import { float4, float3x3, float3 } from "./vector";
declare class _quat {
    v: float4;
    constructor(v: float4);
    create(v: float4): this;
    neg(): this;
    conj(): this;
    add(b: this): _quat;
    sub(b: this): _quat;
    mul(b: this): this;
    div(b: this): this;
    scale(n: number): _quat;
    recip(): this;
    mag(): any;
    magsq(): any;
    normalise(): _unitQuat;
    closest(b: quaternion): this;
    to3x3(): float3x3;
    transform(v: float3): float3;
    toString(): string;
}
export type quaternion = _quat;
export declare const quaternion: ((v: float4) => _quat) & {
    exp(q: quaternion): _quat;
    log(q: quaternion): quaternion;
};
export default quaternion;
declare class _unitQuat extends _quat {
    recip(): this;
    cosang(b: this): number;
    to3x3(): float3x3;
    rotate(v: float3): float3;
    toAxisAngle(): {
        axis: float3;
        angle: number;
    };
    toEulerZYX(): float3;
}
export type unitQuaternion = _unitQuat;
export declare const unitQuaternion: ((v: float4) => _unitQuat) & {
    identity(): _unitQuat;
    from3x3(mat: float3x3): unitQuaternion;
    fromEulerZYX(angles: float3): unitQuaternion;
    fromAxisAngle(axis: float3, angle: number): unitQuaternion;
    between(a: float3, b: float3): _unitQuat;
    pow(q: unitQuaternion, y: number): _unitQuat;
    log(q: unitQuaternion): quaternion;
    slerp(a: unitQuaternion, b: unitQuaternion, t: number): unitQuaternion;
    squad(q0: unitQuaternion, a: unitQuaternion, b: unitQuaternion, q1: unitQuaternion, t: number): unitQuaternion;
};