import { Box3 } from 'three/webgpu';
import { FloorComponent } from '../../../components/mesh/floor/FloorComponent.ts';
import { DIVENode } from '../../node/Node.ts';
/**
 * The scene node every entity hangs off, and the owner of the ground plane.
 *
 * It holds objects, it does not interpret them: turning entity data into
 * scene objects is the state plugin's job and lives in its `EngineGateway`.
 *
 * @module
 */
export declare class DIVERoot extends DIVENode {
    readonly isDIVERoot: true;
    /**
     * The ground plane component.
     *
     * Kept as a named accessor because scene settings address the floor
     * directly, rather than as an entity.
     */
    get floor(): FloorComponent;
    constructor();
    /**
     * The world bounding box of everything the scene actually contains.
     *
     * Helpers, gizmo handles and the floor are excluded by their layer, so no
     * per-class exceptions are needed here.
     */
    computeSceneBB(): Box3;
}