import { Coords, EventData, HandlePosition, Handles, MeasurementMouseEvent, VHSAnnotationData, VHSCachedStats } from "../types";
declare const BaseAnnotationTool: any;
export default class VHSAnnotationTool extends BaseAnnotationTool {
    private currentState;
    private currentAnnotation;
    private isDragging;
    private _throttledMouseMove;
    private _throttledMouseDrag;
    constructor(props?: Record<string, unknown>);
    createNewMeasurement(eventData: EventData): VHSAnnotationData | null;
    calculateDistance(point1: Coords, point2: Coords): number;
    addNewMeasurement(evt: MeasurementMouseEvent): VHSAnnotationData | null;
    mouseMoveCallback(evt: MeasurementMouseEvent): void;
    private _mouseMoveImpl;
    mouseDragCallback(evt: MeasurementMouseEvent): void;
    private _mouseDragImpl;
    private _completeSegment;
    mouseUpCallback(evt: MeasurementMouseEvent): void;
    preMouseDownCallback(evt: MeasurementMouseEvent): void;
    private _autoPositionTextBox;
    renderToolData(evt: MeasurementMouseEvent): void;
    drawProjectionVisualization(context: CanvasRenderingContext2D, element: HTMLElement, handles: Handles, label: string, color: string, offset: number, cachedStats: VHSCachedStats): void;
    drawTick(context: CanvasRenderingContext2D, element: HTMLElement, point: Coords, angle: number, color: string): void;
    updateCachedStats(image: unknown, element: HTMLElement, data: VHSAnnotationData): VHSCachedStats;
    pointNearTool(element: HTMLElement, data: VHSAnnotationData, coords: Coords, interactionType: string): boolean;
    isPointNearHandle(element: HTMLElement, handle: HandlePosition, coords: Coords, distance: number): boolean;
    isPointNearLine(element: HTMLElement, startHandle: HandlePosition, endHandle: HandlePosition, coords: Coords, distance: number): boolean;
    distanceToLineSegment(point: Coords, lineStart: Coords, lineEnd: Coords): number;
    getHandleNearImagePoint(element: HTMLElement, data: VHSAnnotationData, coords: Coords, interactionType: string): HandlePosition | null;
}
export {};