import '../../assert/js/assert.js';
import '../../globals.js';
/**
 * Basic 4-dimensional vector, represented as (x,y).
 *
 * @author Jonathan Olson <jonathan.olson@colorado.edu>
 */
import Pool, { TPoolable } from '../../phet-core/js/Pool.js';
import Vector3 from './Vector3.js';
export default class Vector4 implements TPoolable {
    x: number;
    y: number;
    z: number;
    w: number;
    /**
     * Creates a 4-dimensional vector with the specified X, Y, Z and W values.
     *
     * @param x - X coordinate
     * @param y - Y coordinate
     * @param z - Z coordinate
     * @param w - W coordinate
     */
    constructor(x: number, y: number, z: number, w: number);
    /**
     * The magnitude (Euclidean/L2 Norm) of this vector, i.e. $\sqrt{x^2+y^2+z^2+w^2}$.
     */
    getMagnitude(): number;
    get magnitude(): number;
    /**
     * The squared magnitude (square of the Euclidean/L2 Norm) of this vector, i.e. $x^2+y^2+z^2+w^2$.
     */
    getMagnitudeSquared(): number;
    get magnitudeSquared(): number;
    /**
     * The Euclidean distance between this vector (treated as a point) and another point.
     */
    distance(point: Vector4): number;
    /**
     * The Euclidean distance between this vector (treated as a point) and another point (x,y,z,w).
     */
    distanceXYZW(x: number, y: number, z: number, w: number): number;
    /**
     * The squared Euclidean distance between this vector (treated as a point) and another point.
     */
    distanceSquared(point: Vector4): number;
    /**
     * The squared Euclidean distance between this vector (treated as a point) and another point (x,y,z,w).
     */
    distanceSquaredXYZW(x: number, y: number, z: number, w: number): number;
    /**
     * The dot-product (Euclidean inner product) between this vector and another vector v.
     */
    dot(v: Vector4): number;
    /**
     * The dot-product (Euclidean inner product) between this vector and another vector (x,y,z,w).
     */
    dotXYZW(x: number, y: number, z: number, w: number): number;
    /**
     * The angle between this vector and another vector, in the range $\theta\in[0, \pi]$.
     *
     * Equal to $\theta = \cos^{-1}( \hat{u} \cdot \hat{v} )$ where $\hat{u}$ is this vector (normalized) and $\hat{v}$
     * is the input vector (normalized).
     */
    angleBetween(v: Vector4): number;
    /**
     * Exact equality comparison between this vector and another vector.
     *
     * @param other
     * @returns - Whether the two vectors have equal components
     */
    equals(other: Vector4): boolean;
    /**
     * Approximate equality comparison between this vector and another vector.
     *
     * @returns - Whether difference between the two vectors has no component with an absolute value greater
     *                      than epsilon.
     */
    equalsEpsilon(other: Vector4, epsilon: number): boolean;
    /**
     * Returns false if any component is NaN, infinity, or -infinity. Otherwise returns true.
     */
    isFinite(): boolean;
    /**
     * Creates a copy of this vector, or if a vector is passed in, set that vector's values to ours.
     *
     * This is the immutable form of the function set(), if a vector is provided. This will return a new vector, and
     * will not modify this vector.
     *
     * @param  [vector] - If not provided, creates a v4 with filled in values. Otherwise, fills in the
     *                    values of the provided vector so that it equals this vector.
     */
    copy(vector?: Vector4): Vector4;
    /**
     * Normalized (re-scaled) copy of this vector such that its magnitude is 1. If its initial magnitude is zero, an
     * error is thrown.
     *
     * This is the immutable form of the function normalize(). This will return a new vector, and will not modify this
     * vector.
     */
    normalized(): Vector4;
    /**
     * Returns a copy of this vector with each component rounded by Utils.roundSymmetric.
     *
     * This is the immutable form of the function roundSymmetric(). This will return a new vector, and will not modify
     * this vector.
     */
    roundedSymmetric(): Vector4;
    /**
     * Re-scaled copy of this vector such that it has the desired magnitude. If its initial magnitude is zero, an error
     * is thrown. If the passed-in magnitude is negative, the direction of the resulting vector will be reversed.
