import { RingSectionItem, RingSectionsPartition } from './ring-chart.model';
export declare class RingChartService {
    private static readonly NUM_OF_DEGREES_RING;
    private static readonly INITIAL_OFFSET_DEGREES_SEMI;
    constructor();
    getRingSectionsPartition(sections: RingSectionItem[]): RingSectionsPartition;
    validateSections(sections: RingSectionItem[]): void;
    getThickness(thickness: number, diameter: number): number;
    private getSemiRotation;
    private getLeftRemainder;
}