[Bug] Picking radius does not apply correctly in _pickClosestObject

[deluksic]

Description

If I understand the picking mechanism correctly, the _pickClosestObject will render a square patch (pickingRadius x pickingRadius) of the picking buffer and find the non-null pixel closest to the center of the patch.

In case we have overlapping objects, the object in front will not get "expanded" as pickingRadius would suggest, rather the closest object will be picked regardless of which one is in front.

This means the behavior is just as if we had pickingRadius = 0.

Is there a simple way to fix this? The use case is very common, I believe: ScatterplotLayer on top of a TileLayer.

Flavors

• Script tag
• React
• Python/Jupyter notebook
• MapboxOverlay
• GoogleMapsOverlay
• CartoLayer
• ArcGIS

Expected Behavior

No response

Steps to Reproduce

I will come up with an example if the problem is unclear.

Environment

• Framework version: v9.0.36
• Browser: Chrome
• OS: MacOS

Logs

No response