shadowgimpyimp.java

基于Java平台的、功能强大的验证码图片生成工具

/*
 * Created on Sep 14, 2005
 *
 * To change the template for this generated file go to
 * Window>Preferences>Java>Code Generation>Code and Comments
 */
package nl.captcha.obscurity.imp;

import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.awt.image.FilteredImageSource;
import java.util.Properties;
import java.util.Random;

import nl.captcha.obscurity.GimpyEngine;
import nl.captcha.obscurity.NoiseProducer;
import nl.captcha.util.Helper;

import com.jhlabs.image.RippleFilter;
import com.jhlabs.image.ShadowFilter;
import com.jhlabs.image.TransformFilter;


/**
 * @author Administrator
 *
 * To change the template for this generated type comment go to
 * Window>Preferences>Java>Code Generation>Code and Comments
 */
public class ShadowGimpyImp implements GimpyEngine {
	
	
	private Properties props = null;
	
 
		public  BufferedImage getDistortedImage(BufferedImage image){
        
			BufferedImage imageDistorted = 
				new BufferedImage(image.getWidth(), image.getHeight(), 
					BufferedImage.TYPE_INT_ARGB);

			Graphics2D graph = (Graphics2D)imageDistorted.getGraphics();
        
			//create filter ripple
			//SphereFilter filter = new SphereFilter();
			//double d = 1.2;
			//filter.setRefractionIndex(d);
			
			
			ShadowFilter filter = new ShadowFilter();
			filter.setRadius(10);
			
			Random rand = new Random();
			
			RippleFilter wfilter = new RippleFilter();
						wfilter.setWaveType(RippleFilter.SINGLEFRAME);
						wfilter.setXAmplitude(7.6f);
						wfilter.setYAmplitude(rand.nextFloat()+1.0f);
						wfilter.setXWavelength(rand.nextInt(7)+8);
						wfilter.setYWavelength(rand.nextInt(3)+2);
						wfilter.setEdgeAction(TransformFilter.RANDOMPIXELORDER);
        
			 wfilter.setEdgeAction(TransformFilter.RANDOMPIXELORDER);
        	 
			//apply filter water              
			
			FilteredImageSource wfiltered = 
							new FilteredImageSource(image.getSource(), wfilter);
			
			Image img = Toolkit.getDefaultToolkit().createImage(wfiltered);
			img = Toolkit.getDefaultToolkit().createImage(wfiltered);
			
			
			FilteredImageSource filtered = 
							new FilteredImageSource(img.getSource(), filter);
			img = Toolkit.getDefaultToolkit().createImage(filtered);
			
               
			graph.drawImage(img, 0, 0, null, null);
        
			graph.dispose();
        
			//draw line over the iamge and/or text
			NoiseProducer noise = (NoiseProducer)Helper.ThingFactory.loadImpl(Helper.ThingFactory.NOICEIMP, props);
			noise.makeNoise(imageDistorted, .1f, .1f, .25f, .25f);
			noise.makeNoise(imageDistorted, .1f, .25f, .5f, .9f);
			return imageDistorted;
		}
    

	/* (non-Javadoc)
	 * @see nl.captcha.obscurity.GimpyEngine#setProperties(java.util.Properties)
	 */
	public void setProperties(Properties props) {
		this.props = props;

	}

}