zxyToBbox

import { zxyToBbox } from '@accelint/converters/zxy-to-bbox';

const bbox = zxyToBbox([8, 71, 96]);
// [west, south, east, north]

function zxyToBbox(tile: ZxyTuple): BoundingBoxTuple

type ZxyTuple = [z: number, x: number, y: number]
type BoundingBoxTuple = [
  west: number,   // left longitude
  south: number,  // bottom latitude
  east: number,   // right longitude
  north: number   // top latitude
]

import { zxyToBbox } from '@accelint/converters/zxy-to-bbox';

// Zoom level 8, tile (71, 96)
const bbox = zxyToBbox([8, 71, 96]);
console.log(bbox);
// [west, south, east, north] in decimal degrees

import { zxyToBbox } from '@accelint/converters/zxy-to-bbox';

// Get bounds for a tile at zoom 12
const zoom = 12;
const tileX = 1234;
const tileY = 5678;

const [west, south, east, north] = zxyToBbox([zoom, tileX, tileY]);

console.log(`Tile bounds:`);
console.log(`  West: ${west}°`);
console.log(`  South: ${south}°`);
console.log(`  East: ${east}°`);
console.log(`  North: ${north}°`);

import { zxyToBbox } from '@accelint/converters/zxy-to-bbox';

interface TileViewport {
  zoom: number;
  tileX: number;
  tileY: number;
  bounds: {
    west: number;
    south: number;
    east: number;
    north: number;
  };
}

function getTileViewport(
  zoom: number,
  tileX: number,
  tileY: number
): TileViewport {
  const [west, south, east, north] = zxyToBbox([zoom, tileX, tileY]);
  
  return {
    zoom,
    tileX,
    tileY,
    bounds: { west, south, east, north }
  };
}

const viewport = getTileViewport(10, 512, 768);
console.log(viewport);

import { zxyToBbox } from '@accelint/converters/zxy-to-bbox';

// Get bounds for multiple tiles
const tiles = [
  [8, 71, 96],
  [8, 72, 96],
  [8, 71, 97],
  [8, 72, 97]
] as const;

const bounds = tiles.map(tile => ({
  tile,
  bbox: zxyToBbox(tile)
}));

console.log(bounds);

import { zxyToBbox } from '@accelint/converters/zxy-to-bbox';

function isPointInTile(
  lon: number,
  lat: number,
  tile: readonly [number, number, number]
): boolean {
  const [west, south, east, north] = zxyToBbox(tile);
  
  return lon >= west && lon <= east && lat >= south && lat <= north;
}

const tile = [10, 512, 768] as const;
console.log(isPointInTile(-122.4194, 37.7749, tile));
// true if San Francisco is in this tile