alecjacobson
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alpha-wrap
A CGAL-free, MIT-licensed reimplementation of the Alpha Wrapping algorithm that takes a defective triangle soup and produces a watertight, manifold, outward-oriented mesh with controllable level of detail and tightness.
AI 仓库情报摘要
FR-AI / ANALYSIS为什么值得关注
它实现了接近 Git 命令行本身的性能（克隆 Linux 内核时仅慢 5%），同时体积极小、无依赖，原生支持 Git 协议，无需捆绑 libgit2、Electron 或 Web 视图。
适合谁使用
- 希望使用轻量、高性能 Git GUI 的 Windows 开发者
- 需要原生 pack 文件与协议 v2 支持的 Git 高级用户
- 对笨重或缓慢的 Electron 框架 Git 客户端感到不满的用户
- 对现代 C++20 代码库和自定义控件框架感兴趣的贡献者
典型使用场景
- 从 GUI 或命令行以接近命令行的速度克隆大型仓库（如 Linux 内核）
- 浏览本地仓库的 branch、tag、工作区状态，使用虚拟化侧边栏
- 完成暂存、提交、推送/拉取操作（基于 Smart HTTP Protocol v2），无需额外安装 Git
- 通过 GitHub OAuth 设备流程进行身份验证，凭证存储在 Windows Credential Manager 中
项目优势
- 高性能：克隆 Linux 内核（1130 万对象，6GB pack）耗时 289 秒，Git 命令行需 275 秒（仅慢约 5%），采用无锁多线程增量解析和内存映射 I/O
- 极小体积：单个约 2.5 MB 的可执行文件，无运行时依赖——无需 libgit2、无需捆绑 Git CLI、无需 Electron 或 Web 视图
- 原生 Windows 集成：Direct2D 渲染、DWM 平滑动画、Windows Credential Manager 存储令牌、无边框窗口与自定义控件框架
- 快速构建与架构支持：使用统一构建快速生成发行版；自动检测 x64 或 ARM64 并原生编译，ARM 上支持 NEON SIMD
使用前须知
- 仅支持 Windows（无 macOS 或 Linux 版本）
- 缺少重要功能：合并（merge）、变基（rebase）、挑选（cherry-pick）、二分查找（bisect）以及非快进拉取尚未实现（仅有桩代码）
- 需要 Visual Studio 2022 和 CMake 才能构建，对仅希望使用预构建二进制文件的普通用户来说门槛较高
README 快速开始
GitSmarter
A fast, native Git client for Windows in a single ~2.5 MB executable.
GitSmarter is written in C++20 and rendered entirely with Direct2D. It has no external runtime dependencies — no libgit2, no bundled git CLI, no Electron, no web view. It speaks Git natively: loose objects, pack files (.idx/.pack), delta resolution, the index, refs, and Smart HTTP Protocol v2 are all parsed and implemented directly. The result is a single small binary that holds its own against Git itself — cloning the Linux kernel (11.3M objects, 9.15M deltas, 6GB pack, 92K files) completes within 5% of the Git CLI's own time (289s vs 275s), using multithreaded lock-free delta resolution, memory-mapped I/O, and a sharded object cache.
Features
- Repository browsing — open any local repository; branches, tags, remotes, and working-tree status in a virtualized sidebar
- Staging and committing — stage/unstage files, write commits directly to the object database, rename detection with similarity scoring
- Diff viewer — inline and side-by-side modes with syntax highlighting, line numbers, and smooth animated scrolling
- Commit history graph — full history walk with branch lane assignment and colored graph visualization
- Fetch / push / pull — Smart HTTP Protocol v2 implemented from scratch, including pack generation for push and fast-forward pull; runs on a background worker thread with progress UI
- Clone — from the GUI or the command line:
GitSmarter.exe clone, with--headlessfor console-only use andowner/repo/gh:owner/repoURL shorthand - GitHub authentication — OAuth device flow with tokens stored in the Windows Credential Manager; also reads URL-embedded credentials,
.gitconfig, andGH_TOKEN/GITHUB_TOKEN - Stash — create, apply, pop, drop, and clear stashes
- Branch operations — create, switch, rename, and delete branches
- Command palette — fuzzy-matched keyboard access to every command
- Background sync — periodic fetch with ahead/behind indicators in the status bar
- Custom UI — borderless window with native DWM integration, a hand-rolled Direct2D widget framework, and a frame-driven animation system that uses near-zero CPU when idle
Building
Prerequisites
- Windows 10/11 (x64 or ARM64)
- Visual Studio 2022
项目描述
A fast, dependency-free native Git client for Windows. C++20, Direct2D, direct git-internals parsing, single ~2.5 MB executable.
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