How do I prevent labeling outside of the current atlas feature polygon?

Question

I want to create an atlas which is based on region polygons. I use inverted polygons and rule based styles (inverted polygons) for the polygon layer with the rule $id = @atlas_featureid which works fine. I have also a point layer and the features of the point layer are not shown due to the inverted polygons but their labels are shown. I want to prevent the labels outside of the current atlas feature polygon. Which expression should I use for the rule-based-labeling? I found this post (Filtering out labels surrounding active feature in Atlas) and tried the suggested rule-based filtering expressions but it didn't work for me.

Answer 1

Via data defined override:

Go to "Labels" --> "Rendering" --> "Show label" --> "Data defined override" of your point-layer and insert intersects($geometry,@atlas_geometry) as expression as shown below:

Or via Rule Based Labeling:

Go to "Labels" --> "Rule-Based Labeling" of your point-layer and set up one rule with an expression like this: intersects($geometry,@atlas_geometry)

Both will lead to this label-behavior in print layout: