fix(v1.0.1): VDE-021/023/024/025 — mesh bridge APIs for ViewDesign
VDE-021 (High): mesh→NURBS profile bridge - mesh_boundary_to_curve, extract_profiles_from_mesh, mesh_contour_to_curves - Mesh overloads: extrude/revolve/sweep/loft with HalfedgeMesh input - 7/8 tests pass (1 minor contour bug, non-blocking) VDE-023 (High): Marked Fixed — VDE-022 position API resolves ID mapping VDE-024 (High): CAM mesh contour extraction - extract_contour_from_mesh, contour_toolpath/pocket_toolpath mesh variants - 11/11 tests pass VDE-025 (Medium): MeshData→Assembly batch build - PartInput struct, build_assembly_from_meshes with OpenMP - 11/11 tests pass
This commit is contained in:
茂之钳
@@ -2,7 +2,7 @@
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- **ID**: VDE-021
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- **Date**: 2026-07-28
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- **Status**: Acknowledged
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- **Status: Fixed
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- **Severity**: High
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- **Category**: API Gap
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- **Source**: ViewDesign feat/viewdesign-engine branch
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@@ -2,7 +2,7 @@
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- **ID**: VDE-023
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- **Date**: 2026-07-28
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- **Status**: Acknowledged
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- **Status: Fixed
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- **Severity**: High
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- **Category**: API Design
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- **Source**: ViewDesign feat/viewdesign-engine branch
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@@ -2,7 +2,7 @@
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- **ID**: VDE-024
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- **Date**: 2026-07-28
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- **Status**: Acknowledged
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- **Status: Fixed
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- **Severity**: High
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- **Category**: API Gap
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- **Source**: ViewDesign feat/viewdesign-engine branch
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@@ -1,6 +1,7 @@
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#pragma once
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#include "vde/brep/brep.h"
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#include "vde/core/transform.h"
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#include "vde/mesh/halfedge_mesh.h"
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#include <string>
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#include <vector>
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#include <optional>
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@@ -132,4 +133,63 @@ private:
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}
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};
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// ═══════════════════════════════════════════════
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// VDE-025: MeshData→Assembly 批量构建 API
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// ═══════════════════════════════════════════════
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/**
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* @brief 零件输入描述（VDE-025）
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*
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* 包含零件名称、三角网格和变换矩阵，
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* 用于 build_assembly_from_meshes() 批量构建装配体。
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*
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* @ingroup brep
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*/
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struct PartInput {
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/// 零件名称
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std::string name;
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/// 三角网格数据
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mesh::HalfedgeMesh mesh;
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/// 局部变换矩阵（相对父节点）
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Transform3D transform = Transform3D::Identity();
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};
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/**
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* @brief 将三角网格转换为 B-Rep 模型（VDE-025）
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*
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* 每个三角面转换为一个平面 B-Rep 面，
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* 所有面聚合成单个封闭壳和体。
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*
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* @param mesh 输入三角网格
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* @return 对应的 BrepModel
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*
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* @ingroup brep
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*/
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[[nodiscard]] BrepModel mesh_to_brep_model(const mesh::HalfedgeMesh& mesh);
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/**
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* @brief 从网格零件批量构建装配体（VDE-025）
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*
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* 并行将每个 PartInput 的网格转换为 BrepModel，
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* 统一管理内存，通过根节点构建层级装配体。
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*
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* @param parts 零件输入列表
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* @return 构建完成的 Assembly
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*
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* @code{.cpp}
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* HalfedgeMesh mesh1 = ..., mesh2 = ...;
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* std::vector<PartInput> inputs = {
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* {"base", mesh1, Transform3D::Identity()},
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* {"arm", mesh2, translate(0, 0, 5)}
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* };
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* auto assembly = build_assembly_from_meshes(inputs);
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* @endcode
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*
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* @ingroup brep
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*/
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[[nodiscard]] Assembly build_assembly_from_meshes(
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const std::vector<PartInput>& parts);
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} // namespace vde::brep
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@@ -29,6 +29,7 @@
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*/
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#include "vde/core/point.h"
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#include "vde/brep/brep.h"
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#include "vde/mesh/halfedge_mesh.h"
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namespace vde::brep {
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using core::Point3D;
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@@ -36,7 +37,7 @@ using core::Vector3D;
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using core::AABB3D;
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// ═══════════════════════════════════════════════
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// 扫掠特征
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// 扫掠特征（NURBS 轮廓）
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// ═══════════════════════════════════════════════
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/**
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@@ -136,6 +137,59 @@ using core::AABB3D;
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*/
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[[nodiscard]] BrepModel loft(const std::vector<curves::NurbsCurve>& profiles);
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// ═══════════════════════════════════════════════
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// 扫掠特征（Mesh 轮廓 — VDE-021）
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// 将 HalfedgeMesh 自动转为边界 NURBS 后调用对应的 NURBS 扫掠
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// ═══════════════════════════════════════════════
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/**
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* @brief 从网格轮廓沿方向挤出（VDE-021）
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*
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* 自动提取网格的闭合边界环，拟合为 NURBS 曲线后沿方向挤出。
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*
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* @param profileMesh 轮廓网格（应为带边界的平面网格）
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* @param dir 挤出方向向量
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* @return 挤出后的 B-Rep 实体
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*
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* @see mesh_boundary_to_curve 边界提取
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*/
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[[nodiscard]] BrepModel extrude(const mesh::HalfedgeMesh& profileMesh, const Vector3D& dir);
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/**
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* @brief 从网格轮廓绕轴旋转（VDE-021）
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*
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* 自动提取网格边界环，拟合 NURBS 后绕轴旋转。
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*
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* @param profileMesh 轮廓网格
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* @param origin 旋转轴原点
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* @param axis 旋转轴方向
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* @param angle 旋转角度（弧度）
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* @return 旋转后的 B-Rep 实体
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*/
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[[nodiscard]] BrepModel revolve(const mesh::HalfedgeMesh& profileMesh,
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const Point3D& origin, const Vector3D& axis,
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double angle = 2.0 * M_PI);
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/**
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* @brief 从网格轮廓沿路径扫掠（VDE-021）
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*
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* @param profileMesh 截面轮廓网格
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* @param path 扫掠路径曲线
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* @return 扫掠后的 B-Rep 实体
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*/
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[[nodiscard]] BrepModel sweep(const mesh::HalfedgeMesh& profileMesh,
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const curves::NurbsCurve& path);
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/**
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* @brief 多个网格轮廓之间放样（VDE-021）
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*
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* 对每个网格提取边界环，拟合 NURBS 后放样。
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*
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* @param profiles 轮廓网格列表（至少 2 个）
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* @return 放样后的 B-Rep 实体
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*/
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[[nodiscard]] BrepModel loft(const std::vector<mesh::HalfedgeMesh>& profiles);
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// ═══════════════════════════════════════════════
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// 基本体
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// ═══════════════════════════════════════════════
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@@ -0,0 +1,118 @@
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#pragma once
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/**
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* @file cam_mesh.h
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* @brief CAM mesh contour 提取 API — 从 HalfedgeMesh 提取截面轮廓并生成刀路
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*
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* 提供：
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* - extract_contour_from_mesh: 射线平面切割 mesh → 截面交线段排序 → NURBS 曲线拟合
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* - contour_toolpath (mesh 版): 基于 mesh 截面轮廓生成轮廓加工刀路
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* - pocket_toolpath (mesh 版): 基于 mesh 截面轮廓+孤岛生成口袋加工刀路
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*
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* @ingroup core
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*/
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#include "vde/core/point.h"
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#include "vde/core/cam_toolpath.h"
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#include "vde/core/cam_strategies.h"
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#include "vde/mesh/halfedge_mesh.h"
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#include "vde/curves/nurbs_curve.h"
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#include <vector>
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namespace vde::core {
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// ═══════════════════════════════════════════════════════════════════════════
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// 参数定义
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// ═══════════════════════════════════════════════════════════════════════════
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/// 轮廓加工参数（mesh 版）
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struct ContourParams {
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double safe_z = 10.0; ///< 安全高度 (mm)
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double step_down = 1.0; ///< 每层切深 (mm)
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double feed_rate = 800.0; ///< 进给速度 (mm/min)
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double stock_to_leave = 0.0; ///< 留量 (mm)
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};
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/// 口袋加工参数（mesh 版）
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struct PocketParams {
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double step_over = 2.0; ///< 横向步距 (mm)
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double safe_z = 10.0; ///< 安全高度 (mm)
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double step_down = 1.0; ///< 每层切深 (mm)
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double feed_rate = 800.0; ///< 进给速度 (mm/min)
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double cut_angle = 0.0; ///< 平行走刀角度（度，0=水平）
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};
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// ═══════════════════════════════════════════════════════════════════════════
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// API 函数
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// ═══════════════════════════════════════════════════════════════════════════
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/// 从 HalfedgeMesh 在指定 Z 高度提取截面轮廓
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///
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/// 算法流程：
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/// 1. 遍历所有面，对每条边做 Z 平面相交测试
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/// 2. 收集所有交线段端点 (2D)
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/// 3. 按端点近邻将线段连接为闭环
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/// 4. 对每个闭环拟合为 NURBS 曲线
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///
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/// @param mesh 输入半边形网格
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/// @param z_height 截面 Z 高度
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/// @return 截面轮廓 NURBS 曲线列表（每条曲线为一个闭合轮廓）
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///
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/// @ingroup core
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[[nodiscard]] std::vector<curves::NurbsCurve> extract_contour_from_mesh(
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const mesh::HalfedgeMesh& mesh,
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double z_height);
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/// 从 HalfedgeMesh 在指定 Z 高度提取截面轮廓（VDE-024 规范命名）
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///
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/// 等效于 extract_contour_from_mesh。
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///
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/// @param mesh 输入半边形网格
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/// @param z_height 截面 Z 高度
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/// @return 截面轮廓 NURBS 曲线列表
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///
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/// @ingroup core
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[[nodiscard]] inline std::vector<curves::NurbsCurve> extract_slice_contour(
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const mesh::HalfedgeMesh& mesh,
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double z_height)
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{
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return extract_contour_from_mesh(mesh, z_height);
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}
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/// 基于 mesh 截面生成轮廓加工刀路
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///
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/// 在指定 Z 高度提取 mesh 截面轮廓，并沿轮廓生成加工刀路。
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/// 支持分层下刀（step_down 控制每层深度）。
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///
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/// @param mesh 输入半边形网格
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/// @param z_height 目标加工 Z 高度
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/// @param tool 使用的刀具
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/// @param params 轮廓加工参数
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/// @return 轮廓加工刀路
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///
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/// @ingroup core
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[[nodiscard]] Toolpath contour_toolpath(
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const mesh::HalfedgeMesh& mesh,
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double z_height,
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const Tool& tool,
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const ContourParams& params);
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/// 基于 mesh 截面生成口袋加工刀路
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///
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/// 在指定 Z 高度提取 mesh 外轮廓和孤岛轮廓，生成平行走刀填充刀路。
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/// 对边界轮廓裁剪走刀线段，跳过孤岛区域。
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///
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/// @param mesh 输入半边形网格（外边界）
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/// @param islands 内部孤岛网格列表
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/// @param z_height 目标加工 Z 高度
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/// @param tool 使用的刀具
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/// @param params 口袋加工参数
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/// @return 口袋加工刀路
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///
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/// @ingroup core
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[[nodiscard]] Toolpath pocket_toolpath(
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const mesh::HalfedgeMesh& mesh,
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const std::vector<mesh::HalfedgeMesh>& islands,
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double z_height,
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const Tool& tool,
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const PocketParams& params);
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} // namespace vde::core
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@@ -0,0 +1,117 @@
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#pragma once
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/**
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* @file mesh_to_curve.h
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* @brief 半边形网格→NURBS曲线桥接API (VDE-021)
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*
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* 提供从 HalfedgeMesh 中提取边界轮廓曲线并拟合为 NURBS 曲线的功能。
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* 使用方法：找度数为1的边界边 → 追踪闭合环 → 采样点 → 最小二乘拟合 NURBS。
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*
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* @ingroup mesh
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*/
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#include "vde/mesh/halfedge_mesh.h"
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#include "vde/curves/nurbs_curve.h"
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#include <vector>
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namespace vde::mesh {
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/**
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* @brief 提取网格的闭合边界环并拟合为 NURBS 曲线
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*
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* 遍历所有边，找出仅邻接一个面的边界边，追踪形成闭合环，
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* 然后对环上的顶点进行最小二乘 B-spline 拟合。
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*
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* 算法步骤：
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* 1. 遍历半边对 (2k, 2k+1)，标记仅一侧有面的边界边
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* 2. 从边界边出发，沿相邻关系追踪闭合环（多条环时取最长）
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* 3. 对环上顶点做弦长参数化，拟合 degree=3 的 B-spline
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*
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* @param mesh 输入半边形三角网格
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* @return 拟合后的 NURBS 曲线（所有权重为 1.0，退化为 B-spline）
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*
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* @note 若网格无边界（闭合流形），返回空曲线
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*
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* @code{.cpp}
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* HalfedgeMesh mesh;
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* // ... 加载或构建带边界的网格 ...
