import type { Dimensions } from "../../../core/domain/types.js";
export interface WinterWindVector {
    x: number;
    y: number;
}
export interface WinterWindStats {
    gustActive: boolean;
    gustProgress: number;
    pointerSpeed: number;
}
interface WinterWindFieldOptions {
    seed?: number;
    random?: () => number;
}
/**
 * Produces one continuous velocity field for the winter snow.
 *
 * Neighboring flakes sample neighboring parts of the same field, so a gust
 * reads as weather crossing the screen instead of hundreds of unrelated
 * particles changing direction at once.
 */
export declare class WinterWindField {
    private readonly noise;
    private readonly random;
    private time;
    private framesUntilGust;
    private reducedMotion;
    private gust;
    private pointer;
    private pointerWakes;
    private nextPointerWakeSpin;
    constructor(options?: WinterWindFieldOptions);
    initialize(): void;
    update(frameMultiplier?: number): void;
    sample(x: number, y: number, depth: number, dimensions: Dimensions): WinterWindVector;
    setPointer(x: number, y: number, active: boolean): void;
    setReducedMotion(reducedMotion: boolean): void;
    triggerGust(direction?: -1 | 1): void;
    getStats(): WinterWindStats;
    private samplePointerWake;
    private randomRange;
}
export {};
//# sourceMappingURL=WinterWindField.d.ts.map