Applying Matrix4 Transformations in Flutter
summary
Uses Matrix4 from vector_math as a 4x4 (16 doubles) transform to combine translate, scale and rotate into one pipeline, showing concrete code: translate(x:50), rotateC(pi/4) and rotateX(animation to 4π for two full flips), and a scale tween 1.0→1.3→1.0. Demonstrates tap-to-translate via GestureDetector, pinch-to-zoom using focal point deltas, and fixing visual bugs by reordering operations (translate before rotate/scale). Highlights Matrix4 (4x4, 16 doubles), Transform widget wrapping child, and compositing-only GPU transforms for maximal performance.
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chapters (13)
- 0:00Matrix4 in Flutter
- 1:06Flutter coordinate system
- 6:58Matrix4 fundamentals
- 9:48Transform widget API
- 10:30Translating with Matrix4
- 11:55Scaling with Matrix4
- 13:00Rotating with Matrix4
- 15:09Skewing and perspective
- 16:13Order in transformations
- 17:41Matrix4 performance
- 19:50Flipping coin demo
- 25:09Global Comics examples
- 30:45Summary