     *
     * This is the immutable form of the function setMagnitude(). This will return a new vector, and will not modify
     * this vector.
     *
     */
    withMagnitude(magnitude: number): Vector4;
    /**
     * Copy of this vector, scaled by the desired scalar value.
     *
     * This is the immutable form of the function multiplyScalar(). This will return a new vector, and will not modify
     * this vector.
     */
    timesScalar(scalar: number): Vector4;
    /**
     * Same as timesScalar.
     *
     * This is the immutable form of the function multiply(). This will return a new vector, and will not modify
     * this vector.
     */
    times(scalar: number): Vector4;
    /**
     * Copy of this vector, multiplied component-wise by the passed-in vector v.
     *
     * This is the immutable form of the function componentMultiply(). This will return a new vector, and will not modify
     * this vector.
     */
    componentTimes(v: Vector4): Vector4;
    /**
     * Addition of this vector and another vector, returning a copy.
     *
     * This is the immutable form of the function add(). This will return a new vector, and will not modify
     * this vector.
     */
    plus(v: Vector4): Vector4;
    /**
     * Addition of this vector and another vector (x,y,z,w), returning a copy.
     *
     * This is the immutable form of the function addXYZW(). This will return a new vector, and will not modify
     * this vector.
     */
    plusXYZW(x: number, y: number, z: number, w: number): Vector4;
    /**
     * Addition of this vector with a scalar (adds the scalar to every component), returning a copy.
     *
     * This is the immutable form of the function addScalar(). This will return a new vector, and will not modify
     * this vector.
     */
    plusScalar(scalar: number): Vector4;
    /**
     * Subtraction of this vector by another vector v, returning a copy.
     *
     * This is the immutable form of the function subtract(). This will return a new vector, and will not modify
     * this vector.
     */
    minus(v: Vector4): Vector4;
    /**
     * Subtraction of this vector by another vector (x,y,z,w), returning a copy.
     *
     * This is the immutable form of the function subtractXYZW(). This will return a new vector, and will not modify
     * this vector.
     */
    minusXYZW(x: number, y: number, z: number, w: number): Vector4;
    /**
     * Subtraction of this vector by a scalar (subtracts the scalar from every component), returning a copy.
     *
     * This is the immutable form of the function subtractScalar(). This will return a new vector, and will not modify
     * this vector.
     */
    minusScalar(scalar: number): Vector4;
    /**
     * Division of this vector by a scalar (divides every component by the scalar), returning a copy.
     *
     * This is the immutable form of the function divideScalar(). This will return a new vector, and will not modify
     * this vector.
     */
    dividedScalar(scalar: number): Vector4;
    /**
     * Negated copy of this vector (multiplies every component by -1).
     *
     * This is the immutable form of the function negate(). This will return a new vector, and will not modify
     * this vector.
     *
     */
    negated(): Vector4;
    /**
     * A linear interpolation between this vector (ratio=0) and another vector (ratio=1).
     *
     * @param vector
     * @param ratio - Not necessarily constrained in [0, 1]
     */
    blend(vector: Vector4, ratio: number): Vector4;
    /**
     * The average (midpoint) between this vector and another vector.
     */
    average(vector: Vector4): Vector4;
    /**
     * Debugging string for the vector.
     */
    toString(): string;
    /**
     * Converts this to a 3-dimensional vector, discarding the w-component.
     */
    toVector3(): Vector3;
    /**
     * Sets all of the components of this vector, returning this.
     */
    setXYZW(x: number, y: number, z: number, w: number): Vector4;
    /**
     * Sets the x-component of this vector, returning this.
     */
    setX(x: number): Vector4;
    /**
     * Sets the y-component of this vector, returning this.
     */
    setY(y: number): Vector4;
    /**
     * Sets the z-component of this vector, returning this.
     */
    setZ(z: number): Vector4;
    /**
     * Sets the w-component of this vector, returning this.
     */
    setW(w: number): Vector4;
    /**
     * Sets this vector to be a copy of another vector.
     *
     * This is the mutable form of the function copy(). This will mutate (change) this vector, in addition to returning
     * this vector itself.
     */
    set(v: Vector4): Vector4;
    /**
     * Sets the magnitude of this vector. If the passed-in magnitude is negative, this flips the vector and sets its
     * magnitude to abs( magnitude ).
