/// <summary>
/// Fills the given simple scene with objects inside the given view and for the given zoomFactor.
/// </summary>
/// <param name="scene"></param>
/// <param name="view"></param>
/// <param name="zoomFactor"></param>
public void Get(Scene2DSimple scene, View2D view, float zoomFactor)
{
lock (_stream) { // make sure there is only synchonous access to the stream.
// check what is in the non-simplified scene.
IScene2DPrimitivesSource simpleSource = this.GetNonSimplifiedStream();
simpleSource.Get(scene, view, zoomFactor);
// check what index this zoomfactor is for.
int idx = this.SearchForScene(zoomFactor);
if (idx >= 0) // the index was found.
{
if (!_loadedScenes.TryGetValue(idx, out simpleSource)) // the scene was not found.
{
long position = _index.SceneIndexes [idx];
_stream.Seek(position, SeekOrigin.Begin);
LimitedStream stream = new LimitedStream(_stream);
//Scene2DRTreeSerializer serializer = new Scene2DRTreeSerializer(true);
//simpleSource = new Scene2DPrimitivesSource(serializer.Deserialize(stream));
OsmSharp.UI.Renderer.Scene.Storage.Styled.Scene2DStyledSerializer serializer =
new Styled.Scene2DStyledSerializer();
simpleSource = serializer.Deserialize(stream, true);
_loadedScenes.Add(idx, simpleSource);
}
simpleSource.Get(scene, view, zoomFactor);
OsmSharp.Logging.Log.TraceEvent("Scene2DLayeredSource", System.Diagnostics.TraceEventType.Verbose,
string.Format("Deserialized from scene at zoom {0} and idx {1} synchronized.", zoomFactor, idx));
}
}
}
/// <summary>
/// Adds a new scene layer with the given primitives source as it's source.
/// </summary>
/// <param name="scene"></param>
/// <returns></returns>
public LayerScene AddLayerScene(IScene2DPrimitivesSource scene)
{
LayerScene layerScene = new LayerScene(scene);
this.AddLayer(layerScene);
return(layerScene);
}
/// <summary>
/// Returns the non-simplified scene.
/// </summary>
/// <returns></returns>
private IScene2DPrimitivesSource GetNonSimplifiedStream()
{
if (_nonSimplifiedScene == null)
{
long position = _index.SceneIndexes[_index.SceneIndexes.Length - 1];
_stream.Seek(position, SeekOrigin.Begin);
LimitedStream stream = new LimitedStream(_stream);
//Scene2DRTreeSerializer serializer = new Scene2DRTreeSerializer(true);
//_nonSimplifiedScene = new Scene2DPrimitivesSource(serializer.Deserialize(stream));
OsmSharp.UI.Renderer.Scene.Storage.Styled.Scene2DStyledSerializer serializer =
new Styled.Scene2DStyledSerializer();
_nonSimplifiedScene = serializer.Deserialize(stream, true);
}
return(_nonSimplifiedScene);
}
public void Scene2DSimpleSerializeDeserializeTest()
{
// create the MapCSS image source.
var imageSource = new MapCSSDictionaryImageSource();
// load mapcss style interpreter.
var mapCSSInterpreter = new MapCSSInterpreter(
Assembly.GetExecutingAssembly().GetManifestResourceStream(
"OsmSharp.UI.Test.Unittests.Data.MapCSS.test.mapcss"),
imageSource);
// initialize the data source.
var xmlSource = new XmlOsmStreamSource(
Assembly.GetExecutingAssembly().GetManifestResourceStream(
"OsmSharp.UI.Test.Unittests.Data.test.osm"));
IEnumerable <OsmGeo> dataSource = xmlSource;
MemoryDataSource source = MemoryDataSource.CreateFrom(xmlSource);
// get data.
