wip: add option to compute cluster by property #2855
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Overriding MarkerCluster is fragile, and we've made quite a lot of monkeypatches. Plus we want to prepare the possibility to cluster semantically, not only geographicaly. And when we'll have layer groups, to cluster a whole group (so combining amounts and colors). This clustering algorithm is very very naive, but uMap is not meant to be used with millions of points, so it may be enough for our usages. Let's see and improve later if needed. Still needed: - playwright tests - spiderify function when reaching max zoom and some markers are still on the same cluster (eg. same exact position) - allow to cluster on a property (eg. a region name) - allow to define a max zoom for clustering (eg. when zooming over the "region zoom", let's uncluster) - allow to display a custom aggregation instead of length in the cluster marker (eg. display the total amount of money spent) fix #326 cf #115 cf #508 cf #2675
yohanboniface
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