import { WebGL } from "./WebGL";
export declare class Ripples extends WebGL {
    ID?: string;
    visible: boolean;
    running: boolean;
    destroyed: boolean;
    initialized: boolean;
    constructor(...options: ConstructorParameters<typeof WebGL>);
    drop(x: number, y: number, radius: number, strength: number): void;
    updateSize: () => void;
    show(): void;
    hide(): void;
    pause(): void;
    play(): void;
    destroy(): void;
    reloadImage(): Promise<void>;
    private cacheTargetPositions;
    private setupWebGL;
    private setupPointerEvents;
    private onClick;
    private onTouch;
    private onMouseMove;
    private get pointerEventsEnabled();
    private step;
    private computeBackgroundSize;
    private computeTextureBoundaries;
    private translateBackgroundPosition;
    private restoreCSSBackground;
    private dropAtPointer;
}