Listing 3: Extracting a raster from an array of pixels.
Listing-ul RasterFromPixelArray.java
import java.awt.*;
import java.awt.image.*;
class ExtractingRaster extends Frame{
BufferedImage BIR=null;
//the BufferedImage used for drawing raster on screen
ColorModel CM=null;
//ColorModel object
//the array of pixels
static final byte[] ICM={
0,2,2,2,2,0,0,3,4,3,4,3,4,3,4,3,4,3,0,0,2,2,2,2,0,
0,2,2,2,2,0,0,4,3,4,3,4,3,4,3,4,3,4,0,0,2,2,2,2,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,
7,7,0,0,0,1,5,5,5,5,5,5,5,5,5,5,5,5,5,1,0,0,0,7,7,
7,7,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,7,7,
7,7,0,0,0,0,0,0,0,0,1,1,6,1,1,0,0,0,0,0,0,0,0,7,7,
7,7,0,0,0,0,0,0,0,0,1,1,6,1,1,0,0,0,0,0,0,0,0,7,7,
7,7,0,0,0,0,0,0,0,0,1,1,6,1,1,0,0,0,0,0,0,0,0,7,7,
7,7,0,0,0,0,0,0,0,0,1,1,6,1,1,0,0,0,0,0,0,0,0,7,7,
0,0,0,0,0,0,0,0,0,0,1,1,6,1,1,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,1,1,6,1,1,0,0,0,0,0,0,0,0,0,0,
0,1,1,1,1,1,0,0,0,0,1,1,6,1,1,0,0,0,0,0,0,0,0,0,0,
0,1,1,1,1,1,0,0,0,0,1,1,6,1,1,0,0,0,0,0,0,0,0,0,0,
0,1,1,1,1,1,0,0,0,0,1,1,6,1,1,0,0,0,0,0,0,0,0,0,0,
0,1,1,1,1,1,0,0,0,1,1,1,6,1,1,0,0,0,0,0,0,0,0,0,0,
0,1,1,1,1,1,1,1,1,1,1,1,6,1,1,0,0,0,0,0,0,0,0,0,0,
0,0,1,1,1,1,1,1,1,1,1,1,6,1,1,1,0,0,0,0,0,0,0,0,0,
0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,
0,0,0,0,1,1,1,1,1,1,1,0,0,1,1,1,1,1,1,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,
0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,
1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,
1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
};
public ExtractingRaster(String title)
{
super(title);
}
void init()
{
setLayout(null);
setSize(100,100);
setVisible(true);
}
//defining an index color model
private IndexColorModel indexCM()
{
byte[]r={(byte)255, (byte)255, (byte)0, (byte)0, (byte)0, (byte)255, (byte)128, (byte)255};
byte[]g={(byte)0, (byte)255, (byte)0, (byte)255, (byte)0, (byte)255, (byte)128, (byte)200};
byte[]b={(byte)0, (byte)255, (byte)0, (byte)0, (byte)255, (byte)0, (byte)128, (byte)0};
return new IndexColorModel(2,8,r,g,b);
}
void extracting()
{
//ColorModel
CM=indexCM();
//DataBuffer
DataBuffer DB=new DataBufferByte(ICM,(25*25),0);
//SampleModel
int[] BM=new int[]{(byte)0xf};
SampleModel SM=new SinglePixelPackedSampleModel(DataBuffer.TYPE_BYTE,25,25,BM);
//Raster
Point P=new Point(0,0);
WritableRaster R=Raster.createWritableRaster(SM,DB,P);
BIR=new BufferedImage(CM,R,false,null);
}
public void paint(Graphics g)
{
g.drawImage(BIR,50,50,this);
}
}
public class RasterFromPixelArray{
public static void main(String[] args)
{
ExtractingRaster t=new ExtractingRaster("JavaTile");
t.extracting();
t.init();
}
}
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