declare const BaseAnnotationTool: any;
import { Coords, EventData, Handles, MeasurementData } from "../types";
/**
 * @public
 * @class NorbergAngleTool
 * @memberof Tools.Annotation
 * @classdesc Tool for measuring distances with adjustable angle segments at both endpoints.
 * Shows angle arcs and allows 45-degree adjustment segments.
 * @extends Tools.Base.BaseAnnotationTool
 */
export default class NorbergAngleTool extends BaseAnnotationTool {
    configuration: any;
    constructor(props?: any);
    createNewMeasurement(eventData: EventData): MeasurementData | undefined;
    pointNearTool(element: HTMLElement, data: MeasurementData, coords: Coords): boolean;
    activateHandleNearCursor(element: HTMLElement, handles: Handles, coords: Coords, distanceThreshold: number): void;
    updateCachedStats(image: any, element: HTMLElement, data: MeasurementData): void;
    drawAngleArc(context: CanvasRenderingContext2D, centerPoint: Coords, startAngleDegrees: number, endAngleDegrees: number, radius: number, color: string, counterClockwise?: boolean): void;
    drawAngleLabel(context: CanvasRenderingContext2D, point: Coords, angle: number, labelAngle: number, distance: number, color: string): void;
    renderToolData(evt: any): void;
}
export {};