int samplesPerFrame = 5;
int numFrames = 500;        
float shutterAngle = 1.5;

boolean recording = true;

int n = 1000;

float ease(float p, float g) {
  if (p < 0.5) 
    return 0.5 * pow(2*p, g);
  else
    return 1 - 0.5 * pow(2*(1 - p), g);
}


class Thing{
  float size = random(1,15);
  float offset = random(0, 0.6);
  float theta;
  float de = random(5, 20);
  
  Thing(float theta_){
    theta = theta_;
  }
  
  void show(){
    stroke(255,100);
    strokeWeight(size);
    float t = 1.0*(frameCount-1)/numFrames;
    float t2 = ease(t, 8);
    float radius = 150 + 200*sin(TWO_PI*t2 + offset);
    // right side
    float x = 250 + radius*cos(theta)*cos(theta) + noise(0.04);
    float y = 250 + radius*sin(theta) + noise(0.02);
    point(x, y);
    // left side
    // throw on an easing function or delay here?
    float x2 = 250 - radius*cos(theta)*cos(theta) + noise(0.04);
    float y2 = 250 - radius*sin(theta) + noise(0.02);
    point(x2, y2);
  }
}

Thing[] array = new Thing[n];

void setup(){
  size(500, 500, P3D);
  
  for(int i=0;i<n;i++){
    float theta = TWO_PI*i/n;
    array[i] = new Thing(theta);
  }
}

void draw(){
  background(0);

  float t = 1.0*(frameCount-1)/numFrames;
  stroke(255 * sin(TWO_PI*t), 0 * cos(TWO_PI*t), 255 * cos(TWO_PI*t));
  strokeWeight(10 + 10*sin(TWO_PI*t));

  point(250,250);
  for(int i=0;i<n;i++){
    array[i].show();
  }

  if (frameCount<=numFrames){
    saveFrame("fr###.png");
  }
}