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Performance improvement

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This commit is contained in:
Pieter Vander Vennet 2021-01-05 10:56:25 +01:00
parent 6557c51493
commit ce30b159f9
1 changed files with 11 additions and 1 deletions
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12
Logic/FeatureSource/FilteringFeatureSource.ts
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@ -44,7 +44,17 @@ export default class FilteringFeatureSource implements FeatureSource {
}
upstream.features.addCallback(() => {
update()});
location.map(l => l.zoom).addCallback(() => {
location.map(l => {
// We want something that is stable for the shown layers
const displayedLayerIndexes = [];
for (let i = 0; i < layers.length; i++) {
if(l.zoom <= layers[i].layerDef.minzoom){
displayedLayerIndexes.push(i);
}
}
return displayedLayerIndexes.join(",")
})
.addCallback(() => {
update();});