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This commit is contained in:
Miko 2025-01-08 00:38:08 +01:00
parent 13c024f6f8
commit 3cc3da6195
1 changed files with 9 additions and 12 deletions
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21
src/serve_data.js
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@ -230,12 +230,7 @@ export const serve_data = {
xy = [intX, intY]; xy = [intX, intY];
bbox = new SphericalMercator().bbox(intX, intY, zoom); bbox = new SphericalMercator().bbox(intX, intY, zoom);
} else { } else {
if ( if (x < -180 || y < -90 || x > 180 || y > 90) {
x < -180 ||
y < -90 ||
x > 180 ||
y > 90
) {
return res.status(404).send('Out of bounds'); return res.status(404).send('Out of bounds');
} }
@ -290,12 +285,14 @@ export const serve_data = {
siny = Math.min(Math.max(siny, -0.9999), 0.9999); siny = Math.min(Math.max(siny, -0.9999), 0.9999);
const xWorld = TILE_SIZE * (0.5 + long / 360); const xWorld = TILE_SIZE * (0.5 + long / 360);
const yWorld = TILE_SIZE * (0.5 - Math.log((1 + siny) / (1 - siny)) / (4 * Math.PI)); const yWorld =
TILE_SIZE *
(0.5 - Math.log((1 + siny) / (1 - siny)) / (4 * Math.PI));
const scale = 1 << zoom; const scale = 1 << zoom;
const xTile = Math.floor(xWorld * scale / TILE_SIZE); const xTile = Math.floor((xWorld * scale) / TILE_SIZE);
const yTile = Math.floor(yWorld * scale / TILE_SIZE); const yTile = Math.floor((yWorld * scale) / TILE_SIZE);
const xPixel = Math.floor(xWorld * scale) - xTile * TILE_SIZE; const xPixel = Math.floor(xWorld * scale) - xTile * TILE_SIZE;
const yPixel = Math.floor(yWorld * scale) - yTile * TILE_SIZE; const yPixel = Math.floor(yWorld * scale) - yTile * TILE_SIZE;
@ -317,9 +314,9 @@ export const serve_data = {
let elevation; let elevation;
if (encoding === 'mapbox') { if (encoding === 'mapbox') {
elevation = elevation =
-10000 + ((red * 256 * 256 + green * 256 + blue) * 0.1); -10000 + (red * 256 * 256 + green * 256 + blue) * 0.1;
} else if (encoding === 'terrarium') { } else if (encoding === 'terrarium') {
elevation = (red * 256 + green + blue / 256) - 32768 elevation = red * 256 + green + blue / 256 - 32768;
} else { } else {
elevation = 'invalid encoding'; elevation = 'invalid encoding';
} }
@ -334,7 +331,7 @@ export const serve_data = {
blue, blue,
latitude: lat, latitude: lat,
longitude: long, longitude: long,
elevation elevation,
}), }),
); );
}; };