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