if( ( Math.abs(v1.x - v2.x) < 0.1 ) && ( Math.abs(v1.y - v2.y) < 0.1 ) ){

    return true;

  }

  return false;

}

​

class Fold{

  constructor(origin=createVector(0,0), length = 10, folds=5){

​

    this.length = length;

    this.folds = folds;

    this.foldCount = 0;

    this.points = [origin];

    this.angleSubdivs = 8;

    this.angleUnit = TWO_PI / this.angleSubdivs;

    // build the folds

    while(this.foldCount < this.folds){

      let lastPoint = this.points[this.points.length - 1];

      let r = int(random(-this.angleSubdivs, this.angleSubdivs)) *this.angleUnit; // get direction for new point

      let p = p5.Vector.fromAngle(r).setMag(this.length);

      let newPoint = p5.Vector.add(lastPoint,p);

      // check if line exists

      if(this.checkIfLineExists(newPoint)){

​

      }

      else{

        this.points.push(newPoint);

        this.foldCount++;

      }

    }

    this.center(); // center all squiggles

  }

  checkIfLineExists(v){

    let p = this.points[this.points.length-1]; // get last point

    for(let i = 1; i < this.points.length; i++){

      if( ( aequalsv(v,this.points[i-1]) && aequalsv(p,this.points[i-0]) ) ||

          ( aequalsv(v,this.points[i-0]) && aequalsv(p,this.points[i-1]) )

       ){

        return true;

      }

    }

    return false;

  }

  draw(){

    for(let i = 0; i < this.points.length - 1; i++){

      line(this.points[i].x, this.points[i].y, this.points[i+1].x, this.points[i+1].y);

    }

  }

  center(){

    // calculate barycenter

    let c = createVector(0,0);

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

      c.add(this.points[i]);

    }

    c.div(this.points.length);

    let diff = p5.Vector.sub(this.points[0],c);

    //move all points

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

      this.points[i].add(diff);

    }  

  }

}

​

​

function setup() {

  createCanvas(700, 700);

  frameRate(0.8);

}

​

function draw(){

    angleMode(DEGREES);

  rectMode(CENTER);

​

  noStroke();

  linearGradient(

    width/2-50, 0, //Start point

    width/2+50, height, //End point

    color('#A6D1E6'), //Start color

    color('#645CAA'), //End color

​

  );

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

  stroke(255)

  strokeWeight(2);

  let folds = []

  let xlength = 10;

  let ylength = 10;

  let padding = width / (xlength + 1);

  let x = padding;

  for(let i = 0; i < xlength; i++){

let y = padding;

    for(let j = 0; j < ylength ; j++){

      let o = createVector(x, y);

      let fold = new Fold(o);

      fold.draw();

      y += padding

    }

    x += padding

  }

}

​

  function linearGradient(sX, sY, eX, eY, colorS, colorE){

  let gradient = drawingContext.createLinearGradient(

    sX, sY, eX, eY

  );

  gradient.addColorStop(0, colorS);

  gradient.addColorStop(1, colorE);

  drawingContext.fillStyle = gradient;

  }

​

​

​