import { Box2, Box3, Vector2, Vector3 } from 'three';
import { PatchBoundId } from './common_types.js';
/**
 * @param point input point inside bounding box
 * @param points surrounding points which must remain outside bounding box
 * @param bounds
 * @returns largest bounding box including input point while excluding surrounding points
 */
export declare const findBoundingBox: (point: Vector2, points: Vector2[], bounds: Box2) => Box2;
export declare const bboxContainsPointXZ: (bbox: Box3, point: Vector3) => boolean;
/**
 *
 * y2 - p12-----p22
 *       |   + p |
 *       |       |
 * y1 - p11-----p21
 *       |       |
 *       x1      x2
 *
 * @param p
 * @param p11
 * @param p12
 * @param p22
 * @param p21
 * @returns
 */
export declare const bilinearInterpolation: (p: Vector2, bounds: Box2, boundingVals: Record<PatchBoundId, Record<string, number>>) => any;
export declare function smoothStep(x: number, min: number, max: number): number;
/**
 * Inverse distance weighting (IDW)
 * @param cornersPoints
 * @param point
 */
export declare const roundToDec: (val: number, n_pow: number) => number;
export declare const vectRoundToDec: (input: Vector2 | Vector3, n_pow: number) => Vector2 | Vector3;
export declare const clamp: (val: number, min: number, max: number) => number;