import { ICloneable, IEquatable } from '@chemistry/common';
import { Matrix3x3 } from './matrix3x3.js';
import { Vec3 } from './vec3.js';
/**
 * Simple Class to work with Quaternion
 */
export declare class Quaternion implements ICloneable<Quaternion>, IEquatable<Quaternion> {
    /**
     * Get Quaternion from Axis angle
     */
    static fromAxisAngle(axis: Vec3, angle: number): Quaternion;
    static equals(q1: Quaternion, q2: Quaternion): boolean;
    protected data: number[];
    constructor(x: number, y: number, z: number, w: number);
    /**
     * X Component
     */
    X(): number;
    /**
     * Y Component
     */
    Y(): number;
    /**
     * Z Component
     */
    Z(): number;
    /**
     * W Component
     */
    W(): number;
    get length(): number;
    normalize(): Quaternion;
    conjugate(): Quaternion;
    multiply(q: Quaternion): Quaternion;
    rotateVec3(v: Vec3): Vec3;
    toMatrix3x3(): Matrix3x3;
    clone(): Quaternion;
    equals(q: Quaternion): boolean;
    toString(): string;
}
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