IDimension size = gaService.calculateSize(ga);
if (containerHeight != size.getHeight()) {
if (ga instanceof Polyline) {
Polyline line = (Polyline) ga;
Point firstPoint = line.getPoints().get(0);
Point newPoint = gaService.createPoint(firstPoint.getX(), containerHeight);
line.getPoints().set(1, newPoint);
} else if (ga instanceof Text) {
gaService.setHeight(ga, containerHeight);
}
}