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outsourced tile sorting from tile comparing.

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Peter 2023-07-28 13:15:47 +02:00
parent ccb4ae9f86
commit 17873001b8
1 changed files with 24 additions and 13 deletions
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37
src/tiledimage.js
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@ -1931,24 +1931,35 @@ $.extend($.TiledImage.prototype, $.EventSource.prototype, /** @lends OpenSeadrag
}
previousBest.push(tile);
if (previousBest.length > maxNTiles) {
previousBest.sort(function (a, b) {
if (a === null) {
return 1;
}
if (b === null) {
return -1;
}
if (a.visibility === b.visibility) {
return (a.squaredDistance - b.squaredDistance);
} else {
return (a.visibility - b.visibility);
}
});
this._sortTiles(previousBest);
previousBest.pop();
}
return previousBest;
},
/**
* @private
* @inner
* Sorts tiles in an array according to distance and visibility.
*
* @param {OpenSeadragon.Tile[]} tiles The tiles.
*/
_sortTiles: function( tiles ) {
tiles.sort(function (a, b) {
if (a === null) {
return 1;
}
if (b === null) {
return -1;
}
if (a.visibility === b.visibility) {
return (a.squaredDistance - b.squaredDistance);
} else {
return (a.visibility - b.visibility);
}
});
},
/**
* @private
* @inner