import { Feature, Polygon } from "@turf/helpers";
/**
 * Returns the direction of the point q relative to the vector p1 -> p2.
 *
 * Implementation of geos::algorithm::CGAlgorithm::orientationIndex()
 * (same as geos::algorithm::CGAlgorithm::computeOrientation())
 *
 * @param {number[]} p1 - the origin point of the vector
 * @param {number[]} p2 - the final point of the vector
 * @param {number[]} q - the point to compute the direction to
 *
 * @returns {number} - 1 if q is ccw (left) from p1->p2,
 *    -1 if q is cw (right) from p1->p2,
 *     0 if q is colinear with p1->p2
 */
export declare function orientationIndex(p1: number[], p2: number[], q: number[]): number;
/**
 * Checks if two envelopes are equal.
 *
 * The function assumes that the arguments are envelopes, i.e.: Rectangular polygon
 *
 * @param {Feature<Polygon>} env1 - Envelope
 * @param {Feature<Polygon>} env2 - Envelope
 * @returns {boolean} - True if the envelopes are equal
 */
export declare function envelopeIsEqual(env1: Feature<Polygon>, env2: Feature<Polygon>): boolean;
/**
 * Check if a envelope is contained in other one.
 *
 * The function assumes that the arguments are envelopes, i.e.: Convex polygon
 * XXX: Envelopes are rectangular, checking if a point is inside a rectangule is something easy,
 * this could be further improved.
 *
 * @param {Feature<Polygon>} self - Envelope
 * @param {Feature<Polygon>} env - Envelope
 * @returns {boolean} - True if env is contained in self
 */
export declare function envelopeContains(self: Feature<Polygon>, env: Feature<Polygon>): boolean;
/**
 * Checks if two coordinates are equal.
 *
 * @param {number[]} coord1 - First coordinate
 * @param {number[]} coord2 - Second coordinate
 * @returns {boolean} - True if coordinates are equal
 */
export declare function coordinatesEqual(coord1: number[], coord2: number[]): boolean;