import * as THREE from 'three';
declare class Airflow extends THREE.Group {
    needsRender: boolean;
    private startTime?;
    private inner;
    private outer;
    constructor();
    setTime(time: number): void;
    get expand(): number;
    set expand(value: number);
    get speed(): number;
    set speed(value: number);
    get color(): THREE.Color;
    set color(value: THREE.Color);
    get flowColor(): THREE.Color;
    set flowColor(value: THREE.Color);
}
export { Airflow };