var stage = acgraph.create('container');
var greenEllipse = stage.ellipse(150, 100, 100, 50);
greenEllipse.fill('#4CAF50 0.5');
var x = greenEllipse.centerX();
var blueEllipse = stage.ellipse();
blueEllipse.fill('#2196F3 0.5');
blueEllipse.centerY(210);
blueEllipse.setRadius(100, 50);