/* * @(#)Ellipses.java	1.21 04/07/26 *  * Copyright (c) 2004 Sun Microsystems, Inc. All Rights Reserved. *  * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: *  * -Redistribution of source code must retain the above copyright notice, this *  list of conditions and the following disclaimer. *  * -Redistribution in binary form must reproduce the above copyright notice,  *  this list of conditions and the following disclaimer in the documentation *  and/or other materials provided with the distribution. *  * Neither the name of Sun Microsystems, Inc. or the names of contributors may  * be used to endorse or promote products derived from this software without  * specific prior written permission. *  * This software is provided "AS IS," without a warranty of any kind. ALL  * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING * ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE * OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN MIDROSYSTEMS, INC. ("SUN") * AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE * AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST  * REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL,  * INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY  * OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE,  * EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. *  * You acknowledge that this software is not designed, licensed or intended * for use in the design, construction, operation or maintenance of any * nuclear facility. *//* * @(#)Ellipses.java	1.21 04/07/26 */package java2d.demos.Arcs_Curves;import java.awt.*;import java.awt.geom.Ellipse2D;import java2d.AnimatingSurface;/** * Ellipse2D 25 animated expanding ellipses. */public class Ellipses extends AnimatingSurface {    private static Color colors[] = { Color.blue, Color.cyan, Color.green,                Color.magenta, Color.orange, Color.pink, Color.red,                 Color.yellow, Color.lightGray, Color.white };    private Ellipse2D.Float[] ellipses;    private double esize[];    private float estroke[];    private double maxSize;    public Ellipses() {        setBackground(Color.black);        ellipses = new Ellipse2D.Float[25];        esize = new double[ellipses.length];        estroke = new float[ellipses.length];        for (int i = 0; i < ellipses.length; i++) {            ellipses[i] = new Ellipse2D.Float();            getRandomXY(i, 20 * Math.random(), 200, 200);        }    }    public void getRandomXY(int i, double size, int w, int h) {        esize[i] = size;        estroke[i] = 1.0f;        double x = Math.random() * (w-(maxSize/2));        double y = Math.random() * (h-(maxSize/2));        ellipses[i].setFrame(x, y, size, size);    }    public void reset(int w, int h) {        maxSize = w/10;        for (int i = 0; i < ellipses.length; i++ ) {            getRandomXY(i, maxSize * Math.random(), w, h);        }    }    public void step(int w, int h) {        for (int i = 0; i < ellipses.length; i++) {            estroke[i] += 0.025f;            esize[i]++;            if (esize[i] > maxSize) {                getRandomXY(i, 1, w, h);            } else {                ellipses[i].setFrame(ellipses[i].getX(), ellipses[i].getY(),                                     esize[i], esize[i]);            }        }    }    public void render(int w, int h, Graphics2D g2) {        for (int i = 0; i < ellipses.length; i++) {            g2.setColor(colors[i%colors.length]);            g2.setStroke(new BasicStroke(estroke[i]));            g2.draw(ellipses[i]);        }    }    public static void main(String argv[]) {        createDemoFrame(new Ellipses());    }}