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import type { CartesianCoordinate, HorizontalCoordinate } from './common';
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/**
 *
 * convertHorizontalToStereo()
 *
 * @param horizontalCoordinate
 * @param width
 * @param height
 * @returns the Cartesian Coordinate { x, y } conversion to the stereographic projection
 */
export declare const convertHorizontalToStereo: (target: HorizontalCoordinate, extent: {
    width: number;
    height: number;
}, focus?: number) => CartesianCoordinate;
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/**
 *
 * convertStereoToHorizontal()
 *
 * @param cartesianCoordinate representing the { x, y } position of a particular point to transform.
 * @param width (of type number) representing the width of the projected "canvas"
 * @param height (of type number) representing the height of the projected "canvas"
 * @returns the Horizontal Coordinate { alt, az } conversion from the stereographic projection
 */
export declare const convertStereoToHorizontal: (cartesianCoordinate: CartesianCoordinate, extent: {
    width: number;
    height: number;
}, focus?: number) => HorizontalCoordinate;
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