import { IMeasure, MeasurementOptions, MeasurementRecord } from '../types';
import { HtmlOverlayLabelPool } from '../../HtmlOverlayLabelPool';
export default class TerrainHeightMeasure implements IMeasure {
    private Cesium;
    private viewer;
    private handler;
    private labelEntity;
    private htmlLabelPool;
    private htmlLabelId;
    private topPoint;
    private zeroPoint;
    private lineEntity;
    constructor(Cesium: any, viewer: any);
    start(options: MeasurementOptions): void;
    stop(): void;
    clear(): void;
    rehydrate(record: MeasurementRecord, htmlLabelPool?: HtmlOverlayLabelPool): void;
}