48 lines
1.4 KiB
JavaScript
48 lines
1.4 KiB
JavaScript
|
/*---------------------------------------------------------------------------------------------
|
||
|
|
* Copyright (c) Microsoft Corporation. All rights reserved.
|
||
|
|
* Licensed under the MIT License. See License.txt in the project root for license information.
|
||
|
|
*--------------------------------------------------------------------------------------------*/
|
||
|
|
export function clamp(value, min, max) {
|
||
|
|
return Math.min(Math.max(value, min), max);
|
||
|
|
}
|
||
|
|
export class MovingAverage {
|
||
|
|
constructor() {
|
||
|
|
this._n = 1;
|
||
|
|
this._val = 0;
|
||
|
|
}
|
||
|
|
update(value) {
|
||
|
|
this._val = this._val + (value - this._val) / this._n;
|
||
|
|
this._n += 1;
|
||
|
|
return this._val;
|
||
|
|
}
|
||
|
|
get value() {
|
||
|
|
return this._val;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
export class SlidingWindowAverage {
|
||
|
|
constructor(size) {
|
||
|
|
this._n = 0;
|
||
|
|
this._val = 0;
|
||
|
|
this._values = [];
|
||
|
|
this._index = 0;
|
||
|
|
this._sum = 0;
|
||
|
|
this._values = new Array(size);
|
||
|
|
this._values.fill(0, 0, size);
|
||
|
|
}
|
||
|
|
update(value) {
|
||
|
|
const oldValue = this._values[this._index];
|
||
|
|
this._values[this._index] = value;
|
||
|
|
this._index = (this._index + 1) % this._values.length;
|
||
|
|
this._sum -= oldValue;
|
||
|
|
this._sum += value;
|
||
|
|
if (this._n < this._values.length) {
|
||
|
|
this._n += 1;
|
||
|
|
}
|
||
|
|
this._val = this._sum / this._n;
|
||
|
|
return this._val;
|
||
|
|
}
|
||
|
|
get value() {
|
||
|
|
return this._val;
|
||
|
|
}
|
||
|
|
}
|