import { Polygon, MultiPolygon, Sketch, SketchCollection } from "../types/index.js";
/**
 * Returns a zero polygon geometry (three [0,0] coordinates)
 * @param sketch
 */
export declare function zeroPolygon(): {
    type: string;
    coordinates: number[][][];
};
/**
 * Given sketch, returns the mutated sketch with a zero polygon geometry (three [0,0] coordinates)
 * @param sketch
 */
export declare function zeroSketch<G extends Polygon | MultiPolygon>(sketch: Sketch): Sketch<G>;
/**
 * Given sketch array, returns the mutated sketches with a zero polygon geometry (three [0,0] coordinates)
 * @param sketch
 */
export declare function zeroSketchArray<G extends Polygon | MultiPolygon>(sketches: Sketch<G>[]): Sketch<G>[];
/**
 * Given sketch collection, returns the mutated collection with all child sketches switched to have zero polygon geometry (three [0,0] coordinates)
 * @param sketchCollection
 */
export declare function zeroSketchCollection<G extends Polygon | MultiPolygon>(sketchCollection: SketchCollection<G>): SketchCollection<G>;