/**
 * A vector with 4 components, labeled: `X`, `Y`, `Z`, `W`.
 */
export declare class Vector4 {
    /**
     * The components of the vector.
     */
    k: number[];
    /**
     * Get the X component of the vector.
     * @returns The X component of the vector.
     */
    get x(): number;
    /**
     * Set the X component of the vector.
     */
    set x(value: number);
    /**
     * Get the Y component of the vector.
     * @returns The Y component of the vector.
     */
    get y(): number;
    /**
     * Set the Y component of the vector.
     */
    set y(value: number);
    /**
     * Get the Z component of the vector.
     * @returns The Z component of the vector.
     */
    get z(): number;
    /**
     * Set the Z component of the vector.
     */
    set z(value: number);
    /**
     * Get the W component of the vector.
     * @returns The W component of the vector.
     */
    get w(): number;
    /**
     * Set the W component of the vector.
     */
    set w(value: number);
    /**
     * Constructs a new {@linkcode Vector4}.
     * @param x - The X component.
     * @param y - The Y component.
     * @param z - The Z component.
     * @param w - The W component.
     */
    constructor(x: number, y: number, z: number, w: number);
    /**
     * Creates a copy of another {@linkcode Vector4}.
     * @param vector - The vector to copy.
     * @returns A new vector.
     */
    static fromVector4(vector: Readonly<Vector4>): Vector4;
    /**
     * Sets the vector to new coordinates.
     * @param vector - The coordinates to set the vector to.
     * @returns This instance.
     */
    set(vector: Readonly<Vector4>): this;
    /**
     * Sets the vector to new coordinates.
     * @param x - The new X component for the vector.
     * @param y - The new Y component for the vector.
     * @param z - The new Z component for the vector.
     * @param w - The new W component for the vector.
     * @returns This instance.
     */
    setXYZW(x: number, y: number, z: number, w: number): this;
    /**
     * Adds the XYZ components of another vector to this vector.
     * @param vector - The vector to add to this vector.
     * @returns This instance.
     */
    add3(vector: Readonly<Vector4>): this;
    /**
     * Adds the XYZ components of another vector to this vector.
     * @param x - The value to add to the X component.
     * @param y - The value to add to the Y component.
     * @param z - The value to add to the Z component.
     * @returns This instance.
     */
    add3XYZ(x: number, y: number, z: number): this;
    /**
     * Scales another vector and adds its XYZ components to this vector.
     * @param vector - The vector to add to this vector.
     * @param scale - The scaling to apply to the input vector.
     * @returns This instance.
     */
    addMultiply3(vector: Readonly<Vector4>, scale: number): this;
    /**
     * Scales another vector and adds its XYZ components to this vector.
     * @param x - The value to add to the X component.
     * @param y - The value to add to the Y component.
     * @param z - The value to add to the Z component.
     * @param scale - The scaling to apply to the input vector.
     * @returns This instance.
     */
    addMultiply3XYZ(x: number, y: number, z: number, scale: number): this;
    /**
     * Subtracts the XYZ components of another vector from this vector.
     * @param vector - The vector to subtract from this vector.
     * @returns This instance.
     */
    subtract3(vector: Readonly<Vector4>): this;
    /**
     * Subtracts the XYZ components of another vector from this vector.
     * @param x - The value to subtract from the X component.
     * @param y - The value to subtract from the Y component.
     * @param z - The value to subtract from the Z component.
     * @returns This instance.
     */
    subtract3XYZ(x: number, y: number, z: number): this;
    /**
     * Multiplies the XYZ components of this vector by another vector.
     * @param vector - The vector to multiply with this vector.
     * @returns This instance.
     */
    multiply3(vector: Readonly<Vector4>): this;
    /**
     * Multiplies the XYZ components of this vector by another vector.
     * @param x - The value to multiply with the X component.
     * @param y - The value to multiply with the Y component.
     * @param z - The value to multiply with the Z component.
     * @returns This instance.
     */
    multiply3XYZ(x: number, y: number, z: number): this;
    /**
     * Multiplies the XYZ components of the vector by the given scale.
     * @param scale - The scaling to apply to the vector.
     * @returns This instance.
     */
    multiply3Scale(scale: number): this;
    /**
     * Divides the XYZ components of this vector by another vector.
     * @param vector - The vector to divide this vector with.
     * @returns This instance.
     */
    divide3(vector: Readonly<Vector4>): this;
    /**
     * Divides the XYZ components of this vector by another vector.
     * @param x - The value to divide the X component with.
     * @param y - The value to divide the Y component with.
     * @param z - The value to divide the Z component with.
     * @returns This instance.
     */
    divide3XYZ(x: number, y: number, z: number): this;
    /**
     * Divides the XYZ components of the vector by the given scale.
     * @param scale - The scaling to apply to the vector.
     * @returns This instance.
     */
    divide3Scale(scale: number): this;
    /**
     * Inverts the direction of the vector.
     * @returns This instance.
     */
    invertAdd3(): this;
    /**
     * Inverts the vectors scale.
     * @returns This instance.
     */
    invertMultiply3(): this;
    /**
     * Clamps the components of the vector at the given boundary.
     * @param floor - The lowest value to allow.
     * @param ceil - The largest value to allow.
     * @returns This instance.
     */
    clamp(floor: number, ceil: number): this;
    /**
     * Linearly moves this vector towards a target vector.
     * @param vector - The target vector.
     * @param t - The location on the scale, from `0` to `1`.
     * @returns This instance.
     */
    lerp(vector: Readonly<Vector4>, t: number): this;
}