1    /* 
2     * Created by DocJava, Inc. 
3     * User: lyon 
4     * Date: Feb 28, 2003 
5     * Time: 7:42:23 AM 
6     */ 
7    package j2d.hpp; 
8     
9     
10   public class GreyHppFilter3 implements HppFilter3Interface { 
11       private float ar = 1; 
12       private float ag = 1; 
13       private float ab = 1; 
14    
15       public GreyHppFilter3(float ar, float ag, float ab) { 
16           this.ar = ar; 
17           this.ag = ag; 
18           this.ab = ab; 
19       } 
20    
21       public short getR(int r, int g, int b) { 
22           return avg(r, g, b); 
23       } 
24    
25       public short getG(int r, int g, int b) { 
26           return avg(r, g, b); 
27       } 
28    
29       public short getB(int r, int g, int b) { 
30           return avg(r, g, b); 
31       } 
32    
33       private short avg(int r, int g, int b) { 
34           return (short) ((r * ar + g * ag + b * ab) / 3); 
35       } 
36   } 
37