import { setPixelAlphaFn, setPixelFn } from "./types";
/**
 * Circle rasterisation
 */
export declare function circle(xm: number, ym: number, r: number, setPixel: setPixelFn): void;
/**
 * Draw a black anti-aliased circle on white background
 */
export declare function circleAA(xm: number, ym: number, r: number, setPixelAA: setPixelAlphaFn): void;