MultiMeshFromTag.hpp

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#pragma once
 
#include <wmtk/Mesh.hpp>
 
namespace wmtk::components::internal {
 
class MultiMeshFromTag
{
public:
    MultiMeshFromTag(
        Mesh& mesh,
        const attribute::MeshAttributeHandle& tag_handle,
        const int64_t tag_value);
 
 
    Eigen::MatrixX<int64_t> get_new_id_matrix(const PrimitiveType ptype) const;
    VectorXl get_new_top_coface_vector(const PrimitiveType ptype) const;
 
    Eigen::MatrixX<int64_t> adjacency_matrix() const;
 
    std::shared_ptr<Mesh> substructure_soup() const;
 
    std::shared_ptr<Mesh> substructure() const;
 
    void compute_substructure_mesh();
 
    bool is_substructure_simplex_manifold(const simplex::Simplex& s) const;
 
    bool is_root_simplex_manifold(const simplex::Simplex& s) const;
 
    void remove_soup();
 
private:
    void compute_substructure_ids();
 
    void create_substructure_soup();
 
    std::vector<Tuple> get_connected_region(const Tuple& t, const PrimitiveType ptype);
 
    void build_adjacency_matrix();
 
private:
    Mesh& m_mesh;
 
    const attribute::Accessor<int64_t> m_tag_acc;
    const int64_t m_tag_value;
    const PrimitiveType m_tag_ptype;
 
    std::map<PrimitiveType, attribute::MeshAttributeHandle> m_new_id_handles;
 
    attribute::MeshAttributeHandle m_adjacency_handle;
    Eigen::MatrixX<int64_t> m_adjacency_matrix;
    std::map<PrimitiveType, Eigen::MatrixX<int64_t>> m_new_id_matrices;
    std::map<PrimitiveType, VectorXl> m_new_top_coface_vectors;
    std::shared_ptr<Mesh> m_soup_ptr;
    std::shared_ptr<Mesh> m_substructure_ptr;
};
 
} // namespace wmtk::components::internal