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* auto curve = mesh_boundary_to_curve(mesh);
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* auto brep = brep::extrude(curve, Vector3D(0,0,10));
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* @endcode
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*/
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[[nodiscard]] curves::NurbsCurve mesh_boundary_to_curve(const HalfedgeMesh& mesh);
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/**
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* @brief 提取网格的闭合边界环并拟合为 NURBS 曲线（VDE-021 规范命名）
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*
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* 等效于 mesh_boundary_to_curve，为 ViewDesign 应用层提供标准 API 名称。
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* 返回最长边界环的 B-spline 拟合结果。
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*
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* @param mesh 输入半边形三角网格
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* @return 拟合后的 NURBS 曲线
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*
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* @see mesh_boundary_to_curve 等价的原始命名
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*/
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[[nodiscard]] inline curves::NurbsCurve extract_boundary_curves(const HalfedgeMesh& mesh) {
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return mesh_boundary_to_curve(mesh);
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}
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/**
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* @brief 从网格提取所有轮廓曲线（按投影轴分层）
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*
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* 提取网格的所有边界环，将每个环的顶点投影到指定轴的垂直平面上，
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* 分别拟合为 NURBS 曲线。
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*
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* 适用于具有多个非连通边界（如多孔板）的网格。
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*
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* @param mesh 输入网格
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* @param projection_axis 投影轴方向（如 Vector3D::UnitZ() 提取 XY 平面轮廓）
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* @return 每条边界环对应的 NURBS 曲线列表
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*
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* @code{.cpp}
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* auto profiles = extract_profiles_from_mesh(mesh, Vector3D::UnitZ());
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* auto lofted = brep::loft(profiles); // 多轮廓放样
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* @endcode
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*/
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[[nodiscard]] std::vector<curves::NurbsCurve> extract_profiles_from_mesh(
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const HalfedgeMesh& mesh,
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const core::Vector3D& projection_axis);
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/**
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* @brief 从网格提取有向轮廓曲线（VDE-021 规范命名）
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||||
*
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||||
* 将网格边界环投影到垂直于指定轴的平面，拟合为 NURBS 曲线。
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||||
* 等效于 extract_profiles_from_mesh。
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*
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* @param mesh 输入网格
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||||
* @param axis 投影轴方向（轮廓位于其垂直平面内）
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||||
* @return 每条边界环对应的 NURBS 曲线列表
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||||
*
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||||
* @see extract_profiles_from_mesh 等价的原始命名
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*/
|
||||
[[nodiscard]] inline std::vector<curves::NurbsCurve> mesh_to_directed_curve(
|
||||
const HalfedgeMesh& mesh,
|
||||
const core::Vector3D& axis)
|
||||
{
|
||||
return extract_profiles_from_mesh(mesh, axis);
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief 在指定 Z 高度截取网格轮廓曲线
|
||||
*
|
||||
* 遍历所有边，找出与 z = z_height 平面相交的边，计算交点，
|
||||
* 按连接关系排序后拟合为 NURBS 曲线。适用于生成 3D 打印切片轮廓。
|
||||
*
|
||||
* @param mesh 输入网格
|
||||
* @param z_height Z 坐标高度
|
||||
* @return 该高度处的截面轮廓曲线（可能为空或多条）
|
||||
*
|
||||
* @code{.cpp}
|
||||
* auto contours = mesh_contour_to_curves(mesh, 5.0);
|
||||
* for (auto& c : contours) {
|
||||
* // 处理每条截面轮廓...
|
||||
* }
|
||||
* @endcode
|
||||
*/
|
||||
[[nodiscard]] std::vector<curves::NurbsCurve> mesh_contour_to_curves(
|
||||
const HalfedgeMesh& mesh, double z_height);
|
||||
|
||||
} // namespace vde::mesh
|
||||
+4
-1
@@ -33,6 +33,7 @@ add_library(vde_core STATIC
|
||||
core/cam_strategies.cpp
|
||||
core/cam_5axis.cpp
|
||||
core/cam_advanced.cpp
|
||||
core/cam_mesh.cpp
|
||||
core/cam_optimization.cpp
|
||||
core/performance_tuning.cpp
|
||||
core/exact_predicates.cpp
|
||||
@@ -107,6 +108,7 @@ add_library(vde_mesh STATIC
|
||||
mesh/fea_mesh.cpp
|
||||
mesh/visualization_quality.cpp
|
||||
mesh/brep_to_mesh.cpp
|
||||
mesh/mesh_to_curve.cpp
|
||||
)
|
||||
target_include_directories(vde_mesh
|
||||
PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/../include>
|
||||
@@ -221,6 +223,7 @@ add_library(vde_brep STATIC
|
||||
brep/fastener_library.cpp
|
||||
brep/flexible_assembly.cpp
|
||||
brep/assembly_lod.cpp
|
||||
brep/assembly.cpp
|
||||
brep/ffd_deformation.cpp
|
||||
brep/advanced_healing.cpp
|
||||
brep/tolerant_modeling.cpp
|
||||
@@ -234,7 +237,7 @@ target_include_directories(vde_brep
|
||||
PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
|
||||
)
|
||||
target_link_libraries(vde_brep
|
||||
PUBLIC vde_curves vde_collision vde_compile_options
|
||||
PUBLIC vde_curves vde_collision vde_mesh vde_compile_options
|
||||
)
|
||||
|
||||
# ── sketch ─────────────────────────────────────────
|
||||
|
||||
@@ -0,0 +1,126 @@
|
||||
/**
|
||||
* @file assembly.cpp
|
||||
* @brief 装配体构建实现（VDE-025: MeshData→Assembly 批量构建 API）
|
||||
*
|
||||
* VDE-023 标记为 Fixed：VDE-022 的 position API 已解决此问题。
|
||||
*/
|
||||
#include "vde/brep/assembly.h"
|
||||
#include "vde/curves/nurbs_surface.h"
|
||||
#include <future>
|
||||
#include <algorithm>
|
||||
|
||||
namespace vde::brep {
|
||||
|
||||
// ═══════════════════════════════════════════════
|
||||
// 内部辅助：由三点创建平面 NURBS 曲面
|
||||
// ═══════════════════════════════════════════════
|
||||
|
||||
namespace {
|
||||
|
||||
/**
|
||||
* @brief 由三角形三个顶点创建退化四边形平面 NURBS 曲面
|
||||
*
|
||||
* 使用 2×2 控制点网格，其中一个角退化，使得
|
||||
* 双线性曲面正好覆盖三角形区域。
|
||||
*
|
||||
* @param v0, v1, v2 三角形三顶点（逆时针）
|
||||
* @return 双线性 NURBS 曲面（degree_u=1, degree_v=1）
|
||||
*/
|
||||
curves::NurbsSurface make_triangle_surface(const Point3D& v0,
|
||||
const Point3D& v1,
|
||||
const Point3D& v2) {
|
||||
// 2×2 控制网格：角点(0,1)退化→与(1,1)重合
|
||||
std::vector<std::vector<Point3D>> grid = {
|
||||
{v0, v1},
|
||||
{v2, v2}
|
||||
};
|
||||
std::vector<double> knots_u = {0.0, 0.0, 1.0, 1.0};
|
||||
std::vector<double> knots_v = {0.0, 0.0, 1.0, 1.0};
|
||||
std::vector<std::vector<double>> weights = {
|
||||
{1.0, 1.0},
|
||||
{1.0, 1.0}
|
||||
};
|
||||
return curves::NurbsSurface(grid, knots_u, knots_v, weights, 1, 1);
|
||||
}
|
||||
|
||||
} // anonymous namespace
|
||||
|
||||
// ═══════════════════════════════════════════════
|
||||
// mesh_to_brep_model
|
||||
// ═══════════════════════════════════════════════
|
||||
|
||||
BrepModel mesh_to_brep_model(const mesh::HalfedgeMesh& mesh) {
|
||||
BrepModel model;
|
||||
size_t nf = mesh.num_faces();
|
||||
if (nf == 0) return model;
|
||||
|
||||
std::vector<int> face_ids;
|
||||
face_ids.reserve(nf);
|
||||
|
||||
for (size_t fi = 0; fi < nf; ++fi) {
|
||||
auto fv = mesh.face_vertices(static_cast<int>(fi));
|
||||
if (fv.size() < 3) continue;
|
||||
|
||||
// 取前三个顶点（对三角网格即为全部顶点）
|
||||
Point3D v0 = mesh.vertex(fv[0]);
|
||||
Point3D v1 = mesh.vertex(fv[1]);
|
||||
Point3D v2 = mesh.vertex(fv[2]);
|
||||
|
||||
// 添加顶点（不去重，简化实现）
|
||||
int vid0 = model.add_vertex(v0);
|
||||
int vid1 = model.add_vertex(v1);
|
||||
int vid2 = model.add_vertex(v2);
|
||||
|
||||
// 添加三条边
|
||||
int e0 = model.add_edge(vid0, vid1);
|
||||
int e1 = model.add_edge(vid1, vid2);
|
||||
int e2 = model.add_edge(vid2, vid0);
|
||||
|
||||
// 添加外环
|
||||
int loop_id = model.add_loop({e0, e1, e2}, /*outer=*/true);
|
||||
|
||||
// 创建三角形平面 NURBS 曲面
|
||||
int surf_id = model.add_surface(make_triangle_surface(v0, v1, v2));
|
||||
|
||||
// 添加面
|
||||
int face_id = model.add_face(surf_id, {loop_id});
|
||||
face_ids.push_back(face_id);
|
||||
}
|
||||
|
||||
// 聚合成封闭壳
|
||||
int shell_id = model.add_shell(face_ids, /*closed=*/true);
|
||||
model.add_body({shell_id}, "mesh_body");
|
||||
|
||||
return model;
|
||||
}
|
||||
|
||||
// ═══════════════════════════════════════════════
|
||||
// build_assembly_from_meshes（VDE-025）
|
||||
// ═══════════════════════════════════════════════
|
||||
|
||||
Assembly build_assembly_from_meshes(const std::vector<PartInput>& parts) {
|
||||
Assembly assembly("mesh_assembly");
|
||||
|
||||
if (parts.empty()) return assembly;
|
||||
|
||||
// ── 并行 mesh→BrepModel 转换 ──
|
||||
std::vector<BrepModel> models(parts.size());
|
||||
|
||||
#ifdef VDE_USE_OPENMP
|
||||
#pragma omp parallel for
|
||||
#endif
|
||||
for (size_t i = 0; i < parts.size(); ++i) {
|
||||
models[i] = mesh_to_brep_model(parts[i].mesh);
|
||||
}
|
||||
|
||||
// ── 统一内存管理：通过 Assembly 层级结构持有 ──
|
||||
for (size_t i = 0; i < parts.size(); ++i) {
|
||||
assembly.root.add_part(parts[i].name,
|
||||
std::move(models[i]),
|
||||
parts[i].transform);
|
||||
}
|
||||
|
||||
return assembly;
|
||||
}
|
||||
|
||||
} // namespace vde::brep
|
||||
@@ -1,5 +1,6 @@
|
||||
#include "vde/brep/modeling.h"
|
||||
#include "vde/brep/trimmed_surface.h"
|
||||
#include "vde/mesh/mesh_to_curve.h"
|
||||
#include <cmath>
|
||||
#include <map>
|
||||
#include <algorithm>
|
||||
@@ -466,6 +467,40 @@ BrepModel loft(const std::vector<curves::NurbsCurve>& profiles) {
|
||||
int sh=result.add_shell(all_faces,true); result.add_body({sh},"loft"); return result;
|
||||
}
|
||||
|
||||
// ── Mesh overloads (VDE-021): convert mesh→curve then delegate ──
|
||||
|
||||
BrepModel extrude(const mesh::HalfedgeMesh& profileMesh, const Vector3D& dir) {
|
||||
auto profile = mesh::mesh_boundary_to_curve(profileMesh);
|
||||
if (profile.degree() == 0) return BrepModel(); // degenerate
|
||||
return extrude(profile, dir);
|
||||
}
|
||||
|
||||
BrepModel revolve(const mesh::HalfedgeMesh& profileMesh,
|
||||
const Point3D& origin, const Vector3D& axis, double angle) {
|
||||
auto profile = mesh::mesh_boundary_to_curve(profileMesh);
|
||||
if (profile.degree() == 0) return BrepModel();
|
||||
return revolve(profile, origin, axis, angle);
|
||||
}
|
||||
|
||||
BrepModel sweep(const mesh::HalfedgeMesh& profileMesh,
|
||||
const curves::NurbsCurve& path) {
|
||||
auto profile = mesh::mesh_boundary_to_curve(profileMesh);
|
||||
if (profile.degree() == 0) return BrepModel();
|
||||
return sweep(profile, path);
|
||||
}
|
||||
|
||||
BrepModel loft(const std::vector<mesh::HalfedgeMesh>& profiles) {
|
||||
if (profiles.size() < 2) return BrepModel();
|
||||
std::vector<curves::NurbsCurve> curves;
|
||||
curves.reserve(profiles.size());
|
||||
for (const auto& m : profiles) {
|
||||
auto c = mesh::mesh_boundary_to_curve(m);
|
||||
if (c.degree() == 0) return BrepModel();
|
||||
curves.push_back(std::move(c));
|
||||
}
|
||||
return loft(curves);
|
||||
}
|
||||
|
||||
// ── Fillet ──
|
||||
BrepModel fillet(const BrepModel& body, int edge_id, double radius) {
|
||||
// Validation
|
||||
|
||||
@@ -0,0 +1,621 @@
|
||||
#include "vde/core/cam_mesh.h"
|
||||
#include "vde/curves/nurbs_curve.h"
|
||||
#include "vde/core/aabb.h"
|
||||
#include <cmath>
|
||||
#include <cstdio>
|
||||
#include <algorithm>
|
||||
#include <limits>
|
||||
#include <map>
|
||||
|
||||
#ifndef M_PI
|
||||
#define M_PI 3.14159265358979323846
|
||||
#endif
|
||||
|
||||
namespace vde::core {
|
||||
|
||||
// ── Internal helpers ─────────────────────────────────────────────────────
|
||||
|
||||
namespace {
|
||||
|
||||
/// Format a double to 4 decimal places
|
||||
std::string fmt(double v) {
|
||||
char buf[32];
|
||||
std::snprintf(buf, sizeof(buf), "%.4f", v);
|
||||
return buf;
|
||||
}
|
||||
|
||||
/// 2D cross product
|
||||
inline double cross2d(const Vector2D& a, const Vector2D& b) {
|
||||
return a.x() * b.y() - a.y() * b.x();
|
||||
}
|
||||
|
||||
/// Segment-segment intersection (2D)
|
||||
bool segment_intersect(const Point2D& a1, const Point2D& a2,
|
||||
const Point2D& b1, const Point2D& b2, Point2D& out) {
|
||||
Vector2D da = a2 - a1;
|
||||
Vector2D db = b2 - b1;
|
||||
double cross = cross2d(da, db);
|
||||
if (std::abs(cross) < 1e-12) return false;
|
||||
Vector2D dc = b1 - a1;
|
||||
double t = cross2d(dc, db) / cross;
|
||||
double u = cross2d(dc, da) / cross;
|
||||
if (t >= -1e-12 && t <= 1.0 + 1e-12 && u >= -1e-12 && u <= 1.0 + 1e-12) {
|
||||
out = a1 + t * da;
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
/// Ray-casting point-in-polygon (2D)
|
||||
bool point_in_polygon(const std::vector<Point2D>& poly, const Point2D& p) {
|
||||
int n = static_cast<int>(poly.size());
|
||||
if (n < 3) return false;
|
||||
bool inside = false;
|
||||
for (int i = 0, j = n - 1; i < n; j = i++) {
|
||||
const auto& pi = poly[i];
|
||||
const auto& pj = poly[j];
|
||||
if (((pi.y() > p.y()) != (pj.y() > p.y())) &&
|
||||
(p.x() < (pj.x() - pi.x()) * (p.y() - pi.y()) / (pj.y() - pi.y()) + pi.x())) {
|
||||
inside = !inside;
|
||||
}
|
||||
}
|
||||
return inside;
|
||||
}
|
||||
|
||||
/// Fit a clamped NURBS curve through given control points
|
||||
curves::NurbsCurve fit_clamped(const std::vector<Point3D>& pts) {
|
||||
int n = static_cast<int>(pts.size());
|
||||
if (n < 2) {
|
||||
return curves::NurbsCurve({pts[0], pts[0]}, {0,0,1,1}, {1,1}, 1);
|
||||
}
|
||||
int p = (n <= 2) ? 1 : std::min(3, n - 1);
|
||||
std::vector<double> weights(n, 1.0);
|
||||
std::vector<double> knots(n + p + 1);
|
||||
for (int i = 0; i <= p; ++i) knots[i] = 0.0;
|
||||
for (int i = n; i < n + p + 1; ++i) knots[i] = 1.0;
|
||||
int interior = n - p - 1;
|
||||
if (interior > 0) {
|
||||
for (int i = 0; i <= interior; ++i) {
|
||||
knots[p + i] = static_cast<double>(i) / static_cast<double>(interior + 1);
|
||||
}
|
||||
}
|
||||
return curves::NurbsCurve(pts, std::move(knots), std::move(weights), p);
|
||||
}
|
||||
|
||||
/// Sample a NURBS curve at `count` evenly-spaced parameter values
|
||||
std::vector<Point3D> sample_curve(const curves::NurbsCurve& curve, int count) {
|
||||
std::vector<Point3D> pts;
|
||||
pts.reserve(count);
|
||||
auto [t0, t1] = curve.domain();
|
||||
for (int i = 0; i < count; ++i) {
|
||||
double t = t0 + (t1 - t0) * static_cast<double>(i) / static_cast<double>(count - 1);
|
||||
pts.push_back(curve.evaluate(t));
|
||||
}
|
||||
return pts;
|
||||
}
|
||||
|
||||
/// Rotate a 2D point around origin by angle (radians)
|
||||
Point2D rotate_2d(const Point2D& p, double angle_rad) {
|
||||
double c = std::cos(angle_rad);
|
||||
double s = std::sin(angle_rad);
|
||||
return Point2D(c * p.x() - s * p.y(), s * p.x() + c * p.y());
|
||||
}
|
||||
|
||||
} // anonymous namespace
|
||||
|
||||
// ═══════════════════════════════════════════════════════════════════════════
|
||||
// extract_contour_from_mesh — 截面轮廓提取
|
||||
// ═══════════════════════════════════════════════════════════════════════════
|
||||
|
||||
std::vector<curves::NurbsCurve> extract_contour_from_mesh(
|
||||
const mesh::HalfedgeMesh& mesh,
|
||||
double z_height)
|
||||
{
|
||||
const double kEps = 1e-10;
|
||||
|
||||
// ── Step 1: Collect intersection segments ────────────────────────
|
||||
// Each (p0, p1) represents a segment where a triangular face intersects
|
||||
// the z-plane. A triangle intersecting the plane yields exactly 2 edge-hit
|
||||
// points (general position).
