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50 lines
1.4 KiB
50 lines
1.4 KiB
2 weeks ago
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# OCCTMeshless
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基于 OpenCASCADE 的无网格法（Meshless Method）离散化工具。从 CAD 模型（B-Rep）出发，直接在边界和内部生成离散节点，无需传统网格划分。
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## 功能
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- 从 OpenCASCADE B-Rep 模型读取几何
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- 边界自适应离散化（discretizeBoundaryWithStep）
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- 内部节点填充（FillInterior）
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- KDTree 空间搜索与包含检测
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- 离散结果 VTK 输出
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## 依赖
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- **OpenCASCADE 7.x+**：CAD 几何引擎
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- **Eigen3**：线性代数
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- **Visual Studio**（Windows）/ GCC（Linux）
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- **nanoflann**：KDTree 实现（内置）
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## 编译（Windows）
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```shell
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mkdir build && cd build
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cmake -G "Visual Studio 17 2022" ..
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```
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需设置 `CMAKE_PREFIX_PATH` 指向 OpenCASCADE 安装目录。
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## 目录结构
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```
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.
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├── include/
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│ ├── OccShape.hpp # OpenCASCADE 几何封装
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│ ├── OccHelper.hpp # OpenCASCADE 辅助函数
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│ ├── DomainDiscretization.hpp # 域离散化
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│ ├── FillBoundary.hpp # 边界填点
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│ ├── FillInterior.hpp # 内部填点
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│ ├── KDTree.hpp # KDTree 空间索引
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│ ├── PointCloud.hpp # 点云数据
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│ └── writeVTK.hpp # VTK 输出
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├── src/
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│ └── main.cpp # 示例：B-Rep → 离散点
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└── CMakeLists.txt
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```
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## 作者
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李采月
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