import { type Viewport } from '../core/Viewport.js';
import { type Rect } from './Rect.js';
/**
 * Convert a {@link Rect} relative to a viewport into absolute coordinates,
 * while making sure the the rectangle is clipped to the viewport's absolute
 * rectangle.
 *
 * @category Helper
 */
export declare function clipRelativeRectToAbsoluteViewport(viewport: Viewport, viewportAbsoluteRect: Readonly<Rect>, rect: Readonly<Rect>): Rect | null;