Rectangle r = this.getBounds().getCopy();

setConstraint(getLabelFigure(), new Rectangle(0, 0, (int)(r.width*0.9), (int)(r.height*0.1)));
getLabelFigure().invalidate();

// ellipse starts where label ends and fill the rest 90% in height and width
setConstraint(getEllipseFigure(), new Rectangle(0, (int)(r.height*0.1), (int)(r.width*0.9), (int)(r.height*0.9))); 
getEllipseFigure().invalidate();

MyNodeFigure figure = (MyNodeFigure) getFigure();
		
// set constraints for ellipse
Point location = figure.getEllipseFigure().getLocation();
Dimension size = figure.getEllipseFigure().getSize();
GraphEditPart graph = (GraphEditPart) getParent();
Rectangle constraint = new Rectangle(location, size);
graph.setLayoutConstraint(this, figure, constraint);