createCanvas(400, 400);

  pointsLength = 660;

  pointsX = [];

  pointsY = [];

  fillPointsList();

  noLoop();

  print(pointsX,pointsY)

  inc = 0;

}

​

function getXVal(){

  return random(width)

}

​

function getYVal(){

  return random(height)

}

function fillPointsList(){

  for (i=0;i<pointsLength;i++){

    pointsX[i] = getXVal();

    pointsY[i] = getYVal();

  }

}

​

function getClosestPoint(arg){

  let closestPt = 0;

  let secondClosestPt = 0;

  let closestDists = [width+height];

  let closestDist = width+height;

  let secondClosestDist = width+height;

  for (let i=0;i<pointsLength; i++){

    if (i != arg){

      d = sqrt(pow(pointsX[i]-pointsX[arg],2) + pow(pointsY[i]-pointsY[arg],2));

      /*for (let j = 0; j <closestPts.length; j++){

        if (d < closestDists[j]){

          closestDists.push()

        }

      }*/

      if (d < closestDist){

        secondClosestDist = closestDist;

        secondClosestPt = closestPt;

        closestDist = d;

        closestPt = i;

      } else if (d < secondClosestDist){

        secondClosestDist = d;

        secondClosestPt = i;

      }

    }

  }

  print(closestPt)

  return [closestPt,secondClosestPt];

}

function draw() {

  background(220);

  for (let i=0;i<pointsLength;i++){

    mousePressed();

  }

}

​

function mousePressed() {

  if (inc<pointsLength){

    print(inc);

    ellipse(pointsX[inc],pointsY[inc],3,3);

    let closestI = getClosestPoint(inc);

    print(closestI)

    line(pointsX[inc],pointsY[inc],pointsX[closestI[0]],pointsY[closestI[0]]);

    line(pointsX[inc],pointsY[inc],pointsX[closestI[1]],pointsY[closestI[1]]);

    inc++;

  }

}

​