app

app/org.scottishtecharmy.soundscape.geoengine/GridState

GridState

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

Inheritors

ProtomapsGridState

Constructors

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

Types

data class CachedTile(var tileCollections: Array<FeatureCollection>, var intersectionMap: HashMap<LngLatAlt, Intersection> = hashMapOf(), var lastUsed: Long)

object Companion

Properties

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

val gridSize: Int

val maxCachedTiles: Int = 10

val treeContext: ExecutorCoroutineDispatcher

validateContext

var validateContext: Boolean

val zoomLevel: Int

Functions

clearCachedTile

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

fun clearTile(tile: GridState.CachedTile)

fun clearTileCache()

clearTileConnectionsFromGrid

fun clearTileConnectionsFromGrid()

clearTileConnectionsFromGrid removes all joining ways from the grid.

fixupCollections

open fun fixupCollections(featureCollections: Array<FeatureCollection>)

fun getFeatureTree(id: TreeId): FeatureTree

isLocationWithinGrid

fun isLocationWithinGrid(location: LngLatAlt): Boolean

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

open fun start(applicationContext: Context)

fun stop()