Zhicheng Wang
2 months ago
11 changed files with 473 additions and 164 deletions
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#include <data/data_center.hpp> |
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namespace internal |
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{ |
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void cylinder_t::initialize(primitive_data_center_t &data_center) |
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{ |
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auto bottom_plane_mat = data_center.require_transform_block(internal::plane_to_z_model_matrix); |
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auto cylinder_mat = data_center.require_transform_block(internal::identity_model_matrix); |
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auto top_plane_mat = data_center.require_transform_block(internal::plane_to_z_pos_1_model_matrix); |
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primitive::initialize(data_center, {cylinder_mat, bottom_plane_mat, top_plane_mat}); |
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} |
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void cylinder_t::destroy() |
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{ |
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primitive_data_center_t &data_center = bottom_plane->data_center; |
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data_center.release_surface(surface_type::cylinder, static_pointer_cast<subface>(cylinder_face)); |
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data_center.release_surface(surface_type::plane, static_pointer_cast<subface>(bottom_plane)); |
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data_center.release_surface(surface_type::plane, static_pointer_cast<subface>(top_plane)); |
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} |
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// void cylinder_t::initialize(primitive_data_center_t &data_center,
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// const std::vector<std::pair<internal::paired_model_matrix *, bool>> &new_model_matrices)
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// {
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// std::array<subface *, 3> old_ptrs{cylinder_face.get_ptr(), bottom_plane.get_ptr(), top_plane.get_ptr()};
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// std::array<paired_model_matrix *, 3> old_model_matrices{nullptr, nullptr, nullptr};
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// for (size_t i = 0; i < 3; ++i) {
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// if (old_ptrs[i] != nullptr) old_model_matrices[i] = old_ptrs[i]->model_matrices;
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// }
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// {
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// auto [iter, is_new] = data_center.cylinders.acquire(cylinder_paired_model_matrix{new_model_matrices[0].first});
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// cylinder_face.set_ptr(iter.operator->());
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// cylinder_face.set_mark(new_model_matrices[0].second);
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// if (is_new) cylinder_face.get_ptr()->data_center = &data_center;
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// }
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// {
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// auto [iter, is_new] = data_center.planes.acquire(plane_paired_model_matrix{new_model_matrices[1].first});
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// bottom_plane.set_ptr(iter.operator->());
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// bottom_plane.set_mark(new_model_matrices[1].second);
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// if (is_new) bottom_plane.get_ptr()->data_center = &data_center;
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// }
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// {
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// auto [iter, is_new] = data_center.planes.acquire(plane_paired_model_matrix{new_model_matrices[2].first});
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// top_plane.set_ptr(iter.operator->());
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// top_plane.set_mark(new_model_matrices[2].second);
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// if (is_new) top_plane.get_ptr()->data_center = &data_center;
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// }
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// // deferred release to avoid acquiring the same just-released subface
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// {
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// if (old_ptrs[0] != nullptr)
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// data_center.cylinders.release(cylinder_paired_model_matrix{old_model_matrices[0]});
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// if (old_ptrs[1] != nullptr)
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// data_center.planes.release(plane_paired_model_matrix{old_model_matrices[1]});
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// if (old_ptrs[2] != nullptr)
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// data_center.planes.release(plane_paired_model_matrix{old_model_matrices[2]});
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// }
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// }
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} // namespace internal
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@ -1,31 +0,0 @@ |
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#include <data/data_center.hpp> |
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namespace internal |
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{ |
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void sphere_t::initialize(primitive_data_center_t &data_center) |
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{ |
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primitive::initialize(data_center, {data_center.require_transform_block(internal::identity_model_matrix)}); |
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} |
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void sphere_t::destroy() |
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{ |
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primitive_data_center_t& data_center = sphere_face->data_center; |
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data_center.release_surface(surface_type::sphere, static_pointer_cast<subface>(sphere_face)); |
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} |
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// void sphere_t::initialize(primitive_data_center_t &data_center,
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// const std::vector<std::pair<internal::paired_model_matrix *, bool>> &new_model_matrices)
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// {
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// auto old_ptr = sphere_face.get_ptr();
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// paired_model_matrix *old_model_matrices{nullptr};
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// if (old_ptr != nullptr) old_model_matrices = old_ptr->model_matrices;
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// auto [iter, is_new] = data_center.spheres.acquire(new_model_matrices[0].first);
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// sphere_face.set_ptr(iter.operator->());
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// sphere_face.set_mark(new_model_matrices[0].second);
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// if (is_new) sphere_face.get_ptr()->data_center = &data_center;
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// // deferred release to avoid acquiring the same just-released subface
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// if (old_ptr != nullptr) data_center.spheres.release(old_model_matrices);
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// }
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} // namespace internal
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@ -0,0 +1,389 @@ |
