CoordinateTracker <Tracked3D>

CoordinateTracker contains methods for tracking a screen space coordinate from a 3D position.

Index

Constructors

• constructor

Properties

• onUpdateObservable

Accessors

• size

Methods

• clear
• dispose
• entries
• forceRecalculation
• get
• onUpdate
• track
• trackOnce
• untrack

Constructors

constructor

• new CoordinateTracker<Tracked3D>(bimApi: BimCoreApi, recalculate2DEachFrame?: boolean): CoordinateTracker<Tracked3D>

• Constructor

  ---

  Type parameters

  • Tracked3D: TrackCoordinate3D = Vertex3

  Parameters

  • bimApi: BimCoreApi

    BIM Core API.

  • recalculate2DEachFrame: boolean = false

    If true then it updates the 2D positions for each tracked 3D coordinate at the end of each frame.

  Returns CoordinateTracker<Tracked3D>

Properties

publicreadonlyonUpdateObservable

onUpdateObservable: Observable<TrackCoordinate2D<Tracked3D>> = ...

Called when a tracked 3D coordinate changes its 2D position (when camera is manipulated). Same as onUpdate but using a Observable instead.

Accessors

publicsize

• get size(): number

• Number of items currently being tracked.

  ---

  Returns number

Methods

publicclear

• clear(): void

• Removes all tracked coordinates from the tracker.

  ---

  Returns void

publicdispose

• dispose(): void

• Disposes the coordinate tracker.

  ---

  Returns void

publicentries

• entries(): IterableIterator<[unknown, Tracked3D], any, any>

• Allows iteration of all entities that are tracked (and their ids)

  ---

  Returns IterableIterator<[unknown, Tracked3D], any, any>

  collection of all tracked entities and their id.

publicforceRecalculation

• forceRecalculation(): void

• Immediately force a recalculation of all 2D coordinates

  ---

  Returns void

publicget

• get(id: unknown): undefined | TrackCoordinate2D<Tracked3D>

• Attempt to get a currently tracked object by id.

  ---

  Parameters

  • id: unknown

    Id of tracked object.

  Returns undefined | TrackCoordinate2D<Tracked3D>

  Tracked object if it exists. Otherwise undefined

publiconUpdate

• onUpdate(callback: (coordinate: TrackCoordinate2D<Tracked3D>) => void): void

• Register a callback which will be called when the active camera moves. It is called once for each coordinate registered by track.

  ---

  Parameters

  • callback: (coordinate: TrackCoordinate2D<Tracked3D>) => void

    Callback to trigger when an active camera moves.

  Returns void

publictrack

• track(coordinate: Tracked3D, id?: unknown): unknown

• This method takes a coordinate in 3D to track screen space position when the camera moves. When method is called notifyObservers and _callback are immediately raised for the passed coordinate. Same coordinate can be passed multiple times (with same id) but it will only be added once. However notifyObservers and _callback will still be immediately raised and report 2D coordinates data even if coordinate is already tracked.

  ---

  Parameters

  • coordinate: Tracked3D

    Coordinate to track.

  • optionalid: unknown

    Optional. If not specified an id will be generated

  Returns unknown

  id of tracked coordinate.

publictrackOnce

• trackOnce(coordinate: Tracked3D, id: unknown): undefined | TrackCoordinate2D<Tracked3D>

• Gets 2D coordinate of a 3D coordinate once.

  ---

  Parameters

  • coordinate: Tracked3D

    3D coordinate to get 2D coordinate from

  • id: unknown

    Identifier for 3D coordinate.

  Returns undefined | TrackCoordinate2D<Tracked3D>

publicuntrack

• untrack(id: unknown): undefined | Tracked3D

• Stops tracking of a 3D coordinate.

  ---

  Parameters

  • id: unknown

    Id of 3D coordinate to stop tracking

  Returns undefined | Tracked3D

  Object that was untracked. If there is no such object then undefined.