Using Swift to Visualize Algorithms

on YouTube ↗21m

" summary

Builds a live UIBezierPath reimplementation in Swift playgrounds that visualizes the De Casteljau construction for a cubic Bezier and for arbitrary N control points, computes points by linear interpolation (lerp) using T in [0,1], draws intermediate line segments and the final yellow point, overlays the built-in UIBezierPath to verify exactness, animates strokeEnd to show drawing, and demonstrates the tradeoff between T increment (smoothness) and speed plus a subdivision optimization that fixes performance.

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" chapters (10)

1. 0:00Intro
2. 0:55Bezier Curve
3. 3:41boilerplate code
4. 4:23Xcode
5. 5:08Draw Bezier Parts
6. 13:47Draw Lines Between
7. 16:15Zip
8. 17:25Interp
9. 18:08Multiple Control Points
10. 20:03Conclusion

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