import { Color, Group, Texture, Vector3, InstancedMesh, Material, Matrix4, Camera } from 'three';
export declare const CLOUD_URL = "https://rawcdn.githack.com/pmndrs/drei-assets/9225a9f1fbd449d9411125c2f419b843d0308c9f/cloud.png";
type CloudState = {
    ref: Group;
    uuid: string;
    index: number;
    segments: number;
    dist: number;
    matrix: Matrix4;
    bounds: Vector3;
    position: Vector3;
    volume: number;
    length: number;
    speed: number;
    growth: number;
    opacity: number;
    fade: number;
    density: number;
    rotation: number;
    rotationFactor: number;
    color: Color;
};
type CloudsProps = {
    texture?: Texture | undefined;
    limit?: number;
    range?: number;
    material?: typeof Material;
    frustumCulled?: boolean;
};
type CloudProps = {
    seed?: number;
    segments?: number;
    bounds?: Vector3;
    concentrate?: 'random' | 'inside' | 'outside';
    scale?: Vector3;
    volume?: number;
    smallestVolume?: number;
    distribute?: ((cloud: CloudState, index: number) => {
        point: Vector3;
        volume?: number;
    }) | null;
    growth?: number;
    speed?: number;
    fade?: number;
    opacity?: number;
    color?: Color;
};
export declare class Clouds extends Group {
    ref: Group;
    instance: InstancedMesh;
    cloudMaterial: Material;
    update: (camera: Camera, time: number, delta: number) => void;
    constructor({ limit, range, material, texture, frustumCulled }?: CloudsProps);
}
export declare class Cloud extends Group {
    seed: number;
    segments: number;
    bounds: Vector3;
    concentrate: string;
    volume: number;
    smallestVolume: number;
    distribute: ((cloud: CloudState, index: number) => {
        point: Vector3;
        volume?: number | undefined;
    }) | null;
    growth: number;
    speed: number;
    fade: number;
    opacity: number;
    color: Color;
    ref: any;
    cloudStateArray: CloudState[];
    constructor({ opacity, speed, bounds, segments, color, fade, volume, smallestVolume, distribute, growth, concentrate, seed, }?: CloudProps);
    updateCloudStateArray(): void;
    updateCloud(): void;
}
export {};