import { Box3, Vector2, Vector3 } from 'three';
import { StructureNode } from '../plugin-types';
/**
 * 射线法判断点是否在多边形内
 */
export declare function pointInPolygon(px: number, py: number, polygon: Vector2[]): boolean;
/**
 * 判断两线段是否相交
 */
export declare function segmentsIntersect(ax1: number, ay1: number, ax2: number, ay2: number, bx1: number, by1: number, bx2: number, by2: number): boolean;
/**
 * 判断多边形与矩形是否相交或包含
 */
export declare function polygonIntersectsRect(polygon: Vector2[], minX: number, minY: number, maxX: number, maxY: number): boolean;
/**
 * 将 structure 中的 bbox 数组转为 Box3。
 * 约定与 `selectByBox` 一致：`[minX, minY, minZ, maxX, maxY, maxZ]`，至少 6 个数。
 */
export declare function bboxArrayToBox3(bbox: number[] | undefined): Box3 | null;
/**
 * 从 OID 节点映射中按 Box3 范围筛选构件
 */
export declare function selectByBoxFromOidMap(oidNodeMap: Map<number, StructureNode>, box: Box3): number[];
/**
 * 从 OID 节点映射中按多边形（平面投影）范围筛选构件
 */
export declare function selectByPolygonFromOidMap(oidNodeMap: Map<number, StructureNode>, polygon: Vector3[], axis?: "xy" | "xz" | "yz"): number[];
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