/**
 * A tuple with 4 components: x, y, z, and w.
 */
export declare class Tuple4 {
    x: number;
    y: number;
    z: number;
    w: number;
    /**
     * Creates a new tuple from an existing one.
     * @param t the tuple.
     */
    static FromExisting(t: Tuple4): Tuple4;
    /**
     * Constructs a new tuple with 4 defined components.
     * @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);
    /**
     * Copies this tuple.
     * @returns a copy of this tuple.
     */
    clone(): Tuple4;
    /**
     * Determines if the components of this tuple equal those of another tuple.
     * @param o the tuple.
     * @returns true, if equals; false, otherwise.
     */
    equals(o: Tuple4): boolean;
}