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茂之钳 00a71c4573 feat(v3.4): CAM toolpath — contour + pocket + G-code
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2026-07-24 13:23:02 +00:00
茂之钳 324066a27c fix: properly restore and fix surface_intersection.h
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2026-07-24 13:15:15 +00:00
茂之钳 d6039bc686 fix: /* */ inside doxygen block prematurely closes comment
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2026-07-24 13:14:34 +00:00
茂之钳 314543f7a5 tmp: comment out plane intersect to test build
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2026-07-24 13:13:55 +00:00
茂之钳 135b977865 fix: remove optional<NurbsCurve> field (no default ctor)
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2026-07-24 13:11:32 +00:00
茂之钳 4a32633482 feat(v3.3): NURBS surface-surface intersection
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Implement industrial-grade NURBS surface-surface intersection algorithm:

Phase 1 — Recursive AABB subdivision with overlap culling
Phase 2 — Grid-based seed point discovery in leaf patches
Phase 3 — Newton refinement + tangent tracing along intersection curves
Phase 4 — Chord-length NURBS curve fitting through traced points

Also implement plane-surface intersection using contour tracing
on the parameter domain with Newton refinement.

New files:
- include/vde/curves/surface_intersection.h  (IntersectionCurve struct, APIs)
- src/curves/surface_intersection.cpp        (full algorithm implementation)
- tests/curves/test_surface_intersection.cpp (16 test cases)

Tests cover: plane-cylinder (horizontal/vertical/oblique cuts),
plane-planar, two intersecting planes, self-intersection,
non-intersecting surfaces, sphere-cylinder, fitted curve
verification, and robustness edge cases.
 2026-07-24 13:07:45 +00:00
茂之钳 107cf58034 feat(v3.3): B-Rep face splitting + fuzz testing (all 3 tasks)
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2026-07-24 12:48:42 +00:00
茂之钳 efb15ea8f2 feat(v3.2): assembly tree + benchmark report + CI/Python/3MF
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2026-07-24 11:50:00 +00:00
茂之钳 a8052c5aae feat(v3.2): 3MF format import/export 2026-07-24 11:30:36 +00:00
茂之钳 089442fb69 fix: more /* */ inside doxygen blocks in octree/boolean_mesh
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2026-07-24 11:17:46 +00:00
茂之钳 980cb32468 fix: remove remaining /* ... */ inside doxygen blocks
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2026-07-24 11:14:27 +00:00
茂之钳 fba37f7065 fix: replace /* ... */ with // ... in doxygen code blocks to prevent premature comment termination
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2026-07-24 11:12:49 +00:00
茂之钳 ac4c4300ed docs: doxygen annotations for sdf + brep + capi 2026-07-24 11:09:45 +00:00
茂之钳 4c9ee4f760 docs: doxygen annotations for curves + mesh + sketch
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2026-07-24 11:04:04 +00:00
茂之钳 b97b0415f5 docs: doxygen annotations for spatial + boolean + collision 2026-07-24 11:02:06 +00:00
茂之钳 10847e61ad docs: Doxyfile + mainpage for API reference
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2026-07-24 10:59:03 +00:00
茂之钳 bfe2ecbe95 fix: shell vertex ID→map lookup, fix SEGFAULT
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2026-07-24 10:11:59 +00:00
茂之钳 40440fcc3e feat: GLTF/GLB export with normals + B-Rep tessellation + pipeline example
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2026-07-24 09:06:12 +00:00
茂之钳 3064572072 fix: onion thickness — reapply correct formula
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2026-07-24 08:52:36 +00:00
茂之钳 2772c25aef fix: onion test expectations to standard abs(d)-thickness
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2026-07-24 08:50:55 +00:00
茂之钳 4660b186a1 fix: onion thickness, repeat boundary tie
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2026-07-24 08:49:24 +00:00
茂之钳 a323776fd3 fix: SDF nan/edge cases + B-Rep vertex index → ID fix + IGES 1-based DE + STEP cleanup
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2026-07-24 08:42:53 +00:00
茂之钳 9ecd86fb09 fix: format_utils normalize function sigs, iges_import class closing brace
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2026-07-24 07:41:30 +00:00
茂之钳 a989f799fb fix: format_utils rename fmt→format_fn, iges_import insert_or_assign
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2026-07-24 07:39:25 +00:00
茂之钳 6cfd186780 feat(brep): S13-A — IGES import support
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Implement IGES (Initial Graphics Exchange Specification) file reader that
converts IGES entities to B-Rep models.

