import * as THREE from 'three';
import type { PointCloudPlacement } from './pointCloudPlacement';
/** The part of a potree octree node this needs. Boxes are in the octree's own space. */
export interface PointNodeLike {
    numPoints?: number;
    boundingBox?: THREE.Box3;
}
/**
 * Points-weighted centre of the loaded nodes. A scan often carries a few stray returns hundreds of
 * metres out, and a bounding-box centre would follow them; weighting by point count does not.
 */
export declare function weightedCentroid(nodes: Iterable<PointNodeLike>): THREE.Vector3 | null;
/** Falls back to a box centre when nothing has streamed in yet. */
export declare function centroidOrBoxCentre(nodes: Iterable<PointNodeLike>, box: THREE.Box3 | undefined): THREE.Vector3 | null;
/** The placement that puts `worldCentre` on the scene origin. Only T moves: the matrix is T·R·S,
 *  so a shift in T moves the cloud by exactly that much whatever its rotation and scale. */
export declare function placementCentredOn(placement: PointCloudPlacement, worldCentre: THREE.Vector3): PointCloudPlacement;
//# sourceMappingURL=pointCloudCentroid.d.ts.map