Android Question Cut out shapes from canvas

Dim circle As Path
   circle.Initialize(ImageSize/2, ImageSize/2)
   
   Dim radius As Float = ImageSize/2
   PathAddCircle(circle, ImageSize/2, ImageSize/2, radius)
   Dim fullScreen As Path
   fullScreen.Initialize(0, 0)
   fullScreen.LineTo(ImageSize, 0)
   fullScreen.LineTo(ImageSize, ImageSize)
   fullScreen.LineTo(0, ImageSize)
   Dim p As Path = OpPath(fullScreen, circle, "DIFFERENCE")
   cvsCircle.ClipPath(p)
   
   Dim dest As Rect
   dest.Initialize(0, 0, ImageSize, ImageSize)
   cvsCircle.DrawColor(Colors.Transparent)

End Sub


Sub OpPath(p1 As Path, p2 As Path, Op As String) As Path
   Dim jo As JavaObject = p1
   Dim success As Boolean = jo.RunMethod("op", Array(p2, Op))
   Log($"Success: ${success}"$)
   Return p1
End Sub

Sub PathAddCircle(path As Path, x As Float, y As Float, radius As Float)
   Dim jo As JavaObject = path
   jo.RunMethod("addCircle", Array(x, y, radius, "CW"))
End Sub