     *
     * This is the mutable form of the function withMagnitude(). This will mutate (change) this vector, in addition to
     * returning this vector itself.
     */
    setMagnitude(magnitude: number): Vector4;
    /**
     * Adds another vector to this vector, changing this vector.
     *
     * This is the mutable form of the function plus(). This will mutate (change) this vector, in addition to
     * returning this vector itself.
     */
    add(v: Vector4): Vector4;
    /**
     * Adds another vector (x,y,z,w) to this vector, changing this vector.
     *
     * This is the mutable form of the function plusXYZW(). This will mutate (change) this vector, in addition to
     * returning this vector itself.
     */
    addXYZW(x: number, y: number, z: number, w: number): Vector4;
    /**
     * Adds a scalar to this vector (added to every component), changing this vector.
     *
     * This is the mutable form of the function plusScalar(). This will mutate (change) this vector, in addition to
     * returning this vector itself.
     */
    addScalar(scalar: number): Vector4;
    /**
     * Subtracts this vector by another vector, changing this vector.
     *
     * This is the mutable form of the function minus(). This will mutate (change) this vector, in addition to
     * returning this vector itself.
     */
    subtract(v: Vector4): Vector4;
    /**
     * Subtracts this vector by another vector (x,y,z,w), changing this vector.
     *
     * This is the mutable form of the function minusXYZW(). This will mutate (change) this vector, in addition to
     * returning this vector itself.
     */
    subtractXYZW(x: number, y: number, z: number, w: number): Vector4;
    /**
     * Subtracts this vector by a scalar (subtracts each component by the scalar), changing this vector.
     *
     * This is the mutable form of the function minusScalar(). This will mutate (change) this vector, in addition to
     * returning this vector itself.
     */
    subtractScalar(scalar: number): Vector4;
    /**
     * Multiplies this vector by a scalar (multiplies each component by the scalar), changing this vector.
     *
     * This is the mutable form of the function timesScalar(). This will mutate (change) this vector, in addition to
     * returning this vector itself.
     */
    multiplyScalar(scalar: number): Vector4;
    /**
     * Multiplies this vector by a scalar (multiplies each component by the scalar), changing this vector.
     * Same as multiplyScalar.
     *
     * This is the mutable form of the function times(). This will mutate (change) this vector, in addition to
     * returning this vector itself.
     */
    multiply(scalar: number): Vector4;
    /**
     * Multiplies this vector by another vector component-wise, changing this vector.
     *
     * This is the mutable form of the function componentTimes(). This will mutate (change) this vector, in addition to
     * returning this vector itself.
     */
    componentMultiply(v: Vector4): Vector4;
    /**
     * Divides this vector by a scalar (divides each component by the scalar), changing this vector.
     *
     * This is the mutable form of the function dividedScalar(). This will mutate (change) this vector, in addition to
     * returning this vector itself.
     */
    divideScalar(scalar: number): Vector4;
    /**
     * Negates this vector (multiplies each component by -1), changing this vector.
     *
     * This is the mutable form of the function negated(). This will mutate (change) this vector, in addition to
     * returning this vector itself.
     */
    negate(): Vector4;
    /**
     * Normalizes this vector (rescales to where the magnitude is 1), changing this vector.
     *
     * This is the mutable form of the function normalized(). This will mutate (change) this vector, in addition to
     * returning this vector itself.
     */
    normalize(): Vector4;
    /**
     * Rounds each component of this vector with Utils.roundSymmetric.
     *
     * This is the mutable form of the function roundedSymmetric(). This will mutate (change) this vector, in addition
     * to returning the vector itself.
     */
    roundSymmetric(): Vector4;
    freeToPool(): void;
    static readonly pool: Pool<typeof Vector4>;
    isVector4: boolean;
    dimension: number;
    static ZERO: Vector4;
    static X_UNIT: Vector4;
    static Y_UNIT: Vector4;
    static Z_UNIT: Vector4;
    static W_UNIT: Vector4;
}
declare const v4: (x: number, y: number, z: number, w: number) => Vector4;
export { v4 };
//# sourceMappingURL=Vector4.d.ts.map