaitHandle.WaitAll(waitHandles.ToArray());
IFeatures features = new Features();
foreach (TileInfo info in infos)
{
byte[] bitmap = _bitmaps.Find(info.Index);
if (bitmap == null)
{
continue;
}
IRaster raster = new Raster(new MemoryStream(bitmap), new BoundingBox(info.Extent.MinX, info.Extent.MinY, info.Extent.MaxX, info.Extent.MaxY));
IFeature feature = features.New();
feature.Geometry = raster;
features.Add(feature);
}
return(features);
}
public static IEnumerable <IFeature> DataSetToFeatures(FeatureDataSet dataSet)
{
var features = new Features();
foreach (FeatureDataTable table in dataSet.Tables)
{
foreach (FeatureDataRow row in table)
{
IFeature feature = features.New();
feature.Geometry = row.Geometry;
foreach (DataColumn column in table.Columns)
{
feature[column.ColumnName] = row[column.ColumnName];
}
features.Add(feature);
}
}
return(features);
}
/// <summary>
/// Initializes a new instance of the <see cref="MemoryProvider"/>
/// </summary>
/// <param name="geometries">Set of geometries that this datasource should contain</param>
public MemoryProvider(IEnumerable<IGeometry> geometries)
{
CRS = "";
Features = new Features();
foreach (IGeometry geometry in geometries)
{
IFeature feature = Features.New();
feature.Geometry = geometry;
Features.Add(feature);
}
}
/// <summary>
/// Initializes a new instance of the <see cref="MemoryProvider"/>
/// </summary>
/// <param name="geometry">Geometry to be in this datasource</param>
public MemoryProvider(Geometry geometry)
{
CRS = "";
Features = new Features();
IFeature feature = Features.New();
feature.Geometry = geometry;
Features.Add(feature);
SymbolSize = 64;
}
/// <summary>
/// Initializes a new instance of the <see cref="MemoryProvider"/>
/// </summary>
/// <param name="geometry">Geometry to be in this datasource</param>
public MemoryProvider(Geometry geometry)
{
SRID = -1;
Features = new Features();
IFeature feature = Features.New();
feature.Geometry = geometry;
Features.Add(feature);
}
