ezu-core 0.9.0

Core types for ezu: tile/world coordinates, deterministic seeding
Documentation

ezu-core

Core types shared across the ezu workspace.

Contents

Module What it provides
coord [TileId] (z/x/y) and [WorldPos] in the [0,1]² Web-Mercator unit square; tile_to_world()
seed world_seed(WorldPos, salt) -> u64 (xxh3) — the foundation of seamless tile boundaries

World coordinates here are normalized to the unit square so that zoom-aware jitter and seed derivation stay zoom-stable: the same physical location always produces the same seed regardless of which zoom level a particular tile happens to live at.

Example

use ezu_core::{seed::world_seed, TileId, WorldPos};

let tile = TileId::new(13, 7276, 3225);
let pos = ezu_core::coord::tile_to_world(tile, 2048.0, 2048.0, 4096.0);
let seed = world_seed(pos, 0xE2_70_DA_B5);

See the main README for the full project overview.

License

MIT or Apache-2.0, at your option.