Synchronise Multiple Charts

1export class RandomWalkGenerator {
2    private readonly bias: number;
3    private last: number;
4    private i: number;
5    private _seed: number;
6    constructor(bias: number = 0.01) {
7        this.bias = bias;
8        this.reset();
9    }
10
11    public Seed(seed: number) {
12        this._seed = seed % 2147483647;
13        if (this._seed <= 0) this._seed += 2147483646;
14        return this;
15    }
16
17    public reset() {
18        this.i = 0;
19        this.last = 0;
20    }
21
22    public getRandomWalkSeries(count: number): { xValues: number[]; yValues: number[] } {
23        const xValues: number[] = [];
24        const yValues: number[] = [];
25        const random = () => (this._seed === undefined ? Math.random() : (this.nextSeeded() - 1) / 2147483646);
26        for (let i = 0; i < count; i++) {
27            const next: number = this.last + (random() - 0.5 + this.bias);
28            xValues.push(this.i++);
29            yValues.push(next);
30            this.last = next;
31        }
32
33        return { xValues, yValues };
34    }
35
36    private nextSeeded() {
37        return (this._seed = (this._seed * 16807) % 2147483647);
38    }
39}
40