When you're building interactive PixiJS applications and need to work with transforms, hit detection, or layout math, this skill covers the library's core primitives. It handles Point and ObservablePoint (the reactive wrapper behind Container's position and scale properties), Matrix operations for coordinate transforms, and all the shape classes (Rectangle, Circle, Polygon, etc.) that power hitArea and bounds calculations. The source includes practical patterns for toGlobal/toLocal coordinate conversion, Rectangle layout helpers like pad and enlarge for UI work, and references to pixi.js/math-extras for vector operations and intersections. It's solid reference material for anyone moving beyond basic sprite positioning into custom interactions or camera systems.
npx skills add https://github.com/pixijs/pixijs-skills --skill pixijs-math