import SoonSpace, { PoiNode } from 'soonspacejs';
import { BufferGeometry, Camera, Line, LineBasicMaterial, Mesh, MeshBasicMaterial, Object3D, Scene, Sprite, SpriteMaterial, Vector3 } from 'three';
import { Options } from './utils/ProjectSettingsDef';
export declare enum MeasuringMode {
    Distance = "Distance",
    Area = "Area",
    Angle = "Angle"
}
/**
 * MeasuringPlugin
 */
declare class MeasuringPlugin {
    readonly ssp: SoonSpace;
    static LINE_MATERIAL: LineBasicMaterial;
    static MESH_MATERIAL: MeshBasicMaterial;
    static MAX_DISTANCE: number;
    static OBJ_NAME: string;
    static LABEL_NAME: string;
    mode: MeasuringMode | null;
    protected options: Required<Options>;
    protected scene: Scene;
    protected camera: Camera;
    protected spriteMaterial?: SpriteMaterial;
    objectsStore: Set<Object3D<import("three").Object3DEventMap>>;
    onCancel: () => void;
    onDone: () => void;
    protected pointMarkers: Sprite[];
    protected polyline?: Line;
    protected faces?: Mesh;
    protected curve?: Line;
    protected labels: PoiNode[];
    protected pointArray: Vector3[];
    protected tempPointMarker?: Sprite;
    protected tempLine?: Line;
    protected tempLabel?: PoiNode;
    protected lastClickTime?: number;
    constructor(ssp: SoonSpace);
    get domElement(): HTMLDivElement;
    /**
     * Starts the measurement
     */
    start(mode?: MeasuringMode, options?: Options): void;
    /**
     * Ends the measurement
     */
    close(): void;
    cancel(): void;
    clear(): void;
    /**
     * Initializes point marker material
     */
    initPointMarkerMaterial(): void;
    /**
     * Creates point marker
     */
    private createPointMarker;
    /**
     * Creates Line
     */
    private createLine;
    /**
     * Creates Mesh
     */
    private createFaces;
    /**
     * Draw completed
     */
    done(): void;
    mousemove: (e: MouseEvent) => void;
    dblclick: (e: MouseEvent) => void;
    click: (e: MouseEvent) => void;
    keydown: (e: KeyboardEvent) => void;
    /**
     * The the closest intersection
     * @param e
     */
    getClosestIntersection: (e: MouseEvent) => Vector3 | null | undefined;
    /**
     * Adds or update temp label and position
     */
    addOrUpdateTempLabel(label: string, position: Vector3): void;
    /**
     * Creates label
     */
    createLabel(text: string): PoiNode;
    /**
     * Creates the arc curve to indicate the angle in degree
     */
    createCurve(p0: Vector3, p1: Vector3, p2: Vector3): Line<BufferGeometry<import("three").NormalBufferAttributes>, LineBasicMaterial, import("three").Object3DEventMap>;
    /**
     * Calculates area
     * TODO: for concave polygon, the value doesn't right, need to fix it
     * @param points
     */
    calculateArea(points: Vector3[]): number;
    /**
     * Gets included angle of two lines in degree
     */
    calculateAngle(startPoint: Vector3, middlePoint: Vector3, endPoint: Vector3): number;
    /**
     * Gets angle bisector of two lines
     */
    getAngleBisector(startPoint: Vector3, middlePoint: Vector3, endPoint: Vector3): Vector3;
    /**
     * Get the barycenter of points
     */
    getBarycenter(points: Vector3[]): Vector3;
    /**
     * Gets unit string for distance, area or angle
     */
    getUnitString(): string;
    /**
     * Converts a number to a string with proper fraction digits
     */
    numberToString(num: number): string;
}
export default MeasuringPlugin;