Class TrackedPointMap

gog

store

size

• get size(): number

• Number of named values being tracked

  Returns number

delete

• delete(id): void

• Remove a tracked value by id. Use reset to clear them all.

  Parameters

  • id: string

  Returns void

get

• get(id): undefined | TrackerBase<Point, Readonly<{
      fromInitial: PointRelationResult;
      fromLast: PointRelationResult;
      fromMark: undefined | PointRelationResult;
      values: readonly Point[];
  }>>

• Returns a tracked value by id, or undefined if not found

  Parameters

  • id: string

  Returns undefined | TrackerBase<Point, Readonly<{
      fromInitial: PointRelationResult;
      fromLast: PointRelationResult;
      fromMark: undefined | PointRelationResult;
      values: readonly Point[];
  }>>

has

• has(id): boolean

• Returns true if id is stored

  Parameters

  • id: string

  Returns boolean

ids

• ids(): Generator<string, void, undefined>

• Enumerate ids

  Returns Generator<string, void, undefined>

initialValues

• initialValues(): Generator<undefined | Point, void, unknown>

• Enumerate starting values

  Returns Generator<undefined | Point, void, unknown>

last

• last(): Generator<undefined | Point, void, unknown>

• Enumerate last received values

  Returns Generator<undefined | Point, void, unknown>

  Example: Calculate centroid of latest-received values

  const pointers = pointTracker();
  const c = Points.centroid(...Array.from(pointers.lastPoints()));
  Copy

reset

• reset(): void

• Remove all tracked values. Use delete to remove a single value by id.

  Returns void

seen

• seen(id, ...values): Promise<Readonly<{
      fromInitial: PointRelationResult;
      fromLast: PointRelationResult;
      fromMark: undefined | PointRelationResult;
      values: readonly Point[];
  }>>

• For a given id, note that we have seen one or more values.

  Parameters

  • id: string

    Id
  • Rest...values: Point[]

    Values(s)

  Returns Promise<Readonly<{
      fromInitial: PointRelationResult;
      fromLast: PointRelationResult;
      fromMark: undefined | PointRelationResult;
      values: readonly Point[];
  }>>

  Information about start to last value

tracked

• tracked(): Generator<PointTracker, void, undefined>

• Enumerate tracked values

  Returns Generator<PointTracker, void, undefined>

trackedByAge

• trackedByAge(): Generator<PointTracker, void, unknown>

• Iterates TrackedValues ordered with oldest first

  Returns Generator<PointTracker, void, unknown>

valuesByAge

• valuesByAge(): Generator<undefined | Point, void, unknown>

• Iterates underlying values, ordered by age (oldest first) First the named values are sorted by their elapsed value, and then we return the last value for that group.

  Returns Generator<undefined | Point, void, unknown>