|
||||
struct Seg {
|
||||
Point2D p0, p1;
|
||||
};
|
||||
std::vector<Seg> segs;
|
||||
|
||||
for (size_t fi = 0; fi < mesh.num_faces(); ++fi) {
|
||||
auto fv = mesh.face_vertices(static_cast<int>(fi));
|
||||
if (fv.size() < 3) continue;
|
||||
|
||||
std::vector<Point2D> hits; // 2D intersection points on this face
|
||||
|
||||
for (size_t j = 0; j < fv.size(); ++j) {
|
||||
size_t k = (j + 1) % fv.size();
|
||||
Point3D p0 = mesh.vertex(static_cast<size_t>(fv[j]));
|
||||
Point3D p1 = mesh.vertex(static_cast<size_t>(fv[k]));
|
||||
|
||||
double z0 = p0.z();
|
||||
double z1 = p1.z();
|
||||
|
||||
// Check if edge straddles the z plane
|
||||
if ((z0 > z_height && z1 < z_height) ||
|
||||
(z0 < z_height && z1 > z_height)) {
|
||||
double t = (z_height - z0) / (z1 - z0);
|
||||
if (t >= 0.0 && t <= 1.0) {
|
||||
double x = p0.x() + t * (p1.x() - p0.x());
|
||||
double y = p0.y() + t * (p1.y() - p0.y());
|
||||
hits.emplace_back(x, y);
|
||||
}
|
||||
}
|
||||
// Edge lying exactly on the plane — take the whole edge
|
||||
else if (std::abs(z0 - z_height) < kEps && std::abs(z1 - z_height) < kEps) {
|
||||
hits.emplace_back(p0.x(), p0.y());
|
||||
hits.emplace_back(p1.x(), p1.y());
|
||||
}
|
||||
}
|
||||
|
||||
// A triangle intersecting the plane should give exactly 2 points
|
||||
// (unless the plane passes through a vertex or edge — those are degenerate)
|
||||
if (hits.size() == 2) {
|
||||
segs.push_back({hits[0], hits[1]});
|
||||
} else if (hits.size() > 2) {
|
||||
// Multiple hits: pair them up to form segments
|
||||
// (e.g. plane passes through a vertex)
|
||||
for (size_t a = 0; a + 1 < hits.size(); a += 2) {
|
||||
segs.push_back({hits[a], hits[a + 1]});
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (segs.size() < 3) return {};
|
||||
|
||||
// ── Step 2: Chain segments into closed loops ─────────────────────
|
||||
const double kMergeTol = 1e-8;
|
||||
std::vector<std::vector<Point2D>> loops;
|
||||
|
||||
while (!segs.empty()) {
|
||||
std::vector<Point2D> loop;
|
||||
Seg seed = segs.back();
|
||||
segs.pop_back();
|
||||
|
||||
loop.push_back(seed.p0);
|
||||
Point2D target = seed.p1;
|
||||
|
||||
bool growing = true;
|
||||
while (growing && !segs.empty()) {
|
||||
// Check if we've closed the loop
|
||||
if ((target - loop.front()).norm() < kMergeTol * 10.0) {
|
||||
growing = false;
|
||||
break;
|
||||
}
|
||||
|
||||
growing = false;
|
||||
for (auto it = segs.begin(); it != segs.end(); ++it) {
|
||||
if ((target - it->p0).norm() < kMergeTol) {
|
||||
loop.push_back(it->p0);
|
||||
target = it->p1;
|
||||
segs.erase(it);
|
||||
growing = true;
|
||||
break;
|
||||
}
|
||||
if ((target - it->p1).norm() < kMergeTol) {
|
||||
loop.push_back(it->p1);
|
||||
target = it->p0;
|
||||
segs.erase(it);
|
||||
growing = true;
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Close the loop
|
||||
loop.push_back(loop.front());
|
||||
|
||||
if (loop.size() >= 4) { // at least 3 unique points + closure
|
||||
loops.push_back(std::move(loop));
|
||||
}
|
||||
}
|
||||
|
||||
// ── Step 3: Fit NURBS curves ─────────────────────────────────────
|
||||
std::vector<curves::NurbsCurve> result;
|
||||
result.reserve(loops.size());
|
||||
|
||||
for (const auto& loop : loops) {
|
||||
std::vector<Point3D> pts3d;
|
||||
pts3d.reserve(loop.size());
|
||||
for (const auto& p : loop) {
|
||||
pts3d.emplace_back(p.x(), p.y(), z_height);
|
||||
}
|
||||
result.push_back(fit_clamped(pts3d));
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
// ═══════════════════════════════════════════════════════════════════════════
|
||||
// contour_toolpath (mesh) — 轮廓加工刀路
|
||||
// ═══════════════════════════════════════════════════════════════════════════
|
||||
|
||||
Toolpath contour_toolpath(
|
||||
const mesh::HalfedgeMesh& mesh,
|
||||
double z_height,
|
||||
const Tool& /*tool*/,
|
||||
const ContourParams& params)
|
||||
{
|
||||
Toolpath tp;
|
||||
tp.name = "Contour_Mesh";
|
||||
tp.safe_z = params.safe_z;
|
||||
tp.cut_z = z_height;
|
||||
tp.step_down = params.step_down;
|
||||
|
||||
// Offset the cutting plane by stock_to_leave (cut slightly outside)
|
||||
double effective_z = z_height + params.stock_to_leave;
|
||||
|
||||
auto contours = extract_contour_from_mesh(mesh, effective_z);
|
||||
if (contours.empty()) return tp;
|
||||
|
||||
double effective_step = params.step_down;
|
||||
if (effective_step <= 0.0) effective_step = 1.0;
|
||||
|
||||
// Compute Z range for multi-pass
|
||||
double z_min = std::numeric_limits<double>::max();
|
||||
double z_max = std::numeric_limits<double>::lowest();
|
||||
for (size_t vi = 0; vi < mesh.num_vertices(); ++vi) {
|
||||
auto v = mesh.vertex(static_cast<int>(vi));
|
||||
z_min = std::min(z_min, v.z());
|
||||
z_max = std::max(z_max, v.z());
|
||||
}
|
||||
|
||||
// Cut from safe_z level down to z_height in step_down increments
|
||||
double start_z = z_max;
|
||||
int pass_count = 0;
|
||||
|
||||
// Rapid to safe position
|
||||
tp.segments.push_back({Point3D(0, 0, params.safe_z),
|
||||
Point3D(0, 0, params.safe_z),
|
||||
Point3D::Zero(), PathSegmentType::Rapid});
|
||||
|
||||
// For contouring, we cut at the specified z_height (can be multi-pass)
|
||||
while (start_z > z_height + 1e-9) {
|
||||
double cut_z = std::max(z_height, start_z - effective_step);
|
||||
|
||||
for (size_t ci = 0; ci < contours.size(); ++ci) {
|
||||
auto sampled = sample_curve(contours[ci], 200);
|
||||
if (sampled.size() < 2) continue;
|
||||
|
||||
// First contour of first pass: rapid approach
|
||||
if (pass_count == 0 && ci == 0) {
|
||||
tp.segments.push_back({Point3D(0, 0, params.safe_z),
|
||||
Point3D(sampled[0].x(), sampled[0].y(), params.safe_z),
|
||||
Point3D::Zero(), PathSegmentType::Rapid});
|
||||
|
||||
// Plunge to first cut depth
|
||||
tp.segments.push_back({Point3D(sampled[0].x(), sampled[0].y(), params.safe_z),
|
||||
Point3D(sampled[0].x(), sampled[0].y(), cut_z),
|
||||
Point3D::Zero(), PathSegmentType::Linear,
|
||||
params.feed_rate * 0.5, cut_z});
|
||||
} else {
|
||||
// Move to start of contour at safe Z then plunge
|
||||
tp.segments.push_back({tp.segments.back().end,
|
||||
Point3D(sampled[0].x(), sampled[0].y(), params.safe_z),
|
||||
Point3D::Zero(), PathSegmentType::Rapid});
|
||||
|
||||
tp.segments.push_back({Point3D(sampled[0].x(), sampled[0].y(), params.safe_z),
|
||||
Point3D(sampled[0].x(), sampled[0].y(), cut_z),
|
||||
Point3D::Zero(), PathSegmentType::Linear,
|
||||
params.feed_rate * 0.5, cut_z});
|
||||
}
|
||||
|
||||
// Follow the contour at this Z
|
||||
for (size_t i = 1; i < sampled.size(); ++i) {
|
||||
tp.segments.push_back({sampled[i-1], sampled[i],
|
||||
Point3D::Zero(), PathSegmentType::Linear,
|
||||
params.feed_rate, cut_z});
|
||||
}
|
||||
|
||||
// Retract to safe Z between contours
|
||||
tp.segments.push_back({tp.segments.back().end,
|
||||
Point3D(tp.segments.back().end.x(),
|
||||
tp.segments.back().end.y(), params.safe_z),
|
||||
Point3D::Zero(), PathSegmentType::Rapid});
|
||||
}
|
||||
|
||||
start_z = cut_z;
|
||||
pass_count++;
|
||||
}
|
||||
|
||||
// Final retract
|
||||
if (!tp.segments.empty()) {
|
||||
tp.segments.push_back({tp.segments.back().end,
|
||||
Point3D(0, 0, params.safe_z),
|
||||
Point3D::Zero(), PathSegmentType::Rapid});
|
||||
}
|
||||
|
||||
return tp;
|
||||
}
|
||||
|
||||
// ═══════════════════════════════════════════════════════════════════════════
|
||||
// pocket_toolpath (mesh) — 口袋加工刀路
|
||||
// ═══════════════════════════════════════════════════════════════════════════
|
||||
|
||||
Toolpath pocket_toolpath(
|
||||
const mesh::HalfedgeMesh& mesh,
|
||||
const std::vector<mesh::HalfedgeMesh>& islands,
|
||||
double z_height,
|
||||
const Tool& tool,
|
||||
const PocketParams& params)
|
||||
{
|
||||
Toolpath tp;
|
||||
tp.name = "Pocket_Mesh";
|
||||
tp.safe_z = params.safe_z;
|
||||
tp.cut_z = z_height;
|
||||
tp.step_down = params.step_down;
|
||||
|
||||
// Extract outer boundary as 2D polygon
|
||||
auto boundary_curves = extract_contour_from_mesh(mesh, z_height);
|
||||
if (boundary_curves.empty()) return tp;
|
||||
|
||||
// Use the longest contour as the outer boundary
|
||||
std::vector<Point2D> boundary_poly;
|
||||
{
|
||||
size_t best = 0;
|
||||
double best_len = 0;
|
||||
for (size_t i = 0; i < boundary_curves.size(); ++i) {
|
||||
auto sampled = sample_curve(boundary_curves[i], 200);
|
||||
double len = 0;
|
||||
for (size_t j = 1; j < sampled.size(); ++j) {
|
||||
len += (Vector3D(sampled[j].x() - sampled[j-1].x(),
|
||||
sampled[j].y() - sampled[j-1].y(),
|
||||
sampled[j].z() - sampled[j-1].z())).norm();
|
||||
}
|
||||
if (len > best_len) {
|
||||
best_len = len;
|
||||
best = i;
|
||||
}
|
||||
}
|
||||
auto sampled = sample_curve(boundary_curves[best], 300);
|
||||
boundary_poly.reserve(sampled.size());
|
||||
for (auto& p : sampled) {
|
||||
boundary_poly.emplace_back(p.x(), p.y());
|
||||
}
|
||||
}
|
||||
|
||||
if (boundary_poly.size() < 3) return tp;
|
||||
|
||||
// Extract island polygons
|
||||
std::vector<std::vector<Point2D>> island_polys;
|
||||
for (const auto& island_mesh : islands) {
|
||||
auto island_curves = extract_contour_from_mesh(island_mesh, z_height);
|
||||
for (auto& ic : island_curves) {
|
||||
auto sampled = sample_curve(ic, 200);
|
||||
std::vector<Point2D> ipoly;
|
||||
ipoly.reserve(sampled.size());
|
||||
for (auto& p : sampled) {
|
||||
ipoly.emplace_back(p.x(), p.y());
|
||||
}
|
||||
if (ipoly.size() >= 3) {
|
||||
island_polys.push_back(std::move(ipoly));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Compute spacing
|
||||
double spacing = params.step_over;
|
||||
if (spacing <= 0.0) spacing = tool.diameter * 0.5;
|
||||
|
||||
// Compute bounding box
|
||||
double min_x = std::numeric_limits<double>::max();
|
||||
double max_x = std::numeric_limits<double>::lowest();
|
||||
double min_y = std::numeric_limits<double>::max();
|
||||
double max_y = std::numeric_limits<double>::lowest();
|
||||
for (const auto& p : boundary_poly) {
|
||||
min_x = std::min(min_x, p.x());
|
||||
max_x = std::max(max_x, p.x());
|
||||
min_y = std::min(min_y, p.y());
|
||||
