Visualization toolmaker. Founder @observablehq. Creator @d3. Former @nytgraphics. Pronounced BOSS-tock.
Guided Tour of an Infinite Sphere GridCreating a Canvas Noise Map for Generative Art012 Truchet tiles014 Joy Division016 Some TrianglesConnections 2Stacking Polygons In A CircleSplitting LinesBulge IllusionPerlin Noise ContoursTruchet Tiles variant: Intertwined quarter circlesGetting Artsy With LloydUlam SpiralOil painting brushstrokesRotating VoronoiBridget Riley 3SphoiseTriangles And CirclesYvaral IITwo GridsRandomized Flood FillOrientedTrefoilsMeandering VoronoiVoronoi StipplingEyesSubstrateIncremental Drift (Rose Equation)Circles, Spirals and SunflowersVoronoi Stained Glass PortraitsYvaralMy first Observable Notebook - Art of πQuadtree ArtFitzHugh–Nagumo MazeBridget RileyStructure de QuadrilatèresFractal TreePencil TraceAltered World
Voronoi Spirals II
canvas = {
const context = DOM.context2d(width, height);
let polygons = Array.from(new d3.Delaunay(points).voronoi([0, 0, width, height]).cellPolygons());
context.globalAlpha = 0.15;
context.lineWidth = 0.45;
while (polygons.length) {
context.beginPath();
polygons = polygons.filter(P => {
context.moveTo(...P[0]);
for (let j = 1, m = P.length; j < m; ++j) context.lineTo(...P[j]);
context.closePath();
const p0 = P.shift();
const p1 = P[0];
const dx = p1[0] - p0[0];
const dy = p1[1] - p0[1];
const l = Math.hypot(dx, dy);
const t = Math.min(0.5, 4 / l);
const p2 = [p0[0] + dx * t - dy / (l * 2), p0[1] + dy * t + dx / (l * 2)];
if (Math.hypot(p2[0] - p1[0], p2[1] - p1[1]) > 1) P.push(p2);
return -d3.polygonArea(P) > 1;
});
context.stroke();
yield context.canvas;
}
}
points = replay, Array.from({length: n << 1}, (_, i) => Math.random() * (i & 1 ? height : width))
n = 100
height = Math.max(600, width)
d3 = require("d3-delaunay@4", "d3-polygon@1")
Purpose-built for displays of data
Observable is your go-to platform for exploring data and creating expressive data visualizations. Use reactive JavaScript notebooks for prototyping and a collaborative canvas for visual data exploration and dashboard creation.
