Detect camera Moves in Nova script

Just a small tip to detect camera moves on a scene with Nova script. We may think that PropertyChanged event on NovaCamera can do it, but not...
Indeed for rendering performance reasons, it's not possible to track every properties changes on NovaCamera (see wiki). So here it is a little script to track camera moves on a Nova scene.
The tip is quite simple: at the scene creation, we store initial coordinates and on every rendering we check current coordinates with the previous one (since we work on floating real, we calculate the daifference according an epsilon). After the calcultation, if there is a difference, the camera moved. Since this check is done on every rendering (ie: 30 fps), the result of differential remains true during this time. We can work on the epsilon value to reduce somewhat the sensitivity, but to reduce it further, it should be considered a lapse of time during which the audit should not take place (using a stopwath as an example).
Here is the code Code:

  Private myScene As NovaScene
    Private epsilon As Single = 0.0001
    Private cameraLastGlobalPosition As Vector3
    Private cameraLastRotationPosition As Vector3
    Private camera As NovaCamera
    
    Public Sub New(ByVal scene As NovaScene)
        myScene = scene
        
        camera = myScene.GetCamera("MainCamera")
        StoreCameraPostion()

        AddHandler myScene.AfterRender, AddressOf manageAfterRender
    End Sub

    Private Sub manageAfterRender
        If Math.Abs(CType((camera.GlobalPosition - cameraLastGlobalPosition).Length, Single)) 
> epsilon OrElse Math.Abs(CType((camera.Rotation - cameraLastRotationPosition).Length, Single)) 
> epsilon Then    
            StoreCameraPostion()
            
            PluginHelper.LogInfo("it moves!")
        End If
    End Sub

    Public Sub StoreCameraPostion()
        cameraLastGlobalPosition = camera.GlobalPosition
        cameraLastRotationPosition = camera.Rotation 
    End Sub

    Protected Overrides Sub Finalize()
        RemoveHandler myScene.AfterRender, AddressOf ManageAfterRender
    End Sub
End Class