Expose pseudo-force interface using pybind11 [WIP]

[The9Cat]

New pseudo-force features

Work so far:

1. Wrapped setNonInertial and setNonInertialAccel for setting and requesting evaluation of a pseudoforce
2. Simplified the call structure of setNonInertial. There are two variants: (1) passing a times and centers as arrays; and (2) passing an EXP Orient file.
3. I added a boolean member function to Basis::usingNonIntertial() to tell client classes whether to use inertial or expansion frame coordinates.

Comments

Code compiles but none of this has been tested.

[The9Cat]

Added a new test of inertial vs non-inertial here. It's close but far enough that we'll have to dig in deeper, alas. But at least we have a framework for testing now.

[The9Cat]

A quick look suggests that the pseudo-force computation is fairly close to what it should be. But the difference remains too large.

[michael-petersen]

Confirming here that for a start I can a) compile, and b) get the same results as in EXP-code/pyEXP-examples#15 for both MovingFrames.ipynb and OrbitingFrame.ipynb.

[Copilot]

Pull Request Overview

This PR exposes a pseudo-force interface to Python via pybind11 and adds non-inertial frame support in the basis evaluation routines while simplifying the call structure of setNonInertial. Key changes include:

• Changing readwrite bindings to readonly for coefficient time and center values plus adding explicit accessor and setter functions.
• Introducing new functions for non-inertial operations (setNonInertial, setNonInertialAccel, setInertial) in both Python and C++ wrappers.
• Updating several coefficient caching and interpolation routines with minor logic tweaks and enhanced error checks.

Reviewed Changes

Copilot reviewed 6 out of 7 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
pyEXP/CoefWrappers.cc	Updated binding definitions and added new accessor setter methods.
pyEXP/BasisWrappers.cc	Added non-inertial/inertial interface and overloads for setNonInertial.
expui/CoefStruct.H	Initialized center vector and added accessor methods.
expui/BiorthBasis.cc	Cached coefficient structures and adjusted interpolation logic.
expui/BasisFactory.cc	Revised setNonInertial parameters and added sanity checking.
expui/BasisFactory.H	Introduced new helper functions for non-inertial mode management.

Files not reviewed (1)

• CMakeLists.txt: Language not supported

[michael-petersen]

All code works as expected for me, particularly with the MWE in pyEXP-examples.

[The9Cat]

Cool. I might have done this with a std::regex but this works.

[The9Cat]

Is there an obvious work around for earlier version? E.g. will "Version" in dir(pyEXP.util) work?

[michael-petersen]

For reference: the template for version checking can be found in the associated pyEXP-examples PR -- this can be used in other notebooks as features are added.