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/* http://www.openprocessing.org/sketch/200449

THIS IS A PROCESSING SKETCH

change file suffix from .java to .pde before running

*/

int frames = 240, num = 300;
float theta;
long rs;
 
void setup() {
  size(540, 540);
  noStroke();
  rs = (long) random(12345);
}
 
void draw() {
  randomSeed(rs);
  background(20);
  for (int i=0; i<num; i++) {
    float offSet = TWO_PI/num*i;
    int dir = i%2==0?1:-1;
    float d = random(width/10,width/2);
    float x = random(width) + cos(theta+offSet)*d*dir;
    float y = random(height) + sin(theta)*d*dir;
    float sz = map(sin(theta), -1, 1, 3, 100);
    ellipse(x, y, sz, sz);
  }
  theta += TWO_PI/frames;
  //if (frameCount<=frames) saveFrame("image-###.gif");
}
 
void mouseReleased() {
  rs = (long) random(10000);
}