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#pragma once |
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#include <array> |
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#include <cstddef> |
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#include <limits> |
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#include <type_traits> |
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inline constexpr std::size_t dynamic_extent = std::numeric_limits<std::size_t>::max(); |
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template <typename ElementType, std::size_t Extent = dynamic_extent> |
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class span; |
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namespace detail |
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{ |
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template <typename E, std::size_t S> |
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struct span_storage { |
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constexpr span_storage() noexcept = default; |
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constexpr span_storage(E* p_ptr, std::size_t /*unused*/) noexcept : ptr(p_ptr) {} |
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E* ptr = nullptr; |
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static constexpr std::size_t size = S; |
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}; |
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template <typename E> |
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struct span_storage<E, dynamic_extent> { |
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constexpr span_storage() noexcept = default; |
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constexpr span_storage(E* p_ptr, std::size_t p_size) noexcept : ptr(p_ptr), size(p_size) {} |
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E* ptr = nullptr; |
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std::size_t size = 0; |
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}; |
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using std::void_t; |
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template <typename T> |
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using uncvref_t = typename std::remove_cv_t<std::remove_reference_t<T>>; |
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template <typename> |
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struct is_span : std::false_type { |
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}; |
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template <typename T, std::size_t S> |
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struct is_span<span<T, S>> : std::true_type { |
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}; |
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template <typename T> |
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static constexpr auto is_span_v = is_span<T>::value; |
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template <typename> |
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struct is_std_array : std::false_type { |
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}; |
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template <typename T, std::size_t N> |
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struct is_std_array<std::array<T, N>> : std::true_type { |
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}; |
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template <typename T> |
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static constexpr auto is_std_array_v = is_std_array<T>::value; |
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template <typename, typename = void> |
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struct has_size_and_data : std::false_type { |
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}; |
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template <typename T> |
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struct has_size_and_data<T, void_t<decltype(std::size(std::declval<T>())), decltype(std::data(std::declval<T>()))>> |
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: std::true_type { |
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}; |
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template <typename T> |
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static constexpr auto has_size_and_data_v = has_size_and_data<T>::value; |
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template <typename C, typename U = uncvref_t<C>> |
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struct is_container { |
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static constexpr bool value = !is_span_v<U> && !is_std_array_v<U> && !std::is_array_v<U> && has_size_and_data_v<C>; |
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}; |
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template <typename C> |
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static constexpr auto is_container_v = is_container<C>::value; |
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template <typename T> |
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using remove_pointer_t = std::remove_pointer_t<T>; |
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template <typename, typename, typename = void> |
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struct is_container_element_type_compatible : std::false_type { |
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}; |
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template <typename T, typename E> |
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struct is_container_element_type_compatible< |
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T, |
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E, |
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typename std::enable_if< |
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!std::is_same_v<std::remove_cv_t<decltype(std::data(std::declval<T>()))>, void> |
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&& std::is_convertible_v<remove_pointer_t<decltype(std::data(std::declval<T>()))> (*)[], E (*)[]>>::type> |
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: std::true_type { |
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}; |
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template <typename T, typename E> |
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static constexpr auto is_container_element_type_compatible_v = is_container_element_type_compatible<T, E>::value; |
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template <typename, typename = size_t> |
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struct is_complete : std::false_type { |
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}; |
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template <typename T> |
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struct is_complete<T, decltype(sizeof(T))> : std::true_type { |
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}; |
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template <typename T> |
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static constexpr auto is_complete_v = is_complete<T>::value; |
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} // namespace detail
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template <typename ElementType, std::size_t Extent> |
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class span |
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{ |
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static_assert(std::is_object_v<ElementType>, |
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"A span's ElementType must be an object type (not a " |
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"reference type or void)"); |
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static_assert(detail::is_complete_v<ElementType>, |
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"A span's ElementType must be a complete type (not a forward " |
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"declaration)"); |
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static_assert(!std::is_abstract_v<ElementType>, "A span's ElementType cannot be an abstract class type"); |