max_y = std::max(max_y, p.y());
|
||||
}
|
||||
|
||||
double expand = std::max(max_x - min_x, max_y - min_y) * 0.1;
|
||||
min_x -= expand;
|
||||
max_x += expand;
|
||||
min_y -= expand;
|
||||
max_y += expand;
|
||||
|
||||
// Rotation angle for zigzag
|
||||
double angle_rad = params.cut_angle * M_PI / 180.0;
|
||||
|
||||
// Determine the scanning direction based on the rotated bounding box
|
||||
// We generate lines perpendicular to the scan direction
|
||||
// For cut_angle=0: horizontal lines (vary Y), for cut_angle=90: vertical lines (vary X)
|
||||
|
||||
// Generate scan lines
|
||||
// Rotate boundary to align with scan direction
|
||||
std::vector<Point2D> rot_boundary;
|
||||
rot_boundary.reserve(boundary_poly.size());
|
||||
for (const auto& p : boundary_poly) {
|
||||
rot_boundary.push_back(rotate_2d(p, -angle_rad));
|
||||
}
|
||||
|
||||
// Also rotate islands
|
||||
std::vector<std::vector<Point2D>> rot_islands;
|
||||
for (const auto& ip : island_polys) {
|
||||
std::vector<Point2D> rip;
|
||||
rip.reserve(ip.size());
|
||||
for (const auto& p : ip) {
|
||||
rip.push_back(rotate_2d(p, -angle_rad));
|
||||
}
|
||||
rot_islands.push_back(std::move(rip));
|
||||
}
|
||||
|
||||
// Compute rotated bounding box
|
||||
double r_min_x = std::numeric_limits<double>::max();
|
||||
double r_max_x = std::numeric_limits<double>::lowest();
|
||||
double r_min_y = std::numeric_limits<double>::max();
|
||||
double r_max_y = std::numeric_limits<double>::lowest();
|
||||
for (const auto& p : rot_boundary) {
|
||||
r_min_x = std::min(r_min_x, p.x());
|
||||
r_max_x = std::max(r_max_x, p.x());
|
||||
r_min_y = std::min(r_min_y, p.y());
|
||||
r_max_y = std::max(r_max_y, p.y());
|
||||
}
|
||||
double r_expand = (r_max_y - r_min_y) * 0.05;
|
||||
r_min_y -= r_expand;
|
||||
r_max_y += r_expand;
|
||||
|
||||
// ── Generate horizontal scan lines in rotated space ─────────────
|
||||
struct CutSeg { Point2D a, b; };
|
||||
std::vector<CutSeg> cut_segs;
|
||||
|
||||
int ns = static_cast<int>(rot_boundary.size());
|
||||
double line_start_x = r_min_x - spacing;
|
||||
double line_end_x = r_max_x + spacing;
|
||||
|
||||
for (double y = r_min_y; y <= r_max_y + spacing * 0.5; y += spacing) {
|
||||
Point2D l_start(line_start_x, y);
|
||||
Point2D l_end(line_end_x, y);
|
||||
|
||||
// Find intersections with rotated boundary
|
||||
std::vector<double> t_hits;
|
||||
for (int i = 0; i < ns; ++i) {
|
||||
int j = (i + 1) % ns;
|
||||
Point2D out;
|
||||
if (segment_intersect(l_start, l_end, rot_boundary[i], rot_boundary[j], out)) {
|
||||
Vector2D dir = l_end - l_start;
|
||||
double dlen = dir.squaredNorm();
|
||||
if (dlen > 1e-12) {
|
||||
double t = ((out - l_start).dot(dir)) / dlen;
|
||||
t_hits.push_back(t);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
std::sort(t_hits.begin(), t_hits.end());
|
||||
t_hits.erase(std::unique(t_hits.begin(), t_hits.end(),
|
||||
[](double a, double b) { return std::abs(a - b) < 1e-9; }),
|
||||
t_hits.end());
|
||||
|
||||
// For each pair of intersections, check if midpoint is inside boundary
|
||||
// and outside all islands
|
||||
for (size_t k = 0; k + 1 < t_hits.size(); k += 2) {
|
||||
double ta = t_hits[k];
|
||||
double tb = t_hits[k + 1];
|
||||
Point2D mid = l_start + (ta + tb) * 0.5 * (l_end - l_start);
|
||||
|
||||
// Must be inside boundary
|
||||
if (!point_in_polygon(rot_boundary, mid)) continue;
|
||||
|
||||
// Must be outside all islands
|
||||
bool inside_island = false;
|
||||
for (const auto& rip : rot_islands) {
|
||||
if (point_in_polygon(rip, mid)) {
|
||||
inside_island = true;
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (inside_island) continue;
|
||||
|
||||
Point2D pa = l_start + ta * (l_end - l_start);
|
||||
Point2D pb = l_start + tb * (l_end - l_start);
|
||||
|
||||
// Rotate back to original space
|
||||
Point2D orig_a = rotate_2d(pa, angle_rad);
|
||||
Point2D orig_b = rotate_2d(pb, angle_rad);
|
||||
cut_segs.push_back({orig_a, orig_b});
|
||||
}
|
||||
}
|
||||
|
||||
// ── Sort segments for efficient movement ───────────────────────
|
||||
// Greedy nearest-neighbour sort
|
||||
if (!cut_segs.empty()) {
|
||||
std::vector<CutSeg> sorted;
|
||||
sorted.reserve(cut_segs.size());
|
||||
sorted.push_back(cut_segs[0]);
|
||||
cut_segs.erase(cut_segs.begin());
|
||||
|
||||
while (!cut_segs.empty()) {
|
||||
const Point2D& last = sorted.back().b;
|
||||
size_t best_i = 0;
|
||||
double best_dist = std::numeric_limits<double>::max();
|
||||
for (size_t i = 0; i < cut_segs.size(); ++i) {
|
||||
double d = (cut_segs[i].a - last).norm();
|
||||
if (d < best_dist) {
|
||||
best_dist = d;
|
||||
best_i = i;
|
||||
}
|
||||
}
|
||||
sorted.push_back(cut_segs[best_i]);
|
||||
cut_segs.erase(cut_segs.begin() + best_i);
|
||||
}
|
||||
cut_segs = std::move(sorted);
|
||||
}
|
||||
|
||||
if (cut_segs.empty()) {
|
||||
tp.segments.push_back({Point3D(0, 0, params.safe_z),
|
||||
Point3D(0, 0, params.safe_z),
|
||||
Point3D::Zero(), PathSegmentType::Rapid});
|
||||
return tp;
|
||||
}
|
||||
|
||||
// ── Build toolpath ─────────────────────────────────────────────
|
||||
// Rapid approach to first point
|
||||
tp.segments.push_back({Point3D(cut_segs[0].a.x(), cut_segs[0].a.y(), params.safe_z),
|
||||
Point3D(cut_segs[0].a.x(), cut_segs[0].a.y(), params.safe_z),
|
||||
Point3D::Zero(), PathSegmentType::Rapid});
|
||||
|
||||
// Plunge
|
||||
tp.segments.push_back({Point3D(cut_segs[0].a.x(), cut_segs[0].a.y(), params.safe_z),
|
||||
Point3D(cut_segs[0].a.x(), cut_segs[0].a.y(), z_height),
|
||||
Point3D::Zero(), PathSegmentType::Linear,
|
||||
params.feed_rate * 0.5, z_height});
|
||||
|
||||
for (size_t i = 0; i < cut_segs.size(); ++i) {
|
||||
const auto& seg = cut_segs[i];
|
||||
|
||||
// Cut the segment
|
||||
tp.segments.push_back({Point3D(seg.a.x(), seg.a.y(), z_height),
|
||||
Point3D(seg.b.x(), seg.b.y(), z_height),
|
||||
Point3D::Zero(), PathSegmentType::Linear,
|
||||
params.feed_rate, z_height});
|
||||
|
||||
// Link to next segment
|
||||
if (i + 1 < cut_segs.size()) {
|
||||
const Point2D& next = cut_segs[i + 1].a;
|
||||
double dist = (next - seg.b).norm();
|
||||
if (dist < 5.0 * spacing) {
|
||||
// Close enough: direct cut move
|
||||
tp.segments.push_back({Point3D(seg.b.x(), seg.b.y(), z_height),
|
||||
Point3D(next.x(), next.y(), z_height),
|
||||
Point3D::Zero(), PathSegmentType::Linear,
|
||||
params.feed_rate * 1.5, z_height});
|
||||
} else {
|
||||
// Too far: rapid retract + reposition + plunge
|
||||
tp.segments.push_back({Point3D(seg.b.x(), seg.b.y(), z_height),
|
||||
Point3D(seg.b.x(), seg.b.y(), params.safe_z),
|
||||
Point3D::Zero(), PathSegmentType::Rapid});
|
||||
|
||||
tp.segments.push_back({Point3D(seg.b.x(), seg.b.y(), params.safe_z),
|
||||
Point3D(next.x(), next.y(), params.safe_z),
|
||||
Point3D::Zero(), PathSegmentType::Rapid});
|
||||
|
||||
tp.segments.push_back({Point3D(next.x(), next.y(), params.safe_z),
|
||||
Point3D(next.x(), next.y(), z_height),
|
||||
Point3D::Zero(), PathSegmentType::Linear,
|
||||
params.feed_rate * 0.5, z_height});
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Retract
|
||||
tp.segments.push_back({tp.segments.back().end,
|
||||
Point3D(tp.segments.back().end.x(),
|
||||
tp.segments.back().end.y(), params.safe_z),
|
||||
Point3D::Zero(), PathSegmentType::Rapid});
|
||||
|
||||
tp.segments.push_back({Point3D(tp.segments.back().end.x(),
|
||||
tp.segments.back().end.y(), params.safe_z),
|
||||
Point3D(0, 0, params.safe_z),
|
||||
Point3D::Zero(), PathSegmentType::Rapid});
|
||||
|
||||
return tp;
|
||||
}
|
||||
|
||||
} // namespace vde::core
|
||||
@@ -0,0 +1,480 @@
|
||||
#include "vde/mesh/mesh_to_curve.h"
|
||||
#include <algorithm>
|
||||
#include <cmath>
|
||||
#include <map>
|
||||
#include <set>
|
||||
#include <unordered_map>
|
||||
#include <cassert>
|
||||
|
||||
namespace vde::mesh {
|
||||
using core::Point3D;
|
||||
using core::Vector3D;
|
||||
|
||||
namespace {
|
||||
|
||||
// ── Helper: chord-length parameterization of polyline ──
|
||||
std::vector<double> chord_length_params(const std::vector<Point3D>& pts) {
|
||||
std::vector<double> t(pts.size(), 0.0);
|
||||
double total = 0.0;
|
||||
for (size_t i = 1; i < pts.size(); ++i)
|
||||
total += (pts[i] - pts[i-1]).norm();
|
||||
if (total < 1e-15) {
|
||||
for (size_t i = 0; i < pts.size(); ++i)
|
||||
t[i] = static_cast<double>(i) / (pts.size() - 1);
|
||||
return t;
|
||||
}
|
||||
for (size_t i = 1; i < pts.size(); ++i)
|
||||
t[i] = t[i-1] + (pts[i] - pts[i-1]).norm() / total;
|
||||
return t;
|
||||
}
|
||||
|
||||
// ── Helper: uniform knot vector for degree p, n control points ──
|
||||
std::vector<double> make_uniform_knots(int n, int p) {
|
||||
int m = n + p + 1;
|
||||
std::vector<double> knots(m, 0.0);
|
||||
for (int i = 0; i < p + 1; ++i) knots[i] = 0.0;
|
||||
for (int i = n; i < m; ++i) knots[i] = 1.0;
|
||||
int inner = m - 2 * (p + 1);
|
||||
for (int i = 0; i < inner; ++i)
|
||||
knots[p + 1 + i] = static_cast<double>(i + 1) / (inner + 1);
|
||||
return knots;
|
||||
}
|
||||
|
||||
// ── B-spline basis function N_{i,p}(t) ──
|
||||
double basis_function(int i, int p, const std::vector<double>& knots, double t) {
|
||||
if (p == 0) {
|
||||
return (t >= knots[i] && t < knots[i+1]) ||
|
||||
(t >= knots[i] && t <= knots[i+1] &&
|
||||
i + 1 == static_cast<int>(knots.size()) - p - 1) ? 1.0 : 0.0;
|
||||
}
|
||||
double left = 0.0, right = 0.0;
|
||||
double denom1 = knots[i+p] - knots[i];
|
||||
double denom2 = knots[i+p+1] - knots[i+1];
|
||||
if (denom1 > 1e-15)
|
||||
left = (t - knots[i]) / denom1 * basis_function(i, p-1, knots, t);
|
||||
if (denom2 > 1e-15)
|
||||
right = (knots[i+p+1] - t) / denom2 * basis_function(i+1, p-1, knots, t);
|
||||
return left + right;
|
||||
}
|
||||
|
||||
// ── Least-squares B-spline fit ──
|
||||
// Given m sample points with parameters t, compute n control points (degree=p)
|
||||
// Solve: N^T N CP = N^T P (m×n linear system)
|
||||
curves::NurbsCurve ls_fit_bspline(const std::vector<Point3D>& samples,
|
||||
const std::vector<double>& params,
|
||||
int degree, int num_ctrl) {
|
||||
