Function makeSeriesEncodeForAxisCoordSys

src/data/helper/sourceHelper.ts:99–185

(
    coordDimensions: (DimensionName | CoordDimensionDefinition)[],
    seriesModel: SeriesModel,
    source: Source
)

 * @return encode Never be `null/undefined`.
 */
export function makeSeriesEncodeForAxisCoordSys(
    coordDimensions: (DimensionName | CoordDimensionDefinition)[],
    seriesModel: SeriesModel,
    source: Source
): SeriesEncodeInternal {
    const encode: SeriesEncodeInternal = {};

    const datasetModel = querySeriesUpstreamDatasetModel(seriesModel);
    // Currently only make default when using dataset, util more reqirements occur.
    if (!datasetModel || !coordDimensions) {
        return encode;
    }

    const encodeItemName: DimensionIndex[] = [];
    const encodeSeriesName: DimensionIndex[] = [];

    const ecModel = seriesModel.ecModel;
    const datasetMap = innerGlobalModel(ecModel).datasetMap;
    const key = datasetModel.uid + '_' + source.seriesLayoutBy;

    let baseCategoryDimIndex: number;
    let categoryWayValueDimStart;
    coordDimensions = coordDimensions.slice();
    each(coordDimensions, function (coordDimInfoLoose, coordDimIdx) {
        const coordDimInfo: CoordDimensionDefinition = isObject(coordDimInfoLoose)
            ? coordDimInfoLoose
            : (coordDimensions[coordDimIdx] = { name: coordDimInfoLoose as DimensionName });
        if (coordDimInfo.type === 'ordinal' && baseCategoryDimIndex == null) {
            baseCategoryDimIndex = coordDimIdx;
            categoryWayValueDimStart = getDataDimCountOnCoordDim(coordDimInfo);
        }
        encode[coordDimInfo.name] = [];
    });

    const datasetRecord = datasetMap.get(key)
        || datasetMap.set(key, {categoryWayDim: categoryWayValueDimStart, valueWayDim: 0});

    // TODO
    // Auto detect first time axis and do arrangement.
    each(coordDimensions, function (coordDimInfo: CoordDimensionDefinition, coordDimIdx) {
        const coordDimName = coordDimInfo.name;
        const count = getDataDimCountOnCoordDim(coordDimInfo);

        // In value way.
        if (baseCategoryDimIndex == null) {
            const start = datasetRecord.valueWayDim;
            pushDim(encode[coordDimName], start, count);
            pushDim(encodeSeriesName, start, count);
            datasetRecord.valueWayDim += count;

            // ??? TODO give a better default series name rule?
            // especially when encode x y specified.
            // consider: when multiple series share one dimension
            // category axis, series name should better use
            // the other dimension name. On the other hand, use
            // both dimensions name.
        }
        // In category way, the first category axis.