118 lines
4.1 KiB
C++
118 lines
4.1 KiB
C++
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#pragma once
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/**
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* @file parallel_boolean.h
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* @brief 并行布尔运算
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*
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* OpenMP 并行化：面-面求交、射线分类、网格构建。
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* 串行兼容（OpenMP 不可用时退化到串行）。
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*
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* @ingroup brep
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*/
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#include "vde/brep/brep.h"
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#include "vde/mesh/halfedge_mesh.h"
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#include <vector>
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#include <functional>
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namespace vde::brep {
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// ═══════════════════════════════════════════════════════════
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// Parallel Face-Face Intersection
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// ═══════════════════════════════════════════════════════════
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/**
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* @brief 并行计算两实体所有面对的交线
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*
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* 外层循环用 OpenMP parallel for 分发面对，内层为单对求交。
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* 结果线程安全合并。
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*
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* @param a 实体 A
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* @param b 实体 B
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* @return 所有交线段的集合（每条交线段为 {起点, 终点}）
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*/
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[[nodiscard]] std::vector<std::pair<core::Point3D, core::Point3D>>
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parallel_face_face_intersection(const BrepModel& a, const BrepModel& b);
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// ═══════════════════════════════════════════════════════════
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// Parallel Classification
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// ═══════════════════════════════════════════════════════════
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/// 面分类结果
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enum class FaceClassification {
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Inside, ///< 面在另一实体内部
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Outside, ///< 面在另一实体外部
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OnBoundary, ///< 面在边界上
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Unknown, ///< 无法确定
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};
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/**
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* @brief 并行对面进行分类（IN/OUT/ON 判定）
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*
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* 每个面独立射线投射测试，线程安全。
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*
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* @param faces 待分类的面ID列表
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* @param body 目标实体
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* @return face_id → 分类结果
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*/
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[[nodiscard]] std::vector<FaceClassification>
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parallel_classify_faces(const BrepModel& body,
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const std::vector<int>& face_ids);
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// ═══════════════════════════════════════════════════════════
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// Parallel Boolean Operations
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// ═══════════════════════════════════════════════════════════
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/**
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* @brief 并行网格布尔并集
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*
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* @param a 实体 A 的网格
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* @param b 实体 B 的网格
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* @return 并集网格
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*/
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[[nodiscard]] mesh::HalfedgeMesh parallel_mesh_union(
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const mesh::HalfedgeMesh& a, const mesh::HalfedgeMesh& b);
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/**
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* @brief 并行网格布尔交集
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*/
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[[nodiscard]] mesh::HalfedgeMesh parallel_mesh_intersection(
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const mesh::HalfedgeMesh& a, const mesh::HalfedgeMesh& b);
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/**
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* @brief 并行网格布尔差集 (A - B)
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*/
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[[nodiscard]] mesh::HalfedgeMesh parallel_mesh_difference(
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const mesh::HalfedgeMesh& a, const mesh::HalfedgeMesh& b);
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/**
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* @brief 并行 B-Rep 布尔并集
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*
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* 完整管线：平行面-面求交 → 平行分类 → 缝合
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*/
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[[nodiscard]] BrepModel parallel_brep_union(
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const BrepModel& a, const BrepModel& b);
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/**
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* @brief 并行 B-Rep 布尔交集
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*/
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[[nodiscard]] BrepModel parallel_brep_intersection(
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const BrepModel& a, const BrepModel& b);
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/**
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* @brief 并行 B-Rep 布尔差集 (A - B)
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*/
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[[nodiscard]] BrepModel parallel_brep_difference(
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const BrepModel& a, const BrepModel& b);
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// ═══════════════════════════════════════════════════════════
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// Performance helpers
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// ═══════════════════════════════════════════════════════════
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/// 获取可用线程数
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[[nodiscard]] int parallel_thread_count();
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/// 设置并行线程数（0 = 自动）
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void set_parallel_threads(int n);
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} // namespace vde::brep
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