Set the node's opacity filter. This can be used as a node property — an opacity mask can be passed to a node builder.
Create a value that combines the restrictions of both masks. It can be said that either of the masks acts as a "filter", hence the name.
This bitmask defines whether a node contains a point in its boundaries.
To allow this to default to InBounds.yes while being zero-initialized, each bit is inverted; i.e. 0 means *yes, in bounds* and 1 means, *no, not in bounds*.