import { type SharedValue } from "react-native-reanimated";
import type { ChartEngineLayout } from "../core/useLiveChartEngine";
import type { ChartPadding } from "../draw/line";
import type { LiveChartPoint } from "../types";
export interface ReferenceLineSeriesGeometry {
    /** Visible series polyline as `[x, y, …]` screen coordinates. */
    screenPts: SharedValue<number[]>;
    /** Whether any series segment crosses the visible plot. */
    visible: SharedValue<boolean>;
    /** Series value at the chart's current right edge. */
    currentValue: SharedValue<number>;
    /** Canvas Y coordinate of {@link currentValue}. */
    currentY: SharedValue<number>;
    /** Whether the current-value label belongs inside the visible plot. */
    currentVisible: SharedValue<boolean>;
}
/**
 * UI-thread geometry for a static historical reference-line series. Point
 * buffers ping-pong so Reanimated observes a changed array reference each frame
 * without allocating new intermediate arrays.
 */
export declare function useReferenceLineSeries(engine: ChartEngineLayout, padding: ChartPadding, points: LiveChartPoint[], extendToStart: boolean, extendToNow: boolean): ReferenceLineSeriesGeometry;
//# sourceMappingURL=useReferenceLineSeries.d.ts.map