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    Class UserPointersTracker

    Keeps track of keyed values of type V (eg Point). It stores occurences in type T, which must extend from TrackerBase<V>, eg PointTracker.

    The creator function passed in to the constructor is responsible for instantiating the appropriate TrackerBase sub-class.

    export class PointsTracker extends TrackedValueMap<Points.Point> {
     constructor(opts:TrackOpts = {}) {
      super((key, start) => {
       if (start === undefined) throw new Error(`Requires start point`);
       const p = new PointTracker(key, opts);
       p.seen(start);
       return p;
      });
     }
    }

    Hierarchy (View Summary)

    Index

    Accessors

    size

    Constructors

    constructor

    Methods

    delete get getTrackedValue has ids initialValues last reset seen seenEvent tracked trackedByAge valuesByAge

    Properties

    gog store

    Accessors

    Constructors

    Methods

    • Enumerate last received values

      Returns Generator<undefined | Point, void, unknown>

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

    • 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>

    Properties

    gog: Maps.GetOrGenerateSync<string, PointTracker<Point>, Point>
    store: Map<string, PointTracker<Point>>

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