Java Tutorial/2D Graphics/MemoryImageSource

Memory Image Generator

   <source lang="java">

import java.awt.Dimension; import java.awt.Graphics; import java.awt.Image; import java.awt.image.MemoryImageSource; import javax.swing.JApplet; public class MemoryImageGenerator extends JApplet {

 Image img;
 public void init() {
   Dimension d = getSize();
   int w = d.width;
   int h = d.height;
   int pixels[] = new int[w * h];
   int i = 0;
   for (int y = 0; y < h; y++) {
     for (int x = 0; x < w; x++) {
       int r = (x ^ y) & 0xff;
       int g = (x * 2 ^ y * 2) & 0xff;
       int b = (x * 4 ^ y * 4) & 0xff;
       pixels[i++] = (255 << 24) | (r << 16) | (g << 8) | b;
     }
   }
   img = createImage(new MemoryImageSource(w, h, pixels, 0, w));
 }
 public void paint(Graphics g) {
   g.drawImage(img, 0, 0, this);
 }

}</source>