190407

const num = 3;

const r = 400;

let allPoints = [];

​

function setup() {

  createCanvas(800, 800);

  colorMode(HSB,360,100,100,100);

  angleMode(DEGREES);

  //blendMode(ADD);

  noLoop();

}

​

function draw() {

  background(0,0,0);

  push();

  translate(width / 2, height / 2);

  translate(0, r / 5);

  rotate(30);

  let points = [];

  for (let angle = 0; angle < 360; angle += 360 / num) {

    let x = cos(angle) * r;

    let y = sin(angle) * r;

    points.push(createVector(x, y));

    allPoints.push(createVector(x, y));

  }

  drawRecursiveTriangle(points, 3);

​

  let tempArr = [];

  for (let p of allPoints) {

    for (let q of allPoints) {

      if (p.equals(q) != true) {

        let d = p5.Vector.dist(p, q);

        if (d > r / 2) {

          let s = p5.Vector.lerp(p, q, 1 / 2);

          tempArr.push(s);

        }

      }

    }

  }

  for (let p of tempArr) {

    allPoints.push(p);

  }

​

  for (let p of allPoints) {

    for (let q of allPoints) {

      if (p.equals(q) != true) {

        let d = p5.Vector.dist(p, q);

        let angle = atan2(p.y-q.y,p.x,-q.x);

        //print(angle);

        if (d < r  && angle%45 < 0.1) {

          stroke(0,0,100,5);

          line(p.x, p.y, q.x, q.y);

        }

      }

    }

  }

​

  pop();

}

​

function drawRecursiveTriangle(_arr, _n) {

  if (_n < 0) {

    return;

  }

  for (let p of _arr) {

    //ellipse(p.x, p.y, 10);

  }

​

  let middle = [];

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

    let current = i;

    let next = (i + 1) % _arr.length;

    let p1 = _arr[current];

    let p2 = _arr[next];

    middle.push(p5.Vector.lerp(p1, p2, 1 / 2));

    allPoints.push(p5.Vector.lerp(p1, p2, 1 / 2));

  }

  drawRecursiveTriangle(middle, _n - 1);

}