Changing a Graphics2D object into a BufferedImage

Question

Well subject says it all really. At some point in my code I extract a Graphics2D object from another object, and I'd like to store it as a BufferedImage. The code below does almost what i want, but not quite.
BufferedImage img;
GraphicsConfiguration gc = this.getGraphicsConfiguration();
this.img = gc.createCompatibleImage(getWidth(), getHeight(), BufferedImage.OPAQUE);
Graphics2D g2d = img.createGraphics();
This is the only hint I've been finding around the forums, and it works well if you just want to draw new drawings on a BufferedImage. However, I have a Graphics2D object that already contains alot of graphics, and I want to copy this into a BufferedImage. I can't seem to find a way to do this no matter where i look.
Any help would be appreciated.

Answer 1

reading through alot of code will be alot more work than a simple explanation of the problemA good SSCCE is many times easier to understand than a description.
That said, if I understand what you are trying, I assume you have a paintComponent override in nr1 that has a drawImage statement, and you want to obtain a part of that image in nr2 which is in a different class, to a BufferedImage in the same class as nr2.
If that's it, you can construct a BufferedImage of appropriate size and call the paintComponent method of nr1 with the Graphics reference of the BufferedImage, translated or otherwise transformed if necessary, to paint the panel's painting on the BufferedImage. Something like (in the class containing nr2)
BufferedImage bi = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
Graphics2D g = bi.createGraphics());
g.translate(x, y); // optional
g.setClip(x1, y1, w1, h1); // optional
nr1.paintComponent(g);Note that you need a reference to panel nr1 in the class containing nr2.
Now (even if this is not what you needed) which was easier to understand -- the description above or the code? So if that's not it, don't expect anything more without a SSCCE which only demonstrates the problem faced -- not 500 lines of code that have nothing to do with the problem.
luck, db