Coding Challenge #60: Butterfly Generator

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Published on February 27, 2017 2:54:51 PM ● Video Link: https://www.youtube.com/watch?v=O_0fRV4MTZo

Duration: 20:50

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Inspired by Everest Pipkin’s Moth Generator, I use trigonometry and perlin noise to procedurally generate butterfly wing designs with p5.js. Code: https://thecodingtrain.com/challenges/60-butterfly-generator

🕹️ p5.js Web Editor Sketch: https://editor.p5js.org/codingtrain/sketches/tKBc2fP8r

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References:
🖋️ Moth Generator: https://twitter.com/mothgenerator
🗄 Rose (mathematics) on Wikipedia: https://en.wikipedia.org/wiki/Rose_(mathematics)

Videos:
🎥 Trigonometry and Polar Coordinates - The Nature of Code: https://youtu.be/znOBmOrtz_M
🎥 What is Perlin Noise?: https://www.youtube.com/playlist?list=PLRqwX-V7Uu6bgPNQAdxQZpJuJCjeOr7VD
🔴 Live Stream Archive #80: https://youtu.be/bMOv5vTC9uE?t=3431s

Related Coding Challenges:
🚂 #36 Blobby!: https://youtu.be/rX5p-QRP6R4
🚂 #55 Mathematical Rose Patterns: https://youtu.be/f5QBExMNB1I
🚂 #134 Heart Curve: https://youtu.be/oUBAi9xQ2X4
🚂 #136 Polar Noise Loops: https://youtu.be/ZI1dmHv3MeM

Timestamps:
0:00 Introduce coding challenge
0:17 Highlight project which inspires the coding challenge
1:13 Explain symmetrical drawing and polar coordinates
2:45 Let's code
3:04 Draw one of the butterfly's wings
4:09 Translate canvas to center the drawing
4:41 Draw points
5:25 Draw the wing with a line
6:18 Introduce Perlin Noise
7:08 Implement Perlin Noise
8:23 Experiment with noise arguments
9:06 Draw the other wing symmetrically
10:55 Draw a continous shape
13:20 Highlight math to draw roses with polar coordinates
13:49 Include math in the coding challenge
14:44 Reintroduce noise
15:26 Experiment with different values
16:06 Animate drawing changing the noise values
16:45 Implement Perlin Noise in multiple dimensions
18:00 Conclude coding challenge
18:40 Consider comments from the chat

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

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🔗 p5.js: https://p5js.org
🔗 p5.js Web Editor: https://editor.p5js.org/
🔗 Processing: https://processing.org

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#butterflywings #perlinnoise #polarcoordinates #javascript #p5js