proc rect*(self: VisibilityNotifier2D): Rect2 {.
gcsafe, locks: 0
.}

proc `rect =`*(self: VisibilityNotifier2D; val: Rect2) {.
gcsafe, locks: 0
.}

proc isOnScreen*(self: VisibilityNotifier2D): bool {.
gcsafe, locks: 0
.}