Function getSign

src/chart/candlestick/candlestickLayout.ts:230–254

* Get the sign of a single data. * * @returns 0 for doji with hasDojiColor: true, * 1 for positive, * -1 for negative.

(
    store: DataStore, dataIndex: number, openVal: number, closeVal: number, closeDimI: DimensionIndex,
    hasDojiColor: boolean
)

 *          -1 for negative.
 */
function getSign(
    store: DataStore, dataIndex: number, openVal: number, closeVal: number, closeDimI: DimensionIndex,
    hasDojiColor: boolean
): -1 | 1 | 0 {
    let sign: -1 | 1 | 0;
    if (openVal > closeVal) {
        sign = -1;
    }
    else if (openVal < closeVal) {
        sign = 1;
    }
    else {
        sign = hasDojiColor
            // When doji color is set, use it instead of color/color0.
            ? 0
            : (dataIndex > 0
                // If close === open, compare with close of last record
                ? ((store.get(closeDimI, dataIndex - 1) as number) <= closeVal ? 1 : -1)
                // No record of previous, set to be positive
                : 1
            );
    }

    return sign;
}

function calculateCandleWidth(seriesModel: CandlestickSeriesModel, data: SeriesData) {
    const baseAxis = seriesModel.getBaseAxis();