LinkSingleDimensionIterable.hpp

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#pragma once
 
#include <queue>
 
#include <wmtk/Mesh.hpp>
#include <wmtk/simplex/IdSimplex.hpp>
#include <wmtk/simplex/Simplex.hpp>
#include <wmtk/simplex/SimplexCollection.hpp>
#include <wmtk/simplex/internal/VisitedArray.hpp>
 
#include "TopDimensionCofacesIterable.hpp"
 
namespace wmtk::simplex {
 
class LinkSingleDimensionIterable
{
public:
    class Iterator
    {
    public:
        Iterator(LinkSingleDimensionIterable& container, const Tuple& t = Tuple());
        Iterator& operator++();
        bool operator!=(const Iterator& other) const;
        Tuple& operator*();
        const Tuple& operator*() const;
 
    private:
        int64_t depth();
        bool is_link_d1();
 
        void init();
 
        Iterator& step_depth_3();
 
        Tuple navigate_to_link(Tuple t);
 
    private:
        LinkSingleDimensionIterable& m_container;
        TopDimensionCofacesIterable::Iterator m_it;
        Tuple m_t;
        int8_t m_edge_counter = 0;
    };
 
public:
    LinkSingleDimensionIterable(
        const Mesh& mesh,
        const Simplex& simplex,
        const PrimitiveType cofaces_type);
 
    Iterator begin() { return Iterator(*this, m_simplex.tuple()); }
    Iterator end() { return Iterator(*this); }
 
private:
    const Mesh& m_mesh;
    const Simplex m_simplex;
    const PrimitiveType m_link_type;
    TopDimensionCofacesIterable m_tdc_itrbl;
    TopDimensionCofacesIterable::Iterator m_it_end;
 
    simplex::internal::VisitedArray<simplex::IdSimplex> m_visited_link; // for depth 3 iteration
};
 
} // namespace wmtk::simplex