// Weighted Voronoi Stippling

// https://thecodingtrain.com/challenges/181-image-stippling

​

let seedPoints = [];

​

let delaunay;

​

function setup() {

  createCanvas(400, 400);

  for (let i = 0; i < 100; i++) {

    seedPoints[i] = createVector(random(width), random(height));

  }

  delaunay = calculateDelaunay(seedPoints);

}

​

function draw() {

  background(255);

​

  for (let v of seedPoints) {

    stroke(0);

    strokeWeight(4);

    point(v.x, v.y);

  }

​

  noFill();

  strokeWeight(1);

  console.log(delaunay.triangles);

  let { points, triangles } = delaunay;

  for (let i = 0; i < triangles.length; i += 3) {

    let a = 2 * delaunay.triangles[i];

    let b = 2 * delaunay.triangles[i + 1];

    let c = 2 * delaunay.triangles[i + 2];

    triangle(

      points[a],

      points[a + 1],

      points[b],

      points[b + 1],

      points[c],

      points[c + 1]

    );

  }

}

​

function calculateDelaunay(points) {

  let pointsArray = [];

  for (let v of points) {

    pointsArray.push(v.x, v.y);

  }

  return new d3.Delaunay(pointsArray);

}

​