the HYPE Framework / Joshua Davis

import hype.*;
import hype.extended.behavior.HOscillator;
import hype.extended.colorist.HColorPool;
import hype.extended.layout.HGridLayout;

HDrawablePool pool;

void setup() {
 size(640,640);
 H.init(this).background(#242424);

 pool = new HDrawablePool(90);
 pool.autoAddToStage()
  .add(new HRect(6).rounding(2).anchorAt(H.CENTER).noStroke())
  .colorist(new HColorPool(#FFFFFF, #F7F7F7, #ECECEC, #333333, #0095A8, #00616F, #FF3300, #FF6600).fillOnly())
  .layout(new HGridLayout().startLoc(9, height/2).spacing(7, 0).cols(90))
  .onCreate(
   new HCallback() {
    public void run(Object obj) {
     int i = pool.currentIndex();
     
     HDrawable d = (HDrawable) obj;

     new HOscillator()
      .target(d)
      .property(H.HEIGHT)
      .range(6, 200)
      .speed(1)
      .freq(3)
      .currentStep(i*3)
     ;
    }
   }
  )
  .requestAll()
 ;
}

void draw() {
 H.drawStage();
}