import type { Dimensions, QualityLevel } from "../../../core/domain/types.js";
import type { SnowOpticalClass } from "./models/winter-models.js";
export declare const SNOW_OPTICS_URL = "/images/backgrounds/winter/snow-optics.webp";
export declare const SNOW_LIGHT_RESPONSES: Record<SnowOpticalClass, number>;
export interface SnowAtlasCell {
    x: number;
    y: number;
    width: number;
    height: number;
    focus: number;
}
export declare const SNOW_ATLAS_CELLS: readonly SnowAtlasCell[];
export interface SnowBandTargets {
    powder: number;
    crystal: number;
    foreground: number;
}
interface SnowOpticalFields {
    opticalClass: SnowOpticalClass;
    opticalVariant: number;
    opticalFocus: number;
    opticalScale: number;
    opticalAlpha: number;
}
export declare function getSnowBandTargets(total: number, dimensions: Dimensions, quality: QualityLevel | string): SnowBandTargets;
export declare function getForegroundBirthX(width: number, random: () => number): number;
export declare function getSnowGustStretch(windVelocityX: number, windVelocityY: number): number;
export declare function getSnowWindTilt(windVelocityX: number, windVelocityY: number): number;
export declare function createSnowOpticalFields(opticalClass: SnowOpticalClass, baseSize: number, dimensions: Dimensions, random: () => number): SnowOpticalFields;
export {};
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