Function lngLatToWorld

docs/app/js/sanddance-app.js:80288–80300

(lngLat)

    return (0, _mathUtils.log2)(scale);
}
function lngLatToWorld(lngLat) {
    const [lng, lat] = lngLat;
    (0, _assertDefault.default)(Number.isFinite(lng));
    (0, _assertDefault.default)(Number.isFinite(lat) && lat >= -90 && lat <= 90, "invalid latitude");
    const lambda2 = lng * DEGREES_TO_RADIANS;
    const phi2 = lat * DEGREES_TO_RADIANS;
    const x = TILE_SIZE * (lambda2 + PI) / (2 * PI);
    const y = TILE_SIZE * (PI + Math.log(Math.tan(PI_4 + phi2 * 0.5))) / (2 * PI);
    return [
        x,
        y
    ];
}
function worldToLngLat(xy) {
    const [x, y] = xy;
    const lambda2 = x / TILE_SIZE * (2 * PI) - PI;