Function lowerBoundByTimestamp

src/interaction/findCandlestick.ts:139–149

(data: ReadonlyArray<OHLCDataPoint>, xTarget: number)

};

const lowerBoundByTimestamp = (data: ReadonlyArray<OHLCDataPoint>, xTarget: number): number => {
  let lo = 0;
  let hi = data.length;
  while (lo < hi) {
    const mid = (lo + hi) >>> 1;
    const t = getTimestamp(data[mid]);
    if (t < xTarget) lo = mid + 1;
    else hi = mid;
  }
  return lo;
};

/**
 * Finds the candlestick body under the given cursor position.