import { NgtVector2 } from "@angular-three/core";
import { Object3D } from "three";
interface ObjectSizeData {
    object: Object3D;
    width: number;
    height: number;
}
export declare abstract class Layout {
    private group;
    protected updateFlag: boolean;
    private _margin;
    get margin(): NgtVector2;
    set margin(newvalue: NgtVector2);
    constructor(group: Object3D);
    protected reflow(group: Object3D): void;
    protected listen(group: Object3D): void;
    protected changed: (event: any) => void;
    update(force?: boolean): void;
    protected getSizes(children: Array<Object3D>): Array<ObjectSizeData>;
}
export declare class HorizontalLayout extends Layout {
    constructor(group: Object3D);
    reflow(group: Object3D): void;
    listen(group: Object3D): void;
}
export declare class VerticalLayout extends Layout {
    constructor(group: Object3D);
    reflow(group: Object3D): void;
    listen(group: Object3D): void;
}
export {};