/// <summary> Tries to download and store in cache remote tile. </summary>
public IObservable<string> Get(Tile tile)
{
string filePath = Path.Combine(_cachePath, tile.QuadKey + FormatExtension);
return FileSystemService.Exists(filePath)
? Observable.Return(filePath)
: ObservableWWW
.GetAndGetBytes(GetUrl(tile.QuadKey))
.Select(bytes =>
{
using(var stream = FileSystemService.WriteStream(filePath))
stream.Write(bytes, 0, bytes.Length);
return filePath;
});
}
public GameObject Build(Tile tile, Element element)
{
GameObject gameObject = GameObject.CreatePrimitive(PrimitiveType.Cube);
gameObject.name = GetName(element);
var transform = gameObject.transform;
transform.position = tile.Projection.Project(element.Geometry[0], GetMinHeight(element));
transform.localScale = new Vector3(2, 2, 2);
gameObject.GetComponent<MeshFilter>().mesh.uv = GetUV(element);
gameObject.GetComponent<MeshRenderer>().sharedMaterial = GetMaterial(element);
return gameObject;
}
/// <inheritdoc />
public void BuildMesh(Tile tile, Mesh mesh)
{
var gameObject = new GameObject(mesh.Name);
var uMesh = new UnityEngine.Mesh();
uMesh.vertices = mesh.Vertices;
uMesh.triangles = mesh.Triangles;
uMesh.colors = mesh.Colors;
uMesh.uv = new Vector2[mesh.Vertices.Length];
uMesh.RecalculateNormals();
gameObject.isStatic = true;
gameObject.AddComponent<MeshFilter>().mesh = uMesh;
gameObject.AddComponent<MeshRenderer>().sharedMaterial =
_customizationService.GetSharedMaterial(@"Materials/Default");
gameObject.AddComponent<MeshCollider>();
gameObject.transform.parent = tile.GameObject.transform;
}
public void CanLoadMultipleTiles()
{
// ARRANGE
SetupMapData(TestHelper.BerlinPbfData);
var count = 10;
var centerQuadKey = new QuadKey(35205, 21489, LevelOfDetails);
// ACT & ASSERT
for (var y = 0; y < count; ++y)
for (var x = 0; x < count; ++x)
{
var quadKey = new QuadKey(centerQuadKey.TileX + x, centerQuadKey.TileY + y, LevelOfDetails);
var tile = new Tile(quadKey, _tileController.Stylesheet, _tileController.Projection);
_mapDataLoader
.Load(tile)
.SubscribeOn(Scheduler.CurrentThread)
.ObserveOn(Scheduler.CurrentThread)
.Subscribe(AssertData);
}
}
/// <summary> Downloads map data for given tile. </summary>
private IObservable<Tile> CreateDownloadSequence(Tile tile)
{
// data exists in store
if (CoreLibrary.HasData(tile.QuadKey))
return Observable.Return(tile);
// data exists in cache
var filePath = GetCacheFilePath(tile);
if (_fileSystemService.Exists(filePath))
{
var errorMsg = SaveTileDataInMemory(tile, filePath);
return errorMsg == null
? Observable.Return(tile)
: Observable.Throw<Tile>(new MapDataException(Strings.CannotAddDataToInMemoryStore, errorMsg));
}
// need to download from remote server
return Observable.Create<Tile>(observer =>
{
double padding = 0.001;
BoundingBox query = tile.BoundingBox;
var queryString = String.Format(_mapDataServerQuery,
query.MinPoint.Latitude - padding, query.MinPoint.Longitude - padding,
query.MaxPoint.Latitude + padding, query.MaxPoint.Longitude + padding);
var uri = String.Format("{0}{1}", _mapDataServerUri, Uri.EscapeDataString(queryString));
Trace.Warn(TraceCategory, Strings.NoPresistentElementSourceFound, query.ToString(), uri);
ObservableWWW.GetAndGetBytes(uri)
.ObserveOn(Scheduler.ThreadPool)
.Subscribe(bytes =>
{
Trace.Debug(TraceCategory, "saving bytes: {0}", bytes.Length.ToString());
lock (_lockObj)
{
if (!_fileSystemService.Exists(filePath))
using (var stream = _fileSystemService.WriteStream(filePath))
stream.Write(bytes, 0, bytes.Length);
}
// try to add in memory store
var errorMsg = SaveTileDataInMemory(tile, filePath);
if (errorMsg != null)
observer.OnError(new MapDataException(String.Format(Strings.CannotAddDataToInMemoryStore, errorMsg)));
else
{
observer.OnNext(tile);
observer.OnCompleted();
}
});
return Disposable.Empty;
});
}
/// <inheritdoc />
public IObservable<Union<Element, Mesh>> Load(Tile tile)
{
return CreateDownloadSequence(tile)
//CreateElevationSequence(tile)
//.SelectMany(t => _imaginaryProvider.Get(t).Select(_ => t))
//.SelectMany(t => CreateDownloadSequence(t))
.SelectMany(t => CreateLoadSequence(t));
}
public MapTileAdapter(Tile tile, IObserver<Union<Element, Mesh>> observer, ITrace trace)