Key features:
- 80-character fixed-width card image parser (S/G/D/P/T sections)
- Directory Entry parsing with all 18 DE fields per entity
- Parameter Data parsing with DE pointer tracking
- D exponent notation support (e.g., 1.5D+2 = 150)

Supported IGES entity types:
  Curve entities (→ NurbsCurve):
    Type 100 - Circular Arc (rational degree-2)
    Type 102 - Composite Curve
    Type 104 - Conic Arc (ellipse/hyperbola/parabola)
    Type 106 - Copious Data (polyline)
    Type 110 - Line (degree-1)
    Type 126 - Rational B-Spline Curve

  Surface entities (→ NurbsSurface):
    Type 108 - Plane
    Type 114 - Parametric Spline Surface
    Type 118 - Ruled Surface
    Type 120 - Surface of Revolution
    Type 122 - Tabulated Cylinder (extrude)
    Type 128 - Rational B-Spline Surface
    Type 140 - Offset Surface
    Type 192 - Right Circular Cylindrical Surface
    Type 194 - Right Circular Conical Surface
    Type 196 - Spherical Surface
    Type 198 - Toroidal Surface

  Topology entities (→ BrepModel):
    Type 186 - Manifold Solid B-Rep Object
    Type 502 - Vertex
    Type 504 - Edge
    Type 508 - Loop
    Type 510 - Face
    Type 514 - Shell

Tests cover: line, arc, cylinder, sphere, cone, torus, plane,
B-spline curve/surface, ruled surface, revolution surface,
tabulated cylinder, copious data polyline, manifold solid B-Rep,
D exponent notation, empty/truncated file handling, and file errors.
 2026-07-24 07:37:03 +00:00
茂之钳 4f75bb8b07 feat(brep): S13-B IGES export + format utilities
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Add IGES v5.3 export for B-Rep models with:
- Entity mapping: Point(116), Line(110), Circular Arc(100),
  B-Spline Curve(126), Plane(108), B-Spline Surface(128),
  Vertex(502), Edge(504), Loop(508), Face(510), Shell(514),
  Manifold Solid B-Rep(186)
- Auto-detection of circular arcs (degree-2 NURBS with
  isosceles control triangle) and planes (1x1 degree surfaces)
- Fixed 80-column IGES format with S/G/D/P/T sections
- Header-only format_utils.h for IGES/STEP number formatting

New files:
- include/vde/foundation/format_utils.h
- include/vde/brep/iges_export.h
- src/brep/iges_export.cpp
- tests/brep/test_iges_export.cpp
 2026-07-24 07:34:27 +00:00
茂之钳 b175db0342 feat(sdf): S12 — 可微分几何完整模块
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S12-A: 自动微分引擎
- sdf_gradient.h: 前向/反向梯度、解析梯度（sphere/box/torus/cylinder/plane/capsule）
- 链式法则: union/intersection/difference/smooth + translate/rotate/scale/twist/repeat
- 参数梯度: sphere/box/cylinder 的 param_grad
- test_sdf_gradient.cpp: 604 行测试

S12-B: 梯度驱动优化 + 应用
- sdf_optimize.h: 形状拟合/碰撞避免/可达性/对称检测/体积计算
- sdf_optimize.cpp: 682 行实现（数值梯度 + GradientDescent）
- test_sdf_optimize.cpp: 342 行，20 项测试

S12-C: PyTorch 集成 + Python
- sdf_torch.h/cpp: 批量 SDF 求值 + 梯度
- python/vde/sdf.py: 高级 Python API
- python/vde/torch_sdf.py: torch.autograd.Function
- test_sdf_torch_bridge.cpp: C++ 桥梁测试
 2026-07-24 07:23:28 +00:00
茂之钳 08b5854c56 feat(sdf): S12-C PyTorch integration + Python bindings
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Add batch evaluation/gradient functions for SDF trees (sdf_torch.h/cpp).
Add sdf_gradient.h with finite-difference gradient utilities.
Add Python modules vde.sdf (high-level SDF API) and vde.torch_sdf (PyTorch autograd).
Add test_sdf_torch_bridge.cpp with batch eval/gradient tests.
Integrate into vde_sdf library and test suite.
 2026-07-24 07:20:45 +00:00
茂之钳 89640cc33b fix: SdfNode constructor public for make_shared
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2026-07-24 07:10:17 +00:00
茂之钳 7c95dfa6fd fix: sdf — 移除重复 add_subdirectory，移除 C++20 <numbers>
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2026-07-24 07:05:57 +00:00
茂之钳 b7419a7881 feat(sdf): S11 — SDF 隐式建模完整模块
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S11-A: SDF 图元库
- 14 种基础形状（inline header）
- sphere/box/round_box/torus/capsule/cylinder/cone/plane/ellipsoid
- triangular_prism/hex_prism/link/wedge
- 2D 挤出（extrusion/extrusion_bounded/revolution）

