drawing to buffer + flip to window

>i want to draw to a 2d array
You can do that only since JDK1.2 by using BufferedImage.getGraphics() and then either using PixelGrabber or calling Raster.getPixels() on the BufferedImage's Raster to obtain the pixel values in the form of an int array (32 bits).
>flip the array to the screen (to a size-fixed window)
Just draw the BufferedImage on a showing Window.
>hell-fast (if possible)
Well, you don't really control it using the method I described.

Alternatively, since JDK1.0, you can implement your own drawing procedures, which would draw into an int array. You would then convert the array into an Image using Toolkit.createImage(ImageProducer) and MemoryImageSource.

To make the drawing as fast as possible, I recomment creating an offscreen Image using Component.createImage(int, int) - painting the actual image on it once and then painting the offscreen image on the screen every time (instead of the actual image).

Sasha Maryanovsky.

very good. any code ? i tried to use these createImage-things (and others), but i couldn't get them working.

For which one of the ways? 1.1 or 1.2 compatible?

Sasha Maryanovsky.

i've got 1.2, but you can do it also for 1.1. your decision

Well, 1.2 it's pretty easy:

int width = 300;
int height = 300;
BufferedImage img = new BufferedImage(width,height,BufferedImage.TYPE_INT_RGB);
Graphics g = img.getGraphics();
// Do various painting on the Graphics here.
int [] pixels = img.getRGB(0,0,width,height,null,0,width);

After this, "pixels" contains all the pixel values in aRGB format.

For 1.1, you will have to implement your own drawing routines, which is quite difficult, and I'm not going to explain this here :-)

Sasha Maryanovsky.

Umm, note that I didn't test this code, so it may be wrong :-)

Sasha Maryanovsky.

hi !
guess this website may help u...

http://java.sun.com/docs/books/tutorial/2d/images/index.html

hope it helps..:)

i can really use that. thanks. a small detail : i want to draw only single pixels (and fill the whole buffer with them). any fast possibilities ?

sorry, finally i can't really use that. i just want a complete piece of code, which creates a non-resizable window and draws an (pixel based & flickerless) animation within.

dunno, the project was done now without this and i can code java a bit now...