import { vops } from './vector';
interface WithZero<T> {
    zero(): T;
}
export declare class statistics1 {
    sum: number;
    sum2: number;
    min: number;
    max: number;
    count: number;
    static from<U extends Iterable<number>>(items: U): statistics1;
    add(v: number): this;
    get mean(): number;
    get variance(): number;
    get standardDeviation(): number;
}
export declare class statistics<T extends vops<T>> {
    Type: WithZero<T>;
    sum: T;
    sum2: T;
    min: T;
    max: T;
    count: number;
    static from<T extends vops<T>, U extends Iterable<T>>(items: U, Type?: WithZero<T>): statistics<T>;
    constructor(Type: WithZero<T>);
    add(v: T): this;
    get mean(): T;
    get variance(): T;
}
export interface rgb {
    r: number;
    g: number;
    b: number;
}
export interface hsv {
    h: number;
    s: number;
    v: number;
}
export declare class colour implements rgb {
    r: number;
    g: number;
    b: number;
    static fromHSV(h: number, s: number, v: number): colour;
    static fromRGB(r: number, g: number, b: number): colour;
    constructor(r: number, g: number, b: number);
    rgb(): this;
    hsv(): hsv;
}
export {};