refactor!: Remove MagneticFieldProvider::getFieldGradient
#3983
Conversation
## Walkthrough
In this pull request, the Acts library undergoes a systematic removal of the `getFieldGradient` method across multiple magnetic field classes. The changes span several files in the Core, Plugins, and Examples directories, focusing on simplifying the magnetic field provider interfaces. The modifications primarily involve eliminating an unimplemented method that was intended to calculate magnetic field gradients but was not fully developed.
## Changes
| File | Change Summary |
|------|----------------|
| `Core/include/Acts/MagneticField/*.hpp` | Removed `getFieldGradient` method from `ConstantBField`, `InterpolatedBFieldMap`, `MagneticFieldProvider`, `MultiRangeBField`, `NullBField`, `SolenoidBField` |
| `Plugins/DD4hep/include/Acts/Plugins/DD4hep/DD4hepFieldAdapter.hpp` | Removed `getFieldGradient` method |
| `Examples/Detectors/MagneticField/include/ActsExamples/MagneticField/ScalableBField.hpp` | Removed `getFieldGradient` method |
| `Tests/UnitTests/Core/MagneticField/InterpolatedBFieldMapTests.cpp` | Removed related test checks for gradient |
## Possibly related PRs
- **#3927**: Removal of `getFieldGradient` method from multiple classes.
- **#3982**: Cleanup of `InterpolatedBFieldMap` class.
## Suggested labels
`automerge`, `Vertexing`
## Suggested reviewers
- paulgessinger
## Poem
> Magnetic fields, once complex and grand,
> Gradients vanish like sand through hand.
> Simplicity calls, methods fade away,
> Code becomes clearer with each passing day.
> 🧲✨ Farewell, unused gradient, be free!📜 Recent review detailsConfiguration used: CodeRabbit UI 📒 Files selected for processing (3)
💤 Files with no reviewable changes (2)
🚧 Files skipped from review as they are similar to previous changes (1)
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Component - Core
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alternatively we could drop this function as it is not used anywhere |
andiwand
changed the title
MagneticFieldProvider::getFieldGradient
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@andiwand I'm wondering if dropping might be the better idea for now. |
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Actionable comments posted: 0
🔭 Outside diff range comments (1)
Core/src/MagneticField/SolenoidBField.cpp (1)
Incomplete test coverage for mathematical formulas, I sense. Hmmmm.
Missing, crucial test cases are:
- Validation of k2 function behavior, there must be
- Mathematical accuracy against known solutions, we need
- Tests for extreme values of z and r, essential they are
- Edge case r = 0, though handled in code, explicit tests require we do
🔗 Analysis chain
Line range hint
89-156: Test the mathematical implementation thoroughly, we must.Complex mathematical formulas, these functions contain. Yet, unit tests for edge cases, I see not.
Run this script to check for existing tests:
Consider adding tests for:
- Edge case r = 0
- Large z values
- Various combinations of r and z
Help you write comprehensive test cases, shall I?
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Search for test cases covering mathematical edge cases rg -l "SolenoidBField.*test" rg "B_r|B_z|k2.*test"Length of output: 7234
Script:
#!/bin/bash # Extract test ranges and specific test cases echo "=== Test Ranges and Cases ===" rg "for.*r.*=|for.*z.*=" Tests/UnitTests/Core/MagneticField/SolenoidBFieldTests.cpp -A 2 echo -e "\n=== Edge Case Tests ===" rg "r.*=.*0|z.*=.*0" Tests/UnitTests/Core/MagneticField/SolenoidBFieldTests.cpp echo -e "\n=== k2 Function Tests ===" rg "k2.*test|CHECK.*k2" Tests/UnitTests/Core/MagneticField/SolenoidBFieldTests.cppLength of output: 1380
🧹 Nitpick comments (3)
Core/include/Acts/MagneticField/NullBField.hpp (1)
36-36: Elegant simplification, achieved you have!Direct return of Zero vector, more efficient it is. Removed the need for member variable, you have. Strong with the Force, this change is.
Consider marking method as [[nodiscard]] you should:
- Result<Vector3> getField(const Vector3& position, + [[nodiscard]] Result<Vector3> getField(const Vector3& position,Core/include/Acts/MagneticField/MultiRangeBField.hpp (1)
Line range hint
1-60: Complete removal of getFieldGradient, consider we must!Unused in the codebase, this function remains. If no plans for gradient calculations exist, remove all traces of it, we should. Create new PR for this purpose, you could.
Create GitHub issue for complete removal, shall I? Track remaining references and ensure clean deletion, we must.
