import { Base, Type } from "igniteui-angular-core/ES2015/type";
import { RingSeriesVisualDataList } from "./RingSeriesVisualDataList";
import { RectData } from "igniteui-angular-core/ES2015/RectData";
/**
 * @hidden
 */
export declare class DoughnutChartVisualData extends Base {
    static $t: Type;
    private _series;
    series: RingSeriesVisualDataList;
    private _height;
    height: number;
    private _width;
    width: number;
    private _holeRadius;
    holeRadius: number;
    private _dipScalingRatio;
    dipScalingRatio: number;
    constructor();
    scaleByViewport(): void;
    serialize(): string;
    private _viewport;
    viewport: RectData;
}
