Color black = new Color(gc.getDevice(), 0, 0, 0);
gc.setBackground(black);
gc.fillRectangle(gc.getClipping());
black.dispose();
Image image = new FastBackgroundRenderer(DEM, shading, mapInstance, colors, device).render();
gc.drawImage(image, 0, 0);
gc.setForeground(new Color(gc.getDevice(), 255, 0, 0));
for(int x = 0; x < mapInstance.width; x++) {