Commits on Nov 28, 2023

1. (WIP) Add Bubbles layer type …

   fix #1399
   
   This is a very first look. But it's not as simple as I thought,
   because:
   - as for a heatmap, we need a special representation (each feature
     should be a circle, not a normal icon nor a polygon)
   - as for a choropleth, we want to dynamically take control over the
     rendering (we need all the features to be able to compute the bubbles
     sizes)
   - as for a normal layer, we want all the features to react to interaction,
     specifically click to open a popup, but also tooltip, highlight (?), etc.
   
   In this first implementation, I've created a new type of layer, that creates
   a CircleMarker for each feature, but doing so we lose all the interactions.
   I've tried to set a sort of proxy so that a click on the circle will fire
   a click on the feature, but as this feature is actually not on the map, this
   does not work naturally.
   Also, at this point, the styling is only done once, so editing layer's style
   will not be updated live in the map.
   
   A few more thinking is needed, mainly to decide how to handle the circle: should
   it be a "proxy layer" as now, or should we try to transform a feature on the fly
   (make sure it is a marker of type circle, but as for now our circle are html, not
   svg…), and in this case, should we magically handle polygons and polylines (taking
   their center), or only markers (which could be easier, and possibly enough) ?

   

   yohanboniface committed Nov 28, 2023
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