// ymageCaptcha.java // ----------------------- // part of YaCy // (C) by Marc Nause // // $LastChangedDate: 2007-04-03 22:56:00 +0100 (Di, 04 Apr 2007) $ // $LastChangedRevision: 3542 $ // $LastChangedBy: low012 $ // // This program is free software; you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation; either version 2 of the License, or // (at your option) any later version. // // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with this program; if not, write to the Free Software // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA // // Using this software in any meaning (reading, learning, copying, compiling, // running) means that you agree that the Author(s) is (are) not responsible // for cost, loss of data or any harm that may be caused directly or indirectly // by usage of this softare or this documentation. The usage of this software // is on your own risk. The installation and usage (starting/running) of this // software may allow other people or application to access your computer and // any attached devices and is highly dependent on the configuration of the // software which must be done by the user of the software; the author(s) is // (are) also not responsible for proper configuration and usage of the // software, even if provoked by documentation provided together with // the software. // // Any changes to this file according to the GPL as documented in the file // gpl.txt aside this file in the shipment you received can be done to the // lines that follows this copyright notice here, but changes must not be // done inside the copyright notive above. A re-distribution must contain // the intact and unchanged copyright notice. // Contributions and changes to the program code must be marked as such. package de.anomic.ymage; import java.util.Random; import javax.imageio.ImageIO; public class ymageCaptcha extends ymageMatrix { public ymageCaptcha(int width, int height, String code) { super(width, height, SUBTRACTIVE_WHITE); this.create(code); } private void create(String code){ Random random = new Random(); int width = this.getWidth(); int height = this.getHeight(); int chars = code.length(); int x; int y; int ub = 0; int widthPerChar = (int)(width/chars); int pixels = width * height; //printing code for(int i=0;i<chars;i++){ y = random.nextInt((int)(height/2)) + (int)(height/4); setColor(((random.nextInt(128)+64)<<16) + ((random.nextInt(128)+64)<<8) + random.nextInt(128)+64); ymageToolPrint.print(this, widthPerChar*i+random.nextInt((int)(widthPerChar/2)) , y , 0, code.substring(i,i+1), -1); } //adding some noise //random pixels ub = (int)(pixels/100); for(int i=0;i<ub;i++){ setColor(((random.nextInt(128)+64)<<16) + ((random.nextInt(128)+64)<<8) + random.nextInt(128)+64); x = random.nextInt(width); y = random.nextInt(height); plot(x, y); } //random lines ub = (int)(pixels/1000); for(int i=0;i<ub;i++){ setColor(((random.nextInt(128)+64)<<16) + ((random.nextInt(128)+64)<<8) + random.nextInt(128)+64); x = random.nextInt(width); y = random.nextInt(height); line(x, y, x + random.nextInt(5), y + random.nextInt(5)); } } public static void main(String[] args) { // go into headless awt mode System.setProperty("java.awt.headless", "true"); ymageCaptcha m = new ymageCaptcha(200, 70, args[1]); try { ImageIO.write(m.getImage(), "png", new java.io.File(args[0])); } catch (java.io.IOException e) { e.printStackTrace(); } } }