Special effects with SwiftUI
summary
Builds a live particle system in SwiftUI that actually runs on device using TimelineView and Canvas, an image asset (spark.png), and Xcode 13 / iOS 15. Particles store x/y and creation date, get trimmed after one second to avoid leakage, gain per-particle hue and blend modes for rainbow and additive brightness, and can be mirrored into a kaleidoscope. Input comes from touch, Core Motion, and even headphone motion (AirPods); the demo compiles and animates interactively on-device.
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chapters (7)
- 0:00Start
- 3:04Particle System
- 5:49Timeline View
- 17:25Rainbows
- 21:29Symmetry Effect
- 22:21Drawing Loop
- 24:33Core Motion Framework
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