茂之钳
1db1a83c5d
- analyze_wall_thickness(): samples surface points, computes min distance to vertices/centroids on other faces (no mesh tessellation needed) - WallThicknessResult: min/max/avg, thin_threshold, thick_threshold - 3 new tests, 29/29 passing
84 lines
2.6 KiB
C++
84 lines
2.6 KiB
C++
#pragma once
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/**
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* @file measure.h
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* @brief B-Rep 测量工具
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*
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* 提供 B-Rep 实体的几何属性测量函数：
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* - 体积（散度定理）
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* - 表面积（三角剖分求和）
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* - 质心
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* - 两实体间最小距离
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* - 质量属性（惯性张量、回转半径）
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* - 装配体质量属性 + BOM 物料清单
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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/brep/assembly.h"
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#include "vde/core/point.h"
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#include <Eigen/Dense>
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#include <string>
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#include <vector>
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namespace vde::brep {
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/// 质量属性结果：体积、质心、惯性张量、回转半径（ρ=1）
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struct MassProperties {
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double volume = 0.0;
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core::Point3D centroid{0, 0, 0};
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Eigen::Matrix3d inertia{Eigen::Matrix3d::Zero()};
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core::Vector3D gyration_radii{0, 0, 0};
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};
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/// BOM 条目：零件名 + 数量 + 体积
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struct BomEntry {
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std::string name;
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int quantity = 0;
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double volume = 0.0;
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double total_volume = 0.0;
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};
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// ── Basic measurements ──
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[[nodiscard]] double distance(const BrepModel& a, const BrepModel& b);
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[[nodiscard]] double surface_area(const BrepModel& body);
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[[nodiscard]] double volume(const BrepModel& body);
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[[nodiscard]] core::Point3D centroid(const BrepModel& body);
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// ── Mass properties ──
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[[nodiscard]] MassProperties mass_properties(const BrepModel& body);
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[[nodiscard]] MassProperties assembly_mass_properties(const AssemblyNode& node,
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const core::Transform3D& parent_tf = core::Transform3D::Identity());
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// ── Gap analysis ──
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[[nodiscard]] double clearance(const BrepModel& a, const BrepModel& b);
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// ── BOM ──
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/// 生成扁平合并的物料清单（按名称排序）
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[[nodiscard]] std::vector<BomEntry> generate_bom(const AssemblyNode& node);
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// ── Wall thickness analysis ──
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/// 壁厚分析结果
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struct WallThicknessResult {
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double min_thickness = 0.0; ///< 最小壁厚
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double max_thickness = 0.0; ///< 最大壁厚
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double avg_thickness = 0.0; ///< 平均壁厚
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int thin_regions = 0; ///< 薄壁区域数（< thin_threshold）
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int thick_regions = 0; ///< 厚壁区域数（> thick_threshold）
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double thin_threshold = 1.0; ///< 薄壁判定阈值
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double thick_threshold = 10.0; ///< 厚壁判定阈值
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};
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/// 壁厚分析：沿各面法向采样，射线检测对面距离
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/// @param body B-Rep 实体
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/// @param samples_per_face 每个面的采样点数（默认 5×5=25）
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/// @return 壁厚统计结果
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[[nodiscard]] WallThicknessResult analyze_wall_thickness(const BrepModel& body,
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int samples_per_face = 5);
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} // namespace vde::brep
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