Function decode

test/data/map/decode.js:20–58

(json)

*/

function decode(json) {
    if (json.UTF8Encoding) {
        return;
    }
    var jsonCompressed = json;
    var encodeScale = jsonCompressed.UTF8Scale;
    if (encodeScale == null) {
        encodeScale = 1024;
    }

    var features = jsonCompressed.features;
    features.forEach(function (feature) {
        var geometry = feature.geometry;
        var encodeOffsets = geometry.encodeOffsets;
        var coordinates = geometry.coordinates;

        // Geometry may be appended manually in the script after json loaded.
        // In this case this geometry is usually not encoded.
        if (!encodeOffsets) {
            return;
        }

        switch (geometry.type) {
            case 'LineString':
                geometry.coordinates = decodeRing(coordinates, encodeOffsets, encodeScale);
                break;
            case 'Polygon':
            case 'MultiLineString':
                decodeRings(coordinates, encodeOffsets, encodeScale);
                break;
            case 'MultiPolygon':
                zrUtil.each(coordinates, function (rings, idx) {
                    return decodeRings(rings, encodeOffsets[idx], encodeScale)
                });
        }
    });
    // Has been decoded
    jsonCompressed.UTF8Encoding = false;
}

function decodeRings(rings, encodeOffsets, encodeScale) {
    for (var c = 0; c < rings.length; c++) {