ccfacc5ee6
Using the [ts.js codemod](https://gist.github.com/tschaub/1ea498c9d1e5268cf36d212b3949be4e): jscodeshift --transform ts.js src
54 lines
1.1 KiB
JavaScript
54 lines
1.1 KiB
JavaScript
/**
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* @module ol/TileCache
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*/
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import LRUCache from './structs/LRUCache.js';
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import {fromKey, getKey} from './tilecoord.js';
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class TileCache extends LRUCache {
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/**
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* @param {number=} opt_highWaterMark High water mark.
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*/
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constructor(opt_highWaterMark) {
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super(opt_highWaterMark);
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}
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/**
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* @param {!Object<string, import("./TileRange.js").default>} usedTiles Used tiles.
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*/
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expireCache(usedTiles) {
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while (this.canExpireCache()) {
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const tile = this.peekLast();
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const zKey = tile.tileCoord[0].toString();
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if (zKey in usedTiles && usedTiles[zKey].contains(tile.tileCoord)) {
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break;
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} else {
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this.pop().dispose();
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}
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}
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}
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/**
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* Prune all tiles from the cache that don't have the same z as the newest tile.
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*/
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pruneExceptNewestZ() {
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if (this.getCount() === 0) {
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return;
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}
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const key = this.peekFirstKey();
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const tileCoord = fromKey(key);
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const z = tileCoord[0];
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this.forEach(function(tile) {
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if (tile.tileCoord[0] !== z) {
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this.remove(getKey(tile.tileCoord));
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tile.dispose();
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}
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}, this);
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}
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}
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export default TileCache;
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