/**
 * 3D Tooltip for displaying information on hover.
 * Creates a DOM element that follows the mouse and shows data.
 */
export interface Tooltip3DOptions {
    /** CSS class for the tooltip container */
    className?: string;
    /** Offset from cursor in pixels */
    offsetX?: number;
    offsetY?: number;
    /** Custom formatter function */
    formatter?: (data: Tooltip3DData) => string;
    /** Show position coordinates */
    showPosition?: boolean;
    /** Show value/scale */
    showScale?: boolean;
    /** Show index */
    showIndex?: boolean;
    /** Decimal places for numbers */
    decimals?: number;
}
export interface Tooltip3DData {
    index: number;
    position: [number, number, number];
    color?: [number, number, number];
    scale?: number;
    customData?: Record<string, any>;
}
export declare class Tooltip3D {
    private container;
    private element;
    private options;
    private visible;
    constructor(container: HTMLElement, options?: Tooltip3DOptions);
    /**
     * Show tooltip with data at screen position.
     */
    show(data: Tooltip3DData, screenX: number, screenY: number): void;
    /**
     * Hide the tooltip.
     */
    hide(): void;
    /**
     * Check if tooltip is visible.
     */
    isVisible(): boolean;
    /**
     * Default formatting for tooltip content.
     */
    private defaultFormat;
    /**
     * Update tooltip position (for mouse move without data change).
     */
    updatePosition(screenX: number, screenY: number): void;
    /**
     * Destroy the tooltip.
     */
    destroy(): void;
}
/**
 * Create a hover handler for bubble charts.
 * Returns a function to attach to mouse move events.
 */
export declare function createHoverHandler(renderer: any, // Bubble3DRenderer
tooltip: Tooltip3D, options?: {
    debounceMs?: number;
    onHover?: (hit: {
        index: number;
        data: any;
    } | null) => void;
}): (event: MouseEvent) => void;