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72 lines
2.3 KiB
Java
72 lines
2.3 KiB
Java
Applet that demonstrates a Java2D GeneralPath
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import java.applet.*;
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import java.awt.event.*;
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import java.awt.*;
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import java.awt.geom.*;
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import javax.swing.*;
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public class ShapesApplet extends JApplet {
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// initialize the applet
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public void init()
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{
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// obtain color parameters from XHTML file
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try {
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int red = Integer.parseInt( getParameter( "red" ) );
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int green = Integer.parseInt( getParameter( "green" ) );
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int blue = Integer.parseInt( getParameter( "blue" ) );
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Color backgroundColor = new Color( red, green, blue );
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setBackground( backgroundColor );
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}
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// if there is an exception while processing the color
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// parameters, catch it and ignore it
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catch ( Exception exception ) {
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// do nothing
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}
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}
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public void paint( Graphics g )
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{
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// create arrays of x and y coordinates
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int xPoints[] =
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{ 55, 67, 109, 73, 83, 55, 27, 37, 1, 43 };
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int yPoints[] =
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{ 0, 36, 36, 54, 96, 72, 96, 54, 36, 36 };
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// obtain reference to a Graphics2D object
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Graphics2D g2d = ( Graphics2D ) g;
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// create a star from a series of points
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GeneralPath star = new GeneralPath();
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// set the initial coordinate of the GeneralPath
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star.moveTo( xPoints[ 0 ], yPoints[ 0 ] );
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// create the star--this does not draw the star
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for ( int k = 1; k < xPoints.length; k++ )
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star.lineTo( xPoints[ k ], yPoints[ k ] );
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// close the shape
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star.closePath();
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// translate the origin to (200, 200)
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g2d.translate( 200, 200 );
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// rotate around origin and draw stars in random colors
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for ( int j = 1; j <= 20; j++ ) {
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g2d.rotate( Math.PI / 10.0 );
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g2d.setColor(
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new Color( ( int ) ( Math.random() * 256 ),
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( int ) ( Math.random() * 256 ),
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( int ) ( Math.random() * 256 ) ) );
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g2d.fill( star ); // draw a filled star
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}
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}
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}
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