private _updateTiles()

in packages/utils/tile-manager/src/CommonTileManager.ts [252:329]
54 lines of code
13 McCabe index (conditional complexity)

	private _updateTiles() {
		if (!this._timeline || !this._projection || !this._polaris) return

		this._currZoomLevel = this._polaris.cameraProxy.zoom

		const tokenList = this.config.getViewTiles(
			this._polaris,
			this.config.minZoom,
			this.config.maxZoom
		)
		this._currVisibleKeys.length = 0

		tokenList.forEach((token) => {
			const cacheKey = this.tileTokenToKey(token)
			this._currVisibleKeys.push(cacheKey)

			// check visibility if mesh already exists
			if (this._tileMap.has(cacheKey)) {
				return
			}

			// skip if already in query queue
			if (this._promiseMap.has(cacheKey)) {
				return
			}

			// query new tile
			const tilePromise = this.config.getTileRenderables(token, this)
			if (!tilePromise || !tilePromise.promise) {
				if (this.config.printErrors) {
					console.error('Polaris::TileManager - getTileRenderables() result is invalid. ')
				}
				return
			}

			// cache
			const cachedPromise: CachedTilePromise = {
				...tilePromise,
				key: cacheKey,
				outOfViewFrames: 0,
			}
			this._promiseMap.set(cacheKey, cachedPromise)

			// handle renderables
			const promise = cachedPromise.promise
			promise
				.then((tile) => {
					this._addTile(cacheKey, tile)
				})
				.catch((err) => {
					if (this._tileMap.has(cacheKey)) {
						return
					}

					if (!this._promiseMap.has(cacheKey)) {
						// promise was either aborted by us or never requested (which is abnormal)
						// @NOTE: We do not identify the 'AbortError string from this error obj,
						// as in many apps the errors are intercepted in the way of rejection.
						// So, we should never assume the error.name/.message to be some specific string.
						// We should only identify it from the user's abort() function return value.
						// When abort() returns { success: true }, the promiseCache will be removed from map
						return
					}

					if (this.config.printErrors) {
						console.error('Polaris::TileManager - getTileRenderables error', err)
					}

					if (this.config.RetryErroredRequests) {
						// delete errored requests, retry next time
						this._promiseMap.delete(cacheKey)
					} else {
						// add empty tile renderables if server response is errorlike
						this._addTile(cacheKey, undefined)
					}
				})
		})
	}