"People Around" in SpriteKit: distance rings, finger inertia, and avatar virtualization

▤ Summary

This article explains how to build a circular avatar interface in iOS using SpriteKit. It covers ring-based avatar placement, touch-driven inertia, and virtualized loading so only visible avatars stay in memory. The code examples show how to calculate positions on arcs, animate rotation, and reuse avatar nodes efficiently. The piece also contrasts SpriteKit with UIKit and shows how the approach can support a smoother, more interactive UI.

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