import { BodyGroup, BodyOptions, BodyType, PotentialVector } from "../model";
import { Polygon } from "./polygon";
export interface EllipseConstructor<TEllipse extends Ellipse> {
    new (position: PotentialVector, radiusX: number, radiusY?: number, step?: number, options?: BodyOptions): TEllipse;
}
/**
 * collider - ellipse
 */
export declare class Ellipse<UserDataType = any> extends Polygon<UserDataType> {
    /**
     * ellipse type
     */
    readonly type: BodyType.Ellipse;
    /**
     * faster than type
     */
    readonly typeGroup: BodyGroup.Ellipse;
    /**
     * ellipses are convex
     */
    readonly isConvex = true;
    /**
     * inner initial params save
     */
    protected _radiusX: number;
    protected _radiusY: number;
    protected _step: number;
    /**
     * collider - ellipse
     */
    constructor(position: PotentialVector, radiusX: number, radiusY?: number, step?: number, options?: BodyOptions<UserDataType>);
    /**
     * flag to set is body centered
     */
    set isCentered(_isCentered: boolean);
    /**
     * is body centered?
     */
    get isCentered(): boolean;
    /**
     * get ellipse step number
     */
    get step(): number;
    /**
     * set ellipse step number
     */
    set step(step: number);
    /**
     * get ellipse radiusX
     */
    get radiusX(): number;
    /**
     * set ellipse radiusX, update points
     */
    set radiusX(radiusX: number);
    /**
     * get ellipse radiusY
     */
    get radiusY(): number;
    /**
     * set ellipse radiusY, update points
     */
    set radiusY(radiusY: number);
    /**
     * do not attempt to use Polygon.center()
     */
    center(): void;
    /**
     * do not attempt to use Polygon.updateIsConvex()
     */
    protected updateIsConvex(): void;
}