Welcome to ol-mapbox-style Discussions!

[ahocevar]

👋 Welcome!

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• Ask questions you’re wondering about.
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To get started, comment below with an introduction of yourself and tell us about what you do with this community.

[orangemug]

I'm @orangemug, hello everyone 👋

I'm building a small open source mapping app for styling and manipulation of geo-data called Maparatus. The styling is much like Maputnik an uses the mapbox style specification as the basis for what possible. Unlike Maputnik which had openlayers as a "well it kind of works", my aim is to have openlayers as a fully operational renderer. It has a few bugs but basically works, and supports projections.

OpenLayers with ol-mapbox-style is a great library and I think for a bunch of mapping applications is a great fit. My aims for Maparatus are non-google-maps-esque maps, so not maps with "world level" to "street level" views, but maps with a lot more limits zoom limits. Those like you'd find on news websites for example. A little screenshot in case anybody is interested. It's a super-simple style in EPSG:3031 projection.

Things I'd like to discuss (and maybe contribute)

• A style specification in keeping with maplibre-gl that only exposes what's possible with ol-mapbox-style (also possibly extensions to the spec?)
• Projection specific issues if they lie in openlayers or ol-mapbox-style
• Feedback on a few "plugins" I've made for Maparatus that make them work together a little easier (making maplibre load fonts like ol-mapbox-style for example)
• Any performance tips and tricks to make things run a bit smoother

Thanks everyone for all the hard work on the library, especially @ahocevar

[ahocevar]

Thanks for introducing yourself, @orangemug! What you're working on sounds great.

A style specification in keeping with maplibre-gl that only exposes what's possible with ol-mapbox-style (also possibly extensions to the spec?)

I'm envisioning a standalone style spec package independent from Mapbox and MapLibre, where we can optimize things for build size on the one hand and auto-generated spec documentation with profiles and extensions on the other hand.

Projection specific issues if they lie in openlayers or ol-mapbox-style

Instead of going down a path like WMTS or OGC API Tiles did, I'd llike to keep things as simple as the original TileJSON spec. This is what's already implemented in ol-mapbox-style. It means: validity extent of the used projection determines the tile grid, Web Mercator zoom levels determine the zoom levels for the styles.

[orangemug]

Thanks I've moved style-spec discussion into #10 (comment)

With regards to "projection specific issues", they're mostly working great thus far, here it is with a GeoJSON source from https://geojson.xyz/. Its come a long way since I last tried to implement this, congrats.

screen-20231211-171642.4.mp4

I've been using EPSG:3031 for testing (which is probably one of the more awkward projections) I'm finding issues like with line widths, in the below screenshots, I'm increasing the line-width from 0.5 to 0.6 it gets interesting (artistic)