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="features">Features to be included in this datasource</param>
public MemoryProvider(IEnumerable <IFeature> features)
{
CRS = "";
Features = new Features();
foreach (var feature in features)
{
Features.Add(feature);
}
}
private static Features CreateFeatures(IEnumerable<IGeometry> randomPoints)
{
var features = new Features();
var counter = 0;
foreach (var point in randomPoints)
{
features.Add(new Feature { Geometry = point, ["Label"] = counter++.ToString() });
}
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)
{
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="features">Features to be included in this datasource</param>
public MemoryProvider(IEnumerable <IFeature> features)
{
CRS = "";
var localFeatures = new Features();
foreach (var feature in features)
{
localFeatures.Add(feature);
}
_features = localFeatures;
}
/// <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 void DeleteFeatureReferenceType()
{
// Arrange
const string keyField = "thekeyfield";
var features = new Features(keyField);
var feature1 = new Feature();
feature1[keyField] = "a";
features.Add(feature1);
var feature2 = new Feature();
feature2[keyField] = "b";
features.Add(feature2);
// Act
var first = features.First(f => f[keyField].Equals("a"));
features.Delete(first[keyField]);
// Assert
Assert.IsFalse(features.Any(f => f[keyField].Equals("a")));
}
private static MemoryProvider CreateRandomPointsProvider(BoundingBox box)
{
var randomPoints = PointLayerSample.GenerateRandomPoints(box, 200);
var features = new Features();
var count = 0;
foreach (var point in randomPoints)
{
var feature = new Feature { Geometry = point };
feature["Label"] = count.ToString(CultureInfo.InvariantCulture);
features.Add(feature);
count++;
}
return new MemoryProvider(features);
}
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;
}
private static MemoryProvider CreateRandomPointsProvider(IEnumerable<IGeometry> randomPoints)
{
var features = new Features();
var count = 0;
foreach (var point in randomPoints)
{
var feature = new Feature
{
Geometry = point,
[LabelColumn] = count.ToString(CultureInfo.InvariantCulture)
};
features.Add(feature);
count++;
}
return new MemoryProvider(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);
}
private static ILayer CreateMutatingTriangleLayer(BoundingBox envelope)
{
var layer = new MemoryLayer();
var polygon = new Polygon(new LinearRing(GenerateRandomPoints(envelope, 3)));
var feature = new Feature() { Geometry = polygon };
var features = new Features();
features.Add(feature);
layer.DataSource = new MemoryProvider(features);
PeriodicTask.Run(() =>
{
polygon.ExteriorRing = new LinearRing(GenerateRandomPoints(envelope, 3));
// Clear cache for change to show
feature.RenderedGeometry.Clear();
// Trigger DataChanged notification
layer.ViewChanged(true, layer.Envelope, 1);
},
TimeSpan.FromMilliseconds(1000));
return layer;
}
/// <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="features">Features to be included in this datasource</param>
public MemoryProvider(IEnumerable<IFeature> features)
{
CRS = "";
Features = new Features();
foreach (var feature in features) Features.Add(feature);
}
private MemoryProvider CreateRandomPointsProvider()
{
var randomPoints = PointLayerSample.GenerateRandomPoints(MapControl.Map.Envelope, 100);
var features = new Features();
var count = 0;
foreach (var point in randomPoints)
{
var feature = new Feature { Geometry = point };
feature["Label"] = count.ToString(CultureInfo.InvariantCulture);
features.Add(feature);
count++;
}
return new MemoryProvider(features);
}
/// <summary>
/// Initializes a new instance of the <see cref="MemoryProvider"/>
/// </summary>
/// <param name="feature">Feature to be in this datasource</param>
public MemoryProvider(IFeature feature)
{
SRID = -1;
Features = new Features();
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)
{
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="feature">Feature to be in this datasource</param>
public MemoryProvider(IFeature feature)
{
SRID = -1;
Features = new Features();
Features.Add(feature);
}
public IEnumerable<IFeature> GetFeaturesInView(BoundingBox box, double resolution)
{
lock (_syncRoot)
{
Open();
try
{
//Use the spatial index to get a list of features whose boundingbox intersects bbox
var objectlist = GetObjectIDsInView(box);
var features = new Features();
foreach (var index in objectlist)
{
var feature = _dbaseFile != null ? _dbaseFile.GetFeature(index, features) : new Feature();
feature.Geometry = ReadGeometry(index);
if (feature.Geometry == null) continue;
if (!feature.Geometry.GetBoundingBox().Intersects(box)) continue;
if (FilterDelegate != null && !FilterDelegate(feature)) continue;
features.Add(feature);
}
return features;
}
finally
{
Close();
}
}
}
public IEnumerable<IFeature> GetFeaturesInView(BoundingBox box, double resolution)
{
//Use the spatial index to get a list of features whose boundingbox intersects bbox
Collection<uint> objectlist = GetObjectIDsInView(box);
IFeatures features = new Features();
foreach (uint index in objectlist)
{
IFeature feature = dbaseFile.GetFeature(index, features);
feature.Geometry = ReadGeometry(index);
if (feature.Geometry != null)
if (feature.Geometry.GetBoundingBox().Intersects(box))
if (FilterDelegate == null || FilterDelegate(feature))
features.Add(feature);
}
return features;
}
