Powershell FPS Counter class

FPS.ps1

class FPSCounter {
    [int]$FrameCount = 0
    [System.Diagnostics.Stopwatch]$Stopwatch
    [double]$LastTime = 0
    [double]$FPS = 0

    FPSCounter() {
        $this.Stopwatch = [System.Diagnostics.Stopwatch]::new()
        $this.Stopwatch.Start()
        $this.LastTime = 0
    }

    [double] Update() {
        $this.FrameCount++

        $currentTime = $this.Stopwatch.Elapsed.TotalSeconds
        $elapsed = $currentTime - $this.LastTime

        if ($elapsed -ge 1.0) {
            $this.FPS = [Math]::Round($this.FrameCount / $elapsed, 2)
            $this.FrameCount = 0
            $this.LastTime = $currentTime
        }

        return $this.FPS
    }
}