feat(cpp-object-oriented-modular-refactoring): step 5 - solver-workflow-google-style

2026-08-16 06:20:08 +09:00
parent e1c0e357dd
commit 24f006fe4a
52 changed files with 5817 additions and 6369 deletions
@@ -0,0 +1,41 @@
+#ifndef FESA_CONSTRAINTS_ESSENTIAL_CONSTRAINTS_H_
+#define FESA_CONSTRAINTS_ESSENTIAL_CONSTRAINTS_H_
+
+#include "fesa/core/status.h"
+#include "fesa/math/sparse_matrix.h"
+#include "fesa/math/vector.h"
+
+namespace fesa {
+
+class DofManager;
+
+/// @brief Stores full-stiffness blocks in stable free/constrained order.
+struct PartitionedStiffness {
+  SparseMatrix kff;
+  SparseMatrix kfc;
+  SparseMatrix kcf;
+  SparseMatrix kcc;
+};
+
+/// @brief Applies stable prescribed-displacement elimination.
+class EssentialConstraints {
+ public:
+  /// @brief Partitions full stiffness into Kff, Kfc, Kcf, and Kcc.
+  static Result<PartitionedStiffness> Partition(const SparseMatrix& full,
+                                                const DofManager& dofs);
+
+  /// @brief Gathers a full vector in stable free-equation order.
+  static Vector GatherFree(const Vector& full, const DofManager& dofs);
+
+  /// @brief Gathers a full vector in stable constrained-DOF order.
+  static Vector GatherConstrained(const Vector& full, const DofManager& dofs);
+
+  /// @brief Reconstructs full d from stable df and exact prescribed dc.
+  static Vector ReconstructFull(const Vector& free_values,
+                                const Vector& constrained_values,
+                                const DofManager& dofs);
+};
+
+}  // namespace fesa
+
+#endif  // FESA_CONSTRAINTS_ESSENTIAL_CONSTRAINTS_H_