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| import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.image.MemoryImageSource;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class Main extends JPanel implements Runnable
{
public static void main( String[] arg )
{
new Main();
}
private JFrame frame;
private MemoryImageSource img;
private Image image;
private int[] pixels;
private int width, height;
private Thread thread;
public Main()
{
frame = new JFrame();
frame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
width = 800;
height = 600;
pixels = new int[ width * height ];
img = new MemoryImageSource( width, height, pixels, 0, width );
img.setAnimated( true );
image = createImage( img );
setDoubleBuffered( false );
setPreferredSize( new Dimension( width, height ) );
frame.getContentPane().add( this );
thread = new Thread( this );
thread.start();
frame.pack();
frame.setVisible( true );
}
@Override
public void update( Graphics g )
{
paint( g );
}
@Override
public void paint( Graphics g )
{
g.drawImage( image, 0, 0, this );
}
@Override
public void run()
{
int red = ( 255 << 24 ) | ( 255 << 16 );
int green = ( 255 << 24 ) | ( 255 << 8 );
int iPixels = 0, iLigne = 0;
int taille = width * height;
int couleur = red;
int fond = ( 255 << 24 ) | ( 255 << 16 ) | ( 255 << 8 ) | 255;
int x1 = 0, y1 = 0;
long temps = System.currentTimeMillis();
while( true )
{
temps = System.currentTimeMillis();
for( iPixels = 0; iPixels < taille; ++iPixels )
{
pixels[ iPixels ] = fond;
}
for( iLigne = 0 ; iLigne < 45000 ; ++iLigne )
{
x1 = (int)(Math.random() * 700 ) + 50;
y1 = (int)( Math.random() * 500 ) + 50;
drawLine( x1, y1,
x1 + (int) ( Math.random() * 100 ) - 50,
y1 + (int) ( Math.random() * 100 ) - 50, couleur );
}
img.newPixels();
temps = System.currentTimeMillis() - temps;
if( couleur == red ) { couleur = green; }
else { couleur = red; }
System.out.println( temps );
try
{
Thread.sleep( 500 );
}
catch( Exception exc )
{
exc.printStackTrace();
}
}
}
int e = 0, inc1 = 0, inc2 = 0, dx = 0, dy = 0, incx = 0, incy = 0, x = 0, y = 0, iPoint = 0;
public void drawLine( int x1, int y1, int x2, int y2, int couleur )
{
dx = x2 - x1;
dy = y2 - y1;
if( dx < 0 ) dx = -dx;
if( dy < 0 ) dy = -dy;
incx = 1;
if( x2 < x1 ) incx = -1;
incy = 1;
if( y2 < y1 ) incy = -1;
x = x1;
y = y1;
if( dx > dy )
{
pixels[ x + y * width ] = couleur;
e = ( dy << 1 ) - dx;
inc1 = ( dy - dx ) << 1;
inc2 = dy << 1;
for( iPoint = 0; iPoint < dx; iPoint++ )
{
if( e >= 0 )
{
y += incy;
e += inc1;
}
else { e += inc2; }
x += incx;
pixels[ x + y * width ] = couleur;
}
}
else
{
pixels[ x + y * width ] = couleur;
e = ( dx << 1 ) - dy;
inc1 = ( dx - dy ) << 1;
inc2 = dx << 1;
for( iPoint = 0; iPoint < dy; iPoint++ )
{
if( e >= 0 )
{
x += incx;
e += inc1;
}
else e += inc2;
y += incy;
pixels[ x + y * width ] = couleur;
}
}
}
} |
