KOKO\Mimi
84 lines
3.1 KiB
C++
84 lines
3.1 KiB
C++
#ifndef FESA_FEM_DOF_MANAGER_H_
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#define FESA_FEM_DOF_MANAGER_H_
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#include <array>
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#include <cstddef>
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#include <cstdint>
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#include <optional>
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#include <vector>
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#include "fesa/analysis/analysis_model.h"
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#include "fesa/math/vector.h"
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namespace fesa {
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/// @brief Identifies one component in the stable six-DOF node layout.
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enum class DofComponent : std::uint8_t {
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kUx,
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kUy,
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kUz,
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kUrx,
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kUry,
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kUrz,
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};
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/// @brief Stores the stable structural CSR pattern.
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struct SparsePattern {
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std::vector<std::size_t> row_offsets;
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std::vector<std::size_t> column_indices;
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};
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/// @brief Owns full/free/constrained numbering, scatter maps, and CSR pattern.
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class DofManager {
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public:
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/// @brief Creates every equation-space mapping for an active model.
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static Result<DofManager> Create(const AnalysisModel& model);
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/// @brief Returns the full node-by-component DOF count.
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std::size_t FullDofCount() const noexcept;
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/// @brief Returns the free-equation count.
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std::size_t FreeDofCount() const noexcept;
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/// @brief Returns the prescribed-DOF count.
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std::size_t ConstrainedDofCount() const noexcept;
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/// @brief Maps a stable node index and component to a full DOF.
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std::size_t FullDof(EntityIndex node, DofComponent component) const;
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/// @brief Returns the free equation for a full DOF when unconstrained.
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std::optional<std::size_t> FreeEquation(std::size_t full_dof) const;
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/// @brief Returns a beam scatter in endpoint/component order.
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const std::array<std::size_t, 12>& ElementScatter(EntityIndex element) const;
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/// @brief Returns a shell scatter in node/component order.
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const std::array<std::size_t, 24>& ShellElementScatter(
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EntityIndex element) const;
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/// @brief Returns free full DOFs in stable increasing order.
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const std::vector<std::size_t>& FreeDofs() const noexcept;
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/// @brief Returns constrained full DOFs in stable increasing order.
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const std::vector<std::size_t>& ConstrainedDofs() const noexcept;
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/// @brief Returns dc in constrained-DOF order.
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const Vector& PrescribedValues() const noexcept;
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/// @brief Returns the full-space structural CSR pattern.
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const SparsePattern& GetSparsePattern() const noexcept;
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private:
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/// @brief Takes ownership of fully validated stable equation mappings.
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DofManager(std::size_t full_dof_count,
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std::vector<std::optional<std::size_t>> free_equations,
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std::vector<std::array<std::size_t, 12>> element_scatters,
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std::vector<std::array<std::size_t, 24>> shell_element_scatters,
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std::vector<std::size_t> free_dofs,
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std::vector<std::size_t> constrained_dofs,
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Vector prescribed_values, SparsePattern sparse_pattern);
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std::size_t full_dof_count_;
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std::vector<std::optional<std::size_t>> free_equations_;
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std::vector<std::array<std::size_t, 12>> element_scatters_;
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std::vector<std::array<std::size_t, 24>> shell_element_scatters_;
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std::vector<std::size_t> free_dofs_;
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std::vector<std::size_t> constrained_dofs_;
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Vector prescribed_values_;
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SparsePattern sparse_pattern_;
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};
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} // namespace fesa
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#endif // FESA_FEM_DOF_MANAGER_H_
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