import { BubbleState } from '../../models/internal/bubble-state';
import { ILayoutEngine } from '../../interfaces/i-layout-engine';
import { PhysicsLayoutConfig } from '../../models/public/configuration';
export declare class PhysicsLayout implements ILayoutEngine {
    private bubbles;
    private width;
    private height;
    private alpha;
    private cx;
    private cy;
    private readonly cfg;
    constructor(physicsConfig?: PhysicsLayoutConfig);
    initialize(bubbles: BubbleState[], width: number, height: number): void;
    tick(): boolean;
    update(bubbles: BubbleState[], width: number, height: number): void;
    dispose(): void;
    private computeRadii;
    private scatter;
    private stepPhysics;
}