LookUppublic class LookUp extends Applet
| Fields Summary |
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| private BufferedImage | bi |
| Constructors Summary |
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public LookUp()
setBackground(Color.white);
Image img = getToolkit().getImage("images/bld.jpg");
try {
MediaTracker tracker = new MediaTracker(this);
tracker.addImage(img, 0);
tracker.waitForID(0);
} catch (Exception e) {}
int iw = img.getWidth(this);
int ih = img.getHeight(this);
bi = new BufferedImage(iw, ih, BufferedImage.TYPE_INT_RGB);
Graphics2D big = bi.createGraphics();
big.drawImage(img,0,0,this);
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| Methods Summary |
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| public static void | main(java.lang.String[] s)
WindowListener l = new WindowAdapter() {
public void windowClosing(WindowEvent e) {System.exit(0);}
};
Frame f = new Frame("LookUp");
f.addWindowListener(l);
f.add("Center", new LookUp());
f.pack();
f.setSize(new Dimension(600, 300));
f.show();
| | public void | paint(java.awt.Graphics g)
Graphics2D g2 = (Graphics2D) g;
int w = getSize().width;
int h = getSize().height;
int bw = bi.getWidth(this);
int bh = bi.getHeight(this);
AffineTransform at = new AffineTransform();
at.scale(w/2.0/bw, h/1.0/bh);
BufferedImageOp biop = null;
BufferedImage bimg = new BufferedImage(bw,bh,BufferedImage.TYPE_INT_RGB);
byte reverse[] = new byte[256];
for (int j=0; j<200; j++){
reverse[j]=(byte)(256-j);
}
ByteLookupTable blut=new ByteLookupTable(0, reverse);
LookupOp lop = new LookupOp(blut, null);
lop.filter(bi,bimg);
biop = new AffineTransformOp(at, AffineTransformOp.TYPE_NEAREST_NEIGHBOR);
g2.drawImage(bi, biop, 0, 0);
g2.drawImage(bimg,biop,w/2+3,0);
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