001    package railo.runtime.img.interpolation;
002    
003    public class Hanning implements Interpolation
004    {
005        public double f(double x) {
006            return 0.5 + 0.5 * Math.cos(3.141592653589793 * x);
007        }
008        
009        public double getSupport() {
010            return 1.0;
011        }
012    }