Coding Challenge 181: Weighted Voronoi Stippling

Stippling is an artistic technique that uses numerous dots to craft an image. In this coding challenge I attempt to implement a weighted Voronoi stippling algorithm with p5.js along with the Delaunay triangulation package from d3.js. Code: https://thecodingtrain.com/challenges...

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p5.js Web Editor Sketches:
🕹️ Weighted Voronoi Stippling: https://editor.p5js.org/codingtrain/s...
🕹️ Circumcircle: https://editor.p5js.org/codingtrain/s...
🕹️ Delaunay Triangulation: https://editor.p5js.org/codingtrain/s...
🕹️ Voronoi Diagram: https://editor.p5js.org/codingtrain/s...
🕹️ Voronoi Phyllotaxis: https://editor.p5js.org/codingtrain/s...
🕹️ Voronoi Diagram colored by area: https://editor.p5js.org/codingtrain/s...
🕹️ Lloyd's relaxation: https://editor.p5js.org/codingtrain/s...
🕹️ Weighted Stippling - Size and Color: https://editor.p5js.org/codingtrain/s...
🕹️ Weighted Stippling - Abstract Pattern: https://editor.p5js.org/codingtrain/s...
🕹️ Weighted Stippling - Video: https://editor.p5js.org/codingtrain/s...

🎥 Previous:    • Coding Challenge 180: Falling Sand  
🎥 All:    • Coding Challenges  

References:
🔗 d3-delaunay: https://d3js.org/d3-delaunay
🔗 Weighted Voronoi Stippling: https://www.cs.ubc.ca/labs/imager/tr/...
🔗 Sweep Line Algorithm: https://en.wikipedia.org/wiki/Sweep_l...
🔗 Lloyd's algorithm: https://en.wikipedia.org/wiki/Lloyd%2...
🔗 Polygons and meshes by Paul Bourke: https://paulbourke.net/geometry/polyg...
🎨 Pablo Jurado Ruiz:   / pablojuradoruiz  
🔗 Stippling: https://en.wikipedia.org/wiki/Stippling
🔗 Voronoi Diagram: https://en.wikipedia.org/wiki/Voronoi...
🔗 Delaunay Triangulation: https://en.wikipedia.org/wiki/Delauna...
🔗 Mike Bostock's Voronoi Stippling: https://observablehq.com/@mbostock/vo...

Videos:
🚂 Pixel Array:    • 11.3: The Pixel Array - p5.js Tutorial  

Related Coding Challenges:
🚂 C4 Worley Noise:    • Coding Worley Noise  
🚂 33 Poisson-disc Sampling:    • Coding Challenge #33: Poisson-disc Sa...  

Timestamps:
0:00 Hello!
0:37 What is a Delaunay triangulation?
2:31 d3-delaunay package
2:49 Coding the delaunay triangulation.
6:38 What is a Voronoi diagram?
9:17 voronoi function on the delaunay object
10:25 Things you could try with the Voronoi diagram
10:56 Lloyd's "relaxation" algorithm
12:07 Calculate the average of a polygon's vertices
15:30 Calculate the area of a polygon
16:45 Calculate the proper centroid of a polygon
18:47 What is stippling?
19:45 Draw dots based on brightness value of pixel
21:50 Calculate a weighted centroid
24:51 Using delaunay.find()
27:52 Ideas for you to try!
28:47 Goodbye!

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

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🎥 Coding Challenges:    • Coding Challenges  
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🔗 p5.js: https://p5js.org
🔗 p5.js Web Editor: https://editor.p5js.org/
🔗 Processing: https://processing.org

📄 Code of Conduct: https://github.com/CodingTrain/Code-o...

This description was auto-generated. If you see a problem, please open an issue: https://github.com/CodingTrain/thecod...

#delaunaytriangulation #imagestippling #voronoi #sweepalgorithm #lloydsalgorithm #p5js #javascript