/*
* @(#)Ellipses.java 1.14 99/09/07
*
* Copyright (c) 1998, 1999 by Sun Microsystems, Inc. All Rights Reserved.
*
* Sun grants you ("Licensee") a non-exclusive, royalty free, license to use,
* modify and redistribute this software in source and binary code form,
* provided that i) this copyright notice and license appear on all copies of
* the software; and ii) Licensee does not utilize the software in a manner
* which is disparaging to Sun.
*
* 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 AND ITS LICENSORS SHALL NOT BE
* LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
* OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
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*
* This software is not designed or intended for use in on-line control of
* aircraft, air traffic, aircraft navigation or aircraft communications; or in
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*/
package demos.Arcs_Curves;
import java.awt.*;
import java.awt.geom.Ellipse2D;
import 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());
}
}
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