/**
 * 吸附：将坐标或尺寸按 snapStep 取整；snapStep 为 0 不吸附
 */
export declare function snapValue(value: number, snapStep: number): number;
export declare function snapRect(x: number, y: number, width: number, height: number, snapStep: number): {
    x: number;
    y: number;
    width: number;
    height: number;
};