Modeling - Optimize BndLib and add GTests

[dpasukhi]

Bug fixes:

• Fix negative modulo in torus bounding box computation
• Fix hyperbola extrema loop early break condition
• Fix OpenMin/OpenMax direction sign for infinite bounds
• Remove dead code in cone bounding computation

Optimizations:

• Replace sqrt/log with more efficient computations in hyperbola bounds
• General code cleanup and modernization

Testing:

• Add comprehensive GTest suite (61 tests) covering BndLib, BndLib_Add2dCurve, BndLib_Add3dCurve, and BndLib_AddSurface

[Copilot]

Pull request overview

This PR optimizes the BndLib (bounding box library) module by fixing bugs, improving performance, and adding comprehensive test coverage. Key fixes include correcting negative modulo handling in torus computation, fixing hyperbola extrema loop logic, and resolving infinite bound direction signs. Performance improvements include replacing expensive sqrt/log operations and adding loop precomputation. The PR adds 61 GTests covering all major functionality.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
BndLib_Test.cxx	New comprehensive test suite with 61 tests covering BndLib core functionality, 2D/3D curves, and surfaces
FILES.cmake	Registers new test file in build system
BndLib.cxx	Core optimizations: replaces macros with modern C++, fixes infinite bound direction logic, optimizes torus/hyperbola computation, fixes negative modulo bug
BndLib_Add3dCurve.cxx	Optimizes pole-based box reduction with structured bindings and modern C++ idioms, converts static to constexpr
BndLib_Add2dCurve.cxx	Performance improvements: replaces C math functions with std:: equivalents, improves type safety with static_cast
BndLib_AddSurface.cxx	Loop optimization: precomputes step sizes to eliminate repeated division, modernizes assignment operator

[dpasukhi]

Test i will fix after review, it is just one of the value now is 1e-2 different