@Override
public void draw(Graphics g, int index1, int index2) {
// draw containers
if (hasContainers(index1, index2)) {
System.out.println("Has containers");
Image buffer = _panel.createImage(_panel.getWidth() - 6, _panel.getHeight() / 2 - 6);
Graphics2D bufferGraphics = (Graphics2D) buffer.getGraphics();
bufferGraphics.setRenderingHint(
RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
bufferGraphics.setColor(Color.white);
bufferGraphics.fillRect(0, 0, _panel.getWidth(), _panel.getHeight() / 2);
drawContainers(bufferGraphics, index1, index2);
BAR_GRAPH.addImage(buffer);
}
BAR_GRAPH.drawBuckets(true);
BAR_GRAPH.draw(g, index1, index2);
BAR_GRAPH.addImage(null);
}