3 colores

//let colors = ['#ff0000', '#00ff00', '#0000ff'];

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let colors   =  ["#ff0000","#feb30f","#0aa4f7","#000000","#ffffff"];

​

let PALETTE;

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let nPoints = 200;

​

let vertices = new Array(nPoints);

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let triangles;

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let borde = -200;

​

function setup() {

   createCanvas(1000,1000);

   rectMode(CENTER);

   noLoop();

   //smooth(5);

}

​

function draw() 

{

  fill(0);

  rect(width/2,height/2,width,height);

  generatePoints();

  triangulate();

}

​

​

// generate random points

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function generatePoints() {

​

   let i = 0;

​

   while (i < nPoints)

   {

       let x = random(borde,width-borde);

       let y = random(borde,height-borde);

       vertices[i] = [x,y];

       i++;

   }

​

   triangles = Delaunay.triangulate(vertices);

}

​

​

// delaunay triangulation goes wrong 

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function triangulate() {

​

  let t = floor(random(100,150));

  addBlur();

  curveTightness(3);

​

  for(i = triangles.length; i; )

  {

      --i;

      let p1X = vertices[triangles[i]][0];

      let p1Y = vertices[triangles[i]][1];

      vertex(p1X,p1Y);

      --i;

      let p2X = vertices[triangles[i]][0];

      let p2Y = vertices[triangles[i]][1];

      vertex(p2X,p2Y);

      --i;

      let p3X = vertices[triangles[i]][0];

      let p3Y = vertices[triangles[i]][1];

​

      let centroidX = floor((p1X + p2X + p3X)/3.0);

      let centroidY = floor((p1Y + p2Y + p3Y)/3.0);

​

      PALETTE = shuffle(colors, true);

      PALETTE = PALETTE.slice(0, 3);  

      patternColors(shuffle(PALETTE));

      pattern(randPattern(t));

      patternAngle(random(0,2*PI));

      beginShapePattern();

      curveVertexPattern(p1X,p1Y);

      curveVertexPattern(p2X,p2Y);

      curveVertexPattern(p3X,p3Y);

      endShapePattern(CLOSE);

      noFill();

      stroke(255);

      strokeWeight(4);

      beginShape();

      curveVertex(p1X,p1Y);

      curveVertex(p2X,p2Y);

      curveVertex(p3X,p3Y);

      endShape(CLOSE);

​

  }

}

​

function addBlur()

{

  drawingContext.shadowOffsetX = -1;

  drawingContext.shadowOffsetY = -1;

  drawingContext.shadowBlur = 5;

  drawingContext.shadowColor = 'black';

}

​

​

// based on https://openprocessing.org/sketch/1278485

​

function randPattern(t)

{

  const ptArr = [

    PTN.stripe(t / int(random(6, 12))),

    PTN.stripePolygon(int(random(3, 7)),  int(random(6, 12))),

    //PTN.stripeRadial(TAU /  int(random(6, 30))),

    //PTN.wave(t / int(random(1, 3)), t / int(random(10, 20)), t / 5, t / 10),

    PTN.checked(t / int(random(5, 20)), t / int(random(5, 20))),

    //PTN.cross(t / int(random(10, 20)), t / int(random(20, 40))),

  ]

  return random(ptArr);

}

​