import { THREE } from "@x-viewer/core";
import { type BaseViewer, EventInfo, InputManager, OSnapHelper, DrawableList } from "@x-viewer/core";
import { AreaMeasureDrawable } from "./AreaMeasureDrawable";
import { BaseMeasurement } from "./BaseMeasurement";
export declare class AreaMeasurement extends BaseMeasurement {
    constructor(viewer: BaseViewer, input: InputManager, drawList: DrawableList, osnapHelper: OSnapHelper);
    activate(): void;
    deactivate(): void;
    protected createMeasureDrawable(): AreaMeasureDrawable | undefined;
    protected onMouseMove(position: THREE.Vector3): void;
    protected onMouseClick(e: EventInfo): void;
    exitDrawing(): void;
    protected complete(): void;
    cancel(): void;
    protected setTooltipContent(): void;
    /**
     * Gets the scale value.
     */
    getScale(): number | undefined;
    /**
     * Sets the scale value.
     */
    setScale(scale: number): void;
}