import { BoundsItem } from '../BoundsItem';
import { Node } from '../Node';
import { PointItem } from '../PointItem';
import { mInt32 } from '../Raw';
/**
 * 对地图的一次节点筛选
 */
export declare class Selection {
    constructor();
    _getAreaBounds(nodeBounds: BoundsItem, viewBounds: BoundsItem, scaleFactor: number): BoundsItem;
    _compare(a: mInt32, b: mInt32): mInt32;
    _getTopDescendants(node: Node, selectNum: number): PointItem[];
}