import { DateTime } from 'luxon';
import { PlanetPosition } from '../engine/ephemeris.js';
/**
 * Calculates Pranapada Lagna.
 * Formula depends on Sun's sign (Movable/Fixed/Dual).
 */
/**
 * Calculates Pranapada Lagna.
 * Formula depends on Sun's sign (Movable/Fixed/Dual).
 */
export declare function calculatePranapada(birthTime: DateTime, sunrise: DateTime, sunLong: number): number;
/**
 * Calculates Indu Lagna (Wealth Point).
 * Based on rays of 9th lords from Lagna and Moon.
 */
export declare function calculateInduLagna(ascendantSign: number, // 1-12
moonSign: number, // 1-12
planets: PlanetPosition[]): number;
/**
 * Calculates Shree Lagna (Placeholder/Basic).
 */
export declare function calculateShreeLagna(birthTime: DateTime, sunrise: DateTime, moonLong: number): number;
/**
 * Calculates Hora Lagna (HL).
 * Formula: Lagna + 2 * (Time - Sunrise).
 * Parashara definition: Speed is 2x Sun (approx 1 sign in 1 hour).
 */
export declare function calculateHoraLagna(birthTime: DateTime, sunrise: DateTime, ascendantLong: number): number;
export declare function calculateGhatiLagna(birthTime: DateTime, sunrise: DateTime, sunLong: number): number;
export declare function calculateBhavaLagna(birthTime: DateTime, sunrise: DateTime, sunLong: number): number;
/**
 * Calculates Varnada Lagna (VL).
 * JHora Algorithm.
 */
export declare function calculateVarnadaLagna(ascendantLong: number, horaLagnaLong: number, ascendantSign: number, // 1-12
horaLagnaSign: number): number;