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using storage_type = detail::span_storage<ElementType, Extent>; |
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public: |
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// constants and types
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using element_type = ElementType; |
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using value_type = std::remove_cv_t<ElementType>; |
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using size_type = std::size_t; |
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using difference_type = std::ptrdiff_t; |
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using pointer = element_type*; |
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using const_pointer = const element_type*; |
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using reference = element_type&; |
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using const_reference = const element_type&; |
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using iterator = pointer; |
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using reverse_iterator = std::reverse_iterator<iterator>; |
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static constexpr size_type extent = Extent; |
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// [span.cons], span constructors, copy, assignment, and destructor
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template <std::size_t E = Extent, typename std::enable_if_t<(E == dynamic_extent || E <= 0), int> = 0> |
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constexpr span() noexcept |
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{ |
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} |
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constexpr span(pointer ptr, size_type count) : storage_(ptr, count) { assert(extent == dynamic_extent || count == extent); } |
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constexpr span(pointer first_elem, pointer last_elem) : storage_(first_elem, last_elem - first_elem) |
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{ |
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assert(extent == dynamic_extent || last_elem - first_elem == static_cast<std::ptrdiff_t>(extent)); |
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} |
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template <std::size_t N, |
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std::size_t E = Extent, |
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typename = std::enable_if_t<(E == dynamic_extent || N == E) |
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&& detail::is_container_element_type_compatible_v<element_type (&)[N], ElementType>>> |
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constexpr span(element_type (&arr)[N]) noexcept : storage_(arr, N) |
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{ |
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} |
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template <typename T, |
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std::size_t N, |
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std::size_t E = Extent, |
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typename = std::enable_if_t<(E == dynamic_extent || N == E) |
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&& detail::is_container_element_type_compatible_v<std::array<T, N>&, ElementType>>> |
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constexpr span(std::array<T, N>& arr) noexcept : storage_(arr.data(), N) |
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{ |
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} |
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template < |
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typename T, |
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std::size_t N, |
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std::size_t E = Extent, |
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typename = std::enable_if_t<(E == dynamic_extent || N == E) |
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&& detail::is_container_element_type_compatible_v<const std::array<T, N>&, ElementType>>> |
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constexpr span(const std::array<T, N>& arr) noexcept : storage_(arr.data(), N) |
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{ |
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} |
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template <typename Container, |
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std::size_t E = Extent, |
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typename = std::enable_if_t<E == dynamic_extent && detail::is_container_v<Container> |
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&& detail::is_container_element_type_compatible_v<Container&, ElementType>>> |
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constexpr span(Container& cont) : storage_(std::data(cont), std::size(cont)) |
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{ |
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} |
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template <typename Container, |
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std::size_t E = Extent, |
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typename = std::enable_if_t<E == dynamic_extent && detail::is_container_v<Container> |
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&& detail::is_container_element_type_compatible_v<const Container&, ElementType>>> |
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constexpr span(const Container& cont) : storage_(std::data(cont), std::size(cont)) |
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{ |
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} |
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constexpr span(const span& other) noexcept = default; |
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template <typename OtherElementType, |
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std::size_t OtherExtent, |
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typename = std::enable_if_t<(Extent == dynamic_extent || OtherExtent == dynamic_extent || Extent == OtherExtent) |
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&& std::is_convertible_v<OtherElementType (*)[], ElementType (*)[]>>> |
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constexpr span(const span<OtherElementType, OtherExtent>& other) noexcept : storage_(other.data(), other.size()) |
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{ |
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} |
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~span() noexcept = default; |
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constexpr span& operator=(const span& other) noexcept = default; |
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// [span.sub], span subviews
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template <std::size_t Count> |
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constexpr span<element_type, Count> first() const |
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{ |
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assert(Count <= size()); |
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return {data(), Count}; |
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} |
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template <std::size_t Count> |
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constexpr span<element_type, Count> last() const |
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{ |
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assert(Count <= size()); |
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return {data() + (size() - Count), Count}; |
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} |
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template <std::size_t Offset, std::size_t Count = dynamic_extent> |
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using subspan_return_t = |
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span<ElementType, Count != dynamic_extent ? Count : (Extent != dynamic_extent ? Extent - Offset : dynamic_extent)>; |
