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[BuiltConstraintSolver] Add SVD based regularization strategy #5722
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fredroy
merged 20 commits into
sofa-framework:master
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bakpaul:25_09_add_svd_based_regularization_strategy
Nov 18, 2025
Merged
[BuiltConstraintSolver] Add SVD based regularization strategy #5722
fredroy
merged 20 commits into
sofa-framework:master
from
bakpaul:25_09_add_svd_based_regularization_strategy
Nov 18, 2025
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…info in GenericCosntraintSolver data that are dependent on the method type. Need to find a way of setting the solving method by adding a component in the scene.
…ritance. Now the constraintProblem is only a container
… still being used
…_constraint_solver
th-skam
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Oct 20, 2025
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A few comments and suggestions for this very useful PR
.../Lagrangian/Solver/src/sofa/component/constraint/lagrangian/solver/BuiltConstraintSolver.cpp
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th-skam
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pr: based on previous PR
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pr: new feature
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Based on #5666
This PR adds a regularization strategy that uses SVD to explore the NullSpace of the matrix to only add regularization to constraints that have antagonists constraints.
meaningful commit: 30f81e4
Introduced example
The added example shows a beam attached at both sides and which center is constrained in two different positions, meaning that two antagonists constraints are imposed to the center. The idea is that, because the fixations are not faulty, then we want them to be fully solved and we don't want to perturb them while still releasing the constraints on the antagonists ones.
With SVD
Without SVD
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Reviewers will merge this pull-request only if