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Add geojson compliant decoding parameter #34

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Add geojson compliant decoding parameter #34

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15 changes: 12 additions & 3 deletions javascript/index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -27,7 +27,8 @@ const CUSTOM2 = 7;

const Num = typeof BigInt !== "undefined" ? BigInt : Number;

function decode(encoded) {
function decode(encoded, params = {geojson: false}) {
const { geojson } = params
const decoder = decodeUnsignedValues(encoded);
const header = decodeHeader(decoder[0], decoder[1]);

Expand All @@ -46,14 +47,22 @@ function decode(encoded) {
const deltaLng = toSigned(decoder[i + 1]) / factorDegree;
lastLat += deltaLat;
lastLng += deltaLng;

let point

if (geojson) {
point = [lastLng, lastLat]
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@Jordan-Work Jordan-Work Mar 23, 2021 •
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(L31,54,56)
Hey may want to toss a ; on these I've got caught doing that too

} else {
point = [lastLat, lastLng]
}

if (thirdDim) {
const deltaZ = toSigned(decoder[i + 2]) / factorZ;
lastZ += deltaZ;
res.push([lastLat, lastLng, lastZ]);
res.push([...point, lastZ]);
i += 3;
} else {
res.push([lastLat, lastLng]);
res.push(point);
i += 2;
}
}
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