[Feature Request] Provide ability to load vector tiles from a local function

[douglasg14b]

Motivation

I've seen this mentioned a few times, but have not seen an actual request or feature for it. So here it is!

• Client-side generated tiles
• Client-side generated grids
• Anything where the vector tile generation can be offloaded to the client on a tile-by-tile basis
• Alternative caching mechanism or logic that needs to be maintained outside of Mapbox
• Providing an alternative to the delay/lag of loading large datasets that may be much larger than the current viewport, instead it could be generated & rendered tile-by-tile client-side
  • Similarly, a changing dataset could be more performant if more use-case specific tile-generating & caching strategies could be employed, and the vector tiles results just fed to mapbox

Similar Issues:

• Generating raster tile instead of fetching from url #9897

Design Alternatives

Unknown

Design

Prove the ability to pass a function as a vector tile source for a layer. Instead of just a URL.

For instance a function getTile(x,y,z) could return the appropriate map tiles for mapbox to use for some layer.

Mock-Up

Unknown

Concepts

Unknown

Implementation

Unknown

[douglasg14b]

The mockup, concepts, & implementation are out of my knowledge-space for Mapbox. Maybe a maintainer could speak to those?

[douglasg14b]

Possibly related to #10008 ?

[fr-an-k]

I could really use this too; ideally just provide the blob rather than having to pass it as a data/object url.

Ideally it would be possible to use something like the buckets directly and leave out the HTTP, HTML, GeoJSON, vector tile/PBF stuff; it serves no purpose when editing client-side in a data driven web app.