MapBox water/land detection

Question

I am starting to use the MapBox iOS SDK.

Is there any possible way to query the MapView by a coordinate and get back the terrain-type (water, land) as a result?

I've been reading the API doc for quite a while now, but could not figure it out. I know that there are (interim) solutions available to use a Google webservice, but I need this to work offline.

I am not bound to MapBox (but I like it) though, thank you for any hint!

Answer 1

No need to delve into runtime styling (see my other answer, false lead): very simple method using mapView.visibleFeatures(at: CGPoint, styleLayerIdentifiers: Set<String>) equivalent for javascript API is queryRenderedFeatures.

func mapView(_ mapView: MGLMapView, regionDidChangeAnimated animated: Bool)
{
    let features = mapView.visibleFeatures(at: mapView.center, styleLayerIdentifiers: ["water"])
    print(features)
}

Example output when moving around:

[]
[]
[]
[<MGLMultiPolygonFeature: 0x170284650>]

If empty result: no water, if polygon: water.