71 lines
1.2 KiB
JavaScript
71 lines
1.2 KiB
JavaScript
"use strict";
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import { normalise, clamp } from './Math.mjs';
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function normalise_lat(lat) {
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return normalise(lat,
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{ min: -90, max: +90 },
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{ min: 0, max: 1 }
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);
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}
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function normalise_lng(lng) {
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return normalise(lng,
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{ min: -180, max: +180 },
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{ min: 0, max: 1 }
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);
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}
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function unnormalise_lat(nlat) {
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return normalise(nlat,
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{ min: 0, max: 1 },
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{ min: -90, max: +90 }
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);
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}
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function unnormalise_lng(nlng) {
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return normalise(nlng,
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{ min: 0, max: 1 },
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{ min: -180, max: +180 }
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);
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}
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function normalise_gateway_distance(distance) {
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return clamp(normalise(distance,
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{ min: 0, max: 75000 },
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{ min: 0, max: 1 }
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), 0, 1);
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}
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function unnormalise_gateway_distance(ndistance) {
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return normalise(ndistance,
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{ min: 0, max: 1 },
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{ min: 0, max: 20000 }
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);
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}
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function normalise_rssi(rssi) {
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return clamp(normalise(rssi,
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{ min: -150, max: 0 },
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{ min: 0, max: 1 }
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), 0, 1)
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}
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function unnormalise_rssi(rssi) {
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return normalise(rssi,
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{ min: 0, max: 1 },
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{ min: -150, max: 0 }
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);
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}
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export {
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normalise_lat,
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normalise_lng,
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unnormalise_lat,
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unnormalise_lng,
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normalise_gateway_distance,
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unnormalise_gateway_distance,
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normalise_rssi,
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unnormalise_rssi
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};
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