import { ISvgParams } from './interfaces';
import { Tree } from './Tree';
import { TreeLayout } from './TreeLayout';
import { LogLevelDescType } from 'loglevel-colored-prefix';
export declare class Circular extends TreeLayout {
    private logger;
    constructor(tree: Tree, svgParams: ISvgParams, loglevel?: LogLevelDescType);
    /**
     * Calculates all parameters of the tree
     *
     * @param {boolean} scaling
     * @returns {this}
     * @memberof Circular
     */
    calcTree(scaling: boolean): this;
    /**
     * Calculates the branch path
     *
     * @returns {this}
     * @memberof Circular
     */
    calcBranchPath(): this;
    /**
     * Helper function to place label by the corresponding node
     *
     * @param {number} id
     * @returns {string}
     * @memberof Circular
     */
    labelPlace(id: number): string;
    /**
     * Helper function to determine the anchor of text
     *
     * @param {number} id
     * @returns {string}
     * @memberof Circular
     */
    labelAnchor(id: number): string;
    private calcAngle;
    private calcRadius;
}