Function isHit

src/interaction/findPointsAtX.ts:192–198

(xCenterRange: number)

          let hitIndex = -1;

          const isHit = (xCenterRange: number): boolean => {
            if (!Number.isFinite(xCenterRange)) return false;
            const left = xCenterRange + offsetLeftFromCategoryCenter;
            const right = left + barWidth;
            // Expanded interval: [left - tol, right + tol)
            return xValue >= left - hitTol && xValue < right + hitTol;
          };

          if (seriesHasNaNX(data, isTuple)) {
            // NaN breaks ordering; linear scan for correctness.