import type { VecOpVVO } from "./api.js";
/**
 * Computes nD direction vector `a`->`b`, normalized to length `n` (default 1).
 *
 * @param out - output vector
 * @param a - input vector
 * @param b - input vector
 * @param n - scalar
 */
export declare const direction: VecOpVVO<number>;
/**
 * Computes 2D direction vector `a`->`b`, normalized to length `n` (default 1).
 *
 * @param out - output vector
 * @param a - input vector
 * @param b - input vector
 * @param n - scalar
 */
export declare const direction2: VecOpVVO<number>;
/**
 * Computes 3D direction vector `a`->`b`, normalized to length `n` (default 1).
 *
 * @param out - output vector
 * @param a - input vector
 * @param b - input vector
 * @param n - scalar
 */
export declare const direction3: VecOpVVO<number>;
//# sourceMappingURL=direction.d.ts.map