import { PlaitBoard, PlaitElement, Point, Selection, ThemeColorMode } from '@plait/core';
import { Freehand, FreehandShape } from './type';
export declare function getFreehandPointers(): FreehandShape[];
export declare const createFreehandElement: (shape: FreehandShape, points: Point[]) => Freehand;
export declare const isHitFreehand: (board: PlaitBoard, element: Freehand, point: Point) => boolean;
export declare const isRectangleHitFreehand: (board: PlaitBoard, element: Freehand, selection: Selection) => boolean;
export declare const getSelectedFreehandElements: (board: PlaitBoard) => PlaitElement[];
export declare const getFreehandDefaultStrokeColor: (theme: ThemeColorMode) => string;
export declare const getFreehandDefaultFill: (theme: ThemeColorMode) => string;
export declare const getStrokeColorByElement: (board: PlaitBoard, element: PlaitElement) => any;
export declare const getFillByElement: (board: PlaitBoard, element: PlaitElement) => any;
export declare function gaussianWeight(x: number, sigma: number): number;
export declare function gaussianSmooth(points: Point[], sigma: number, windowSize: number): Point[];