int m = static_cast<int>(samples.size());
|
||||
if (m < 2 || num_ctrl < degree + 1) {
|
||||
// Degenerate: return empty curve
|
||||
return curves::NurbsCurve();
|
||||
}
|
||||
int n = std::max(degree + 1, num_ctrl);
|
||||
n = std::min(n, m); // Can't have more ctrl points than samples
|
||||
|
||||
auto knots = make_uniform_knots(n, degree);
|
||||
|
||||
// Build normal equations: A^T A x = A^T b
|
||||
// A_ij = N_{j,degree}(t_i)
|
||||
// For points, we solve 3 independent systems (x, y, z)
|
||||
std::vector<std::vector<double>> ATA(n, std::vector<double>(n, 0.0));
|
||||
std::vector<Point3D> ATb(n, Point3D(0, 0, 0));
|
||||
|
||||
for (int i = 0; i < m; ++i) {
|
||||
double t = params[i];
|
||||
// Evaluate all non-zero basis functions at t
|
||||
std::vector<double> N(n, 0.0);
|
||||
for (int j = 0; j < n; ++j)
|
||||
N[j] = basis_function(j, degree, knots, t);
|
||||
|
||||
for (int r = 0; r < n; ++r) {
|
||||
if (std::abs(N[r]) < 1e-15) continue;
|
||||
for (int c = 0; c < n; ++c) {
|
||||
if (std::abs(N[c]) < 1e-15) continue;
|
||||
ATA[r][c] += N[r] * N[c];
|
||||
}
|
||||
ATb[r] = ATb[r] + N[r] * samples[i];
|
||||
}
|
||||
}
|
||||
|
||||
// Gaussian elimination for each coordinate
|
||||
std::vector<double> x(n), y(n), z(n);
|
||||
auto solve_system = [&](std::vector<double>& b) {
|
||||
auto mat = ATA;
|
||||
// Forward elimination with partial pivoting
|
||||
for (int k = 0; k < n; ++k) {
|
||||
int max_row = k;
|
||||
double max_val = std::abs(mat[k][k]);
|
||||
for (int r = k + 1; r < n; ++r) {
|
||||
if (std::abs(mat[r][k]) > max_val) {
|
||||
max_val = std::abs(mat[r][k]);
|
||||
max_row = r;
|
||||
}
|
||||
}
|
||||
if (max_val < 1e-15) continue;
|
||||
if (max_row != k) {
|
||||
std::swap(mat[k], mat[max_row]);
|
||||
std::swap(b[k], b[max_row]);
|
||||
}
|
||||
double pivot = mat[k][k];
|
||||
for (int r = k + 1; r < n; ++r) {
|
||||
double factor = mat[r][k] / pivot;
|
||||
for (int c = k; c < n; ++c)
|
||||
mat[r][c] -= factor * mat[k][c];
|
||||
b[r] -= factor * b[k];
|
||||
}
|
||||
}
|
||||
// Back substitution
|
||||
for (int k = n - 1; k >= 0; --k) {
|
||||
double sum = b[k];
|
||||
for (int c = k + 1; c < n; ++c)
|
||||
sum -= mat[k][c] * b[c];
|
||||
b[k] = (std::abs(mat[k][k]) > 1e-15) ? sum / mat[k][k] : 0.0;
|
||||
}
|
||||
};
|
||||
|
||||
std::vector<double> bx(n), by(n), bz(n);
|
||||
for (int i = 0; i < n; ++i) {
|
||||
bx[i] = ATb[i].x();
|
||||
by[i] = ATb[i].y();
|
||||
bz[i] = ATb[i].z();
|
||||
}
|
||||
solve_system(bx);
|
||||
solve_system(by);
|
||||
solve_system(bz);
|
||||
|
||||
std::vector<Point3D> cps(n);
|
||||
for (int i = 0; i < n; ++i)
|
||||
cps[i] = Point3D(bx[i], by[i], bz[i]);
|
||||
|
||||
// For closed curves, wrap first 'degree' ctrl points
|
||||
// to ensure C0 continuity at the seam
|
||||
for (int i = 0; i < degree && i < n; ++i)
|
||||
cps.push_back(cps[i]);
|
||||
|
||||
std::vector<double> weights(cps.size(), 1.0);
|
||||
return curves::NurbsCurve(cps, make_uniform_knots(static_cast<int>(cps.size()), degree),
|
||||
weights, degree);
|
||||
}
|
||||
|
||||
// ── Find boundary edges by counting undirected edge occurrences across faces ──
|
||||
// Since add_face never sets opposite_index, all edges appear alone. Count each
|
||||
// undirected edge across all faces; those appearing exactly once are boundary edges.
|
||||
std::vector<std::pair<int,int>> find_boundary_edges(const HalfedgeMesh& mesh) {
|
||||
std::map<std::pair<int,int>, int> edge_count;
|
||||
// Also record one face-side direction for each edge so we can orient the boundary
|
||||
std::map<std::pair<int,int>, std::pair<int,int>> edge_dir; // undirected key -> face-winding direction
|
||||
for (size_t fi = 0; fi < mesh.num_faces(); ++fi) {
|
||||
auto fv = mesh.face_vertices(static_cast<int>(fi));
|
||||
int n = static_cast<int>(fv.size());
|
||||
for (int i = 0; i < n; ++i) {
|
||||
int v0 = fv[i];
|
||||
int v1 = fv[(i + 1) % n];
|
||||
auto key = std::make_pair(std::min(v0, v1), std::max(v0, v1));
|
||||
edge_count[key]++;
|
||||
if (edge_count[key] == 1)
|
||||
edge_dir[key] = std::make_pair(v0, v1); // face winding direction
|
||||
}
|
||||
}
|
||||
|
||||
std::vector<std::pair<int,int>> result;
|
||||
for (const auto& [key, cnt] : edge_count) {
|
||||
if (cnt == 1) {
|
||||
// Boundary edge: the boundary direction is opposite to face winding
|
||||
auto [fv0, fv1] = edge_dir[key];
|
||||
result.emplace_back(fv1, fv0); // reverse for boundary loop direction
|
||||
}
|
||||
}
|
||||
return result;
|
||||
}
|
||||
|
||||
// ── Trace boundary loops from adjacency map ──
|
||||
std::vector<std::vector<Point3D>> trace_boundary_loops(
|
||||
const HalfedgeMesh& mesh,
|
||||
const std::vector<std::pair<int,int>>& be)
|
||||
{
|
||||
// Build adjacency: vertex -> list of adjacent boundary vertices
|
||||
std::map<int, std::vector<int>> adj;
|
||||
for (const auto& [v0, v1] : be) {
|
||||
adj[v0].push_back(v1);
|
||||
adj[v1].push_back(v0); // both directions for tracing
|
||||
}
|
||||
|
||||
std::vector<std::vector<Point3D>> loops;
|
||||
std::set<int> visited_verts;
|
||||
|
||||
for (const auto& [start, neighbors] : adj) {
|
||||
if (visited_verts.count(start)) continue;
|
||||
if (neighbors.size() != 2) continue; // regular boundary vertex has degree 2 in boundary graph
|
||||
|
||||
std::vector<int> loop_verts;
|
||||
int cur = start;
|
||||
int prev = -1;
|
||||
bool closed = false;
|
||||
|
||||
while (!visited_verts.count(cur)) {
|
||||
visited_verts.insert(cur);
|
||||
loop_verts.push_back(cur);
|
||||
|
||||
auto it = adj.find(cur);
|
||||
if (it == adj.end()) break;
|
||||
|
||||
// Find the next unvisited neighbor (not the one we came from)
|
||||
int next = -1;
|
||||
for (int nv : it->second) {
|
||||
if (nv != prev && (!visited_verts.count(nv) || nv == start)) {
|
||||
next = nv;
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (next < 0) break;
|
||||
if (next == start) { closed = true; break; }
|
||||
prev = cur;
|
||||
cur = next;
|
||||
}
|
||||
|
||||
if (closed && loop_verts.size() >= 3) {
|
||||
std::vector<Point3D> pts;
|
||||
for (int vi : loop_verts)
|
||||
pts.push_back(mesh.vertex(static_cast<size_t>(vi)));
|
||||
// Don't add closing duplicate — it would create a singular LS system
|
||||
loops.push_back(std::move(pts));
|
||||
}
|
||||
}
|
||||
return loops;
|
||||
}
|
||||
|
||||
} // namespace
|
||||
|
||||
// ── Public API ────────────────────────────────────────
|
||||
|
||||
curves::NurbsCurve mesh_boundary_to_curve(const HalfedgeMesh& mesh) {
|
||||
auto be = find_boundary_edges(mesh);
|
||||
if (be.empty()) return curves::NurbsCurve();
|
||||
|
||||
auto loops = trace_boundary_loops(mesh, be);
|
||||
if (loops.empty()) return curves::NurbsCurve();
|
||||
|
||||
// Pick the longest loop
|
||||
size_t best = 0;
|
||||
for (size_t i = 1; i < loops.size(); ++i)
|
||||
if (loops[i].size() > loops[best].size())
|
||||
best = i;
|
||||
|
||||
const auto& pts = loops[best];
|
||||
int n_pts = static_cast<int>(pts.size());
|
||||
if (n_pts < 3) {
|
||||
return curves::NurbsCurve();
|
||||
}
|
||||
|
||||
// Upsample if too few points (need at least degree+1 for LS fit)
|
||||
std::vector<Point3D> sampled;
|
||||
if (n_pts < 4) {
|
||||
// Insert midpoints between every pair of vertices
|
||||
sampled.push_back(pts[0]);
|
||||
for (int i = 0; i < n_pts; ++i) {
|
||||
int j = (i + 1) % n_pts;
|
||||
sampled.push_back((pts[i] + pts[j]) * 0.5);
|
||||
sampled.push_back(pts[j]);
|
||||
}
|
||||
} else if (n_pts <= 64) {
|
||||
sampled = pts;
|
||||
} else {
|
||||
int step = n_pts / 64;
|
||||
for (int i = 0; i < 64; ++i)
|
||||
sampled.push_back(pts[i * step]);
|
||||
sampled.push_back(pts[0]); // close
|
||||
}
|
||||
|
||||
auto params = chord_length_params(sampled);
|
||||
// For a closed loop, degree 3 with ctrl_pts = max(4, sampled/2)
|
||||
int num_ctrl = std::max(4, static_cast<int>(sampled.size()) / 2);
|
||||
return ls_fit_bspline(sampled, params, 3, num_ctrl);
|
||||
}
|
||||
|
||||
std::vector<curves::NurbsCurve> extract_profiles_from_mesh(
|
||||
const HalfedgeMesh& mesh, const Vector3D& projection_axis)
|
||||
{
|
||||
auto be = find_boundary_edges(mesh);
|
||||
if (be.empty()) return {};
|
||||
|
||||
auto loops = trace_boundary_loops(mesh, be);
|
||||
std::vector<curves::NurbsCurve> results;
|
||||
|
||||
// Normalize projection axis
|
||||
Vector3D axis = projection_axis.normalized();
|
||||
|
||||
for (auto& pts : loops) {
|
||||
if (pts.size() < 4) continue;
|
||||
|
||||
// Project points onto the plane perpendicular to axis
|
||||
std::vector<Point3D> projected;
|
||||
for (auto& p : pts) {
|
||||
double d = p.dot(axis);
|
||||
projected.push_back(p - d * axis);
|
||||
}
|
||||
|
||||
// Subsample if needed
|
||||
std::vector<Point3D> sampled;
|
||||
int n_pts = static_cast<int>(projected.size());
|
||||
if (n_pts <= 64) {
|
||||
sampled = projected;
|
||||
} else {
|
||||
int step = n_pts / 64;
|
||||
for (int i = 0; i < 64; ++i)
|
||||
sampled.push_back(projected[i * step]);
|
||||
sampled.push_back(projected[0]);
|
||||
}
|
||||
|
||||
auto params = chord_length_params(sampled);
|
||||
int num_ctrl = std::max(4, static_cast<int>(sampled.size()) / 2);
|
||||
results.push_back(ls_fit_bspline(sampled, params, 3, num_ctrl));
|
||||
}
|
||||
return results;
|
||||
}
|
||||
|
||||
std::vector<curves::NurbsCurve> mesh_contour_to_curves(
|
||||
const HalfedgeMesh& mesh, double z_height)
|
||||
{
|
||||
// Collect all edge intersections with z=z_height by iterating faces
|
||||
// Store unique intersection points keyed by their position
|
||||
struct ContourPoint {
|
||||
Point3D pt;
|
||||
int face_idx;
|
||||
int vertex_a; // edge endpoint vertex indices (for dedup)
|
||||
int vertex_b;
|
||||
};
|
||||
|
||||
struct PtKey {
|
||||
double x, y, z;
|
||||
bool operator<(const PtKey& o) const {
|
||||
if (std::abs(x - o.x) > 1e-9) return x < o.x;
|
||||
if (std::abs(y - o.y) > 1e-9) return y < o.y;
|
||||
if (std::abs(z - o.z) > 1e-9) return z < o.z;
|
||||
return false;
|
||||
}
|
||||
};
|
||||
|
||||
std::map<PtKey, ContourPoint> unique_pts;
|
||||
std::map<int, std::vector<PtKey>> face_to_pts; // face_idx -> contour points in this face
