Centroid fractal

function setup()

{

  triangles = []

  createCanvas(windowHeight, windowHeight)

  background(230)

  point1 = new dotpoint(width/2, height/9), point1.draw(0,5)

  point2 = new dotpoint(width/19, height*4/5), point2.draw(0,5)

  point3 = new dotpoint(width*18/19, height*4/5), point3.draw(0,5)

  triangles.push([point1, point2, point3])

}

​

function draw()

{

  for (k=99; k--;)

  {

    centerX = (point1.x + point2.x + point3.x)/3

    centerY = (point1.y + point2.y + point3.y)/3

    center = new dotpoint(centerX, centerY), center.draw(10, .1)

    triangles.push([point1, point2, center])

    triangles.push([point2, point3, center])

    triangles.push([point1, point3, center])

    dotconnect(point1, point2, 20, .01)

    dotconnect(point2, point3, 20, .01)

    dotconnect(point3, point1, 20, .01)

    nTri = triangles[round(random(0,triangles.length-1))]

    point1 = nTri[0]

    point2 = nTri[1]

    point3 = nTri[2]

  }

  triangles.length=1

}

​

function dotpoint(x, y)

{

  this.x = x, this.y = y

  this.draw = function(color, size)

  {

    fill(color)

    ellipse(this.x, this.y, size, size)

  }

}

​

function dotconnect(origin, dest, color, size)

{

  stroke(color)

  strokeWeight(size)

  line(origin.x, origin.y, dest.x, dest.y)

  noStroke()

}