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Experimenting with using the overpass API directly

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This commit is contained in:
Pieter Vander Vennet 2021-05-06 03:03:54 +02:00
parent a0c1bc2137
commit 1476ab0407
6 changed files with 251 additions and 89 deletions
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23
Utils.ts
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@ -189,7 +189,7 @@ export class Utils {
* @param z
* @param x
* @param y
* @returns [[lat, lon], [lat, lon]]
* @returns [[maxlat, minlon], [minlat, maxlon]]
*/
static tile_bounds(z: number, x: number, y: number): [[number, number], [number, number]] {
return [[Utils.tile2lat(y, z), Utils.tile2long(x, z)], [Utils.tile2lat(y + 1, z), Utils.tile2long(x + 1, z)]]
@ -201,8 +201,8 @@ export class Utils {
static embedded_tile(lat: number, lon: number, z: number): { x: number, y: number, z: number } {
return {x: Utils.lon2tile(lon, z), y: Utils.lat2tile(lat, z), z: z}
}
static TileRangeBetween(zoomlevel: number, lat0: number, lon0: number, lat1:number, lon1: number) : TileRange{
static TileRangeBetween(zoomlevel: number, lat0: number, lon0: number, lat1: number, lon1: number): TileRange {
const t0 = Utils.embedded_tile(lat0, lon0, zoomlevel)
const t1 = Utils.embedded_tile(lat1, lon1, zoomlevel)
@ -211,12 +211,12 @@ export class Utils {
const ystart = Math.min(t0.y, t1.y)
const yend = Math.max(t0.y, t1.y)
const total = (1 + xend - xstart) * (1 + yend - ystart)
return {
xstart: xstart,
xend: xend,
ystart: ystart,
yend: yend,
yend: yend,
total: total,
zoomlevel: zoomlevel
}
@ -274,8 +274,18 @@ export class Utils {
private static lat2tile(lat, zoom) {
return (Math.floor((1 - Math.log(Math.tan(lat * Math.PI / 180) + 1 / Math.cos(lat * Math.PI / 180)) / Math.PI) / 2 * Math.pow(2, zoom)));
}
}
public static MapRange<T> (tileRange: TileRange, f: (x: number, y: number) => T): T[] {
const result : T[] = []
for (let x = tileRange.xstart; x <= tileRange.xend; x++) {
for (let y = tileRange.ystart; y <= tileRange.yend; y++) {
const t= f(x, y);
result.push(t)
}
}
return result;
}
}
export interface TileRange{
xstart: number,
@ -284,4 +294,5 @@ export interface TileRange{
yend: number,
total: number,
zoomlevel: number
}