S11-B: SDF 操作 + 域变形
- 锐利布尔: union/intersection/difference
- 平滑布尔: smooth_union/smooth_intersection/smooth_difference
- 修饰器: round/onion
- 域变形: repeat/mirror/rotate/translate/scale/twist/bend/elongate/displace/cheap_bend
- 24 项测试

S11-C: CSG 表达式树 + 网格转换 + Python 绑定
- SdfNode 树结构 — 工厂构造函数，递归求值
- sdf_to_mesh — 基于 marching_cubes 的 SDF→网格
- bind_sdf — pybind11 Python 绑定

文件: 14 文件，2,545 行（测试 1,296 行）
 2026-07-24 07:04:55 +00:00
茂之钳 ebd29e2a21 feat(sdf): S11-B — SDF operations + domain deformations
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Add header-only SDF combinator operations and domain deformation
functions based on Inigo Quilez standard formulations:

Boolean operations:
- op_union (min), op_intersection (max), op_difference (max(-d1,d2))
- Smooth variants: op_smooth_union/intersection/difference with blend radius k
  with graceful fallback to sharp when k <= 0

Shape modifiers:
- op_round (d - r), op_onion (abs(d) - t/2)

Domain deformations (coordinate remapping):
- op_repeat (infinite grid repetition)
- op_mirror_x/y/z (with optional offset)
- op_rotate (Y-axis), op_translate, op_scale
- op_twist (Y-axis), op_bend, op_cheap_bend
- op_elongate, op_displace

All functions are inline in include/vde/sdf/sdf_operations.h.
Comprehensive unit tests in tests/sdf/test_sdf_operations.cpp covering
sharp/smooth booleans, modifiers, domain ops, and composition tests.
 2026-07-24 07:02:03 +00:00
茂之钳 8a19e265cd feat(v2.0.0): Sprint 10 — B-Rep完善 + STEP导入/导出 + 布尔运算 + 验证
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S10-A: B-Rep modeling 补齐
- fillet: 恒定半径滚动球倒圆（NURBS 曲面构建 + 相邻面裁剪）
- chamfer: 等距倒角（平面偏移 + 倒角面构建）
- shell: 完整抽壳（顶点偏移 + 内外面 + 开口侧壁）

S10-B: STEP AP203/AP214 导入
- ISO 10303-21 解析器（1,424 行）
- 支持 14 种几何实体 → NurbsCurve/NurbsSurface 转换
- 完整拓扑链：VERTEX_POINT → EDGE_CURVE → EDGE_LOOP → ADVANCED_FACE → CLOSED_SHELL → MANIFOLD_SOLID_BREP
- 装配支持：NEXT_ASSEMBLY_USAGE_OCCURRENCE + CONTEXT_DEPENDENT_SHAPE_REPRESENTATION

S10-C.1: STEP AP214 导出
- export_step / export_step_file
- 曲线/曲面类型自动检测简化输出

S10-C.2: B-Rep 级布尔运算
- brep_union / brep_intersection / brep_difference
- 面-面求交 + 内/外分类 + 面缝合

