import Point from '../../geo/Point';
import Coordinate from '../../geo/Coordinate';
import { PointExtent } from '../../geo';
export declare function clipLine(points: any, bounds: any, round?: boolean, noCut?: boolean): any[];
export declare function clipSegment(a: any, b: any, min: Point, max: Point, useLastCode: any, round: any, noCut: any): false | any[];
export declare function clipPolygon(points: any, bounds: PointExtent, round?: boolean): any;
/**
 * caculate the distance from a point to a segment.
 * @param p
 * @param p1
 * @param p2
 * @return distance from p to (p1, p2)
 * @memberOf Util
 */
export declare function distanceToSegment(p: Point, p1: Point, p2: Point): number;
/**
 * Whether the coordinate is inside the polygon
 * @param p
 * @param points
 * @return
 * @memberOf Util
 */
export declare function pointInsidePolygon(p: Coordinate, points: Coordinate[]): boolean;
/**
 * Is the point within an ellipse
 * @param  point
 * @param  center ellipse's center
 * @param  southeast ellipse's southeast point
 * @param  tolerance
 * @returns
 * @private
 * @memberOf Util
 */
export declare function withInEllipse(point: Point, center: Point, southeast: Point, tolerance: number): boolean;
export declare function getMinMaxAltitude(altitude: number | number[] | number[][] | number[][][]): [number, number];
/**
 * point left segment
 * @param p
 * @param p1
 * @param p2
 * @returns
 */
export declare function pointLeftSegment(p: Point, p1: Point, p2: Point): boolean;
/**
 *
 * LT--------------------RT
 *   \                  /
 *    \                /
 *     \              /
 *      LB-----------RB
 *        camera behind
 *
 * Points within a convex quadrilateral
 * @param point
 * @param p1
 * @param p2
 * @param p3
 * @param p4
 * @returns
 */
export declare function pointInQuadrilateral(p: Point, LT: Point, RT: Point, RB: Point, LB: Point): boolean;
/**
 * 直线和直线的交点
 * Intersection of two line
 * @param p1
 * @param p2
 * @param p3
 * @param p4
 * @returns
 */
export declare function lineIntersection(p1: Point, p2: Point, p3: Point, p4: Point): Point | null;
/**
 *  Does it contain altitude values
 * @param altitudes
 * @returns
 */
export declare function altitudesHasData(altitudes: number | Array<number>): boolean;
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