Pixelbits

<script type="text/paperscript" canvas="canvas-0012">
  view.element.style.backgroundColor = '#85144b';
  arcSize = view.size.height / 12;

  // Start with a circle...
  var arc = new Path.Circle(new Point(100, 70), arcSize);

  // And trim it down to a quarter circle.
  arc.removeSegment(3);
  arc.segments[0].handleIn.y = 0;
  arc.segments[1].handleOut.x = 0;
  arc.segments[2].handleIn.x = 0;
  arc.segments[2].handleOut.y = 0;
  arc.segments[2].point.x = 100;
  arc.fillColor = '#ffffff';

  for (y=0; y<10; y++) {
    for (x=0; x<10; x++) {
      newArc = arc.clone();
      newArc.position = new Point(x*arcSize, y*arcSize);

      switch (getRandomInt(0, 3)) {
        case 0:
          newArc.rotate(0);
          break;
        case 1:
          newArc.rotate(90);
          break;
        case 2:
          newArc.rotate(180);
          break;
        case 3:
          newArc.rotate(270);
      }

      opacity = getRandomInt(40, 95);
      if (opacity < 45) {
        opacity = 0;
      }
      newArc.fillColor.alpha = opacity/100;
    }
  }

  arc.remove();

  project.activeLayer.position = view.center;

  function getRandomInt(min, max) {
    return Math.floor(Math.random() * (max - min)) + min;
  }
</script>

<canvas id="canvas-0012" height="250"></canvas>