export declare type ZoomSource = 'touch' | 'wheel' | 'doubleclick';
export declare type ZoomFunction = (delta: number, ox: number, oy: number, type: ZoomSource) => void;
export declare type ZoomTouch = {
    cx: number;
    cy: number;
    distance: number;
};
export declare class Zoom {
    element: HTMLElement;
    intensity: number;
    onZoom: ZoomFunction;
    previous: ZoomTouch | null;
    pointers: Map<number, PointerEvent>;
    destroy: () => void;
    constructor(container: HTMLElement, element: HTMLElement, intensity: number, onZoom: ZoomFunction);
    get isMultitouched(): boolean;
    wheel(event: WheelEvent): void;
    touches(): ZoomTouch;
    down(event: PointerEvent): void;
    move(event: PointerEvent): void;
    end(event: PointerEvent): void;
    doubleclick(event: MouseEvent): void;
}