export * from './contours.js';
export * from './grid.js';
export * from './hillshade.js';
export * from './mesh.js';
/** Elevation converter */
export type ElevationConverter = (r: number, g: number, b: number, a?: number) => number;
/**
 * Conver a Terrarium tile encoded elevation data into a float precision elevation
 * Terrarium formula: (red * 256 + green + blue / 256) - 32768
 * @param r - red
 * @param g - green
 * @param b - blue
 * @returns - elevation
 */
export declare function convertTerrariumElevationData(r: number, g: number, b: number): number;
/**
 * Conver a Mapbox tile encoded elevation data into a float precision elevation
 * Mapbox formula: -10000 + (red * 256 * 256 + green * 256 + blue) * 0.1
 * @param r - red
 * @param g - green
 * @param b - blue
 * @returns - elevation
 */
export declare function convertMapboxElevationData(r: number, g: number, b: number): number;
/**
 * Encode a float precision elevation into Terrarium tile encoded elevation data.
 * Terrarium formula: (red * 256 + green + blue / 256) - 32768
 * @param elevation - The elevation value to encode
 * @returns - the encoded elevation as RGB
 */
export declare function encodeTerrariumElevationData(elevation: number): [r: number, g: number, b: number, a?: number];
/**
 * Encode a float precision elevation into Mapbox tile encoded elevation data
 * Mapbox formula: -10000 + (red * 256 * 256 + green * 256 + blue) * 0.1
 * @param elevation - The elevation value to encode
 * @returns - the encoded elevation as RGB
 */
export declare function encodeMapboxElevationData(elevation: number): [r: number, g: number, b: number, a?: number];
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