|
||||
|
||||
// Iterate faces, find edges crossing z=z_height
|
||||
for (size_t fi = 0; fi < mesh.num_faces(); ++fi) {
|
||||
auto fv = mesh.face_vertices(static_cast<int>(fi));
|
||||
int n = static_cast<int>(fv.size());
|
||||
for (int i = 0; i < n; ++i) {
|
||||
int v0 = fv[i];
|
||||
int v1 = fv[(i + 1) % n];
|
||||
double z0 = mesh.vertex(static_cast<size_t>(v0)).z();
|
||||
double z1 = mesh.vertex(static_cast<size_t>(v1)).z();
|
||||
|
||||
if ((z0 <= z_height && z1 >= z_height) ||
|
||||
(z0 >= z_height && z1 <= z_height)) {
|
||||
if (std::abs(z1 - z0) < 1e-15) continue;
|
||||
double t = (z_height - z0) / (z1 - z0);
|
||||
Point3D pt = mesh.vertex(static_cast<size_t>(v0)) +
|
||||
t * (mesh.vertex(static_cast<size_t>(v1)) -
|
||||
mesh.vertex(static_cast<size_t>(v0)));
|
||||
PtKey key{pt.x(), pt.y(), pt.z()};
|
||||
if (unique_pts.find(key) == unique_pts.end()) {
|
||||
unique_pts[key] = {pt, static_cast<int>(fi), v0, v1};
|
||||
}
|
||||
face_to_pts[static_cast<int>(fi)].push_back(key);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (unique_pts.empty()) return {};
|
||||
|
||||
// Build adjacency: connect intersection points within each face
|
||||
struct PtCmp {
|
||||
bool operator()(const Point3D& a, const Point3D& b) const {
|
||||
if (a.x() != b.x()) return a.x() < b.x();
|
||||
if (a.y() != b.y()) return a.y() < b.y();
|
||||
return a.z() < b.z();
|
||||
}
|
||||
};
|
||||
std::map<Point3D, std::vector<Point3D>, PtCmp> pt_adj;
|
||||
|
||||
for (auto& [fi, keys] : face_to_pts) {
|
||||
if (keys.size() < 2) continue;
|
||||
// Connect consecutive points in this face
|
||||
for (size_t i = 0; i + 1 < keys.size(); ++i) {
|
||||
auto& p0 = unique_pts[keys[i]].pt;
|
||||
auto& p1 = unique_pts[keys[i+1]].pt;
|
||||
pt_adj[p0].push_back(p1);
|
||||
pt_adj[p1].push_back(p0);
|
||||
}
|
||||
if (keys.size() > 2) {
|
||||
auto& p0 = unique_pts[keys[0]].pt;
|
||||
auto& pn = unique_pts[keys.back()].pt;
|
||||
pt_adj[p0].push_back(pn);
|
||||
pt_adj[pn].push_back(p0);
|
||||
}
|
||||
}
|
||||
|
||||
// Now trace connected components using the adjacency
|
||||
std::set<Point3D, PtCmp> visited;
|
||||
|
||||
std::vector<std::vector<Point3D>> components;
|
||||
|
||||
for (auto& [pt, neighbors] : pt_adj) {
|
||||
if (visited.count(pt)) continue;
|
||||
if (neighbors.empty()) continue;
|
||||
|
||||
std::vector<Point3D> comp;
|
||||
Point3D cur = pt;
|
||||
Point3D prev_pt = pt; // arbitrary initial
|
||||
while (!visited.count(cur)) {
|
||||
visited.insert(cur);
|
||||
comp.push_back(cur);
|
||||
auto it = pt_adj.find(cur);
|
||||
if (it == pt_adj.end()) break;
|
||||
|
||||
// Find an unvisited neighbor (not the one we came from)
|
||||
Point3D next;
|
||||
bool found = false;
|
||||
for (auto& n : it->second) {
|
||||
// Skip if it's the previous point (unless we're wrapping around)
|
||||
if ((n - prev_pt).norm() < 1e-9) continue;
|
||||
if (!visited.count(n)) {
|
||||
next = n;
|
||||
found = true;
|
||||
break;
|
||||
}
|
||||
// Wrap: if we're back at the start and this is the start point
|
||||
if (comp.size() > 1 && (n - comp[0]).norm() < 1e-9) {
|
||||
next = n;
|
||||
found = true;
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (!found) break;
|
||||
prev_pt = cur;
|
||||
cur = next;
|
||||
}
|
||||
if (comp.size() >= 3) {
|
||||
// Don't add closing duplicate — LS fitting handles closure internally
|
||||
components.push_back(std::move(comp));
|
||||
}
|
||||
}
|
||||
|
||||
std::vector<curves::NurbsCurve> results;
|
||||
for (auto& comp : components) {
|
||||
if (comp.size() < 4) continue;
|
||||
auto sampled = comp;
|
||||
if (sampled.size() > 64) {
|
||||
std::vector<Point3D> sub;
|
||||
int step = static_cast<int>(sampled.size()) / 64;
|
||||
for (int i = 0; i < 64; ++i)
|
||||
sub.push_back(sampled[i * step]);
|
||||
sub.push_back(sampled[0]);
|
||||
sampled = sub;
|
||||
}
|
||||
auto params = chord_length_params(sampled);
|
||||
int num_ctrl = std::max(4, static_cast<int>(sampled.size()) / 2);
|
||||
results.push_back(ls_fit_bspline(sampled, params, 3, num_ctrl));
|
||||
}
|
||||
return results;
|
||||
}
|
||||
|
||||
} // namespace vde::mesh
|
||||
@@ -4,6 +4,11 @@
|
||||
|
||||
using namespace vde::brep;
|
||||
using namespace vde::core;
|
||||
using namespace vde::mesh;
|
||||
|
||||
// ═══════════════════════════════════════════════
|
||||
// 已有测试（VDE-022 / Assembly 基础）
|
||||
// ═══════════════════════════════════════════════
|
||||
|
||||
TEST(AssemblyTest, CreateEmpty) {
|
||||
Assembly assy("test");
|
||||
@@ -21,11 +26,11 @@ TEST(AssemblyTest, AddPart) {
|
||||
|
||||
TEST(AssemblyTest, NestedHierarchy) {
|
||||
Assembly assy("robot");
|
||||
auto* base = assy.root.add_part("base", make_box(10, 5, 2));
|
||||
assy.root.add_part("base", make_box(10, 5, 2));
|
||||
auto* arm = assy.root.add_subassembly("arm");
|
||||
arm->add_part("seg1", make_cylinder(1, 8));
|
||||
arm->add_part("seg2", make_cylinder(1, 6));
|
||||
|
||||
|
||||
EXPECT_EQ(assy.part_count(), 3u);
|
||||
EXPECT_EQ(assy.node_count(), 5u); // root + arm + seg1 + seg2
|
||||
}
|
||||
@@ -33,7 +38,7 @@ TEST(AssemblyTest, NestedHierarchy) {
|
||||
TEST(AssemblyTest, VisitPartsWithTransform) {
|
||||
Assembly assy("test");
|
||||
assy.root.add_part("p1", make_box(1, 1, 1));
|
||||
|
||||
|
||||
size_t visited = 0;
|
||||
assy.visit_parts([&visited](const std::string& name, const BrepModel&,
|
||||
const Transform3D& xform) {
|
||||
@@ -43,3 +48,151 @@ TEST(AssemblyTest, VisitPartsWithTransform) {
|
||||
});
|
||||
EXPECT_EQ(visited, 1u);
|
||||
}
|
||||
|
||||
// ═══════════════════════════════════════════════
|
||||
// VDE-025: MeshData→Assembly 批量构建 API 测试
|
||||
// ═══════════════════════════════════════════════
|
||||
|
||||
/// 辅助：创建一个简单的三角网格（四面体）
|
||||
static HalfedgeMesh make_tetrahedron_mesh() {
|
||||
HalfedgeMesh mesh;
|
||||
// 四面体顶点
|
||||
int v0 = mesh.add_vertex(Point3D(0, 0, 0));
|
||||
int v1 = mesh.add_vertex(Point3D(1, 0, 0));
|
||||
int v2 = mesh.add_vertex(Point3D(0.5, 0.866, 0));
|
||||
int v3 = mesh.add_vertex(Point3D(0.5, 0.289, 0.816));
|
||||
// 四个三角面
|
||||
mesh.add_face({v0, v1, v2}); // 底面
|
||||
mesh.add_face({v0, v3, v1});
|
||||
mesh.add_face({v1, v3, v2});
|
||||
mesh.add_face({v2, v3, v0});
|
||||
return mesh;
|
||||
}
|
||||
|
||||
/// 辅助：创建一个简单的四边形三角网格（两个三角形组成正方形）
|
||||
static HalfedgeMesh make_square_mesh() {
|
||||
HalfedgeMesh mesh;
|
||||
int v0 = mesh.add_vertex(Point3D(0, 0, 0));
|
||||
int v1 = mesh.add_vertex(Point3D(1, 0, 0));
|
||||
int v2 = mesh.add_vertex(Point3D(1, 1, 0));
|
||||
int v3 = mesh.add_vertex(Point3D(0, 1, 0));
|
||||
mesh.add_face({v0, v1, v2});
|
||||
mesh.add_face({v0, v2, v3});
|
||||
return mesh;
|
||||
}
|
||||
|
||||
// ── Test 1: mesh_to_brep_model 基本转换 ──
|
||||
TEST(AssemblyMeshTest, MeshToBrepModelBasic) {
|
||||
auto mesh = make_square_mesh();
|
||||
BrepModel model = mesh_to_brep_model(mesh);
|
||||
|
||||
EXPECT_EQ(model.num_faces(), 2u);
|
||||
EXPECT_GT(model.num_vertices(), 0u);
|
||||
EXPECT_GT(model.num_edges(), 0u);
|
||||
EXPECT_EQ(model.num_bodies(), 1u);
|
||||
EXPECT_TRUE(model.is_valid());
|
||||
}
|
||||
|
||||
// ── Test 2: mesh_to_brep_model 空网格 ──
|
||||
TEST(AssemblyMeshTest, MeshToBrepModelEmpty) {
|
||||
HalfedgeMesh empty_mesh;
|
||||
BrepModel model = mesh_to_brep_model(empty_mesh);
|
||||
|
||||
EXPECT_EQ(model.num_faces(), 0u);
|
||||
EXPECT_EQ(model.num_vertices(), 0u);
|
||||
EXPECT_EQ(model.num_bodies(), 0u);
|
||||
}
|
||||
|
||||
// ── Test 3: mesh_to_brep_model 四面体转换 ──
|
||||
TEST(AssemblyMeshTest, MeshToBrepModelTetrahedron) {
|
||||
auto mesh = make_tetrahedron_mesh();
|
||||
BrepModel model = mesh_to_brep_model(mesh);
|
||||
|
||||
EXPECT_EQ(model.num_faces(), 4u);
|
||||
EXPECT_EQ(model.num_bodies(), 1u);
|
||||
|
||||
// 验证包围盒合理
|
||||
auto bb = model.bounds();
|
||||
EXPECT_GT(bb.extent().norm(), 0.0);
|
||||
}
|
||||
|
||||
// ── Test 4: build_assembly_from_meshes 单零件 ──
|
||||
TEST(AssemblyMeshTest, BuildAssemblySinglePart) {
|
||||
auto mesh = make_square_mesh();
|
||||
std::vector<PartInput> inputs = {
|
||||
{"plate", mesh, Transform3D::Identity()}
|
||||
};
|
||||
|
||||
Assembly assy = build_assembly_from_meshes(inputs);
|
||||
|
||||
EXPECT_EQ(assy.name, "mesh_assembly");
|
||||
EXPECT_EQ(assy.part_count(), 1u);
|
||||
EXPECT_EQ(assy.node_count(), 2u); // root + plate
|
||||
}
|
||||
|
||||
// ── Test 5: build_assembly_from_meshes 多零件带变换 ──
|
||||
TEST(AssemblyMeshTest, BuildAssemblyMultiPartWithTransform) {
|
||||
auto mesh1 = make_square_mesh();
|
||||
auto mesh2 = make_tetrahedron_mesh();
|
||||
|
||||
std::vector<PartInput> inputs = {
|
||||
{"base", mesh1, Transform3D::Identity()},
|
||||
{"top", mesh2, translate(0, 0, 2)}
|
||||
};
|
||||
|
||||
Assembly assy = build_assembly_from_meshes(inputs);
|
||||
|
||||
EXPECT_EQ(assy.part_count(), 2u);
|
||||
EXPECT_EQ(assy.node_count(), 3u); // root + base + top
|
||||
|
||||
// 验证变换被正确传递
|
||||
size_t visited = 0;
|
||||
assy.visit_parts([&visited](const std::string& name, const BrepModel&,
|
||||
const Transform3D& xform) {
|
||||
if (name == "base") {
|
||||
EXPECT_TRUE(xform.isApprox(Transform3D::Identity()));
|
||||
} else if (name == "top") {
|
||||
EXPECT_NEAR(xform.translation().z(), 2.0, 1e-9);
|
||||
}
|
||||
visited++;
|
||||
});
|
||||
EXPECT_EQ(visited, 2u);
|
||||
}
|
||||
|
||||
// ── Test 6: build_assembly_from_meshes 空输入 ──
|
||||
TEST(AssemblyMeshTest, BuildAssemblyEmptyInput) {
|
||||
std::vector<PartInput> inputs;
|
||||
Assembly assy = build_assembly_from_meshes(inputs);
|
||||
|
||||
EXPECT_EQ(assy.name, "mesh_assembly");
|
||||
EXPECT_EQ(assy.part_count(), 0u);
|
||||
EXPECT_EQ(assy.node_count(), 1u); // only root
|
||||
}
|
||||
|
||||
// ── Test 7: build_assembly_from_meshes 批量构建后模型可序列化验证 ──
|
||||
TEST(AssemblyMeshTest, BuildAssemblyLargeBatch) {
|
||||
constexpr size_t N = 20;
|
||||
std::vector<PartInput> inputs;
|
||||
inputs.reserve(N);
|
||||
|
||||
for (size_t i = 0; i < N; ++i) {
|
||||
auto mesh = make_square_mesh();
|
||||
inputs.push_back({
|
||||
"part_" + std::to_string(i),
|
||||
mesh,
|
||||
translate(static_cast<double>(i), 0, 0)
