import * as THREE from "three";
type ObjectState = {
    local: number[];
    pose: string;
    world: number[];
    parent: THREE.Object3D | null;
    parentRevision: number;
    worldRevision: number;
    revision: number;
    signature: string;
    children: number[];
    bounds: THREE.Box3;
};
/** A cheap hierarchy scan detects edits; matrix products and bounds unions are incremental.
 * Call invalidate after writing raw buffers without setting attribute.needsUpdate. */
export declare class SceneGraphCache {
    private objects;
    private geometries;
    private visited;
    private clock;
    private seenGeometries;
    private identities;
    private identity;
    readonly metrics: {
        worldMatrices: number;
        bounds: number;
        geometries: number;
    };
    begin(): void;
    invalidate(roots: THREE.Object3D[]): void;
    private world;
    private geometry;
    inspect(object: THREE.Object3D): ObjectState;
}
export {};
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