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template <std::size_t Offset, std::size_t Count = dynamic_extent> |
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constexpr subspan_return_t<Offset, Count> subspan() const |
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{ |
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assert(Offset <= size() && (Count == dynamic_extent || Offset + Count <= size())); |
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return {data() + Offset, Count != dynamic_extent ? Count : size() - Offset}; |
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} |
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constexpr span<element_type, dynamic_extent> first(size_type count) const |
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{ |
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assert(count <= size()); |
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return {data(), count}; |
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} |
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constexpr span<element_type, dynamic_extent> last(size_type count) const |
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{ |
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assert(count <= size()); |
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return {data() + (size() - count), count}; |
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} |
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constexpr span<element_type, dynamic_extent> subspan(size_type offset, size_type count = dynamic_extent) const |
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{ |
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assert(offset <= size() && (count == dynamic_extent || offset + count <= size())); |
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return {data() + offset, count == dynamic_extent ? size() - offset : count}; |
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} |
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// [span.obs], span observers
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constexpr size_type size() const noexcept { return storage_.size; } |
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constexpr size_type size_bytes() const noexcept { return size() * sizeof(element_type); } |
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[[nodiscard]] constexpr bool empty() const noexcept { return size() == 0; } |
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// [span.elem], span element access
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constexpr reference operator[](size_type idx) const |
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{ |
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assert(idx < size()); |
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return *(data() + idx); |
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} |
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constexpr reference front() const |
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{ |
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assert(!empty()); |
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return *data(); |
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} |
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constexpr reference back() const |
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{ |
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assert(!empty()); |
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return *(data() + (size() - 1)); |
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} |
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constexpr pointer data() const noexcept { return storage_.ptr; } |
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// [span.iterators], span iterator support
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constexpr iterator begin() const noexcept { return data(); } |
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constexpr iterator end() const noexcept { return data() + size(); } |
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constexpr reverse_iterator rbegin() const noexcept { return reverse_iterator(end()); } |
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constexpr reverse_iterator rend() const noexcept { return reverse_iterator(begin()); } |
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private: |
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storage_type storage_{}; |
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}; |
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/* Deduction Guides */ |
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template <class T, size_t N> |
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span(T (&)[N]) -> span<T, N>; |
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template <class T, size_t N> |
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span(std::array<T, N>&) -> span<T, N>; |
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template <class T, size_t N> |
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span(const std::array<T, N>&) -> span<const T, N>; |
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template <class Container> |
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span(Container&) -> span<std::remove_reference_t<decltype(*std::data(std::declval<Container&>()))>>; |
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template <class Container> |
||||
|
span(const Container&) -> span<const typename Container::value_type>; |
||||
|
|
||||
|
template <typename ElementType, std::size_t Extent> |
||||
|
constexpr span<ElementType, Extent> make_span(span<ElementType, Extent> s) noexcept |
||||
|
{ |
||||
|
return s; |
||||
|
} |
||||
|
|
||||
|
template <typename T, std::size_t N> |
||||
|
constexpr span<T, N> make_span(T (&arr)[N]) noexcept |
||||
|
{ |
||||
|
return {arr}; |
||||
|
} |
||||
|
|
||||
|
template <typename T, std::size_t N> |
||||
|
constexpr span<T, N> make_span(std::array<T, N>& arr) noexcept |
||||
|
{ |
||||
|
return {arr}; |
||||
|
} |
||||
|
|
||||
|
template <typename T, std::size_t N> |
||||
|
constexpr span<const T, N> make_span(const std::array<T, N>& arr) noexcept |
||||
|
{ |
||||
|
return {arr}; |
||||
|
} |
||||
|
|
||||
|
template <typename Container> |
||||
|
constexpr span<std::remove_reference_t<decltype(*std::data(std::declval<Container&>()))>> make_span(Container& cont) |
||||
|
{ |
||||
|
return {cont}; |
||||
|
} |
||||
|
|
||||
|
template <typename Container> |
||||
|
constexpr span<const typename Container::value_type> make_span(const Container& cont) |
||||
|
{ |
||||
|
return {cont}; |
||||
|
} |
||||
|
|
||||
|
template <typename ElementType, std::size_t Extent> |
||||
|
span<const std::byte, ((Extent == dynamic_extent) ? dynamic_extent : sizeof(ElementType) * Extent)> as_bytes( |
||||
|
span<ElementType, Extent> s) noexcept |
||||
|
{ |
||||
|
return {reinterpret_cast<const std::byte*>(s.data()), s.size_bytes()}; |
||||
|
} |
||||
|
|
||||
|
template <class ElementType, size_t Extent, typename = std::enable_if_t<!std::is_const_v<ElementType>>> |
||||
|
span<std::byte, ((Extent == dynamic_extent) ? dynamic_extent : sizeof(ElementType) * Extent)> as_writable_bytes( |
||||
|
span<ElementType, Extent> s) noexcept |
||||
|
{ |
||||
|
return {reinterpret_cast<std::byte*>(s.data()), s.size_bytes()}; |
||||
|
} |
||||
|
|
||||
|
template <std::size_t N, typename E, std::size_t S> |
||||
|
constexpr auto get(span<E, S> s) -> decltype(s[N]) |
||||
|
{ |
||||
|
return s[N]; |
||||
|
} |
||||
|
|
||||
|
namespace std |
||||
|
{ |
||||
|
template <typename ElementType, size_t Extent> |
||||
|
class tuple_size<::span<ElementType, Extent>> : public integral_constant<size_t, Extent> |
||||
|
{ |
||||
|
}; |
||||
|
|
||||
|
template <typename ElementType> |
||||
|
class tuple_size<::span<ElementType, ::dynamic_extent>>; // not defined
|
||||
|
|
||||
|
template <size_t I, typename ElementType, size_t Extent> |
||||
|
class tuple_element<I, ::span<ElementType, Extent>> |
||||
|
{ |
||||
|
public: |
||||
|
static_assert(Extent != ::dynamic_extent && I < Extent, ""); |
||||
|
using type = ElementType; |
||||
|
}; |
||||
|
|
||||
|
} // end namespace std
|
||||
Loading…
Reference in new issue