var scene = new Scene2DSimple();
var projection = new WebMercator();
GeoCoordinateBox box = null;
foreach (var osmGeo in dataSource)
{
CompleteOsmGeo completeOsmGeo = null;
switch (osmGeo.Type)
{
case OsmGeoType.Node:
completeOsmGeo = CompleteNode.CreateFrom(osmGeo as Node);
break;
case OsmGeoType.Way:
completeOsmGeo = CompleteWay.CreateFrom(osmGeo as Way,
source);
break;
case OsmGeoType.Relation:
completeOsmGeo = CompleteRelation.CreateFrom(osmGeo as Relation,
source);
break;
}
// update box.
if (completeOsmGeo != null)
{
if (box == null)
{
box = completeOsmGeo.BoundingBox;
}
else if (completeOsmGeo.BoundingBox != null)
{
box = box + completeOsmGeo.BoundingBox;
}
}
// translate each object into scene object.
mapCSSInterpreter.Translate(scene, projection, source, osmGeo as OsmGeo);
}
// create the stream.
var stream = new MemoryStream();
scene.Serialize(stream, false);
// deserialize the stream.
IScene2DPrimitivesSource sceneSource = Scene2DSimple.Deserialize(stream, false);
if (box != null)
{
// query both and get the same results.
int counter = 100;
var rand = new Random();
while (counter > 0)
{
var queryBox = new GeoCoordinateBox(
box.GenerateRandomIn(rand),
box.GenerateRandomIn(rand));
var zoomFactor = (float)projection.ToZoomFactor(15);
View2D testView = View2D.CreateFromBounds(
projection.LatitudeToY(queryBox.MaxLat),
projection.LongitudeToX(queryBox.MinLon),
projection.LatitudeToY(queryBox.MinLat),
projection.LongitudeToX(queryBox.MaxLon));
var testScene = new Scene2DSimple();
sceneSource.Get(testScene, testView, zoomFactor);
// var resultIndex = new HashSet<Scene2DPrimitive>(testScene.Get(testView, zoomFactor));
// var resultReference = new HashSet<Scene2DPrimitive>(scene.Get(testView, zoomFactor));
//Assert.AreEqual(resultReference.Count, resultIndex.Count);
//foreach (var data in resultIndex)
//{
// Assert.IsTrue(resultReference.Contains(data));
//}
//foreach (var data in resultReference)
//{
// Assert.IsTrue(resultIndex.Contains(data));
//}
counter--;
}
}
}
/// <summary>
/// Creates a new scene layer.
/// </summary>
/// <param name="index"></param>
public LayerScene(IScene2DPrimitivesSource index)
{
_index = index;
_scene2DSimple = new Scene2DSimple();
}
/// <summary>
/// Creates a new scene layer.
/// </summary>
/// <param name="index"></param>
public LayerScene(IScene2DPrimitivesSource index)
{
_index = index;
_scene2DSimple = new Scene2DSimple();
}
/// <summary>
/// Returns the non-simplified scene.
/// </summary>
/// <returns></returns>
private IScene2DPrimitivesSource GetNonSimplifiedStream()
{
if (_nonSimplifiedScene == null)
{
long position = _index.SceneIndexes[_index.SceneIndexes.Length - 1];
_stream.Seek(position, SeekOrigin.Begin);
LimitedStream stream = new LimitedStream(_stream);
//Scene2DRTreeSerializer serializer = new Scene2DRTreeSerializer(true);
//_nonSimplifiedScene = new Scene2DPrimitivesSource(serializer.Deserialize(stream));
OsmSharp.UI.Renderer.Scene.Storage.Styled.Scene2DStyledSerializer serializer =
new Styled.Scene2DStyledSerializer();
_nonSimplifiedScene = serializer.Deserialize(stream, true);
}
return _nonSimplifiedScene;
}
/// <summary>
/// Adds a new scene layer with the given primitives source as it's source.
/// </summary>
/// <param name="scene"></param>
/// <returns></returns>
public LayerScene AddLayerScene(IScene2DPrimitivesSource scene)
{
LayerScene layerScene = new LayerScene(scene);
this.AddLayer(layerScene);
return layerScene;
}
