Coding Challenge #30: Phyllotaxis

In this coding challenge, I continue one of my favorite subjects: Algorithmic botany! This video covers the subject of Phyllotaxis, what it is and how it can be used to generate sunflower-like patterns inspired by nature. Code: https://thecodingtrain.com/challenges/30-phyllotaxis

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? Previous video: https://youtu.be/bGz7mv2vD6g?list=PLRqwX-V7Uu6ZiZxtDDRCi6uhfTH4FilpH
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References:
? Phyllotaxis on Wikipedia: https://en.wikipedia.org/wiki/Phyllotaxis
? Algorithmic Botany - Phyllotaxis: http://algorithmicbotany.org/papers/abop/abop-ch4.pdf

Videos:
? Algorithmic Botany: https://thecodingtrain.com/tracks/algorithmic-botany
? Polar to Cartesian Coordinates: https://youtu.be/O5wjXoFrau4
? Golan Levin's Modulo Operator video: https://www.youtube.com/watch?v=r5Iy3v1co0A
? Live Stream Archive #54: https://youtu.be/MQMJ0xWSMWE

Related Coding Challenges:
? #14 Recursive Fractal Trees: https://youtu.be/0jjeOYMjmDU
? #15 Object-Oriented Fractal Trees: https://youtu.be/fcdNSZ9IzJM
? #16 Fractal Trees - L-System: https://youtu.be/E1B4UoSQMFw
? #81 Circle Morphing: https://youtu.be/u2D4sxh3MTs
? #133 Times Tables Cardioid Visualization: https://youtu.be/bl3nc_a1nvs
? #134 Heart Curve: https://youtu.be/oUBAi9xQ2X4

Timestamps:
0:00 Introduction
1:26 The phyllotaxis formulas
4:41 Add a dot with a specific angle and radius
5:27 Add formula for polar to cartesian coordinates
6:45 Scaling factor
7:38 Change the angle to render different patterns
8:29 Change to angleMode()
9:00 Change color mode to HSB
9:29 Cycle through the colors using modulus
10:4 Other creative possibilities

Editing by Mathieu Blanchette
Animations by Jason Heglund
Music from Epidemic Sound

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#algorithmicbotany #phyllotaxis #generativeart #p5js #javascript