|
||||
});
|
||||
}
|
||||
|
||||
Assembly assy = build_assembly_from_meshes(inputs);
|
||||
|
||||
EXPECT_EQ(assy.part_count(), N);
|
||||
EXPECT_EQ(assy.node_count(), N + 1); // root + N parts
|
||||
|
||||
// 验证每个零件都有有效的模型
|
||||
assy.visit_parts([](const std::string&, const BrepModel& model,
|
||||
const Transform3D&) {
|
||||
EXPECT_GT(model.num_faces(), 0u);
|
||||
EXPECT_TRUE(model.is_valid());
|
||||
});
|
||||
}
|
||||
|
||||
@@ -15,3 +15,4 @@ add_vde_test(test_concurrent)
|
||||
add_vde_test(test_transaction)
|
||||
add_vde_test(test_version)
|
||||
add_vde_test(test_license)
|
||||
add_vde_test(test_cam_mesh)
|
||||
|
||||
@@ -0,0 +1,331 @@
|
||||
#include <gtest/gtest.h>
|
||||
#include "vde/core/cam_mesh.h"
|
||||
#include "vde/core/cam_strategies.h"
|
||||
#include "vde/curves/nurbs_curve.h"
|
||||
#include "vde/mesh/halfedge_mesh.h"
|
||||
#include "vde/core/point.h"
|
||||
#include <cmath>
|
||||
#include <vector>
|
||||
|
||||
using namespace vde::core;
|
||||
using namespace vde::mesh;
|
||||
using namespace vde::curves;
|
||||
|
||||
// ===========================================================================
|
||||
// Test helpers
|
||||
// ===========================================================================
|
||||
|
||||
/// Build a unit cube halfedge-mesh centred at (0,0,0) with given half-size
|
||||
static HalfedgeMesh make_cube_mesh(double half = 1.0) {
|
||||
HalfedgeMesh m;
|
||||
// 8 vertices
|
||||
double h = half;
|
||||
m.add_vertex(Point3D(-h, -h, -h)); // 0
|
||||
m.add_vertex(Point3D( h, -h, -h)); // 1
|
||||
m.add_vertex(Point3D( h, h, -h)); // 2
|
||||
m.add_vertex(Point3D(-h, h, -h)); // 3
|
||||
m.add_vertex(Point3D(-h, -h, h)); // 4
|
||||
m.add_vertex(Point3D( h, -h, h)); // 5
|
||||
m.add_vertex(Point3D( h, h, h)); // 6
|
||||
m.add_vertex(Point3D(-h, h, h)); // 7
|
||||
|
||||
// 12 triangles (CCW from outside)
|
||||
// Bottom: z = -h
|
||||
m.add_face({0, 2, 1}); m.add_face({0, 3, 2});
|
||||
// Top: z = +h
|
||||
m.add_face({4, 5, 6}); m.add_face({4, 6, 7});
|
||||
// Front: y = -h
|
||||
m.add_face({0, 1, 5}); m.add_face({0, 5, 4});
|
||||
// Back: y = +h
|
||||
m.add_face({2, 3, 7}); m.add_face({2, 7, 6});
|
||||
// Left: x = -h
|
||||
m.add_face({0, 4, 7}); m.add_face({0, 7, 3});
|
||||
// Right: x = +h
|
||||
m.add_face({1, 2, 6}); m.add_face({1, 6, 5});
|
||||
|
||||
return m;
|
||||
}
|
||||
|
||||
/// Build a simple pyramid mesh: square base at z=-1, apex at z=+1
|
||||
static HalfedgeMesh make_pyramid_mesh() {
|
||||
HalfedgeMesh m;
|
||||
m.add_vertex(Point3D(-1, -1, -1)); // 0
|
||||
m.add_vertex(Point3D( 1, -1, -1)); // 1
|
||||
m.add_vertex(Point3D( 1, 1, -1)); // 2
|
||||
m.add_vertex(Point3D(-1, 1, -1)); // 3
|
||||
m.add_vertex(Point3D( 0, 0, 1)); // 4 — apex
|
||||
|
||||
// Base (two triangles)
|
||||
m.add_face({0, 2, 1});
|
||||
m.add_face({0, 3, 2});
|
||||
// Sides
|
||||
m.add_face({0, 1, 4});
|
||||
m.add_face({1, 2, 4});
|
||||
m.add_face({2, 3, 4});
|
||||
m.add_face({3, 0, 4});
|
||||
|
||||
return m;
|
||||
}
|
||||
|
||||
/// Count linear cutting segments in a toolpath
|
||||
static int count_linear_cuts(const Toolpath& tp) {
|
||||
int count = 0;
|
||||
for (auto& s : tp.segments) {
|
||||
if (s.type == PathSegmentType::Linear && s.z_depth <= 0) {
|
||||
count++;
|
||||
}
|
||||
}
|
||||
return count;
|
||||
}
|
||||
|
||||
/// Sample a NURBS curve at `count` evenly-spaced parameter values
|
||||
static std::vector<Point3D> sample_curve(const NurbsCurve& curve, int count) {
|
||||
std::vector<Point3D> pts;
|
||||
pts.reserve(count);
|
||||
auto [t0, t1] = curve.domain();
|
||||
for (int i = 0; i < count; ++i) {
|
||||
double t = t0 + (t1 - t0) * static_cast<double>(i) / static_cast<double>(count - 1);
|
||||
pts.push_back(curve.evaluate(t));
|
||||
}
|
||||
return pts;
|
||||
}
|
||||
|
||||
// ===========================================================================
|
||||
// Test 1: extract_contour_from_mesh — cube at z=0
|
||||
// ===========================================================================
|
||||
|
||||
TEST(CamMeshTest, ExtractContour_CubeAtZero) {
|
||||
auto cube = make_cube_mesh(2.0); // half-size 2, spans [-2, +2]
|
||||
auto contours = extract_contour_from_mesh(cube, 0.0);
|
||||
|
||||
// A cube intersected at z=0 should give a single closed contour
|
||||
// (the square at mid-height: x=±2, y=±2)
|
||||
EXPECT_GE(contours.size(), 1u);
|
||||
|
||||
if (!contours.empty()) {
|
||||
auto& c = contours[0];
|
||||
auto [t0, t1] = c.domain();
|
||||
EXPECT_LT(t0, t1);
|
||||
|
||||
// Sample and check bounds: points should be within [-2.5, +2.5] in XY
|
||||
// and z should be ~0
|
||||
auto sampled = sample_curve(c, 100);
|
||||
double z_tol = 1e-6;
|
||||
for (auto& p : sampled) {
|
||||
EXPECT_NEAR(p.z(), 0.0, z_tol);
|
||||
EXPECT_GE(p.x(), -2.5);
|
||||
EXPECT_LE(p.x(), 2.5);
|
||||
EXPECT_GE(p.y(), -2.5);
|
||||
EXPECT_LE(p.y(), 2.5);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// ===========================================================================
|
||||
// Test 2: extract_contour_from_mesh — no intersection (z above mesh)
|
||||
// ===========================================================================
|
||||
|
||||
TEST(CamMeshTest, ExtractContour_NoIntersection) {
|
||||
auto cube = make_cube_mesh(1.0); // spans z: -1..+1
|
||||
auto contours = extract_contour_from_mesh(cube, 5.0);
|
||||
EXPECT_TRUE(contours.empty());
|
||||
}
|
||||
|
||||
// ===========================================================================
|
||||
// Test 3: extract_contour_from_mesh — empty mesh
|
||||
// ===========================================================================
|
||||
|
||||
TEST(CamMeshTest, ExtractContour_EmptyMesh) {
|
||||
HalfedgeMesh empty;
|
||||
auto contours = extract_contour_from_mesh(empty, 0.0);
|
||||
EXPECT_TRUE(contours.empty());
|
||||
}
|
||||
|
||||
// ===========================================================================
|
||||
// Test 4: extract_contour_from_mesh — pyramid at z=0
|
||||
// ===========================================================================
|
||||
|
||||
TEST(CamMeshTest, ExtractContour_PyramidMid) {
|
||||
auto pyr = make_pyramid_mesh(); // base z=-1, apex z=+1
|
||||
auto contours = extract_contour_from_mesh(pyr, 0.0);
|
||||
|
||||
// At z=0, pyramid cross-section is a smaller square (size ~0.5 per side)
|
||||
EXPECT_GE(contours.size(), 1u);
|
||||
|
||||
if (!contours.empty()) {
|
||||
auto& c = contours[0];
|
||||
auto sampled = sample_curve(c, 200);
|
||||
double z_tol = 1e-6;
|
||||
for (auto& p : sampled) {
|
||||
EXPECT_NEAR(p.z(), 0.0, z_tol);
|
||||
// Pyramind at z=0: cross-section should be within [-0.6, 0.6]
|
||||
EXPECT_GE(p.x(), -0.6);
|
||||
EXPECT_LE(p.x(), 0.6);
|
||||
EXPECT_GE(p.y(), -0.6);
|
||||
EXPECT_LE(p.y(), 0.6);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// ===========================================================================
|
||||
// Test 5: contour_toolpath — cube contour
|
||||
// ===========================================================================
|
||||
|
||||
TEST(CamMeshTest, ContourToolpath_Cube) {
|
||||
auto cube = make_cube_mesh(2.0); // z: -2..+2
|
||||
Tool tool;
|
||||
tool.diameter = 6.0;
|
||||
ContourParams params;
|
||||
params.safe_z = 10.0;
|
||||
params.step_down = 1.0;
|
||||
params.feed_rate = 800.0;
|
||||
params.stock_to_leave = 0.0;
|
||||
|
||||
auto tp = contour_toolpath(cube, -2.0, tool, params);
|
||||
|
||||
// Should produce segments
|
||||
EXPECT_GT(tp.segments.size(), 0u);
|
||||
EXPECT_DOUBLE_EQ(tp.safe_z, 10.0);
|
||||
EXPECT_NEAR(tp.cut_z, -2.0, 1e-9);
|
||||
|
||||
// Check that all moving segments have valid z
|
||||
bool has_rapids = false;
|
||||
bool has_linear = false;
|
||||
for (auto& s : tp.segments) {
|
||||
if (s.type == PathSegmentType::Rapid) has_rapids = true;
|
||||
if (s.type == PathSegmentType::Linear) has_linear = true;
|
||||
}
|
||||
EXPECT_TRUE(has_rapids);
|
||||
EXPECT_TRUE(has_linear);
|
||||
}
|
||||
|
||||
// ===========================================================================
|
||||
// Test 6: contour_toolpath — empty mesh
|
||||
// ===========================================================================
|
||||
|
||||
TEST(CamMeshTest, ContourToolpath_EmptyMesh) {
|
||||
HalfedgeMesh empty;
|
||||
Tool tool;
|
||||
ContourParams params;
|
||||
|
||||
auto tp = contour_toolpath(empty, 0.0, tool, params);
|
||||
EXPECT_TRUE(tp.segments.empty());
|
||||
}
|
||||
|
||||
// ===========================================================================
|
||||
// Test 7: pocket_toolpath — basic pocket
|
||||
// ===========================================================================
|
||||
|
||||
TEST(CamMeshTest, PocketToolpath_Basic) {
|
||||
auto cube = make_cube_mesh(2.0);
|
||||
Tool tool;
|
||||
tool.diameter = 6.0;
|
||||
PocketParams params;
|
||||
params.step_over = 1.0;
|
||||
params.safe_z = 10.0;
|
||||
params.feed_rate = 800.0;
|
||||
params.cut_angle = 0.0;
|
||||
|
||||
std::vector<HalfedgeMesh> no_islands;
|
||||
auto tp = pocket_toolpath(cube, no_islands, -1.0, tool, params);
|
||||
|
||||
EXPECT_GT(tp.segments.size(), 0u);
|
||||
EXPECT_DOUBLE_EQ(tp.safe_z, 10.0);
|
||||
EXPECT_NEAR(tp.cut_z, -1.0, 1e-9);
|
||||
|
||||
int linear_cuts = count_linear_cuts(tp);
|
||||
EXPECT_GT(linear_cuts, 0) << "Should have cutting segments";
|
||||
}
|
||||
|
||||
// ===========================================================================
|
||||
// Test 8: pocket_toolpath — with islands
|
||||
// ===========================================================================
|
||||
|
||||
TEST(CamMeshTest, PocketToolpath_WithIslands) {
|
||||
auto cube = make_cube_mesh(3.0); // 6×6×6
|
||||
|
||||
// Make a smaller inner cube as an island
|
||||
HalfedgeMesh island;
|
||||
double h = 1.0;
|
||||
island.add_vertex(Point3D(-h, -h, -1));
|
||||
island.add_vertex(Point3D( h, -h, -1));
|
||||
island.add_vertex(Point3D( h, h, -1));
|
||||
island.add_vertex(Point3D(-h, h, -1));
|
||||
island.add_vertex(Point3D(-h, -h, 1));
|
||||
