@vcmap/core
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    Class StaticFeatureTileProvider

    baseclass for all Objects

    Hierarchy (View Summary)

    Index

    Accessors

    • get className(): string

      Returns string

    Constructors

    Methods

    • returns the features intersecting this coordinate. Depending on the resolution a buffer around the coordinate is requested. The Buffer has the size of the resolution.

      Parameters

      • coordinate: Coordinate

        in mercator

      • resolution: number

        in m per pixel

      • Optionalheaders: Record<string, string>

        optional request headers to be sent with the server request

      Returns Promise<Feature<Geometry, { [x: string]: any }>[]>

    • Retrieves all features which intersect the given extent. Will load all intersecting tiles.

      Parameters

      • extent: Extent
      • Optionallevel: number

        Optional level to request. Will use highest level if omitted. If the provided level is not a base level, will use the closest match.

      • Optionalheaders: Record<string, string>

        Optional request headers to be sent with the server request

      Returns Promise<Feature<Geometry, { [x: string]: any }>[]>

    • returns features for the requested Tile.

      Parameters

      • x: number
      • y: number
      • level: number

        if the level is not a base level, will use the closest match

      • Optionalheaders: Record<string, string>

        optional request headers to be sent with the server request

      Returns Promise<Feature<Geometry, { [x: string]: any }>[]>

    • Public API to load features from a source (for example a rest API, or WfsLayer)

      Can be used to write custom TileProvider to provide an interface to a "feature Source" Can also be used to manipulate the features, for example setting an ID Prefix or filter the features.

      Parameters

      • _x: number
      • _y: number
      • _z: number
      • Optional_headers: Record<string, string>

      Returns Promise<Feature<Geometry, { [x: string]: any }>[]>

      to request Geojson from a rest API:
      const rectangle = this.tilingScheme.tileXYToRectangle(x, y, z);
      const southwest = Rectangle.southwest(rectangle);
      const northeast = Rectangle.northeast(rectangle);
      const minx = CesiumMath.toDegrees(southwest.longitude);
      const miny = CesiumMath.toDegrees(southwest.latitude);
      const maxx = CesiumMath.toDegrees(northeast.longitude);
      const maxy = CesiumMath.toDegrees(northeast.latitude);
      const url = `http://myFeatureSource/layer/getFeatures?minx=${minx}&miny=${miny}&maxx=${maxx}&maxy=${maxy}`

      return fetch.get(url)
      .then(response => response.json())
      .then((data) => {
      const { features } = parseGeoJSON(data.data, { dynamicStyle: true });
      return features;
      });

    Properties

    "[moduleIdSymbol]"?: string
    allowTileAggregation: boolean
    baseLevels: number[]

    sorted baseLevels, maximumLevel first example: [18,17,16]

    cache: Map<number, LRUCache<Promise<TileProviderRtree>>> = ...

    cache of tiles for each baseLevel

    featureIdToTileIds: Map<string, Set<string>> = ...

    set of currently loaded featureIds with the corresponding tileIds

    isDestroyed: boolean
    name: string

    unique Name

    properties: Record<string, unknown>
    rtreeCache: Map<string, TileProviderRtree> = ...

    Caches the loaded rTrees for quick Access to all features.

    tileLoadedEvent: VcsEvent<TileLoadedEvent> = ...
    tilingScheme: WebMercatorTilingScheme = ...

    Cesium Webmercator TilingScheme

    trackFeaturesToTiles: boolean