_resizeCache()

in modules/geo-layers/src/tile-layer/tileset-2d.js [260:291]

• 26 lines of code
• 12 McCabe index (conditional complexity)

  _resizeCache() {
    const {_cache, opts} = this;

    const maxCacheSize =
      opts.maxCacheSize ||
      (opts.maxCacheByteSize ? Infinity : DEFAULT_CACHE_SCALE * this.selectedTiles.length);
    const maxCacheByteSize = opts.maxCacheByteSize || Infinity;

    const overflown = _cache.size > maxCacheSize || this._cacheByteSize > maxCacheByteSize;

    if (overflown) {
      for (const [tileId, tile] of _cache) {
        if (!tile.isVisible) {
          // delete tile
          this._cacheByteSize -= opts.maxCacheByteSize ? tile.byteLength : 0;
          _cache.delete(tileId);
        }
        if (_cache.size <= maxCacheSize && this._cacheByteSize <= maxCacheByteSize) {
          break;
        }
      }
      this._rebuildTree();
      this._dirty = true;
    }
    if (this._dirty) {
      this._tiles = Array.from(this._cache.values())
        // sort by zoom level so that smaller tiles are displayed on top
        .sort((t1, t2) => t1.z - t2.z);

      this._dirty = false;
    }
  }