import type { ViewportPoint, ViewportTransform } from './viewport.types.js';
export declare function anchoredTransform(anchor: ViewportPoint, viewport: ViewportPoint, scale: number): ViewportTransform;
export declare function contentPointFromViewport(viewportX: number, viewportY: number, transform: ViewportTransform): ViewportPoint;
export declare function centeredScaleTransform(scale: number, transform: ViewportTransform, viewportSize: {
    width: number;
    height: number;
}): ViewportTransform;