app/org.scottishtecharmy.soundscape.geoengine/ProtomapsGridState

ProtomapsGridState

open class ProtomapsGridState(val zoomLevel: Int = MAX_ZOOM_LEVEL, val gridSize: Int = GRID_SIZE, passedInTreeContext: CloseableCoroutineDispatcher? = null) : GridState

Constructors

ProtomapsGridState

constructor(zoomLevel: Int = MAX_ZOOM_LEVEL, gridSize: Int = GRID_SIZE, passedInTreeContext: CloseableCoroutineDispatcher? = null)

Properties

cachedTiles

val cachedTiles: HashMap<Pair<Int, Int>, GridState.CachedTile>

gridSize

val gridSize: Int

maxCachedTiles

val maxCachedTiles: Int = 10

treeContext

val treeContext: ExecutorCoroutineDispatcher

validateContext

var validateContext: Boolean

zoomLevel

val zoomLevel: Int

Functions

clearCachedTile

fun clearCachedTile(key: Pair<Int, Int>)

clearTile

fun clearTile(tile: GridState.CachedTile)

clearTileCache

fun clearTileCache()

clearTileConnectionsFromGrid

fun clearTileConnectionsFromGrid()

clearTileConnectionsFromGrid removes all joining ways from the grid.

fixupCollections

open override fun fixupCollections(featureCollections: Array<FeatureCollection>)

getFeatureTree

fun getFeatureTree(id: TreeId): FeatureTree

isLocationWithinGrid

fun isLocationWithinGrid(location: LngLatAlt): Boolean

locationUpdate

suspend fun locationUpdate(location: LngLatAlt, enabledCategories: Set<String>): Boolean

The tile grid service is called each time the location changes. It checks if the location has moved away from the center of the current tile grid and if it has calculates a new grid.

processGridState

fun processGridState(featureCollections: Array<FeatureCollection>, enabledCategories: Set<String>, newGridIntersections: List<HashMap<LngLatAlt, Intersection>>, localTrees: Array<FeatureTree>, intersectionAccumulator: HashMap<LngLatAlt, Intersection>, grid: TileGrid)

processGridState is now called from within the single thread that can access the tile grid. This makes it somewhat performance critical. However, by doing this it allows us to disconnect and reconnect the tile grid

start

open override fun start(applicationContext: Context)

stop

fun stop()