clipper2 SKILL.md skillA
clipper2 from znlgis/opengis-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add znlgis/opengis-skills/clipper2@git:20261014.e943c53Pins git:20261014.e943c53 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- znlgis/opengis-skills
- Path
cad/clipper2/SKILL.md- Versions recorded
- 5
- Latest version
- git:20261014.e943c53, committed Oct 14, 2026
- First version recorded
- Sep 1, 2026
- Size
- 8,761 bytes
- Repository stars
- 70
- License
- MIT
Use when performing high-performance 2D polygon boolean operations (union, intersection, difference, XOR) and offsetting via C++, C#, or Python bindings. Clipper2: the modern polygon clipping library with robust numerical handling.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
> **项目地址：** <https://github.com/AngusJohnson/Clipper2>
>
> **官方文档：** <http://www.angusj.com/clipper2/Docs/Overview.htm>
>
> **最新稳定版：** 2.0.1（截至2026年9月，tag `Clipper2_2.0.1`）
>
> **NuGet：** `Clipper2`
>
> **许可证：** Boost Software License 1.0
## 概述
Clipper2 相对 Clipper1 的提升：
- 全新算法，速度更快、内存更省
- 支持浮点（`PathsD`）与整数（`Paths64`）双模式
- 全新偏移引擎：更鲁棒的 mitre/square/round 端帽与连接
- 简洁 API：`Union/Intersect/Difference/Xor` 顶级函数
- 多语言：C++、C#、Delphi、JS（Clipper2.js 移植）
---
## 安装
### C#
```bash
dotnet add package Clipper2 # 提供 Clipper2Lib 命名空间
```
### C++
```bash
# vcpkg
vcpkg install clipper2
# 或直接 add subdirectory CPP/Clipper2Lib 到 CMake
```
### JavaScript
```bash
npm install clipper2-js # 第三方原生 TS/JS 移植；另有 WASM 移植 js-angusj-clipper
```
---
## 核心数据结构（C#）
```csharp
using Clipper2Lib;
PointD pd = new(10.5, 20.7); // 浮点点
PathD path = new() { new(0,0), new(10,0), new(10,10), new(0,10) };
PathsD subj = new() { path }; // 多个 path
PathsD clip = new() { /* ... */ };
```
整数版本：`Point64` / `Path64` / `Paths64`，避免浮点误差。
---
## 布尔运算
```csharp
using Clipper2Lib;
PathsD a = new() { Clipper.MakePath(new[] { 0d,0, 100,0, 100,100, 0,100 }) };
…Read the whole file at its exact version.
How to install
mdr add znlgis/opengis-skills/clipper2@sha256:be68e917329d2e44The line at the top of this page pins the label git:20261014.e943c53, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_vkjuiw5s36afbps4)
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Versions
The registry has recorded 5 versions of this file, between Sep 1, 2026 and Oct 14, 2026, about one every 11 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261014.e943c53 latest | 2026-10-14 | e943c53 | 8,761 B | A | view · diff |
| git:20260922.e0d0947 | 2026-09-22 | e0d0947 | 7,599 B | A | view · diff |
| git:20260911.ad2889a | 2026-09-11 | ad2889a | 7,406 B | A | view · diff |
| git:20260909.72be554 | 2026-09-09 | 72be554 | 7,436 B | A | view · diff |
| git:20260901.fb2a04d | 2026-09-01 | fb2a04d | 7,428 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (8761 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
znlgis/opengis-skills · 70 stars · license MIT · pushed 2026-10-20 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_vkjuiw5s36afbps4 GET https://markdownregistry.com/api/v1/resolve?ref=znlgis/opengis-skills/clipper2 GET https://markdownregistry.com/api/v1/blob/be68e917329d2e4477a3f04b1d53cc96469b819baa9673243317450e6443c0fc
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.