1    /* 
2     * Created by DocJava, Inc. 
3     * User: lyon 
4     * Date: Feb 28, 2003 
5     * Time: 7:44:33 AM 
6     */ 
7    package j2d.hpp; 
8     
9    import j2d.ImageProcessorInterface; 
10    
11   import java.awt.*; 
12    
13    
14   public class InvertFilter 
15           implements HppFilterInterface { 
16       public short getR(int r) { 
17           return invert(r); 
18       } 
19    
20       public short getG(int g) { 
21           return invert(g); 
22       } 
23    
24       public short getB(int b) { 
25           return invert(b); 
26       } 
27    
28       private short invert(int v) { 
29           if (v < 0) return 0; 
30           if (v > 255) return 255; 
31           return (short) (255 - v); 
32       } 
33    
34       public static ImageProcessorInterface getProcessor() { 
35           return new HppFilterImageProcessor( 
36                   new InvertFilter()); 
37       } 
38    
39   } 
40