import { ProjectionBase } from '.';
import type { En } from '../common';
import type { VectorPoint } from '../../geometry';
import type { ProjectionParams, ProjectionTransform } from '.';
/**
 * # Transverse Mercator
 *
 * **Classification**: Transverse and oblique cylindrical
 *
 * **Available forms**: Forward and inverse, spherical and ellipsoidal
 *
 * **Defined area**: Global, with full accuracy within 3900 km of the central meridian
 *
 * **Alias**: tmerc
 *
 * **Domain**: 2D
 *
 * **Input type**: Geodetic coordinates
 *
 * **Output type**: Projected coordinates
 *
 * ## Projection String
 * ```
 * +proj=tmerc
 * ```
 *
 * ## Required Parameters
 * - `+lon_0`: Longitude of the central meridian.
 *
 * ## Optional Parameters
 * - `+approx`: Use the faster Evenden-Snyder algorithm, less accurate beyond 3°.
 * - `+algo`: Select algorithm from "auto", "evenden_snyder", or "poder_engsager".
 * - `+lat_0`: Latitude of origin.
 * - `+k_0`: Scale factor on the central meridian.
 * - `+x_0`: False easting.
 * - `+y_0`: False northing.
 *
 * ![Transverse Mercator](https://github.com/Open-S2/s2-tools/blob/master/assets/proj4/projections/images/tmerc.png?raw=true)
 */
export declare class TransverseMercator extends ProjectionBase implements ProjectionTransform {
    name: string;
    static names: string[];
    en: En;
    ml0: number;
    /**
     * Preps an TransverseMercator projection
     * @param params - projection specific parameters
     */
    constructor(params?: ProjectionParams);
    /**
     * TransverseMercator forward equations--mapping lon-lat to x-y
     * @param p - lon-lat WGS84 point
     */
    forward(p: VectorPoint): void;
    /**
     * TransverseMercator inverse equations--mapping x-y to lon-lat
     * @param p - TransverseMercator point
     */
    inverse(p: VectorPoint): void;
}
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