Unfolding

float angle, radius, lx, ly, sz = 5;

int num = 40;

PVector[] dots = new PVector[num];

PVector[] endPos = new PVector[num];

​

void setup() {

  size(500, 500);

  background(20);

  fill(#FFA41A);

  noFill();

  stroke(#FFA41A);

  strokeWeight(2);

  strokeJoin(ROUND);

  radius = width*.4;

​

  for (int i=0; i<num; i++) {

    float x = random(width*.33, width*.66);

    float y = random(height*.33, height*.66);

    dots[i]= new PVector(x, y);

  }

​

  for (int i=0; i<num; i++) {

    float px = width/2 + sin(angle)*radius;

    float py = height/2 + cos(angle)*radius;

    endPos[i]= new PVector(px, py);

    angle+=TWO_PI/num;

  }

}

​

void draw() {

  background(20);

  beginShape();

  for (int i=0; i<num; i++) {

    dots[i].x = lerp(dots[i].x, endPos[i].x, 0.02);

    dots[i].y = lerp(dots[i].y, endPos[i].y, 0.02);

    if (i==0) vertex(dots[i].x, dots[i].y);

    vertex(dots[i].x, dots[i].y);

    if (i==num-1) vertex(dots[i].x, dots[i].y);

  }

  endShape(CLOSE);

  if (frameCount%241==0) {

    for (int i=0; i<num; i++) {

    float x = random(width*.33, width*.66);

    float y = random(height*.33, height*.66);

    dots[i]= new PVector(x, y);

  }

  }

}