Conditionally pause raster tile requests

[plymer]

Hi all, I have a use case where I am displaying many layers of raster data in order to facilitate a good visual looping experience (making a geostationary weather satellite & radar viewer), however due to the large amount of tile requests when the user moves the map, I would like to be able to conditionally pause tile requests for all but the currently relevant layer and then resume them once the map movement is completed.

I have taken a shallow look into the library code and seen some somewhat promising indications that it might be possible, but I really am not sure where to even begin hooking into those areas of the code.

I don't want to remove the sources or set them to null - the volume of data required for this use case is such that even populating from the browser cache is a noticeable degradation of the UX. I would ideally like to just retain the tiles I have currently for the 'paused' layers, and then request new tiles once the viewport updates have completed.

I think that the "cancel tile requests on zoom" functionality is essentially what I am looking to re-create, but for panning instead.

Has anyone managed this? I recognize this is essentially an antipattern to how most people want their maps to behave.

[HarelM]

I'm not sure if it's possible or not, but maybe you could try and use addProtocol to define the logic in which you return a tile and checking if the map is moving or not, adding some busy-wait kind if logic. IDK...

[plymer]

Thanks for the reply! I had considered going down the addProtocol rabbit hole, so your comment is motivation enough to dive in a bit more. Cheers!