Function isZeroOnPolar

libs/echarts/echarts.simple.js:42604–42608

(layout)

};

function isZeroOnPolar(layout) {
    return layout.startAngle != null
        && layout.endAngle != null
        && layout.startAngle === layout.endAngle;
}

function updateStyle(
    el, data, dataIndex, itemModel, layout, seriesModel, isHorizontal, isPolar