Im making a lemming game, and want to use a collision mask "image" for collision detection, ala worms. I have a material-interface wich contains 8 diffrent materials a pixel can be (byte), and each material have a int describing its color (int rgb). I have a 2-dimension-array, byte[width][height] for the pixels on the screen. When debugging i want to print the pixels in the right color on my screen (swing, jpanel). Since graphics didnt have a way to draw/fill a point/pixel, i tried with creating rectangles with the size 1x1 and graphics.setColor() before i fill the rectangle:

for (..) {
 for (..) {
  g.setColor( new Color( int[][] ) )
  g.fillRect( x, y, 1, 1);
 }
}
 

Doing it this way, it was very slow and used 99% of my cpu, since i call the paint method every 80 ms, and does this each time.. I then tried to make a Image with ImageIcon(byte[]), and also testet with bufferedImage/Raster, but i had problems getting it to work. My question is this: 1: What is the best way to display my array of pixels? Is there 2: Is there any tutorials or codes i can look at who does this? (I tried gooogling for a few hours, but didnt find anything usefull) 3: Any good hints for my collision mask? [edited by - Eventh on April 22, 2004 7:38:51 AM] [edited by - Eventh on April 22, 2004 7:39:26 AM] [edited by - Eventh on April 22, 2004 7:39:55 AM]

Thanks for the reply, with a collision mask i mean a bitmap or something like that. Not realy sure what its called.

Answer to the first question

// create graphics context and imageGraphics graphics = getGraphics();BufferedImage image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);DataBufferInt data = (DataBufferInt)(image.getRaster().getDataBuffer());// get the framebufferint pixel[] = data.getData();// manipulate the pixels like thispixel[x+width*y] = (r<<16) | (g<<8) | b;// paint framebuffer on screengraphics.drawImage(image,0,0,w,h,null);

Bufferedimage is much faster then MemoryImageSource on JVM versions 1.2+.

A suggestion. Add a similar example as the one above as this question comes up from time to time..

quote:
A suggestion. Add a similar example as the one above as this question comes up from time to time..

I meant to the FAQ ofcoarse

quote:Original post by Anonymous Poster
Bufferedimage is much faster then MemoryImageSource on JVM versions 1.2+.

Thanks..