Coding Challenge #127: Brownian Tree Snowflake

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Published on December 24, 2018 3:28:38 PM ● Video Link: https://www.youtube.com/watch?v=XUA8UREROYE

Duration: 19:25

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In this holiday coding challenge, I create a "Brownian Tree Snowflake" in Processing (Java). This video was recorded as part of a fundraiser for the Processing Foundation. Code: https://thecodingtrain.com/challenges/127-brownian-tree-snowflake

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References:
💰 Support the Processing Foundation: https://processingfoundation.org/support/
💾 Code Golf - Draw a Snowflake: https://codegolf.stackexchange.com/questions/42506/draw-a-snowflake
❄️ Snowflake: https://www.flickr.com/photos/golanlevin/sets/72157594387404319

Live Stream Archive:
🔴 Coding Train Live Holiday Telethon 2018: https://youtu.be/WACLmPBxMaw?t=2392s

Related Coding Challenges:
🚂 #34 Diffusion-Limited Aggregation: https://youtu.be/Cl_Gjj80gPE
🚂 #52 Random Walker: https://youtu.be/l__fEY1xanY
🚂 #128 SketchRNN Snowflakes with ml5.js: https://youtu.be/pdaNttb7Mr8
🚂 #129 Koch Fractal Snowflake: https://youtu.be/X8bXDKqMsXE
🚂 #155 Kaleidoscope Snowflake #SupportP5: https://youtu.be/R3C2giDfmO8

Timestamps:
0:00 Introduction
0:51 Brownian tree
1:46 Diffusion Limited Aggregation
2:18 Snowflakes have a hexagonal pattern
3:52 Create a Particle class
4:52 Add a random walk to the particle
6:19 Translate to the center
7:02 Make an array of snowflakes
8:00 Write a finished function
9:05 Write an intersects function
11:04 Add kaleidoscope
13:18 Edit code to add a vector
14:00 Constrain particle to a slice of the hexagon
15:52 Speed up the animation
16:43 Improve branching
17:33 Randomize the starting position
18:10 Conclusion and creative possibilities
19:05 Please consider supporting the Processing Foundation!

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

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#browniantreesnowflake #snowflakegenerator #diffusionlimitedaggregation #processing