Core/src/MagneticField/MultiRangeBField.cpp (1)
Line range hint
32-67: Document the caching mechanism better, we should.Complex, this caching mechanism is. Help future Padawans understand it better, additional documentation would. Consider adding:
- Performance characteristics
- Cache invalidation scenarios
- Example of cache hit/miss scenarios
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📒 Files selected for processing (12)
Core/include/Acts/MagneticField/ConstantBField.hpp(0 hunks)Core/include/Acts/MagneticField/InterpolatedBFieldMap.hpp(0 hunks)Core/include/Acts/MagneticField/MagneticFieldProvider.hpp(1 hunks)Core/include/Acts/MagneticField/MultiRangeBField.hpp(2 hunks)Core/include/Acts/MagneticField/NullBField.hpp(1 hunks)Core/include/Acts/MagneticField/SolenoidBField.hpp(0 hunks)Core/src/MagneticField/MultiRangeBField.cpp(1 hunks)Core/src/MagneticField/SolenoidBField.cpp(1 hunks)Examples/Detectors/MagneticField/include/ActsExamples/MagneticField/ScalableBField.hpp(1 hunks)Plugins/DD4hep/include/Acts/Plugins/DD4hep/DD4hepFieldAdapter.hpp(1 hunks)Plugins/DD4hep/src/DD4hepFieldAdapter.cpp(0 hunks)Tests/UnitTests/Core/MagneticField/InterpolatedBFieldMapTests.cpp(0 hunks)
💤 Files with no reviewable changes (5)
- Plugins/DD4hep/src/DD4hepFieldAdapter.cpp
- Core/include/Acts/MagneticField/SolenoidBField.hpp
- Tests/UnitTests/Core/MagneticField/InterpolatedBFieldMapTests.cpp
- Core/include/Acts/MagneticField/ConstantBField.hpp
- Core/include/Acts/MagneticField/InterpolatedBFieldMap.hpp
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🔇 Additional comments (7)
Plugins/DD4hep/include/Acts/Plugins/DD4hep/DD4hepFieldAdapter.hpp (1)
11-11: Approve, I do, the addition of Algebra header!Necessary for Vector3 usage, this inclusion is. Clean and proper, the dependency management appears.
Core/include/Acts/MagneticField/MagneticFieldProvider.hpp (1)
45-45: Simplified the destructor has become, hmmmm!Wise choice it is, to use default destructor. Virtual remains it does, protecting derived classes still. Clean and efficient, the way of the Force this is.
Run this command to ensure no custom destructors in derived classes rely on this:
✅ Verification successful
Safe the default destructor is, hmmmm! Verified this change has been.
All derived classes, using default destructors they are. No custom cleanup needed, the Force is balanced. Final classes, most of them are - wisdom in design, this shows.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Search for custom destructors in magnetic field providers rg "~\w+BField\b.*\{" --type cppLength of output: 34
Script:
#!/bin/bash # Search for classes inheriting from MagneticFieldProvider ast-grep --pattern 'class $_ : $$$MagneticFieldProvider$$$' # Also search for potential destructors with different naming patterns rg "~\w+(?:Field|Map|Provider)\b.*\{" --type cpp -A 2Length of output: 117
Script:
#!/bin/bash # Search for virtual destructors in Acts headers fd '\.hpp$' Core/include/Acts | xargs rg "virtual\s+~.*\{" -A 2 # Also search for class declarations with MagneticFieldProvider fd '\.hpp$' Core/include/Acts | xargs rg "class.*MagneticFieldProvider" -A 5Length of output: 3362
Core/include/Acts/MagneticField/MultiRangeBField.hpp (1)
10-14: Balanced the Force is, in these header changes!Removed MagneticFieldError.hpp, added Algebra.hpp you have. Clean dependencies, maintain we must.
Verify the header dependencies, we should:
✅ Verification successful
Correct these header changes are, hmmmm!
In balance with the Force, these modifications stand:
- MagneticFieldError.hpp, to implementation file moved it was, where it belongs
- Algebra.hpp, required it is, for Vector3 in public interface
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Check if MagneticFieldError.hpp is still needed rg "MagneticFieldError" --type cpp # Verify Vector3 usage requiring Algebra.hpp rg "Vector3" "Core/include/Acts/MagneticField/MultiRangeBField.hpp"Length of output: 2181
Core/src/MagneticField/MultiRangeBField.cpp (1)
11-11: Proper error handling, you have added! Hmmmm.A wise addition this include is, enabling proper error reporting when field bounds are exceeded.
Examples/Detectors/MagneticField/include/ActsExamples/MagneticField/ScalableBField.hpp (1)
90-90: Clean and focused, this interface has become.Removed the unused gradient functionality, we have. Simpler and more maintainable, the code now is.
Core/src/MagneticField/SolenoidBField.cpp (2)
11-11: Proper error handling, added you have.Wise decision to include error handling capabilities, this is.
Line range hint
1-1: Verify unused status of removed functionality, we must.Removed getFieldGradient has been, but verify its unused status throughout the codebase, we should.
Run this script to confirm no remaining usage:
✅ Verification successful
Confirmed, the removal of getFieldGradient is, hmm!
Through the Force, searched the entire codebase we have. No remaining traces of the field gradient functionality exist. Other gradient functions, different purposes they serve - material gradients and color gradients, separate paths they follow.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Search for any remaining references to getFieldGradient rg "getFieldGradient" # Search for potential method calls that might have used this functionality ast-grep --pattern 'getFieldGradient($$$)'Length of output: 66
Script:
#!/bin/bash # Search with case variations and partial matches rg -i "field.*gradient" rg -i "gradient.*field" # Search specifically in header files fd -e h -e hpp -x rg -i "gradient" {} # Look for potential field gradient calculations ast-grep --pattern 'gradient($$$)' ast-grep --pattern 'field($$$gradient$$$)'Length of output: 614
…field-return-grad
andiwand
changed the title
MagneticFieldProvider::getFieldGradientMagneticFieldProvider::getFieldGradient
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acts-project-service
added
the
Breaks Athena build
andiwand
added
automerge
and removed
Breaks Athena build
Remove
MagneticFieldProvider::getFieldGradientafter discussions as it is not used anywhere.previously:
Result<std::pair<Vector3, SquareMatrix3>>instead ofResult<Vector3>pulled out of #3951
Summary by CodeRabbit
Release Notes
Refactor
getFieldGradientmethod from multiple magnetic field classes, streamlining their interfaces.MagneticFieldProviderfor simplification.Chores
The changes primarily focus on enhancing the clarity and usability of the magnetic field-related code by eliminating incomplete functionality.