final int height = 500;
ArrowMaster master = new ArrowMaster(params);
BufferedImage img;
DarstModEA dar = new DarstModEA(0, 0, width, height);
DargestellterGraph darGraph = dar.erzeuge(this, null);
List<Object> drawList = master.graph(darGraph);
img = Geometry2D.erzBuffImgAusObjekten(drawList);
return img;
}