{
_tile = tile;
_observer = observer;
_trace = trace;
}
public void SetUp()
{
var tile = new Tile(new QuadKey(), new Mock<Stylesheet>("").Object, new Mock<IProjection>().Object);
_observer = new Mock<IObserver<Union<Element, Mesh>>>();
_adapter = new MapTileAdapter(tile, _observer.Object, new DefaultTrace());
}
private bool ShouldPreload(Tile tile, Vector2 position)
{
return !tile.Contains(position, tile.Rectangle.Width * _offsetRatio);
}
/// <summary> Returns cache file name for given tile. </summary>
private string GetCacheFilePath(Tile tile)
{
var cacheFileName = tile.QuadKey + _mapDataFormatExtension;
return Path.Combine(_cachePath, cacheFileName);
}
/// <summary> Gets next quadkey. </summary>
private QuadKey GetNextQuadKey(Tile tile, Vector2 position)
{
var quadKey = tile.QuadKey;
// NOTE left-right and top-bottom orientation
Vector2 topLeft = new Vector2(tile.Rectangle.Left, tile.Rectangle.Top);
Vector2 topRight = new Vector2(tile.Rectangle.Right, tile.Rectangle.Top);
// top
if (IsPointInTriangle(position, tile.Rectangle.Center, topLeft, topRight))
return new QuadKey(quadKey.TileX, quadKey.TileY - 1, quadKey.LevelOfDetail);
Vector2 bottomLeft = new Vector2(tile.Rectangle.Left, tile.Rectangle.Bottom);
// left
if (IsPointInTriangle(position, tile.Rectangle.Center, topLeft, bottomLeft))
return new QuadKey(quadKey.TileX - 1, quadKey.TileY, quadKey.LevelOfDetail);
Vector2 bottomRight = new Vector2(tile.Rectangle.Right, tile.Rectangle.Bottom);
// right
if (IsPointInTriangle(position, tile.Rectangle.Center, topRight, bottomRight))
return new QuadKey(quadKey.TileX + 1, quadKey.TileY, quadKey.LevelOfDetail);
// bottom
return new QuadKey(quadKey.TileX, quadKey.TileY + 1, quadKey.LevelOfDetail);
}
/// <inheritdoc />
public void BuildMesh(Tile tile, Mesh mesh)
{
}
/// <inheritdoc />
public void BuildElement(Tile tile, Element element)
{
}
/// <summary> Downloads elevation data for given tile. </summary>
private IObservable<Tile> CreateElevationSequence(Tile tile)
{
return _elevationProvider.HasElevation(tile.BoundingBox)
? Observable.Return(tile)
: _elevationProvider.Download(tile.BoundingBox).Select(_ => tile);
}
/// <summary> Loads tile for given quadKey. </summary>
private void Load(QuadKey quadKey)
{
Tile tile = new Tile(quadKey, Stylesheet, Projection);
_loadedTiles.Add(quadKey, tile); // TODO remove tile from hashmap if exception is raised
_messageBus.Send(new TileLoadStartMessage(tile));
_tileLoader
.Load(tile)
.SubscribeOn(Scheduler.ThreadPool)
.ObserveOn(Scheduler.MainThread)
.Subscribe(
u => u.Match(e => _modelBuilder.BuildElement(tile, e), m => _modelBuilder.BuildMesh(tile, m)),
() => _messageBus.Send(new TileLoadFinishMessage(tile)));
}
/// <summary> Creates <see cref="IObservable{T}"/> for loading element of given tile. </summary>
private IObservable<Union<Element, Mesh>> CreateLoadSequence(Tile tile)
{
return Observable.Create<Union<Element, Mesh>>(observer =>
{
Trace.Info(TraceCategory, "loading tile: {0}", tile.ToString());
var adapter = new MapTileAdapter(tile, observer, Trace);
CoreLibrary.LoadQuadKey(
_pathResolver.Resolve(tile.Stylesheet.Path),
tile.QuadKey,
adapter.AdaptMesh,
adapter.AdaptElement,
adapter.AdaptError);
Trace.Info(TraceCategory, "tile loaded: {0}", tile.ToString());
observer.OnCompleted();
return Disposable.Empty;
});
}
private void PreloadNextTile(Tile tile, Vector2 position)
{
var quadKey = GetNextQuadKey(tile, position);
if (!_loadedTiles.ContainsKey(quadKey))
Load(quadKey);
}
/// <summary> Adds tile data into in memory storage. </summary>
private string SaveTileDataInMemory(Tile tile, string filePath)
{
Trace.Info(TraceCategory, "try to save: {0} from {1}", tile.ToString(), filePath);
string errorMsg = null;
CoreLibrary.AddToStore(MapStorageType.InMemory,
_pathResolver.Resolve(tile.Stylesheet.Path),
_pathResolver.Resolve(filePath),
tile.QuadKey,
error => errorMsg = error);
return errorMsg;
}
/// <inheritdoc />
public void BuildElement(Tile tile, Element element)
{
if (element.Styles["builders"].Contains("info"))
_placeElementBuilder.Build(tile, element).transform.parent = tile.GameObject.transform;
}
