How to use EB to model complex obstacles in 2D calculations

[MaybeBin]

When modeling obstacles using EB_CNS, I can successfully import STL files for 3D calculations to handle complex geometries, this approach seems to fail for 2D cases. (I try to change the DIM parameter to 2 in the example provided here). I am unsure if I made an error in my implementation.
What methods can I use to model complex geometries in 2D (similar to the image below, just an example)? Is it necessary to rely solely on the geometric combinations of basic shapes as described in the documentation here, or are there other more efficient ways to import external structures? Thank you for your assistance!

[WeiqunZhang]

We do not support STL in 2D. STL is a format for 3D objects. So I am not sure what it would mean in 2D. Projection of the 3D objection onto a plane? A 2D cut?

[MaybeBin]

Thank you for your response : ). I sorry for any confusion in my previous message. What I meant to ask is whether it is possible to assist in constructing a 2D model by reading external files, similar to how it is done in 3D modeling. Or are we limited to using the basic shapes provided by AMReX for combinations and transformations? When it comes to irregular 2D shapes (such as curves), it seems that using this method would make precise modeling quite challenging.