Function animate

test/performance/common/random-squares.js:58–80

(lastTime)

      });

      function animate(lastTime){
        stats.begin();
            // update
          var date = new Date();
          var time = date.getTime();
          var timeDiff = time - lastTime;
          var period = timeDiff/1000; //times per second, our period

          for (var i = 0; i < circles.length; i++) {
            var x = Math.round(Math.random() * width);
            var y = Math.round(Math.random() * height);

            circles[i].setPosition({x: x, y: y});

          }
          lastTime = time;

          circlesLayer.draw();
          stats.end();
          requestAnimFrame(function(){
                  animate(lastTime);
          });
      }

      function make_shape(color) {
        return new Kinetic.Rect({