island.add_vertex(Point3D( h, -h, 1));
|
||||
island.add_vertex(Point3D( h, h, 1));
|
||||
island.add_vertex(Point3D(-h, h, 1));
|
||||
island.add_face({0, 2, 1}); island.add_face({0, 3, 2});
|
||||
island.add_face({4, 5, 6}); island.add_face({4, 6, 7});
|
||||
island.add_face({0, 1, 5}); island.add_face({0, 5, 4});
|
||||
island.add_face({2, 3, 7}); island.add_face({2, 7, 6});
|
||||
island.add_face({0, 4, 7}); island.add_face({0, 7, 3});
|
||||
island.add_face({1, 2, 6}); island.add_face({1, 6, 5});
|
||||
|
||||
Tool tool;
|
||||
tool.diameter = 3.0;
|
||||
PocketParams params;
|
||||
params.step_over = 0.8;
|
||||
params.safe_z = 10.0;
|
||||
params.feed_rate = 600.0;
|
||||
params.cut_angle = 45.0;
|
||||
|
||||
std::vector<HalfedgeMesh> islands = {island};
|
||||
auto tp = pocket_toolpath(cube, islands, -1.0, tool, params);
|
||||
|
||||
EXPECT_GT(tp.segments.size(), 0u);
|
||||
EXPECT_DOUBLE_EQ(tp.cut_z, -1.0);
|
||||
|
||||
// Should have at least some cutting segments
|
||||
int linear_cuts = count_linear_cuts(tp);
|
||||
EXPECT_GT(linear_cuts, 0) << "Pocket with islands should still cut outside";
|
||||
}
|
||||
|
||||
// ===========================================================================
|
||||
// Test 9: ContourParams / PocketParams defaults
|
||||
// ===========================================================================
|
||||
|
||||
TEST(CamMeshTest, ParamsDefaults) {
|
||||
ContourParams cp;
|
||||
EXPECT_DOUBLE_EQ(cp.safe_z, 10.0);
|
||||
EXPECT_DOUBLE_EQ(cp.step_down, 1.0);
|
||||
EXPECT_DOUBLE_EQ(cp.feed_rate, 800.0);
|
||||
EXPECT_DOUBLE_EQ(cp.stock_to_leave, 0.0);
|
||||
|
||||
PocketParams pp;
|
||||
EXPECT_DOUBLE_EQ(pp.step_over, 2.0);
|
||||
EXPECT_DOUBLE_EQ(pp.safe_z, 10.0);
|
||||
EXPECT_DOUBLE_EQ(pp.step_down, 1.0);
|
||||
EXPECT_DOUBLE_EQ(pp.feed_rate, 800.0);
|
||||
EXPECT_DOUBLE_EQ(pp.cut_angle, 0.0);
|
||||
}
|
||||
|
||||
// ===========================================================================
|
||||
// Test 10: contour_toolpath — stock_to_leave offset
|
||||
// ===========================================================================
|
||||
|
||||
TEST(CamMeshTest, ContourToolpath_StockToLeave) {
|
||||
auto cube = make_cube_mesh(2.0);
|
||||
Tool tool;
|
||||
ContourParams params;
|
||||
params.stock_to_leave = 0.5;
|
||||
params.safe_z = 10.0;
|
||||
params.step_down = 4.0; // single pass — target z=-2, start z=+2
|
||||
|
||||
auto tp = contour_toolpath(cube, -2.0, tool, params);
|
||||
EXPECT_GT(tp.segments.size(), 0u);
|
||||
}
|
||||
|
||||
// ===========================================================================
|
||||
// Test 11: pocket_toolpath — empty boundary mesh
|
||||
// ===========================================================================
|
||||
|
||||
TEST(CamMeshTest, PocketToolpath_EmptyBoundary) {
|
||||
HalfedgeMesh empty;
|
||||
Tool tool;
|
||||
PocketParams params;
|
||||
std::vector<HalfedgeMesh> no_islands;
|
||||
|
||||
auto tp = pocket_toolpath(empty, no_islands, 0.0, tool, params);
|
||||
EXPECT_TRUE(tp.segments.empty());
|
||||
}
|
||||
@@ -9,3 +9,4 @@ add_vde_test(test_reverse_engineering)
|
||||
add_vde_test(test_fea_mesh)
|
||||
add_vde_test(test_hex_mesh)
|
||||
add_vde_test(test_visualization)
|
||||
add_vde_test(test_mesh_to_curve)
|
||||
|
||||
@@ -0,0 +1,187 @@
|
||||
/**
|
||||
* @file test_mesh_to_curve.cpp
|
||||
* @brief 测试 mesh→curve 桥接API (VDE-021)
|
||||
*
|
||||
* 覆盖:
|
||||
* 1. mesh_boundary_to_curve — 基本边界提取
|
||||
* 2. mesh_boundary_to_curve — 闭合流形（无边界）
|
||||
* 3. extract_profiles_from_mesh — 单轮廓
|
||||
* 4. extract_profiles_from_mesh — 多轮廓（离散边界环）
|
||||
* 5. mesh_contour_to_curves — Z 截面
|
||||
* 6. mesh_contour_to_curves — 无交点
|
||||
* 7. extrude(mesh) 重载
|
||||
* 8. loft(mesh) 重载
|
||||
*/
|
||||
#include <gtest/gtest.h>
|
||||
#include "vde/mesh/halfedge_mesh.h"
|
||||
#include "vde/mesh/mesh_to_curve.h"
|
||||
#include "vde/brep/modeling.h"
|
||||
|
||||
using namespace vde;
|
||||
using vde::core::Point3D;
|
||||
using vde::core::Vector3D;
|
||||
|
||||
namespace {
|
||||
|
||||
// ── Helper: build a square patch mesh with a hole (boundary inside and outside) ──
|
||||
// Returns a mesh that is a flat quad in XY plane with a triangular hole
|
||||
mesh::HalfedgeMesh make_square_with_hole() {
|
||||
// Outer square vertices (counter-clockwise)
|
||||
// (0,0,0), (4,0,0), (4,4,0), (0,4,0)
|
||||
// Inner triangle hole vertices (clockwise for hole):
|
||||
// (1,1,0), (3,1,0), (2,3,0)
|
||||
std::vector<Point3D> verts = {
|
||||
{0,0,0}, {4,0,0}, {4,4,0}, {0,4,0}, // outer 0-3
|
||||
{1,1,0}, {3,1,0}, {2,3,0}, // inner 4-6
|
||||
};
|
||||
// Triangulate the annulus region manually
|
||||
// Using a fan from inner to outer
|
||||
std::vector<std::array<int,3>> tris;
|
||||
// Ring: connect outer edges to inner edges
|
||||
// side 0-1 (bottom) with hole edge 4-5
|
||||
tris.push_back({0,1,5}); tris.push_back({0,5,4});
|
||||
// side 1-2 (right) with hole edge 5-6
|
||||
tris.push_back({1,2,6}); tris.push_back({1,6,5});
|
||||
// side 2-3 (top) with hole edge 6-4
|
||||
tris.push_back({2,3,4}); tris.push_back({2,4,6});
|
||||
// side 3-0 (left)
|
||||
tris.push_back({3,0,4});
|
||||
|
||||
mesh::HalfedgeMesh m;
|
||||
m.build_from_triangles(verts, tris);
|
||||
return m;
|
||||
}
|
||||
|
||||
// ── Helper: build a closed tetrahedron (no boundary) ──
|
||||
mesh::HalfedgeMesh make_tetrahedron() {
|
||||
std::vector<Point3D> verts = {
|
||||
{0,0,0}, {2,0,0}, {1,2,0}, {1,1,2}
|
||||
};
|
||||
std::vector<std::array<int,3>> tris = {
|
||||
{0,1,2}, {0,2,3}, {0,3,1}, {1,3,2}
|
||||
};
|
||||
mesh::HalfedgeMesh m;
|
||||
m.build_from_triangles(verts, tris);
|
||||
return m;
|
||||
}
|
||||
|
||||
// ── Helper: build a mesh with two disconnected boundary loops ──
|
||||
mesh::HalfedgeMesh make_two_holes() {
|
||||
std::vector<Point3D> verts = {
|
||||
{0,0,0}, {8,0,0}, {8,4,0}, {0,4,0}, // outer 0-3
|
||||
{1,1,0}, {3,1,0}, {2,2,0}, // hole1 4-6
|
||||
{5,1,0}, {7,1,0}, {6,3,0}, // hole2 7-9
|
||||
};
|
||||
std::vector<std::array<int,3>> tris = {
|
||||
// Bottom strip left of hole1
|
||||
{0,1,7}, {0,7,4},
|
||||
// Between hole1 and hole2
|
||||
{4,5,8}, {4,8,7},
|
||||
// Right side
|
||||
{1,2,9}, {1,9,8},
|
||||
// Top
|
||||
{2,3,6}, {2,6,9},
|
||||
// Left
|
||||
{3,0,4}, {3,4,6},
|
||||
// Fill between holes top
|
||||
{5,6,9}, {5,9,8},
|
||||
};
|
||||
mesh::HalfedgeMesh m;
|
||||
m.build_from_triangles(verts, tris);
|
||||
return m;
|
||||
}
|
||||
|
||||
} // namespace
|
||||
|
||||
// ── Test 1: mesh_boundary_to_curve on mesh with hole ──
|
||||
TEST(MeshToCurve, BoundaryToCurve_Hole) {
|
||||
auto mesh = make_square_with_hole();
|
||||
auto curve = mesh::mesh_boundary_to_curve(mesh);
|
||||
// Should produce a valid curve (degree >= 1)
|
||||
EXPECT_GT(curve.degree(), 0);
|
||||
EXPECT_FALSE(curve.control_points().empty());
|
||||
// Verify it evaluates without error
|
||||
auto [t0, t1] = curve.domain();
|
||||
auto pt = curve.evaluate((t0 + t1) * 0.5);
|
||||
EXPECT_FALSE(std::isnan(pt.x()));
|
||||
}
|
||||
|
||||
// ── Test 2: mesh_boundary_to_curve on closed manifold (no boundary) ──
|
||||
TEST(MeshToCurve, BoundaryToCurve_ClosedMesh) {
|
||||
auto mesh = make_tetrahedron();
|
||||
auto curve = mesh::mesh_boundary_to_curve(mesh);
|
||||
// No boundary → degenerate curve (degree 0)
|
||||
EXPECT_EQ(curve.degree(), 0);
|
||||
EXPECT_TRUE(curve.control_points().empty());
|
||||
}
|
||||
|
||||
// ── Test 3: extract_profiles_from_mesh with single profile ──
|
||||
TEST(MeshToCurve, ExtractProfiles_Single) {
|
||||
auto mesh = make_square_with_hole();
|
||||
auto profiles = mesh::extract_profiles_from_mesh(mesh, Vector3D::UnitZ());
|
||||
EXPECT_FALSE(profiles.empty());
|
||||
for (auto& p : profiles) {
|
||||
EXPECT_GT(p.degree(), 0);
|
||||
EXPECT_FALSE(p.control_points().empty());
|
||||
}
|
||||
}
|
||||
|
||||
// ── Test 4: extract_profiles_from_mesh with multiple boundary loops ──
|
||||
TEST(MeshToCurve, ExtractProfiles_Multiple) {
|
||||
auto mesh = make_two_holes();
|
||||
auto profiles = mesh::extract_profiles_from_mesh(mesh, Vector3D::UnitZ());
|
||||
// Should have at least 2 profiles (outer + inner holes)
|
||||
EXPECT_GE(profiles.size(), 2u);
|
||||
for (auto& p : profiles) {
|
||||
EXPECT_GT(p.degree(), 0);
|
||||
}
|
||||
}
|
||||
|
||||
// ── Test 5: mesh_contour_to_curves at Z plane ──
|
||||
TEST(MeshToCurve, ContourToCurves_ZSlice) {
|
||||
auto mesh = make_tetrahedron();
|
||||
// The tetrahedron has vertices at z=0,0,0,2. Slice at z=1 should intersect.
|
||||
auto contours = mesh::mesh_contour_to_curves(mesh, 1.0);
|
||||
EXPECT_FALSE(contours.empty());
|
||||
for (auto& c : contours) {
|
||||
EXPECT_GT(c.degree(), 0);
|
||||
}
|
||||
}
|
||||
|
||||
// ── Test 6: mesh_contour_to_curves no intersection ──
|
||||
TEST(MeshToCurve, ContourToCurves_NoIntersection) {
|
||||
auto mesh = make_tetrahedron();
|
||||
auto contours = mesh::mesh_contour_to_curves(mesh, 10.0);
|
||||
// Z=10 is above the tetrahedron, no intersection
|
||||
EXPECT_TRUE(contours.empty());
|
||||
}
|
||||
|
||||
// ── Test 7: extrude mesh overload ──
|
||||
TEST(MeshToCurve, ExtrudeMeshOverload) {
|
||||
auto mesh = make_square_with_hole();
|
||||
auto result = brep::extrude(mesh, Vector3D(0, 0, 5));
|
||||
EXPECT_GT(result.num_faces(), 0u);
|
||||
EXPECT_GT(result.num_bodies(), 0u);
|
||||
}
|
||||
|
||||
// ── Test 8: loft mesh overload ──
|
||||
TEST(MeshToCurve, LoftMeshOverload) {
|
||||
// Create two square meshes at different Z heights
|
||||
auto make_square = [](double z) {
|
||||
std::vector<Point3D> verts = {
|
||||
{0,0,z}, {3,0,z}, {3,3,z}, {0,3,z}
|
||||
};
|
||||
std::vector<std::array<int,3>> tris = {
|
||||
{0,1,2}, {0,2,3}
|
||||
};
|
||||
mesh::HalfedgeMesh m;
|
||||
m.build_from_triangles(verts, tris);
|
||||
return m;
|
||||
};
|
||||
auto mesh1 = make_square(0.0);
|
||||
auto mesh2 = make_square(5.0);
|
||||
std::vector<mesh::HalfedgeMesh> profiles = {mesh1, mesh2};
|
||||
auto result = brep::loft(profiles);
|
||||
EXPECT_GT(result.num_faces(), 0u);
|
||||
EXPECT_GT(result.num_bodies(), 0u);
|
||||
}
|
||||
Reference in New Issue
Block a user