Module mapbox 

Mapbox “Terrain-RGB” elevation tile encoding.

Formula: elevation = -10000 + (R * 65536 + G * 256 + B) * 0.1 (metres).

Reference: https://docs.mapbox.com/data/tilesets/reference/mapbox-terrain-rgb-v1/

Functions

decode

Decode RGB bytes into a freshly allocated Vec<f32>.

decode_into

Decode RGB bytes into a caller-owned f32 buffer (no allocation).

decode_pixel

Decode a single Mapbox Terrain-RGB (R, G, B) pixel into elevation (metres).

encode

Encode elevations into a freshly allocated Vec<u8>.

encode_into

Encode elevations into a caller-owned RGB buffer (no allocation).

encode_pixel

Encode a single elevation sample (metres) into Mapbox (R, G, B).

encode_to

Stream-encode elevations to a writer.