@polygonjs/polygonjs/dist/src/engine/viewers/utils/ViewerPerformanceMonitor.js

node-based WebGL 3D engine https://polygonjs.com

"use strict";
import { DESIRED_FPS } from "../../scene/utils/TimeController";
function _round(perf) {
  return Math.round(perf * 10);
}
export class ViewerPerformanceMonitor {
  constructor(viewer) {
    this.viewer = viewer;
    this._accumulatedDelta = 0;
    this._framesCount = 0;
    this._lastRoundedPerf = _round(1);
  }
  measurePerformance(delta) {
    this._accumulatedDelta += delta;
    if (this._accumulatedDelta >= 1) {
      const perf = this._framesCount / DESIRED_FPS;
      const roundedPerf = _round(perf);
      if (roundedPerf != this._lastRoundedPerf) {
        this._lastRoundedPerf = roundedPerf;
        this.viewer.scene().perfMonitor.onPerformanceChange(perf);
      }
      this._framesCount = 0;
      this._accumulatedDelta = 0;
    }
    this._framesCount++;
  }
}