/*!
 * Copyright (c) Microsoft Corporation.
 * Licensed under the MIT License.
 */
export declare class SdfHelper {
    private static _circle;
    private static _box;
    private static _create;
    static circle(imageWidth: number, imageHeight: number, radius: number, edgeValue: number): ImageData;
    static box(imageWidth: number, imageHeight: number, boxWidth: number, boxHeight: number, edgeValue: number, rounding?: number): ImageData;
}