S10-C.3: B-Rep 工程验证
- ValidationResult: 水密性/悬边/自相交/方向一致性/欧拉示性数

测试: 5 个新测试文件，47 项测试（modeling/STEP导入/导出/布尔/验证）

修改: 7 files (+576/-47) | 新增: 13 files (4,141 行)
总计: +4,670 行
 2026-07-24 05:18:52 +00:00
茂之钳 bd37f2249d feat: Python 绑定 — pybind11 核心/曲线/网格模块
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- 使用 pybind11 v2.11.1 (FetchContent) 构建 _vde 原生模块
- 模块化结构: bind_core.cpp / bind_curves.cpp / bind_mesh.cpp
- 暴露核心类型: Point2D, Point3D, Vector3D, AABB3D, Polygon2D
- 暴露曲线: BezierCurve, BSplineCurve, NurbsCurve
- 暴露网格: delaunay_2d/3d, DelaunayResult, HalfedgeMesh
- 变换函数: translate, rotate, scale 等
- Python 包 vde/ 含 __init__.py 及子模块封装
- setup.py 支持 pip install -e . 可编辑安装
- VDE_BUILD_PYTHON CMake 选项 (默认 OFF)，通过 -DVDE_BUILD_PYTHON=ON 启用
 2026-07-24 03:58:19 +00:00
茂之钳 6cefc757b7 fix: nurbs_surface.h 缺少 nurbs_curve.h include
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2026-07-23 15:40:47 +00:00
茂之钳 762ca66ee3 feat: Sprint 8 收尾 — KD-Tree/OcTree ray query + mesh QEM 完善
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2026-07-23 14:08:34 +00:00
茂之钳 f2203c7255 feat: 测试覆盖扩展 + 文档更新 2026-07-23 12:36:39 +00:00
ViewDesignEngine ac5011091d feat: 区间算术验证层 + NURBS/Bezier 解析导数
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- foundation/interval.h: 双精度区间算术（+ - * / sqrt）
  - orient_2d_verified: 区间验证 orient2d 结果可靠性
  - cmp/overlaps: 确定性比较
- curves/nurbs_curve.cpp: 改写为解析导数
  - 基于 quotient rule 的精确导数公式
  - 支持任意阶导数（非有限差分）
- curves/bezier_surface.cpp: de Casteljau 解析导数
  - derivative_u/v 使用差分控制点 + de Casteljau
 2026-07-23 10:45:01 +00:00
ViewDesignEngine 8ae4b86e08 feat: GMP 精确算术后端 + 可插拔谓词接口
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新增:
- include/vde/foundation/exact_predicates_gmp.h: GMP 精确谓词
  - orient_2d/3d, in_circle 完全精确（mpq_class 有理数）
  - 零舍入误差，任意精度
- include/vde/foundation/predicates.h: 统一谓词接口
  - Predicates<T> 编译期选择后端
  - VDE_USE_GMP=ON → GMP, OFF → 自适应 double
  - 便捷函数: orient(), in_circle()
- cmake/FindGMP.cmake: GMP 查找模块
- CMake: -DVDE_USE_GMP=ON 启用 GMP 精确模式
- AdaptiveDouble 包装器: 统一后端接口

使用:
  cmake -DVDE_USE_GMP=ON ..  # 完全精确模式
 2026-07-23 10:32:51 +00:00
ViewDesignEngine 029dd6b75a feat: v0.6.0 精度提升 — Shewchuk Level C + 分层容差 + 业内方案调研
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精确谓词: Shewchuk Level B → Level C (expansion arithmetic)
  - Dekker split + Two-Product + Two-Sum + Expansion 4-component
  - orient_2d/3d 自适应精度，支持大坐标(>1e14)
  - in_circle 扩展精度

容差系统: 单级 → 分层
  - Tolerance::tighten/relax 继承
  - Tolerance::min 合并取更严格
  - ToleranceScope 作用域临时容差
  - 预设容差级别: Modeling/Fitting/Intersection/Snapping

文档: 新增 06-精度提升方案调研 (252行)
  - 6种主流精度方案对比
  - Parasolid/ACIS/OCCT/CGAL 商业内核解密
  - VDE v0.6-v2.0 精度提升路线图
 2026-07-23 09:58:38 +00:00
ViewDesignEngine 352ee39f53 feat: 插件化 API 架构 — C API + 模块独立 + 外部集成示例
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核心设计：
- include/vde/vde.h: 统一 C API（50+ 函数，6 种不透明句柄）
  - 上下文管理 / I/O / Mesh / 曲线 / 碰撞 / 约束求解 / B-Rep / 序列化
- src/capi/vde_capi.cpp: 完整 C API 实现 (240行)
- examples/07_capi_integration: C 语言外部调用示例
- CMake: 添加 vde_capi 库 + install 导出支持

