💿🐜 Antkeeper source code
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126 lines
3.0 KiB
126 lines
3.0 KiB
/*
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* Copyright (C) 2023 Christopher J. Howard
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*
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* This file is part of Antkeeper source code.
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*
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* Antkeeper source code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Antkeeper source code is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Antkeeper source code. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef ANTKEEPER_GEOM_BREP_LOOP_HPP
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#define ANTKEEPER_GEOM_BREP_LOOP_HPP
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#include <engine/geom/brep/brep-element-container.hpp>
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#include <cstddef>
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namespace geom {
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class brep_vertex;
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class brep_edge;
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class brep_face;
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template <class T>
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class brep_element_container;
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/**
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* Connected boundary of a single face.
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*/
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class brep_loop
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{
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public:
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friend class brep_mesh;
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friend class brep_edge_loop_list;
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friend class brep_face_loop_list;
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friend class brep_element_container<brep_loop>;
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friend class brep_loop_container;
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friend class brep_face_container;
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/**
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* Returns the index of this loop in the mesh loop array.
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*
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* @warning This index may change if any loops are removed from the mesh.
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*/
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[[nodiscard]] inline constexpr std::size_t index() const noexcept
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{
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return m_index;
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}
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/// Returns a pointer to the loop vertex.
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[[nodiscard]] inline constexpr brep_vertex* vertex() const noexcept
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{
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return m_vertex;
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}
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/// Returns a pointer to the loop edge.
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[[nodiscard]] inline constexpr brep_edge* edge() const noexcept
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{
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return m_edge;
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}
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/// Returns a pointer to the loop face.
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[[nodiscard]] inline constexpr brep_face* face() const noexcept
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{
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return m_face;
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}
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/// Returns a pointer to the next loop.
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[[nodiscard]] inline constexpr brep_loop* next() const noexcept
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{
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return m_face_next;
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}
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/// Returns a pointer to the previous loop.
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[[nodiscard]] inline constexpr brep_loop* previous() const noexcept
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{
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return m_face_previous;
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}
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private:
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std::size_t m_index;
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brep_vertex* m_vertex;
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brep_edge* m_edge;
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brep_face* m_face;
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brep_loop* m_edge_next;
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brep_loop* m_edge_previous;
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brep_loop* m_face_next;
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brep_loop* m_face_previous;
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};
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/**
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* B-rep loop container.
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*/
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class brep_loop_container: public brep_element_container<brep_loop>
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{
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private:
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friend class brep_mesh;
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friend class brep_face_container;
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/**
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* Constructs a B-rep face container.
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*
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* @param mesh Pointer to the parent mesh.
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*/
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inline explicit brep_loop_container(brep_mesh* mesh) noexcept:
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brep_element_container<brep_loop>(mesh)
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{}
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/**
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* Appends a new loop to the end of the container.
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*
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* @return Pointer to the new loop.
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*/
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brep_loop* emplace_back() override;
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};
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} // namespace geom
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#endif // ANTKEEPER_GEOM_BREP_LOOP_HPP
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