Layer layer = getLayer(layerId);
if (layer == null) {
layer = new LayerJava2D(this, layerId, b);
id2Layer.put(layer.getLayerId(), layer);
layer.setFillColor(Color.TRANSPARENT);
layer.clearRect(0, 0, layer.getWidth(), layer.getHeight());
}
return layer;
}
public LinearGradient createLinearGradient(double startx, double starty,