import { Animated } from "react-native";
export type Energy = "calm" | "default" | "energetic";
export interface BackdropClock {
    /** Master 0..1 ramp over the flight period. Layers derive staggered sawtooth
     *  phases from it, so every layer stays locked to one timeline. */
    flight: Animated.Value;
    /** Shimmer, 0..1..0. Pulse, breathe, anything that swells and settles as one. */
    twinkle: Animated.Value;
    /** Scintillation ramp, a linear 0..1 SAWTOOTH at the flare period. The sawtooth
     *  is the point: it can be phase-shifted per body (see the renderer's buckets)
     *  so flares land at unrelated moments across the field, which a ping-pong
     *  cannot do without a discontinuity at the turn. */
    scintillate: Animated.Value;
    /** Very slow 0..1 ramp (180s). Rotation, hue drift, anything near-static. */
    drift: Animated.Value;
    /** Medium 0..1..0 breath (11s). Scale and opacity swells. */
    breath: Animated.Value;
    /** Rare event cycle: parked, then a sweep. Comets, meteors, flashes. */
    event: Animated.Value;
}
/** Read a clock without retaining it (renderers bind interpolations to these). */
export declare function backdropClock(energy: Energy): BackdropClock;
/** Bind a Backdrop to its clock. Idempotent per mode; refcounted per energy. */
export declare function retainBackdropClock(energy: Energy, want: "running" | "poster"): void;
/** Release a Backdrop; the last release stops every timer for that energy,
 *  capturing the flight phase for the next retain. */
export declare function releaseBackdropClock(energy: Energy): void;
/** Test seam: drop every clock so a suite starts from a known state. */
export declare function resetBackdropClocks(): void;
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