Crate ezu_features 

GIS feature parsing for ezu.

Parses tile / feature formats into a flat, owned representation that downstream paint code can iterate over without implementing format-specific traits. Remote fetching is intentionally not in scope — input is always raw bytes / strings from the caller.

Submodules:

• mvt — Mapbox Vector Tile protobuf decode
• geojson — GeoJSON FeatureCollection parse

All decoders produce the same shared Feature / Geometry / Polygon / Value types defined at the crate root.

Modules

geojson

GeoJSON parsing.

mvt

MVT (Mapbox Vector Tile) decoding.

ops

Pure-function geometry operations on the crate’s owned types (Polygon, LineString as Vec<(i32, i32)>, Point as (i32, i32)).

Structs

Feature

One decoded feature: geometry plus a properties bag.

FeatureLayer

A single tile-local layer of decoded features. The producer (MVT decoder, GeoJSON loader, host glue, …) normalizes coordinates into [0, extent] with y-down before constructing this. Consumers in ezu-paint read it via the unified AssetLoader under tile.<name> bindings.

Geometry

Geometry in source-specific tile-local coordinates. For MVT this is [0, extent] with y-down; for GeoJSON it’s whatever the caller chose to project into before parsing.

Polygon

A polygon with one exterior ring and zero or more interior holes.

Enums

Value

Untyped property value carried alongside a feature.