import { Arc, Face, Quadratic, Bezier } from './index';
import type { Point } from './Point';
import { Segment } from './Segment';
export type EdgeShape = Segment | Arc | Quadratic | Bezier;
/**
 * Class representing an edge of polygon. Edge shape may be Segment or Arc.
 * Each edge contains references to the next and previous edges in the face of the polygon.
 */
export declare class Edge<T extends EdgeShape = EdgeShape> {
    static EMPTY: Readonly<Edge<Readonly<Segment>>>;
    /** Shape of the edge: Segment or Arc */
    shape: T;
    /** Pointer to the next edge in the face */
    next: Edge;
    /** Pointer to the previous edge in the face */
    prev: Edge;
    /** Pointer to the face containing this edge */
    face: Face;
    /** "Arc distance" from the face start */
    arc_length: number;
    /** Start inclusion flag (inside/outside/boundary) */
    bvStart: any;
    /** End inclusion flag (inside/outside/boundary) */
    bvEnd: any;
    /** Edge inclusion flag (INSIDE, OUTSIDE, BOUNDARY) */
    bv: any;
    /** Overlap flag for boundary edge (Overlap.SAME/Overlap.OPPOSITE) */
    overlap: any;
    /**
     * Construct new instance of edge
     * @param shape Shape of type Segment or Arc
     */
    constructor(shape: T);
    /** Get edge start point */
    get start(): Point;
    /** Get edge end point */
    get end(): Point;
    /** Get edge length */
    get length(): number;
    /** Get bounding box of the edge */
    get box(): import("./Box").Box;
    isSegment(): this is Edge<Segment>;
    isArc(): this is Edge<Arc>;
    /** Get middle point of the edge */
    middle(): Point;
    /** Get point at given length */
    pointAtLength(length: number): Point;
    /** Returns true if point belongs to the edge, false otherwise */
    contains(pt: Point): boolean;
    /**
     * Set inclusion flag of the edge with respect to another polygon
     * Inclusion flag is one of INSIDE, OUTSIDE, BOUNDARY
     */
    setInclusion(polygon: any): any;
    /**
     * Set overlapping between two coincident boundary edges
     * Overlapping flag is one of Overlap.SAME or Overlap.OPPOSITE
     */
    setOverlap(edge: any): void;
    toJSON(): any;
}
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