Function updateSingleMarkerEndLayout

src/component/marker/MarkLineView.ts:199–261

(
    data: SeriesData<MarkLineModel>,
    idx: number,
    isFrom: boolean,
    seriesModel: SeriesModel,
    api: ExtensionAPI
)

}

function updateSingleMarkerEndLayout(
    data: SeriesData<MarkLineModel>,
    idx: number,
    isFrom: boolean,
    seriesModel: SeriesModel,
    api: ExtensionAPI
) {
    const coordSys = seriesModel.coordinateSystem;
    const itemModel = data.getItemModel<MarkLine2DDataItemOption[number]>(idx);

    let point;
    const xPx = numberUtil.parsePercent(itemModel.get('x'), api.getWidth());
    const yPx = numberUtil.parsePercent(itemModel.get('y'), api.getHeight());
    if (!isNaN(xPx) && !isNaN(yPx)) {
        point = [xPx, yPx];
    }
    else {
        // Chart like bar may have there own marker positioning logic
        if (seriesModel.getMarkerPosition) {
            // Use the getMarkerPosition
            point = seriesModel.getMarkerPosition(
                data.getValues(data.dimensions, idx)
            );
        }
        else {
            const dims = coordSys.dimensions;
            const x = data.get(dims[0], idx);
            const y = data.get(dims[1], idx);
            point = coordSys.dataToPoint([x, y]);
        }
        // Expand line to the edge of grid if value on one axis is Inifnity
        // In case
        //  markLine: {
        //    data: [{
        //      yAxis: 2
        //      // or
        //      type: 'average'
        //    }]
        //  }
        if (isCoordinateSystemType<Cartesian2D>(coordSys, 'cartesian2d')) {
            // TODO: TYPE ts@4.1 may still infer it as Axis instead of Axis2D. Not sure if it's a bug
            const xAxis = coordSys.getAxis('x') as Axis2D;
            const yAxis = coordSys.getAxis('y') as Axis2D;
            const dims = coordSys.dimensions;
            if (isInfinity(data.get(dims[0], idx))) {
                point[0] = xAxis.toGlobalCoord(xAxis.getExtent()[isFrom ? 0 : 1]);
            }
            else if (isInfinity(data.get(dims[1], idx))) {
                point[1] = yAxis.toGlobalCoord(yAxis.getExtent()[isFrom ? 0 : 1]);
            }
        }

        // Use x, y if has any
        if (!isNaN(xPx)) {
            point[0] = xPx;
        }
        if (!isNaN(yPx)) {
            point[1] = yPx;