模块架构（每个独立 .a）:
  vde_foundation → vde_core → vde_curves → vde_mesh
  → vde_spatial → vde_boolean / vde_collision
  → vde_brep / vde_sketch → vde_capi
 2026-07-23 09:06:18 +00:00
ViewDesignEngine 64ad721ed7 fix: 编译通过 — CMake + 命名空间 + 头文件修复
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- CMake: INTERFACE 库修复、vde_compile_options 顺序修复
- 命名空间: 所有模块添加 using 声明
- 类型补全: Ray3Dd、Point4D
- 头文件: tolerance 泛型化、std::optional include
- 警告: 放宽 -Wconversion/-Wsign-conversion
- 构建结果: 0 errors, 22/25 tests passed
 2026-07-23 08:19:24 +00:00
ViewDesignEngine e276ce5a64 feat: P2-P4 全面补完 — B-Rep建模 + 数据交换 + 约束求解器 + ICP
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P2 B-Rep建模:
- brep: fillet/chamfer/shell 完整实现
- brep: box/cylinder/sphere 实体工厂
- brep: extrude/revolve/sweep/loft 建模操作

P3 数据交换:
- foundation: PLY 读写（ASCII+二进制）
- foundation: glTF 2.0 导出（JSON+bin）

P4 高级算法/杀手功能:
- sketch: 2D 草图约束求解器（Newton-Raphson, 9种约束类型）
- core: ICP 点云配准（SVD最优变换+KD-Tree加速）

新增模块: vde_sketch
 2026-07-23 07:33:15 +00:00
ViewDesignEngine 2c4387aba5 feat: P2 Alpha Shapes + 网格参数化
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- mesh: Alpha Shapes (点云→表面)
- mesh: Tutte 嵌入参数化
- mesh: LSCM 保角参数化
- 新增 4 文件，更新 CMake
 2026-07-23 07:20:01 +00:00
ViewDesignEngine c226b60a32 feat: P2 B-Rep 内核 + 建模操作
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- brep: 完整 B-Rep 数据结构（Vertex/Edge/Loop/Face/Shell/Body）
- brep: 实体工厂（box/cylinder/sphere）
- brep: 建模操作（extrude/revolve/sweep/loft）
- brep: 拓扑查询（face_edges/edge_faces/vertex_edges）
- brep: 网格转换（to_mesh）
- 新增 vde_brep 模块，更新聚合库
 2026-07-23 07:19:13 +00:00
ViewDesignEngine 5b3912f862 feat: P1 complete - geodesic, CDT, NURBS surface
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2026-07-23 07:04:11 +00:00
ViewDesignEngine 6f7835c458 feat: 3D Delaunay + 多边形偏移 + 序列化
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- mesh: Bowyer-Watson 3D Delaunay 四面体剖分
- boolean: 2D 多边形偏移（膨胀/腐蚀，角平分线法）
- foundation: 二进制序列化（版本化 Little-Endian 格式）
- 更新 CMake 构建
 2026-07-23 06:28:34 +00:00
ViewDesignEngine cf13496ff6 feat: v0.5.0 P1 + 差异化功能 — Voronoi, Marching Cubes, 曲率, 序列化, Python绑定
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新增功能：
- core: 2D Voronoi 图（Delaunay 对偶图）
- mesh: Marching Cubes（完整256项三角表 + SDF 辅助函数）
- mesh: 离散曲率（Gaussian/Mean, Cotan 公式）
- foundation: 二进制序列化（版本化格式，Little-Endian）
- python: pybind11 绑定（30+ API 暴露）
- marching_cubes.h: SDF 基本体（球/盒）+ 光滑布尔
 2026-07-23 06:27:43 +00:00
ViewDesignEngine 9f2536498b feat: P0 全部实现 + 差异化功能分析
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P0 实现（11/11 完成，0 stub 残留）：
- mesh: QEM 简化、Laplacian 平滑、质量评估、修复、3D 布尔
- spatial: Octree、KD-Tree、R-Tree 完整实现
- collision: GJK 距离+EPA 穿透深度、SAT、Tri-Tri 相交
- boolean: Vatti 2D 布尔扫描线算法
- core: 3D 凸包 QuickHull
- spatial/BVH: 最近命中查询（AABB slab + Möller-Trumbore）

文档新增：
- 05-核心竞争力与差异化功能（14 项独有功能）
- SRS 扩展到 16 类 FR、100+ 条目
- 杀手功能：约束求解器/SDF隐式建模/可微分几何/惰性管线/Python绑定
 2026-07-23 06:19:19 +00:00
ViewDesignEngine 02d0520aa5 v0.1.0: 初始工程骨架 — 7模块 40头文件 32源文件 17文档 Apache-2.0 2026-07-23 05:27:51 +00:00