/* * Copyright (c) 2002 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: * * -Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * -Redistribution in binary form must reproduct 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 AND ITS LICENSORS SHALL NOT * BE LIABLE FOR ANY DAMAGES OR LIABILITIES SUFFERED BY LICENSEE AS A RESULT * OF OR RELATING TO USE, MODIFICATION OR DISTRIBUTION OF THE 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 SOFTWARE, EVEN * IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. * * You acknowledge that Software is not designed, licensed or intended for * use in the design, construction, operation or maintenance of any nuclear * facility. */ /* * @(#)PoincareClock.java (Clock 1.11 02/06/13) 1.0 19/08/2003 */ import java.util.*; import java.awt.*; import java.applet.*; import java.text.*; /** * Time! * * @author Rachel Gollub * @modified Daniel Peek replaced circle drawing calculation, few more changes * @modified Aimé Vareille rotating retarder in Poincaré space representation : * Linearly polarized light is coming through retarder (birefringent plate). * The neutral lines of the retarder are rotating along the seconds, * then the linear light is rotating 4 times faster * with green color in the equator plane of Poincaré space * and the cirular polarized light is coming up and down to the poles * in red, twice during a round for the seconds (i.e. one minute). */ // public class PoincareClock extends Applet implements Runnable { public class PoincareClock extends Applet implements Runnable { private volatile Thread timer; // The thread that displays clock private int lastx4s, lasty4s, lastx2s, lasty2s, lastxs, lastys, lastxm, lastym, lastxh, lastyh; // Dimensions used to draw hands private SimpleDateFormat formatter; // Formats the date displayed private String lastdate; // String to hold date displayed private Font clockFaceFont; // Font for number display on clock private Date currentDate; // Used to get date to display private Color handColor; // Color of main hands and dial private Color poincare4Color; // Color of Poincaré private Color poincare2Color; // Color of Poincaré private Color numberColor; // Color of second hand and numbers private int xcenter = 80, ycenter = 55; // Center position public void init() { int x,y; lastx4s = lasty4s = lastx2s = lasty2s = lastxs = lastys = lastxm = lastym = lastxh = lastyh = 0; formatter = new SimpleDateFormat ("EEE MMM dd hh:mm:ss yyyy", Locale.getDefault()); currentDate = new Date(); lastdate = formatter.format(currentDate); clockFaceFont = new Font("Serif", Font.PLAIN, 14); handColor = Color.blue; poincare2Color = Color.red; poincare4Color = Color.green; numberColor = Color.darkGray; try { setBackground(new Color(Integer.parseInt(getParameter("bgcolor"), 16))); } catch (NullPointerException e) { } catch (NumberFormatException e) { } try { handColor = new Color(Integer.parseInt(getParameter("fgcolor1"), 16)); } catch (NullPointerException e) { } catch (NumberFormatException e) { } try { numberColor = new Color(Integer.parseInt(getParameter("fgcolor2"), 16)); } catch (NullPointerException e) { } catch (NumberFormatException e) { } resize(300,300); // Set clock window size } // Paint is the main part of the program public void update(Graphics g) { int xh, yh, xm, ym, xs, ys, x4s, y4s, x2s, y2s; int s = 0, m = 10, h = 10; double angle = 0; double temp1 = 0; double temp2 = 0; double temp3 = 0; String today; currentDate = new Date(); formatter.applyPattern("s"); try { s = Integer.parseInt(formatter.format(currentDate)); } catch (NumberFormatException n) { s = 0; } formatter.applyPattern("m"); try { m = Integer.parseInt(formatter.format(currentDate)); } catch (NumberFormatException n) { m = 10; } formatter.applyPattern("h"); try { h = Integer.parseInt(formatter.format(currentDate)); } catch (NumberFormatException n) { h = 10; } // Set position of the ends of the hands xs = (int) (Math.cos(s * Math.PI / 30 - Math.PI / 2) * 45 + xcenter); ys = (int) (Math.sin(s * Math.PI / 30 - Math.PI / 2) * 45 + ycenter); angle = s * Math.PI / 30 - Math.PI / 2; temp1 = Math.sin(4.0 * angle); temp2 = 1.0 - temp1 * temp1; temp1 = Math.tan(4.0 * angle); temp3 = temp1 * temp1; temp1 = Math.cos(4.0 * angle); if (temp1 < 0.0) { temp1 = -1.0 ;} else {temp1 = 1.0 ;} // x4stotal = (int) (Math.sqrt(temp2/((1.0 / 225.0) + (temp3 / 2500.0))) + xcenter); x4s = (int) (temp1 * Math.sqrt(1.0 /((1.0 / 2500.0) + (temp3 / 225.0)))/2.0 + xcenter); temp1 = Math.sin(4.0 * angle); if (temp1 < 0.0) { temp1 = -1.0 ;} else {temp1 = 1.0 ;} // y4stotal = (int) (temp1 * Math.sqrt(temp2/((1.0 / 2500.0) + (1.0 / (temp3 * 225.0)))) + ycenter); y4s = (int) (temp1 * Math.sqrt(1.0 /((1.0 / 225.0) + (1.0 / (temp3 * 2500.0))))/2.0 + ycenter); x2s = (int) (xcenter); y2s = (int) (-50.0 * Math.sin(2.0 * angle) + ycenter); xm = (int) (Math.cos(m * Math.PI / 30 - Math.PI / 2) * 40 + xcenter); ym = (int) (Math.sin(m * Math.PI / 30 - Math.PI / 2) * 40 + ycenter); xh = (int) (Math.cos((h*30 + m / 2) * Math.PI / 180 - Math.PI / 2) * 30 + xcenter); yh = (int) (Math.sin((h*30 + m / 2) * Math.PI / 180 - Math.PI / 2) * 30 + ycenter); // Get the date to print at the bottom formatter.applyPattern("EEE MMM dd HH:mm:ss yyyy"); today = formatter.format(currentDate); g.setFont(clockFaceFont); // Erase if necessary g.setColor(getBackground()); if (x4s != lastx4s || y4s != lasty4s) { g.drawLine(xcenter, ycenter, lastx4s, lasty4s); g.drawString(lastdate, 5, 125); } if (x2s != lastx2s || y2s != lasty2s) { g.drawLine(xcenter, ycenter, lastx2s, lasty2s); g.drawString(lastdate, 5, 125); } if (xs != lastxs || ys != lastys) { g.drawLine(xcenter, ycenter, lastxs, lastys); g.drawString(lastdate, 5, 125); } if (xm != lastxm || ym != lastym) { g.drawLine(xcenter, ycenter-1, lastxm, lastym); g.drawLine(xcenter-1, ycenter, lastxm, lastym); } if (xh != lastxh || yh != lastyh) { g.drawLine(xcenter, ycenter-1, lastxh, lastyh); g.drawLine(xcenter-1, ycenter, lastxh, lastyh); } // Draw date and hands g.setColor(numberColor); g.drawString(today, 5, 125); g.drawLine(xcenter, ycenter, xs, ys); g.setColor(poincare4Color); g.drawLine(xcenter, ycenter, x4s, y4s); g.setColor(poincare2Color); g.drawLine(xcenter, ycenter, x2s, y2s); g.setColor(handColor); g.drawLine(xcenter, ycenter-1, xm, ym); g.drawLine(xcenter-1, ycenter, xm, ym); g.drawLine(xcenter, ycenter-1, xh, yh); g.drawLine(xcenter-1, ycenter, xh, yh); lastx4s = x4s; lasty4s = y4s; lastx2s = x2s; lasty2s = y2s; lastxs = xs; lastys = ys; lastxm = xm; lastym = ym; lastxh = xh; lastyh = yh; lastdate = today; currentDate = null; } public void paint(Graphics g) { g.setFont(clockFaceFont); // Draw the circle and numbers g.setColor(handColor); g.drawArc(xcenter-50, ycenter-50, 100, 100, 0, 360); g.drawOval(xcenter-50, ycenter-15, 100, 30); g.setColor(numberColor); g.drawString("9", xcenter-45, ycenter+3); g.drawString("3", xcenter+40, ycenter+3); g.drawString("12", xcenter-5, ycenter-37); g.drawString("6", xcenter-3, ycenter+45); // Draw date and hands g.setColor(numberColor); g.drawString(lastdate, 5, 125); g.drawLine(xcenter, ycenter, lastxs, lastys); g.setColor(poincare4Color); g.drawLine(xcenter, ycenter, lastx4s, lasty4s); g.setColor(poincare2Color); g.drawLine(xcenter, ycenter, lastx2s, lasty2s); g.setColor(handColor); g.drawLine(xcenter, ycenter-1, lastxm, lastym); g.drawLine(xcenter-1, ycenter, lastxm, lastym); g.drawLine(xcenter, ycenter-1, lastxh, lastyh); g.drawLine(xcenter-1, ycenter, lastxh, lastyh); } public void start() { timer = new Thread(this); timer.start(); } public void stop() { timer = null; } public void run() { Thread me = Thread.currentThread(); while (timer == me) { try { Thread.currentThread().sleep(100); } catch (InterruptedException e) { } repaint(); } } public String getAppletInfo() { return "Title: A Poincaré Clock \n" + "Author: Rachel Gollub, 1995 \n" + "Author: Aimé Vareille for the Poincaré enhancement, 2003 \n" + "An analog Poincaré clock."; } public String[][] getParameterInfo() { String[][] info = { {"bgcolor", "hexadecimal RGB number", "The background color. Default is the color of your browser."}, {"fgcolor1", "hexadecimal RGB number", "The color of the hands and dial. Default is blue."}, {"fgcolor2", "hexadecimal RGB number", "The color of the second hand and numbers. Default is dark gray."} }; return info; } public static void main(String args[]) { Frame f = new Frame("POINCARE CLOCK"); PoincareClock poincare = new PoincareClock(); poincare.init(); poincare.start(); f.add("Center", poincare); // f.setSize(650, 300); f.setSize(220, 180); f.show(); } } // Class PoincareClock