/*!
 * Copyright (c) Microsoft Corporation.
 * Licensed under the MIT License.
 */
export declare class OctTreeNode {
    minBoundsX: number;
    minBoundsY: number;
    minBoundsZ: number;
    maxBoundsX: number;
    maxBoundsY: number;
    maxBoundsZ: number;
    centerOfMassX: number;
    centerOfMassY: number;
    centerOfMassZ: number;
    children: OctTreeNode[];
    ids: Uint32Array;
    parent: OctTreeNode;
    level: number;
    mass: number;
    octKey: string;
}
export interface IOctTreeHelperOptions {
    ids: Uint32Array;
    positionsX: Float64Array;
    positionsY: Float64Array;
    positionsZ: Float64Array;
    masses: Float64Array;
    minBoundsX: number;
    minBoundsY: number;
    minBoundsZ: number;
    maxBoundsX: number;
    maxBoundsY: number;
    maxBoundsZ: number;
    maxLevel: number;
}
export declare class OctTreeHelper {
    private _ids;
    private _positionsX;
    private _positionsY;
    private _positionsZ;
    private _masses;
    private _maxLevel;
    root: OctTreeNode;
    constructor(options: IOctTreeHelperOptions);
    private _buildTree;
}