import { ContextManager, Observable } from '@zcomponent/core';
import { PhysicsVortexEvent, PhysicsEffect } from '../../index';
/**
 * Represents a vortex component.
 * @zcomponent
 * @ztag three/Vortex
 * @zicon cyclone
 * @zgroup Physics Forces
 * @zparents three/Object3D/Group/**
 */
export declare class Vortex extends PhysicsEffect {
    vortex: PhysicsVortexEvent | null;
    /**
     * Whether to display the debug mesh.
     * This is always false during runtime.
     * @zprop
     * @zdefault true
     */
    showHelper: Observable<boolean, never>;
    /**
     * @zprop
     * @zdefault 0.7
     * @ztype proportion
     */
    centripetalForceThreshold: number;
    /**
     * @zprop
     * @zdefault 5
     */
    centripetalForceMultiplier: number;
    /**
     * @zprop
     * @zdefault 0.5
     * @ztype proportion
     */
    centrifugalForceMultiplier: number;
    /**
     * @zprop
     * @zdefault 0.02
     */
    updraftForceMultiplier: number;
    /**
     * The strength of the effect.
     * @zprop
     * @zdefault 500
     */
    strength: Observable<number, never>;
    constructor(contextManager: ContextManager, constructorProps: {});
    private _frame;
    private helper;
    private _constructVortex;
    private worldScale;
    private getOptions;
    private constructCylinderFromOptions;
    private _running;
    private setEnabled;
    enable(): void;
    disable(): void;
    dispose: () => never;
}