A convenient method for doing a hittest from a screen coordinate through a threejs camera.

简单2D碰撞检测

bapbong — caret/selection math over ResolvedLayout (hit-test, caret rect, selection rects)

Checks whether a THREE.Geometry intersects with a primitive shape

application evidence providers for Termwright framework probes

Pure 2D geometry — vectors, matrices, bounds, color and intersection. L0, no DOM, no dependencies.

Retained-mode AppKit backend for Node.js: Core Animation (CALayer) layer trees, CoreText layout and drawing, IOSurface presentation, NSMenu, and native control bezels — the macOS half of react-x11.

Pointer drag/drop, resize, mirror and auto-scroll primitives for professional scheduler UIs. DOM, no framework.

uSketch v2 の shape プラグインを書くときに使う共通ユーティリティ集。 サードパーティが `@acme/usketch-plugin-shape-foo` のような独自 shape プラグインを実装する際、bounds 計算・ヒットテスト・リサイズ・GPU primitive の差し込みをここから取ってくる想定。

TypeScript port of paper.js path geometry — no DOM, no canvas, no SVG.

Runtime for **container shapes** — shapes whose `ShapeDefinition` declares a `container` object. It supplies the parentId-based container mechanics that a shape definition can't express on its own:

Headless video-editor infrastructure for the vos programmatic video engine — patch-based document store (undo/redo/coalescing), live-edit classifier, editor-mode bridge client (element picking & drag preview), commit helpers, and timeline view-model math.

RPG マップ・タイルペイントプラグイン。community ページ（ワールドマップ空間）で、 手描きワイヤーフレーム調の地形タイルを塗り、ランドマーク/オブジェクト/マーカーの アイコンを配置できる。

## 如何使用

Goodboys Awesome Entity Component based HTML5 game engine

这个插件的目的是将 xml 和 css 都放入 jsx 或者 tsx 中，当然这不一定符合你的习惯，选择使用即可；

Mouse event dispatch for Pi's fullscreen TUI: Component.onMouse, a global mouse event channel, and handler slots for other extensions.

A Leaflet Plugin that renders Mapbox Vector Tiles on HTML5 Canvas.

auto-hwp engine as WebAssembly: open .hwp/.hwpx in the browser, render pages to SVG, edit via Intent JSON, export HTML/PDF/HWPX. No LLM, no filesystem, no bundled fonts.

Domain-neutral visual primitive engine for the web. Declarative SVG diagram/math primitives, draggable handles, a math↔pixel coordinate system, a motion core + energy effect defs, theming, pure sim cores, and a small kit of neutral glyph primitives. React